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The Journal of Pediatrics

Elsevier BV

Preprints posted in the last 30 days, ranked by how well they match The Journal of Pediatrics's content profile, based on 16 papers previously published here. The average preprint has a 0.02% match score for this journal, so anything above that is already an above-average fit.

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Human milk feeding, fortification initiation, and clinical outcomes in neonates with critical congenital heart disease: A multi-institutional study

Elgersma, K. M.; Joy, B. F.; Huang, Z.; Radman, M. R.; Mills, K. I.; Schramm, J. E.; Wong, J. H.; Chlebowski, M. M.; Beshish, A. G.; Safa, R.; Mueller, D.; Shutes, B. L.; Pande, C.; Furlong-Dillard, J.; Narasimhulu, S. S.; Beach, A.; Goldstein, S. A.; Riley, C. M.; Reddy, R.; Goldshtrom, N.; Schneider, J.; Liao, G.; Asfari, A.; Karki, K. B.; Huibonhoa, R. M. T.; Mastropietro, C. W.; Cashen, K.

2026-08-23 pediatrics 10.64898/2026.08.20.26360934 medRxiv
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Background Neonates with critical congenital heart disease (CCHD) are vulnerable to feeding-related complications including necrotizing enterocolitis (NEC). Human milk and direct breastfeeding (BF) may offer protection, but multisite evidence is limited. We aimed to determine relationships between the proportion of human milk received (ie, human milk percentage) or BF frequency during the neonatal period and NEC, sepsis, infectious complications, or length of stay (LOS). We also determined whether bovine-derived fortification or formula initiation was associated with NEC. Methods This retrospective study included neonates from 25 US pediatric centers who underwent surgery with cardiopulmonary bypass. Outcomes were NEC (modified Bell's Stages II-III), sepsis, infection, and LOS. Disease risk score case-control matching and energy balancing weighted regression balanced multiple relevant covariates. Results Among 822 neonates, the percentage of human milk received during the neonatal period was not associated with NEC, sepsis or infection. Initiation of fortification or formula was associated with 3-fold higher odds of developing NEC within 5 days (OR:3.10, 95%CI:1.10-8.12, p=0.025). In energy balancing weighted regression models, higher neonatal human milk percentage and more frequent BF were strongly associated with shorter LOS: 100% versus 0% human milk with 9.33 days shorter (4.47-14.19, p<0.001); each additional BF session with 0.48 days shorter (0.31-0.65, p<0.001). Conclusions In this multisite cohort, fortification or formula initiation was associated with increased odds of NEC; and neonatal human milk percentage and BF with shorter LOS. Given limited evidence to guide practice, caution in introducing bovine-derived formula for high-risk infants with CCHD may be warranted.

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Elevated Rates of Gastrointestinal Dysfunction in Children with Neurodevelopmental Disabilities: Not Just an Autism Issue

Savatt, J. M.; Nixon, M. P.; Berry, A. S. F.; Johns, A.; Walsh, L. K.; Martin, C. L.; Ledbetter, D. H.; Challman, T. D.; Myers, S. M.

2026-08-19 pediatrics 10.64898/2026.08.17.26360370 medRxiv
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Gastrointestinal (GI) conditions are common among children with neurodevelopmental disabilities (NDDs), and are associated with functional impairment, behavioral symptoms, and increased health care utilization. A unique relationship between autism and GI dysfunction has been proposed, leading to a focus on autism in GI research, management guidelines, and clinical tool development. Leveraging >20 years of electronic health record data and a cohort of 42,204 cases with attention-deficit/hyperactivity disorder, autism, cerebral palsy, epilepsy, or intellectual disability and 297,402 controls without NDDs, we quantified associations between NDDs and GI conditions in children. GI conditions were more common in cases than controls across all individual NDDs; intellectual disability and cerebral palsy were most strongly associated with having a GI condition. In this work, clinically recognized GI morbidity was elevated across all NDDs and not unique to autism, suggesting that a broader, transdiagnostic approach to GI dysfunction in children with NDDs is warranted.

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Rising rate of non-receipt of vitamin K prophylaxis for newborns, January 2019 - June 2026

Masters, N. B.; Farrar, K. G.; Holler, E.; Lancaster, J. M.

2026-09-02 pediatrics 10.64898/2026.08.31.26361837 medRxiv
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Background: Vitamin K prophylaxis is universally recommended for newborns to prevent life threatening vitamin K deficiency bleeding. Although not on the immunization schedule, vitamin K prophylaxis is often coadministered with hepatitis B birth dose and erythromycin ophthalmic ointment, and rising hesitancy around vaccines/preventive care may spill over into vitamin K administration. Methods: We conducted a retrospective cohort study using Truveta electronic health record data with linked mother-child dyads. Live births to mothers aged 15-49 from January 1, 2019 through June 30, 2026 were included. Vitamin K administration was defined as documentation on the birth date or following day. Logistic regression assessed sociodemographic predictors of non-receipt, and interrupted time series analysis evaluated changes after January 2026. Results: Among 1,026,375 infants, 995,628 (96.97%) had documented vitamin K administration. Non-receipt increased from an average of 2.1% during 2019-2022 to 4.3% in 2025 and 6.1% in 2026, reaching 8.10% in June 2026. Older maternal age, non-Hispanic or Latino ethnicity, Medicaid or unknown insurance, and year of delivery were associated with greater odds of non-receipt. After January 2026, there was no immediate step change, but the odds of vitamin K receipt declined an additional 10% per month (OR: 0.90; 95% CI, 0.88-0.91). Conclusions: Vitamin K non-receipt increased over the study period and accelerated after January 2026. Because vitamin K recommendations were not changed by the January vaccine schedule, this association may reflect broader impacts to confidence in newborn preventive care. Future studies should examine causal mechanisms, parental decision-making, and associated clinical outcomes.

