Archives of Disease in Childhood - Fetal and Neonatal Edition最新文献

{"title":"Doxapram for apnoea of prematurity and neurodevelopmental outcomes at age 5-6 years.","authors":"Ludovic Tréluyer, Elodie Zana-Taieb, Pierre-Henri Jarreau, Valérie Benhammou, Pierre Kuhn, Mathilde Letouzey, Laetitia Marchand-Martin, Wes Onland, Véronique Pierrat, Lauren Saade, Pierre Yves Ancel, Héloïse Torchin","doi":"10.1136/archdischild-2023-326170","DOIUrl":"10.1136/archdischild-2023-326170","url":null,"abstract":"<p><strong>Objective: </strong>To assess the long-term neurodevelopmental impact of doxapram for treating apnoea of prematurity.</p><p><strong>Design: </strong>Secondary analysis of the French national cohort study EPIPAGE-2. Recruitment took place in 2011. A standardised neurodevelopmental assessment was performed at age 5-6 years. A 2:1 propensity score matching was used to control for the non-randomised assignment of doxapram treatment.</p><p><strong>Setting: </strong>Population-based cohort study.</p><p><strong>Patients: </strong>All children born before 32 weeks' gestation alive at age 5-6 years.</p><p><strong>Interventions: </strong>Blind and standardised assessment by trained neuropsychologists and paediatricians at age 5-6 years.</p><p><strong>Main outcome measures: </strong>Neurodevelopmental outcomes at age 5-6 years assessed by trained paediatricians and neuropsychologists: cerebral palsy, developmental coordination disorders, IQ and behavioural difficulties. A composite criterion for overall neurodevelopmental disabilities was built.</p><p><strong>Results: </strong>The population consisted of 2950 children; 275 (8.6%) received doxapram. Median (IQR) gestational age was 29.4 (27.6-30.9) weeks. At age 5-6 years, complete neurodevelopmental assessment was available for 60.3% (1780 of 2950) of children and partial assessment for 10.6% (314 of 2950). In the initial sample, children receiving doxapram had evidence of greater clinical severity than those not treated. Doxapram treatment was associated with overall neurodevelopmental disabilities of any severity (OR 1.43, 95% CI 1.07 to 1.92, p=0.02). Eight hundred and twenty-one children were included in the 2:1 matched sample. In this sample, perinatal characteristics of both groups were similar and doxapram treatment was not associated with overall neurodevelopmental disabilities (OR 1.09, 95% CI 0.76 to 1.57, p=0.63).</p><p><strong>Conclusions: </strong>In children born before 32 weeks' gestation, doxapram treatment for apnoea of prematurity was not associated with neurodevelopmental disabilities.</p>","PeriodicalId":8177,"journal":{"name":"Archives of Disease in Childhood - Fetal and Neonatal Edition","volume":" ","pages":"443-449"},"PeriodicalIF":4.4,"publicationDate":"2024-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139478147","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Fantoms.","authors":"Ben J Stenson","doi":"10.1136/archdischild-2024-327488","DOIUrl":"https://doi.org/10.1136/archdischild-2024-327488","url":null,"abstract":"","PeriodicalId":8177,"journal":{"name":"Archives of Disease in Childhood - Fetal and Neonatal Edition","volume":"109 4","pages":"343"},"PeriodicalIF":4.4,"publicationDate":"2024-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141426193","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"<u>Su</u>stained inflation and chest comp<u>r</u>ession <u>v</u>ersus 3:<u>1</u> chest compression to <u>v</u>entilation ratio during cardiopulmonary resuscitation of asphyxiated n<u>e</u>wborns (SURV1VE): A cluster randomised controlled trial.","authors":"Georg M Schmölzer, Gerhard Pichler, Anne Lee Solevåg, Brenda Hiu Yan Law, Souvik Mitra, Michael Wagner, Daniel Pfurtscheller, Maryna Yaskina, Po-Yin Cheung","doi":"10.1136/archdischild-2023-326383","DOIUrl":"10.1136/archdischild-2023-326383","url":null,"abstract":"<p><strong>Objective: </strong>In newborn infants requiring chest compression (CC) in the delivery room (DR) does continuous CC superimposed by a sustained inflation (CC+SI) compared with a 3:1 compression:ventilation (3:1 C:V) ratio decreases time to return of spontaneous circulation (ROSC).</p><p><strong>Design: </strong>International, multicenter, prospective, cluster cross-over randomised trial.</p><p><strong>Setting: </strong>DR in four hospitals in Canada and Austria, PARTICIPANTS: Newborn infants >28 weeks' gestation who required CC.</p><p><strong>Interventions: </strong>Hospitals were randomised to CC+SI or 3:1 C:V then crossed over to the other intervention.