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Early Diagnosis and Prognosis of Cerebral Palsy From a 1-Minute Infant Video

Peyton, C.; Luke, C.; Bos, A. F.; Boswell, L.; Finn, C.; deRegnier, R.-A.; Goetgeluck, A.; Gordon, A.; Mann, I.; Stein, K.; Thorley, M.; Boyd, R. N.; Moulton, T.

2026-08-26 pediatrics 10.64898/2026.08.24.26361217 medRxiv
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AIM: To evaluate whether selective motor control quantified from spontaneous infant movement recordings provides diagnostic and prognostic information for cerebral palsy (CP) beyond established movement-based assessments. METHOD: This multicenter diagnostic and prognostic accuracy study included 302 infants (151 with CP) with spontaneous movement recordings obtained between 10 and 20 weeks corrected age from cohorts in Australia and the United States. All eligible infants with CP were included, and a comparison sample without CP was randomly selected. Recordings were scored using the Baby Observational Selective Control Appraisal (BabyOSCAR), Motor Optimality Score Revised (MOS-R), and General Movements Assessment (GMA). Outcomes at 2 years or older included CP diagnosis, Gross Motor Function Classification System (GMFCS) level, and motor distribution. RESULTS: BabyOSCAR discriminated CP diagnosis (area under the curve [AUC] 0.98), including children later classified in GMFCS level I. Among infants with CP, BabyOSCAR discriminated GMFCS levels I - II from III - V (AUC 0.89). BabyOSCAR absolute asymmetry also discriminated unilateral CP from all other infants (AUC 0.90). Diagnostic discrimination was also observed for MOS-R (AUC 0.94) and GMA (AUC 0.86). INTERPRETATION: Quantifying selective motor control from brief infant movement recordings may provide complementary early information about CP diagnosis, functional level, and motor distribution.

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Socioeconomic deprivation and time trends in pediatric hospital admissions, intensive care treatment, and mortality: a nationwide population-based study in Germany

Hojeij, R.; Oenning, C.; Ravichandrajah, H.; Haertel, C.; Dohna-Schwake, C.; Felderhoff-Mueser, U.; Bruns, N.

2026-08-18 pediatrics 10.64898/2026.08.15.26360488 medRxiv
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Background: Socioeconomic deprivation is associated with childhood morbidity, but nationwide evidence on critical illness and death in a health system with universal insurance coverage is scarce. We assessed the association between area-level deprivation and the population-level incidence of hospital admission, complex intensive care treatment (CICT), and CICT-related mortality in German children, and changes over time. Methods: Population-based analysis of complete German hospital discharge data, 2016 to 2023, covering all cases aged > 28 days to < 18 years. Cases were linked to the German Index of Socioeconomic Deprivation (GISD) via the municipality of residence and grouped into quintiles (Q1 least, Q5 most deprived). Incidence rates were calculated per 100,000 child years. Negative binomial regression adjusted for calendar year, with population as offset, yielded adjusted incidence rate ratios (aIRR) per one-quintile increase in deprivation; sensitivity analyses additionally adjusted for age group. Excess cases were estimated by applying Q1 incidence rates to Q2 to Q5. Results: Of 8,890,103 pediatric cases, 140,509 (1.6 %) received CICT and 3,386 (2.40 %) of these died. Incidence rose with deprivation from Q1 to Q5: admissions 6,191 to 9,255 per 100,000 child years, CICT 97 to 128, mortality 2.54 to 2.96. Each one-quintile increase was associated with higher risk of admission (aIRR 1.10, 95 % CI 1.10-1.11), CICT (1.07, 1.05-1.08), and mortality (1.04, 1.01-1.06); estimates were unchanged after age adjustment. Relative to Q1 rates, Q2 to Q5 accounted for 1,295,896 excess admissions (20.8 %), 11,254 excess CICT cases (12.6 %), and 194 excess deaths (8.7 %). Case fatality among CICT cases was lower in more deprived quintiles (2.35 % in Q5 versus 2.64 % in Q1), as were organ dysfunction and chronic conditions. Disparities in admission and CICT narrowed over time, whereas the mortality gradient persisted. Conclusions: Universal health insurance did not eliminate socioeconomic inequalities in pediatric critical illness. Deprivation increased the population burden of admission, intensive care, and death, but did not worsen outcomes once intensive care had begun, indicating that inequalities arise before pediatric intensive care and that prevention upstream in the care continuum is the primary target.

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Case fatality of critically ill children treated in pediatric versus adult intensive care units in Germany: a nationwide cohort study

Bruns, N.; Wessel, A.; Biedermann, R.; Fiedler, K. M.; Goretzki, S. C.; Greve, S.; Hannes, T.; Felderhoff-Mueser, U.; Heimann, K.; Mand, N.; Masjosthusmann, K.; Merker, M.; Soler Wenglein, J.; van den Heuvel, I. A.; Westhoff, J. H.; Tsaka, S.; Lieftuechter, V.; Haertel, C.; Dohna-Schwake, C.; Hojeij, R.

2026-08-17 pediatrics 10.64898/2026.08.14.26360448 medRxiv
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Purpose: Outcome consequences of critically ill children treated outside of pediatric intensive care units (PICU) are unknown. We assessed case fatality of children receiving complex intensive care treatment (CICT) by treating department in Germany and explored reasons for admission to adult intensive care units (AICU). Methods: Retrospective study using the German nationwide hospital discharge dataset 2016 to 2023. Cases aged [&ge;] 28 days and < 18 years receiving CICT were classified as PICU, AICU, or interdisciplinary by department codes. Odds ratios (OR) for in-hospital case fatality were estimated in generalized linear mixed models with the hospital as random effect, adjusted for age, acute organ dysfunction, and chronic conditions. Excess deaths were estimated and a survey among pediatric and adult intensivists was analyzed qualitatively. Results: Of 143,034 cases, 67.8 % were treated in PICUs, 14.0 % in AICUs, and 18.2 % were interdisciplinary. The crude OR for death in PICUs versus AICUs was 1.14 (95 % CI 1.03 to 1.26), reversing to 0.73 (0.63 to 0.84) after adjustment. For PICU and interdisciplinary cases combined versus AICU, the fully adjusted OR was 0.61 (0.54 to 0.70). Estimated excess deaths across the study period were 100, rising to 191 when interdisciplinary cases counted as pediatric. Capacity constraints, organizational factors, and clinical expertise were the main domains underlying AICU admissions. Conclusions: Children treated outside of PICUs had higher risk-adjusted case fatality, while crude figures pointed in the opposite direction. The findings support treating critically ill children in settings with routine pediatric intensive care experience.

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Feasibility of adjusting for sepsis-related organ dysfunction in pediatric patients using administrative healthcare data

Ravichandrajah, H.; Fischer, A.; Tiago Gomez, A.; Hojeij, R.; Goretzki, S. C.; Felderhoff-Mueser, U.; Park, H.-J.; Kernan, K.; Carcillo, J. A.; Dohna-Schwake, C.; Bruns, N.

2026-08-13 pediatrics 10.64898/2026.08.12.26360255 medRxiv
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Background: Risk adjustment for disease severity in pediatric intensive care research commonly relies on clinical organ dysfunction scores requiring detailed clinical and laboratory information, which is often unavailable in administrative healthcare datasets. We therefore evaluated the feasibility of a coding-based Pediatric Organ Dysfunction Index (PODI) derived from International Classification of Diseases (ICD-10) and Operation and Procedure System (OPS) codes, for approximating sepsis-related organ dysfunction and adjusting for disease severity, using the pediatric Sequential Organ Failure Assessment (pSOFA) score as a reference standard. Methods: In this retrospective single-center cohort study, pediatric sepsis episodes treated between November 2011 and November 2021 were identified. Discrimination for in-hospital mortality and calibration were assessed. Agreement between PODI and pSOFA was quantified using Spearman's rank correlation, and organ-specific agreement using sensitivity, specificity, and predictive values. An expanded PODI incorporating additional ICD-10 and OPS codes was evaluated in sensitivity analyses. Results: A total of 488 pediatric sepsis episodes were included, with an in-hospital mortality of 14.1%. The PODI showed good discrimination for in-hospital mortality (AUC 0.85, 95% CI 0.80-0.89), comparable to the maximum pSOFA (pSOFAmax) (AUC 0.78, 95% CI 0.72-0.83) and superior to pSOFA at sepsis onset (pSOFAonset) (AUC 0.73, 95% CI 0.67-0.80). Agreement between PODI and pSOFA organ-specific components varied considerably across organ systems, with the highest sensitivity to detect pulmonary dysfunction. Correlation between both scores was moderate (0.54 for pSOFAonset and 0.60 for pSOFAmax), indicating that comparable predictive performance does not render the scores interchangeable. The expanded PODI improved organ-level sensitivity for selected components but did not meaningfully improve mortality discrimination. Conclusions: The standard PODI may represent a practical approach to adjust for organ dysfunction and therapy intensity in administrative datasets with ICD-10 coding where clinical and laboratory information is unavailable. Given only moderate agreement with the pSOFA, the PODI should be understood as a covariate for risk adjustment at the group level rather than as a substitute for clinical organ dysfunction scores in individual patients. Further validation and refinement in non-sepsis cohorts are required before broader implementation in large-scale administrative research can be recommended.

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Towards Electronic Health Records-Based Paediatric Growth References: Results from the SwissPedGrowth Project

Leuenberger, L. M.; Shoman, Y.; Romero, F.; Sasaki, M.; Deligianni, X.; Goebel, N.; Mozun, R.; Bielicki, J. A.; Burckhardt, M.-A.; Saner, C.; Schwitzgebel, V.; Hauschild, M.; Righini Grunder, F.; Mueller, P.; Schlapbach, L. J.; Jenni, O.; Spycher, B. D.; Kuehni, C. E.; Belle, F. N.; SwissPedHealth consotrium,

2026-09-02 pediatrics 10.64898/2026.08.28.26361619 medRxiv
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BACKGROUND: We used anthropometric data from electronic health records (EHRs) of Swiss childrens hospitals to evaluate growth references and estimate centile curves. METHODS: We received EHRs extracted from seven Swiss childrens hospitals and analysed two samples: all children with a height, weight, body mass index (BMI), or head circumference recording, and a subsample restricted to children without diseases potentially affecting growth, weighted to represent the general population. We calculated mean z-scores based on the World Health Organization growth references adopted for Switzerland in 2011 (CH-WHO 2011) and current Swiss growth references (Swiss 2026). We estimated sex-specific centile curves in the subsample using generalised additive models for location, scale, and shape. RESULTS: We included 213,868 children with height, 448,002 with weight, 209,244 with BMI, and 67,397 with head circumference recordings. Mean z-scores in the all children sample were (CH-WHO 2011; Swiss 2026): height (0.10; -0.19), weight (0.16; -0.09), BMI (0.04; -0.07), head circumference (-0.28, -0.28); and in the subsample: height (0.34; 0.00), weight (0.27; 0.01), BMI (0.18; 0.05), and head circumference (0.04; 0.01). The 50th height, weight, BMI, and head circumference centiles of girls and boys in the subsample closely followed those of Swiss 2026, with slightly wider 3rd and 97th centiles in infancy and adolescence. CONCLUSION: Height, weight, BMI, and head circumference centiles aligned well with the Swiss 2026 growth references in Switzerland, demonstrating that hospital EHRs could contribute to future growth references.