</p><p><strong>Main outcome measure: </strong>The primary outcome was time to ROSC, defined as the duration of CC until an increase in heart rate >60/min determined by auscultation of the heart, which was maintained for 60 s. Sample size of 218 infants (109/group) was sufficient to detect a clinically important 33% reduction (282 vs 420 s of CC) in time to ROSC. Analysis was intention-to-treat.</p><p><strong>Results: </strong>Patient recruitment occurred between 19 October 2017 and 22 September 2022 and randomised 27 infants (CC+SI (n=12), 3:1 C:V (n=15), two (one per group) declined consent). All 11 infants in the CC+SI group and 12/14 infants in the 3:1 C:V group achieved ROSC in the DR. The median (IQR) time to ROSC was 90 (60-270) s and 615 (174-780) s (p=0.0502 (log rank), p=0.16 (cox proportional hazards regression)) with CC+SI and 3:1 C:V, respectively. Mortality was 2/11 (18.2%) with CC+SI versus 8/14 (57.1%) with 3:1 C:V (p=0.10 (Fisher's exact test), OR (95% CI) 0.17; (0.03 to 1.07)). The trial was stopped due to issues with ethics approval and securing trial insurance as well as funding reasons.</p><p><strong>Conclusion: </strong>The time to ROSC and mortality was not statistical different between CC+SI and 3:1 C:V.</p><p><strong>Trial registration: </strong>NCT02858583.</p>","PeriodicalId":8177,"journal":{"name":"Archives of Disease in Childhood - Fetal and Neonatal Edition","volume":" ","pages":"428-435"},"PeriodicalIF":3.9,"publicationDate":"2024-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11228189/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139428410","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Randomised crossover study on pulse oximeter readings from different sensors in very preterm infants.","authors":"Christian Achim Maiwald, Christoph E Schwarz, Katrin Böckmann, Laila Springer, Christian F Poets, Axel Franz","doi":"10.1136/archdischild-2023-325961","DOIUrl":"10.1136/archdischild-2023-325961","url":null,"abstract":"<p><strong>Objective: </strong>In extremely preterm infants, different target ranges for pulse oximeter saturation (SpO₂) may affect mortality and morbidity. Thus, the impact of technical changes potentially affecting measurements should be assessed. We studied SpO₂ readings from different sensors for systematic deviations.</p><p><strong>Design: </strong>Single-centre, randomised, triple crossover study.</p><p><strong>Setting: </strong>Tertiary neonatal intensive care unit.</p><p><strong>Patients: </strong>24 infants, born at <32 weeks' gestation, with current weight <1500 g and without right-to-left shunt via a patent ductus arteriosus.</p><p><strong>Interventions: </strong>Simultaneous readings from three SpO₂ sensors (Red Diamond (RD), Photoplethysmography (PPG), Low Noise Cabled Sensors (LNCS)) were logged at 0.5 Hz over 6 hour/infant and compared with LNCS as control using analysis of variance. Sensor position was randomly allocated and rotated every 2 hours. Seven different batches each were used.</p><p><strong>Outcomes: </strong>Primary outcome was the difference in SpO₂ readings. Secondary outcomes were differences between sensors in the proportion of time within the SpO₂-target range (90-95 (100)%).</p><p><strong>Results: </strong>Mean gestational age at birth (±SD) was 27^4/7 (±2^3/7) weeks, postnatal age 20 (±20) days. 134 hours of recording were analysed. Mean SpO₂ (±SD) was 94.0% (±3.8; LNCS) versus 92.2% (±4.0; RD; p<0.0001) and 94.5% (±3.9; PPG; p<0.0001), respectively. Mean SpO₂ difference (95% CI) was -1.8% (-1.9 to -1.8; RD) and 0.5% (0.4 to 0.5; PPG). Proportion of time in target was significantly lower with RD sensors (84.8% vs 91.7%; p=0.0001) and similar with PPG sensors (91.1% vs 91.7%; p=0.63).</p><p><strong>Conclusion: </strong>There were systematic differences in SpO₂ readings between RD sensors versus LNCS. These findings may impact mortality and morbidity of preterm infants, particularly when aiming for higher SpO₂-target ranges (eg, 90-95%).</p><p><strong>Trial registration number: </strong>DRKS00027285.