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Determining the feasibility of randomising infants, children and young people to invasive and non-invasive urine sampling techniques

Waterfield, T.; Taylor Miller, P.; McDowell, C.; Agus, A.; Murphy, L.; Sanders, C.; Kearney, A.; Sherrett, F.; Wyche, J.; Hartshorn, S.; Bandi, S.; Blackwood, B.; Williams, N.; Roland, D.; Ferris, K.; Marshall, A.; Clarke, M.; Sutcliffe, A.; Woolfall, K.

2026-08-25 pediatrics 10.64898/2026.08.22.26361091 medRxiv
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Background Obtaining uncontaminated urine samples from children can be difficult. Clean catch urine (CCU) is non-invasive but may be slow and lead to a contaminated sample, whereas transurethral bladder catheterisation (TUBC) and suprapubic aspiration (SPA) are invasive. We assessed the feasibility of randomising children to a definitive trial. Methods FROG was a multicentre, randomised feasibility trial with a mixed-methods perspectives study, health-economic analysis and stakeholder consensus meeting. Children under 16 years requiring urine testing for suspected urinary tract infection (UTI) who could not provide a midstream sample were eligible for the feasibility trial. Parents, children and healthcare professionals were eligible for the perspectives study and consensus meeting. Results Of 703 children screened, 170 were offered the study and 99 were recruited. Overall, 64/170 (37.6%) consented to randomisation, exceeding the feasibility threshold (33%); 32 were allocated to CCU and 32 to TUBC. The allocated method was received by 46/64 (71.9%); delays, unsuccessful collection and distress contributed to non-receipt. Among participants with available cultures, contamination occurred in 2/12 (16.7%) allocated CCU and 0/6 allocated TUBC. No participants consented to randomisation involving SPA. The perspectives study included 14 parent interviews, 89 parent questionnaires and 28 staff across 5 focus groups and 1 interview. CCU and TUBC were considered acceptable, although participants balanced speed and accuracy against pain and distress. SPA availability and acceptability were limited. A total of 19 stakeholders attended the consensus meeting; 94% supported recruiting children aged under 18 months and 100% supported comparing CCU with TUBC, without SPA. Accuracy was the highest-ranked outcome. Conclusions A definitive trial comparing CCU-first with TUBC-first in children aged under 18 months is feasible. Its primary outcomes should reflect diagnostic accuracy and clinical consequences of contamination, with successful collection, collection time, pain and distress assessed as key secondary outcomes.

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Designing to Implement Genomics Informed ASCVD Risk Assessment: Patient and Clinician Perspectives about Identifying and Managing the Underlying Causes of Severe Hypercholesterolemia

Morgan, K. M.; Campbell-Salome, G.; Salvati, Z. M.; Kunnmann, M.; Cawley, D.; Carr, L.; Ceballos, L.; Gidding, S. S.; Kenny, E. E.; Kontorovich, A. R.; Naib, T.; Oetjens, M. T.; Pejaver, V.; Suckiel, S. A.; Tomey, M. I.; Jones, L. K.; Hallquist, M. L. G.

2026-08-12 genetic and genomic medicine 10.64898/2026.08.10.26360146 medRxiv
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Introduction: Severe hypercholesterolemia has four primary causes: monogenic familial hypercholesterolemia (FH), polygenic hypercholesterolemia (PRS), severely elevated Lp(a) concentration, and hypercholesterolemia due to environmental/lifestyle/behavioral factors (i.e., no known genetic etiology). Here, we explore patient and clinician perspectives about the identification and management of each of these causes. Methods: Patients with severe hypercholesterolemia with a primary language of English or Spanish and clinicians (primary care, genetic counseling, cardiology) across two health systems (Geisinger, Mount Sinai) participated in semi-structured interviews. Analysis was completed using an a priori codebook informed by Proctor?s implementation outcomes to identify themes influencing the identification and management of the underlying causes of severe hypercholesterolemia. Results: A total of 28 patients and 25 clinicians participated. Patients emphasized the importance of receiving results directly from their clinician, requested take-home resources that mirrored the information from their clinician, were motivated to seek multidisciplinary care, and anticipated all results would be actionable, but that high-risk PRS and elevated Lp(a) may require more support (e.g., specialists, education) to act on. Clinicians stressed the importance of integrating workflows (e.g., test ordering) with the electronic health record, highlighted LDL-C levels and multidisciplinary care coordination as key to management, explained how they would tailor care to individual patients, and expressed a more limited understanding of Lp(a) and PRS result types based on their clinical experiences and, therefore, hesitation about the recommended clinical actions. Conclusions: Patients and clinicians identified complementary determinants influencing the identification and management of the underlying cause of severe hypercholesterolemia. Participants welcomed risk information and requested a higher level of informational support and specialty expertise to appropriately manage high Lp(a) and PRS results. Integrating genomic information into risk assessments will require a partnership between general practitioners and specialists to provide a multidisciplinary approach to the identification and management of the underlying causes of severe hypercholesterolemia.

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Establishment and Efficacy of an Endoscopic Pathogen Visualization Literacy (EPVL) Training Program for Gastroenterologists Based on Fluorescence Rapid On-Site Evaluation (ROSE) Technology

Zhang, L.; Hou, Y.; Li, B.; Wu, K.; Zhang, j.; Yang, M.

2026-08-13 medical education 10.64898/2026.08.12.26360123 medRxiv
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ObjectiveTo establish a standardized training program for endoscopic pathogen visualization literacy (EPVL) based on fluorescence rapid on-site evaluation (ROSE) technology for gastroenterologists, and to evaluate its training efficacy. MethodsA prospective quasi-experimental study was conducted. A total of 54 gastroenterology trainees were non-randomly allocated into the EPVL training group (Group A, n=28, 16-hour comprehensive training) and the control group (Group B, n=26, 3.5-hour traditional teaching). Pre- and post-training assessments included theoretical examinations, fluorescence ROSE image interpretation tests (30 parallel images per set), interpretation speed measurement, and clinical decision-making integration evaluation. The primary outcome was the change in image interpretation accuracy, analyzed by ANCOVA with pre-test scores as the covariate. ResultsBaseline characteristics were comparable between groups (P>0.05 for all demographic variables and pre-test scores). Group A showed significant improvement in image interpretation accuracy from 57.8{+/-}13.6% pre-training to 82.5{+/-}11.2% post-training (improvement of 24.7%, paired t=-12.86, P<0.001), while Group B improved from 58.5{+/-}13.0% to 71.0{+/-}13.5% (improvement of 12.5%, paired t=-5.24, P<0.001). After ANCOVA adjustment for pre-test scores, the between-group difference was significant (F(1, 51)=10.95, P=0.0017, 2=0.177), with Cohens d=0.94 (large effect size). Interpretation speed in Group A (19.2{+/-}2.8 s/image) was significantly faster than in Group B (32.5{+/-}6.0 s/image, t=-10.45, P<0.001). Clinical decision-making scores were significantly higher in Group A (80.5{+/-}8.0 vs. 65.3{+/-}11.5, t=5.60, P<0.001). The Kappa agreement with the gold standard in Group A improved from 0.56{+/-}0.18 to 0.84{+/-}0.11 (t=-8.35, P<0.001). Participant satisfaction exceeded 88%. ConclusionThe EPVL training program significantly improves gastroenterologists fluorescence ROSE image interpretation accuracy, speed, and clinical decision-making integration, providing a novel and effective standardized training paradigm for digestive endoscopy education.

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Electronic health data exploring cardiorespiratory responses of transfusions in preterm infants: An international multicenter cohort study

Honore, A.; Rech, T.; Scrivens, A.; Binotto, I.; Zandvoort, C. S.; van der Staaij, H.; Peck, M.; Zivanovic, S.; Stanworth, S. J.; Hartley, C.; Dame, C.; Deschmann, E.; the Neonatal Transfusion Network,

2026-09-03 pediatrics 10.64898/2026.09.01.26361418 medRxiv
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Background and Objectives: Preterm infants are commonly transfused, yet direct cardiorespiratory effects of red blood cell (RBC) transfusions remain poorly understood. We explored the feasibility of using multicentre electronic health data (EHD) to study such cardiorespiratory responses. Methods: Highly granular routine EHD were collected from preterm infants born <32 weeks gestational age at three European centres. Heart rate, oxygen saturation, and respiratory rate were evaluated 12 hours before and after the RBC transfusion. Results: A total of 321 transfusions in 164 infants were analysed. Overall, there was no significant change in the rate of bradycardia and apnoea following transfusion. Cardiorespiratory parameters varied substantially between infants; e.g. 20% of transfusions were associated with an unexpected, significant increase in heart rate. Respiratory rate and oxygen saturation exhibited similarly heterogenous patterns following transfusion. In sub-group analysis, the proportion of transfusions with increased heart rate was significantly higher within the first two weeks than later (32% vs 13%, p=0.0019). Conclusions: Multicentre EHD extraction allows to identify otherwise masked short-term effects of RBC transfusions on cardiorespiratory parameters, possibly indicating cardiac or pulmonary overload. Such effects may vary with adaptation to anaemia. Analysing EHD may ultimately enable personalized transfusion practice.

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Short-term survival benefit associated with neonatal clinical trial participation: An observational cohort study in The Gambia

Brotherton, H.; Gai, A.; Walker, G.; Njie, Y.; Kapoor, S.; Hough, A.; Bittaye, M.; Okomo, U.; Cousens, S.; Roca, A.; Lawn, J. E.