</p>","PeriodicalId":8177,"journal":{"name":"Archives of Disease in Childhood - Fetal and Neonatal Edition","volume":" ","pages":"391-396"},"PeriodicalIF":3.9,"publicationDate":"2024-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11228211/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138827898","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Parent-reported health outcomes at preschool age in preterm survivors: a population-based cohort study.","authors":"Sydney MacDonald, Alexandra Stratas, Anne R Synnes, Navjot Sandila, Marsha Campbell-Yeo, Prakesh S Shah, Satvinder Ghotra","doi":"10.1136/archdischild-2023-326136","DOIUrl":"10.1136/archdischild-2023-326136","url":null,"abstract":"<p><strong>Objective: </strong>Literature on health status (HS) and health-related quality of life of preterm survivors at preschool age is sparse. Further, little is known about the relationship between parent-reported HS outcomes and standardised neurodevelopmental outcomes measured in preterm survivors at preschool age. Our objective was to evaluate parent-reported child HS outcomes and their relationship to neurodevelopmental outcomes at 36 months of age in very preterm survivors.</p><p><strong>Design: </strong>Prospective population-based cohort study.</p><p><strong>Setting: </strong>Perinatal follow-up programme.</p><p><strong>Patients: </strong>Infants <31 weeks' gestational age born from 2014 to 2016.</p><p><strong>Outcome measures: </strong>Parents completed the Health Status Classification System for Pre-School Children questionnaire at 36 months. At the same age, neurodevelopmental assessments were completed to determine neurodevelopmental impairment (NDI). NDI was categorised as none, 'mild' or 'significant' (moderate or severe cerebral palsy, Bayley Scales of Infant and Toddler Development - Third Edition <70, blind or required hearing aid).</p><p><strong>Results: </strong>Of 118 children, 87 (73.7%) parents reported their child had an HS concern (mild: 61 (51%); moderate: 16 (13.6%); and severe: 10 (8.5%)). Mild and significant NDIs were observed in 17 (14.4%) and 14 (11.9%) children, respectively. For the 14 (12%) children with significant NDI, 7 (50.0%) parents reported severe and 4 (28.6%) reported moderate concerns. Conversely, for 26 (22%) children with parent-reported moderate to severe concerns, 11 (42.3%) met the criteria for significant NDI. There was a moderate positive correlation between parental concern and NDI status (Spearman correlation=0.46, p<0.0001).</p><p><strong>Conclusions: </strong>Parental HS concerns only moderately correlated with the NDI status. Of the 12% of children with significant NDI, only half of the parents reported severe HS concerns.</p>","PeriodicalId":8177,"journal":{"name":"Archives of Disease in Childhood - Fetal and Neonatal Edition","volume":" ","pages":"436-442"},"PeriodicalIF":4.4,"publicationDate":"2024-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138884008","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Top 10 research priorities for congenital diaphragmatic hernia in Australia: James Lind Alliance Priority Setting Partnership.","authors":"Roberto Chiletti, Courtney Vodopic, Emiko Hunt, Jess Lawer, Monique Bertinetti, Stephanie Malarbi, Valerie Kyritsis, Scott Petersen, David Stewart, Jean Hellstern, Michael Stewart, Leah Hickey, David G Tingay, Trisha M Prentice","doi":"10.1136/archdischild-2024-327108","DOIUrl":"https://doi.org/10.1136/archdischild-2024-327108","url":null,"abstract":"<p><strong>Objectives: </strong>The Gaps in the Congenital Diaphragmatic Hernia (CDH) Journey Priority Setting Partnership (PSP) was developed in collaboration with CDH Australia, James Lind Alliance (JLA) and the Murdoch Children's Research Institute to identify research priorities for people with CDH, their families and healthcare workers in Australasia.</p><p><strong>Design: </strong>Research PSP in accordance with the JLA standardised methodology.</p><p><strong>Setting: </strong>Australian community and institutions caring for patients with CDH and their families.</p><p><strong>Patients: </strong>CDH survivors, families of children born with CDH (including bereaved) and healthcare professionals including critical care physicians and nurses (neonatal and paediatric), obstetric, surgical, allied health professionals (physiotherapists, speech pathologists and speech therapists) and general practitioners.</p><p><strong>Main outcome measure: </strong>Top 10 research priorities for CDH.</p><p><strong>Results: </strong>377 questions, from a community-based online survey, were categorised and collated into 50 research questions. Through a further prioritisation process, 21 questions were then discussed at a prioritisation workshop where they were ranked by 21 participants (CDH survivors, parents of children born with CDH (bereaved and not) and 11 multidisciplinary healthcare professionals) into their top 10 research priorities.