2026-08-06 public and global health 10.64898/2026.08.04.26359594 medRxiv
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Background Trial participation effect, defined as a change in clinical outcomes associated with trial enrolment regardless of allocation, is understudied in neonatal trials in low- and middle income countries (LMIC), despite its importance for trial design, interpretation, and research ethics. This study aimed to quantify the trial participation effect and explore potential ways by which research participation may influence neonatal survival. Methods This observational cohort study included neonates weighing <2Kg and aged <24h who were admitted to a Gambian referral hospital and either enrolled in a clinical trial comparing early versus later KMC (eKMC trial;2018 to 2020) or not enrolled due to operational constraints and hence received standard, non research care. All infants were prospectively followed until inpatient discharge or death. The eKMC trial previously found no important effect of early KMC on all cause neonatal mortality. For this analysis, inpatient mortality rates were compared using a generalised linear model, adjusting for baseline differences in participant characteristics. Prospectively collected data on small and sick newborn care readiness and delivery during the trial period were used to explore how trial participation may have influenced survival. Results A total of 545 neonates were included: 279 enrolled in the trial and 266 not enrolled, predominantly due to the absence of an available caregiver. Baseline characteristics were similar between groups, although differences were seen in twin status, place of birth, and age at admission. Trial participation was associated with an absolute reduction in inpatient mortality of 6.3% (22.6% (63/279) among enrolled versus 28.9% (77/266) among non enrolled) and a relative reduction of 29% (aRR 0.71, 95% CI 0.53 to 0.96). This association varied by season, with no evidence of benefit during the dry season (aRR 0.97, 95% CI 0.60 to 1.58), but a 40% reduction in adjusted mortality risk during the rainy season (aRR 0.60, 95% CI 0.41 to 0.87)(Interaction test: p=0.086). Trial participants had access to laboratory diagnostics and received more intensive clinical monitoring, including higher staffing ratios, continuous pulse oximetry, structured education of carers on neonatal danger signs, and enhanced scrutiny of clinical management compared to neonates receiving routine care. Conclusion Trial participation was associated with a substantial reduction in inpatient mortality, suggesting that participation effects should be considered when designing, interpreting, and reporting neonatal clinical trials in LMIC settings. The association was evident only during the rainy season. The participation effect may have been mediated by increased clinical oversight and monitoring, additional nursing support, and access to diagnostic investigations, all of which should be prioritised within routine care to accelerate progress towards SDG neonatal survival targets.

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Psychosocial Health Inequalities and Socioeconomic Deprivation Gradients Among Preschool Children in Care and Not in Care: An Administrative Health Data Study

Bradford, D. R. R.; Abou Saab, Y.; McMahon, A. D.; Leyland, A. H.; Allik, M.; Brown, D.

2026-08-27 pediatrics 10.64898/2026.08.25.26361327 medRxiv
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Importance: Preschool children in care are at high risk for psychosocial health concerns. Population-based evidence is limited. Objective: Estimate prevalence of psychosocial health concerns in children in care and not in care, and assess care-status differences stratified by deprivation. Design: Population-based cross-sectional study using 27-30 Month Health Review data from April 2013 to March 2023. Setting: Universal health review program in Scotland. Participants: 7887 children in care and 445 547 children not in care. Exposures: Care status at review, classified as in care or not. Main Outcomes and Measures: Four outcome categories (emotional, behavioral, and/or attentional; personal and/or social; speech, language, and/or communication; and other developmental concerns) plus an aggregate indicator of any of the four. We estimated adjusted odds ratios between children in care and not in care, including variation with deprivation. Models adjusted for sex, age, ethnicity, and deprivation. Results: Psychosocial health concerns were more common in children in care (2290; 29.0%) than children not in care (77 836; 17.5%; relative risk 1.66). Concerns were more common in children in care across all outcomes. The adjusted odds ratio comparing children in care with children not in care for any recorded concern was 1.86 (95% CI, 1.77-1.96). Adjusted odds ratios varied by outcome from 1.57 (95% CI, 1.49-1.66) for speech, language, and/or communication concerns to 2.49 (95% CI, 2.34-2.66) for emotional, behavioral, and/or attentional concerns. Relative inequities between children in care and not in care decreased with increasing deprivation from aOR of 1.58 (95% CI, 1.45-1.72) in the most deprived fifth of areas to 2.61 (95% CI, 2.25-3.03) in the least deprived fifth. Prevalence of any recorded concern increased with deprivation in both care groups. The relative risk comparing the most deprived with least deprived fifth of areas was 1.46 (95% CI, 1.29-1.66) among children in care and higher at 2.34 (95% CI, 2.29-2.40) among children not in care. Conclusions and Relevance: Psychosocial health inequities are evident at an early age between children in care and not in care, and vary with deprivation. Support for children in care and children living in more deprived areas should be prioritized.

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Association of the EEG Correlate Of Injury to the Nervous System (COIN) Index with Focal Cerebral Injury in Children Receiving Extracorporeal Membrane Oxygenation

Ghasemzadeh, R.; Finlay, K.; Li, Y.; Numis, A. L.; Jain, R.; Amorim, E.; Benedetti, G. M.; Press, C.; Harrar, D. B.; Thomas, A. X.; Sacks, L. D.; Fox, C. K.; Caffarelli, M.

2026-08-10 neurology 10.64898/2026.08.06.26359920 medRxiv
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BACKGROUND Children receiving extracorporeal membrane oxygenation (ECMO) are at high risk for focal cerebral injury (FCI). There is emerging evidence that electroencephalography (EEG) may aid FCI detection. The EEG Correlate of Injury to the Nervous System (COIN) index quantifies and displays focal background asymmetries. We evaluated whether COIN is associated with FCI in pediatric ECMO. METHODS Retrospective, cross-sectional study of patients age 28 days to 21 years, on venoarterial ECMO at a tertiary children's hospital, who received EEG monitoring and neuroimaging during ECMO. COIN was calculated from all available EEG data. COIN of 0 implies a symmetric EEG and negative COIN values are observed with FCI. Median COIN values near FCI recognition time were compared to median COIN values from randomly selected control EEG batches using logistic regression. A receiver operator characteristic curve was used to identify multilevel FCI test ranges. Likelihood ratios were calculated to estimate the posttest FCI probability for each COIN range. RESULTS During the 8-year study period (2015-2023), 33 of 142 ECMO runs met study criteria for COIN analysis. Twelve patients (36%) had FCI. The COIN cutoff of -13.3 had 92% sensitivity and 67% specificity for FCI. The COIN cutoff of -27.7 had 67% sensitivity and 90% specificity. Likelihood ratios were 0.13 for COIN (0 to -13.3), 1.1 for COIN (-13.3 to -27.7), and 7.0 for COIN (< -27.7). Posttest probability was 0.02, 0.13, 0.49 in each respective range. CONCLUSION FCI on ECMO is associated with COIN-measured EEG asymmetry. COIN may support FCI risk-stratification during ECMO.

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Clinical outcomes and its determinants among neonates with neonatal sepsis admitted to selected Governmental hospitals in Addis Ababa, Ethiopia.

Gutema, R. M.; Namara, G. T.

2026-08-12 pediatrics 10.64898/2026.08.10.26360094 medRxiv
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Abstract Background: Even though significant advances in diagnosis, treatment, and prevention strategies have been implemented, neonatal sepsis remains a common concern in clinical practice, especially in low-resource countries. It is one of the major causes of death during the first month of life. This study aimed to assess clinical outcomes and predictors of mortality among neonates with neonatal sepsis admitted to public hospitals in selected Hospitals in Addis Ababa, Ethiopia. Methods: A hospital-based prospective cohort study design was conducted among 466 neonates admitted with neonatal sepsis from September 2024 to January 2025. All neonates who were admitted to selected Hospitals of Addis Ababa city after being clinically or laboratory-diagnosed with neonatal sepsis by the attending physician were included in the study. Data were entered into EpiData 4.2 and analyzed by SPSS version 26. Bivariate and multivariate Cox regression were used to identify the relationship between dependent and independent variables. Finally, variables with p-value [&le;] 0.05 were taken as significant factors associated with poor clinical outcome. Results: The study was conducted among 466 neonates admitted with neonatal sepsis. Of all neonates admitted with neonatal sepsis, 372 (79.8%) were discharged with good outcomes, and 94 (20.2%) had a poor outcome/died. Duration of ruptured membrane being >12hr (AOR=7.02, 95 % (CI: 1.85, 26.57), marital status /divorced (AOR=3.12, 95 % (CI: 1.67, 7.45),rural residence (AOR= 6.05, 95 % (CI: 2.03-16.53), assisted instrumental delivery (AOR= 5.99, 95 % (CI: 1.46-17.11), meconium-stained amniotic fluid ((AOR= 9.48, 95 % (CI: 0.49-18.61)), no initiate exclusive breast feed within one hour (AOR= 3.20, 95 % (CI: 0.90-7.52), chest in drawing (AOR= 5.81, 95 % (CI: 1.75-11.23) were significantly associated with neonatal mortality. Conclusion: Neonatal mortality was moderately high. Meconium-stained amniotic fluid, prolonged duration of ruptured membrane (>12hr), Mode of delivery (instrumental delivery), and chest in drawing are among the predictors of neonatal mortality. Keywords: -Clinical outcome,Neonatal sepsis, Mortality, predictors, Ethiopia.

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Chronic Pain in Canadian Children and Adolescents: A National Population-Based Analysis

Dol, J.; Chambers, C.; Parker, J. A.; Cormier, B.; Birnie, K. A.

2026-08-22 pediatrics 10.64898/2026.08.17.26360594 medRxiv
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Background: Chronic pain affects approximately 20% of children and youth worldwide and is associated with mental and physical health impacts. Canada-specific data on the prevalence of chronic pain in children and youth are limited, highlighting the need for current high-quality population-based estimates Aims: The aim of this study is to provide national estimates of self-reported chronic pain among Canadian children and youth by pain type (headache stomach ache, backache), sex (female, male), age group (5-11, 12-17 years) and province or territory. Methods: Publicly available data were used from the 2019 Canadian Health Survey on Children and Youth (CHSCY), a population-based survey conducted by Statistics Canada using a nationally representative sample of Canadian children and youth Results: Overall, headaches were the most commonly reported pain type (15.4%), followed by stomach aches (12.5%), and backaches (11.1%). Prevalence was consistently higher among females than males and among youth than children, with youth girls reporting the highest prevalence across all pain types. Prevalence also varied geographically, with some of the highest estimates observed in the Atlantic Provinces. Conclusions: Chronic pain affects substantial proportions of Canadian children and youth with disparities observed by pain type, sex, age, and geography. These findings under score pediatric chronic pain as an important public health issue and highlight the need for equity-oriented approaches that address the needs of populations experiencing the greatest burden.

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A Randomized Non-Inferiority Trial of an eHealth Delivery Alternative for Cancer Genetic Testing for Hereditary Cancer (eREACH2)

Lee, K. T.; Egleston, B.; Fetzer, D.; Domchek, S. M.; Fleisher, L.; Wen, K.-Y.; Wagner, L.; Roberts, S.; Howe, S.; Cacioppo, C.; Christiansen, J.; Karpink, K.; Selmani, E.; Mastaglio, E.; Weinberg, M.; Wood, E. M.; Feng, J.; John, S.; Schweickert, K.; Mcleod, B.; Bradbury, A. R.