</p><p><strong>Conclusion: </strong>Stakeholders' involvement identified the top 10 CDH-related research questions, spanning from antenatal care to long-term functional outcomes, that should be prioritised for future research to maximise meaningful outcomes for people with CDH and their families.</p>","PeriodicalId":8177,"journal":{"name":"Archives of Disease in Childhood - Fetal and Neonatal Edition","volume":" ","pages":""},"PeriodicalIF":4.4,"publicationDate":"2024-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141330289","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Identifying neonatal transport research priorities: a modified Delphi consensus.","authors":"Aarti Mistry, Andrew Leslie, Shalini Ojha, Don Sharkey","doi":"10.1136/archdischild-2024-327213","DOIUrl":"https://doi.org/10.1136/archdischild-2024-327213","url":null,"abstract":"<p><strong>Objectives: </strong>With increasing advances in neonatal transport, a focused research strategy is required to increase the evidence base towards providing optimal care. We aimed to identify the most important neonatal transport research questions as prioritised by parents and healthcare professionals (HCPs).</p><p><strong>Design: </strong>Key stakeholders participated in a modified three-stage Delphi consensus process. Research questions were identified and submitted through two survey stages before the final priority setting workshop.</p><p><strong>Participants: </strong>Parents of babies who received neonatal care, neonatal HCPs and stakeholders.</p><p><strong>Outcome: </strong>Identify the top 10 research priorities for neonatal transport.</p><p><strong>Results: </strong>Overall, 269 survey responses from HCPs/stakeholders (n=161) and parents (n=108) were analysed from two survey rounds. Consensus was reached on 22 of 43 research priorities for the final priority setting workshop. The agreed top research priorities covered the domains of: (1) Pain assessment and management, (2) Long-term neurological outcomes, (3) Impact of transfer on birth-related brain injury, (4) Investigating risk of transport, (5) Safety restraints for infants, (6) Optimal temperature management, (7) Respiratory management and outcomes, (8) Benchmarking of important of transport measures, (9) Understanding transport environmental exposures, (10) Mental health and burden of transfer on families.</p><p><strong>Conclusion: </strong>We have identified the top research questions for neonatal transport through an extensive process actively engaging parents, HCPs and key stakeholders. Targeted funding and research resources, directed towards addressing these prioritised research areas, will inform evidence-based practices and international frameworks specific to neonatal transport, helping minimise research waste and ultimately improve outcomes for these high-risk infants and their families.</p>","PeriodicalId":8177,"journal":{"name":"Archives of Disease in Childhood - Fetal and Neonatal Edition","volume":" ","pages":""},"PeriodicalIF":4.4,"publicationDate":"2024-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141299862","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Response to 'Randomised crossover study on pulse oximeter readings from different sensors in very preterm infants' by Maiwald <i>et al</i>.","authors":"Vikrant Sharma, Steven J Barker, Augusto Sola, Daniel Cantillon, Rebecca Sorci, William C Wilson","doi":"10.1136/archdischild-2024-327165","DOIUrl":"https://doi.org/10.1136/archdischild-2024-327165","url":null,"abstract":"","PeriodicalId":8177,"journal":{"name":"Archives of Disease in Childhood - Fetal and Neonatal Edition","volume":" ","pages":""},"PeriodicalIF":4.4,"publicationDate":"2024-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141178843","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Survival and unique clinical practices of extremely preterm infants born at 22-23 weeks' gestation in Japan: a national survey.","authors":"Tetsuya Isayama, Kei Miyakoshi, Fumihiko Namba, Mariko Hida, Ichiro Morioka, Keisuke Ishii, Susumu Miyashita, Shuichiro Uehara, Yoshiaki Kinoshita, Sachie Suga, Katsutoshi Nakahata, Atsushi Uchiyama, Katsufumi Otsuki","doi":"10.1136/archdischild-2023-326355","DOIUrl":"https://doi.org/10.1136/archdischild-2023-326355","url":null,"abstract":"<p><strong>Objectives: </strong>To investigate prognosis and clinical practices of infants born at 22-23 weeks' gestational age (wkGA) in Japan.