2026-09-03 genetic and genomic medicine 10.64898/2026.09.01.26361920 medRxiv
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Background: Many at-risk patients lack access to genetic services due to a genetic counselor (GC) workforce shortage. Little is known about how digital alternatives impact patients with and without cancer who meet criteria for genetic testing. Methods: eREACH2 is a randomized 4-arm non-inferiority trial where pre-test (visit 1) and/or return of results (visit 2) GC counseling was replaced with a patient-centered digital intervention. Arms include: A (GC/GC), B (GC/digital), C (digital/GC) and D (digital/digital). Primary outcomes were non-inferiority in uptake of genetic services and change in genetic knowledge and general anxiety from baseline to post-disclosure of results (T0-T2). Secondary cognitive and affective outcomes were assessed using non-inferiority ANOVAs and equivalency chi-squared tests in intention-to-treat and per-protocol analyses. Findings: 773 participants were recruited nationwide; 46.6% from rural areas. Mean age was 51 years (range 20-87), 13% male, 12% non-white, 29% had less than a college education, and 33% had a personal history of cancer. 584 (76%) patients completed testing (14% had a positive result, 16% had a VUS). In the primary ITT analyses, we met the non-inferiority for uptake of genetic services and anxiety, but results were inconclusive for knowledge. Secondary outcomes were heterogeneous across arms. Arm C demonstrated consistently favorable effects, while Arms B and D showed less favorable outcomes in select domains (e.g. satisfaction and MICRA). Patients who received positive or VUS results via digital disclosure had significantly higher MICRA scores - indicating greater negative response to testing. Interpretation: In this large, randomized trial of patients with and without cancer, the eREACH intervention was effective for pre-test counseling, but inconclusive for digital disclosure of results. Exploratory analyses suggest that digital delivery could be a reasonable alternative for individuals receiving negative results, while those receiving positive or VUS results may derive some short-term psychosocial benefit from GC disclosure.

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Hepatitis B cell-free DNA in non-invasive prenatal testing as an early biomarker of viral infectivity

Dao, V. N.; Nguyen, P. T.; Tran, T. N.; Nguyen, N. H.; Tang, H.-S.; Boni, M. F.; Giang, H.; Phan, D. M.

2026-08-17 genetic and genomic medicine 10.64898/2026.08.15.26360031 medRxiv
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Non-invasive prenatal testing (NIPT) was initially developed to detect chromosomal abnormalities in fetuses through the analysis of cell-free fetal DNA in maternal blood. Recent advancements have expanded NIPT's applications to include the detection of viral infections during pregnancy. However, interpreting pathogen-derived cell-free DNA (cf-DNA) remains clinically complex. This study explores the clinical relevance of hepatitis B virus (HBV) cf-DNA using a dataset of approximately 500,000 NIPT visits and an independent validation cohort of 582 pregnant women (40 HBV-infected), aligned with HBV epidemiology from both population and individual perspectives. Our analysis reveals that HBV cf-DNA is a strong biomarker of high viral infectivity rather than a general marker of infection, suggesting its potential to identify pregnant women at heightened risk of vertical transmission by the end of the first trimester. Additionally, HBV-positive women showed a small but consistent reduction in fetal fraction relative to HBV-negative women across gestational weeks 9 - 17, an association compatible with an early effect of HBV on the placental contribution to cell-free DNA, although the observational design and unmeasured maternal covariates preclude causal inference.

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Biallelic IRAK4 Variants Associated with Severe Neurological Autoinflammation: An Expansion of the Clinical Phenotype

Wiener, E. K.; Rius, R.; Dominguez Gonzalez, C. A.; Vossough, A.; Whitehead, M. T.; Abraham, R.; Basu, A.; Debruyne, N.; Lin, L.; Prosser, B. L.; Felix, A. J.; Takanohashi, A.; Sullivan, K. E.; Maripuri, D. P.; Arnold, K.; Pizzino, A.; Bryan, A.; Gavazzi, F.; Bennett, M.; Hopkins, S. E.; Banwell, B.; Higdon, L.; Graveran-Perez, K.; Toback, C.; Sperling, M. R.; Gurnett, C.; Hamilton, N.; Bryant, C. E.; Canna, S. W.; Behrens, E. M.; Simons, C.; Vanderver, A.

2026-08-17 genetic and genomic medicine 10.64898/2026.08.14.26359722 medRxiv
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Background Monogenic autoinflammatory disorders arise from genetic defects that pathologically activate innate immunity. IRAK4, a serine/threonine kinase in the Myddosome pathway, mediates IL 1 and Toll like receptor signaling, driving proinflammatory cytokine and type I interferon responses. While biallelic loss of function IRAK4 variants cause an immunodeficiency, recent reports implicate biallelic IRAK4 variants in severe neuro and systemic autoinflammation (NASA). We investigated a child with a similar phenotype and screened unsolved autoinflammatory leukoencephalopathies in the Myelin Disorders Biorepository Project (MDBP). Methods Individuals with unexplained autoinflammatory leukoencephalopathy and no unifying molecular diagnosis were identified in the Myelin Disorders Biorepository Project (MDBP), and genome sequencing was reanalyzed to prioritize rare, protein altering and splice affecting variants. Candidate variants and their splicing consequences were interrogated with short read and targeted long read RNA sequencing, benchmarked against control PBMC and normal tissue transcriptomes. Nonsense mediated decay of transcripts was also assessed. Clinical, genetic, and treatment data were extracted by standardized deep phenotyping, and brain MRI was reviewed in consensus by two pediatric neuroradiologists. Results We identified six patients from five unrelated families with biallelic, rare IRAK4 variants presenting with severe, persistent autoinflammation without immunodeficiency. Variants included two homozygous and three compound heterozygous changes. All patients had a concordant clinical and radiologic syndrome: episodic, waxing and waning encephalopathy with refractory seizures; neuroimaging showed transient white matter edema that evolved to gliosis, superimposed on marked calcifications and ensuing cerebral atrophy. Biomarkers indicated neuroinflammation and anemia in all cases. Median age at neurologic symptom onset was 12.96 years (IQR 9.44). Immune suppressive therapies achieved partial benefit, but most patients had ongoing seizures, persistent neuroinflammation, and progressive disease, and without treatment, loss of life. Conclusion In these six patients, a strongly concordant clinical and radiological phenotype emerges of IRAK4-mediated autoinflammation, expanding the phenotypic and mutational spectrum of IRAK4 related disease. Further studies are needed to define mechanisms and optimal treatments.