</p><p><strong>Design: </strong>A national institutional-level electronic questionnaire surveys performed in September 2021.</p><p><strong>Setting: </strong>All perinatal centres across Japan.</p><p><strong>Patients: </strong>Infants born at 22-23 wkGA in 2018-2020.</p><p><strong>Main outcome measures: </strong>Proportion of active resuscitation and survival at neonatal intensive care unit (NICU) discharge, and various clinical practices.</p><p><strong>Results: </strong>In total, 255 of 295 NICUs (86%) responded. Among them, 145 took care of infants born at 22-23 wkGA and answered the questions regarding their outcomes and care. In most NICUs (129 of 145 (89%)), infants born at 22⁺⁰ wkGA can be actively resuscitated. In almost half of the NICUs (79 of 145 (54%)), infants born at ≥22⁺⁰ wkGA were always actively resuscitated. Among 341 and 757 infants born alive at 22 and 23 wkGA, respectively, 85% (291 of 341) and 98% (745 of 757) received active resuscitation after birth. Among infants actively resuscitated at birth, 63% (183 of 291) and 80% (594 of 745) of infants born at 22 and 23 wkGA survived, respectively. The survey revealed unique clinical management for these infants in Japan, including delivery with caul in caesarean section, cut-cord milking after clamping cord, immediate intubation at birth, hydrocortisone use for chronic lung disease, analgesia/sedation use for infants on mechanical ventilation, routine echocardiography and brain ultrasound, probiotics administration, routine glycerin enema and skin dressing to prevent pressure ulcers.</p><p><strong>Conclusions: </strong>Many 22-23 wkGA infants were actively resuscitated in Japan and had a high survival rate. Various unique clinical practices were highlighted.</p>","PeriodicalId":8177,"journal":{"name":"Archives of Disease in Childhood - Fetal and Neonatal Edition","volume":" ","pages":""},"PeriodicalIF":4.4,"publicationDate":"2024-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141079678","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Timing and dosage of intrapartum prophylactic penicillin for preventing early-onset group B streptococcal disease: assessing maternal and umbilical cord blood concentration.","authors":"Stine Yde Nielsen, Elke Hoffmann-Lücke, Tine Brink Henriksen, Camilla Mirian Hartvigsen, Rikke Bek Helmig, Mohammed Rohi Khalil, Jens Kjølseth Møller, Lars Henning Pedersen, May Murra, Eva Greibe","doi":"10.1136/archdischild-2024-326986","DOIUrl":"https://doi.org/10.1136/archdischild-2024-326986","url":null,"abstract":"<p><strong>Objective: </strong>Timing of administration of antibiotics and concentrations in maternal blood and the umbilical cord blood are important prerequisites for optimal intrapartum antibiotic prophylaxis (IAP) of neonatal early-onset group B streptococcus (GBS) disease. This cohort study aimed to explore penicillin concentrations in mothers and infants at birth in relation to time elapsed from administration to delivery and to the minimal inhibitory concentration (MIC) for GBS.</p><p><strong>Main outcome measures: </strong>Penicillin G concentrations in maternal and umbilical cord blood in relation to time and dose from administration to time of delivery.</p><p><strong>Results: </strong>In 44 mother-infant dyads, median maternal penicillin G concentration was 0.2 mg/L (IQR 0-0.8 mg/L; range 0-1.6 mg/L). Median infant penicillin G concentration was 1.2 mg/L (IQR 0.5-5.0 mg/L; range 0-12.7 mg/L). In all infants (N=38) born less than 4 hours after the latest IAP administration, penicillin G concentrations far exceeded MIC (0.125 mg/L), even after short time intervals between IAP administration and birth. The highest plasma concentrations were reached in umbilical cord blood within 1 hour from IAP administration to birth.For 44 mother-infant dyads, maternal concentrations were very low compared with their infants'; particularly, very high concentrations were seen in the 20 infants with only one dose of IAP.</p><p><strong>Conclusion: </strong>High concentrations of penicillin G were found in umbilical cord blood of infants born less than 4 hours after IAP administration, well above the MIC for GBS.</p>","PeriodicalId":8177,"journal":{"name":"Archives of Disease in Childhood - Fetal and Neonatal Edition","volume":" ","pages":""},"PeriodicalIF":4.4,"publicationDate":"2024-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140904031","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}