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Owen JC, Garrick SP, Peterson BM, Berger PJ, Nold MF, Sehgal A, Nold-Petry CA. The role of interleukin-1 in perinatal inflammation and its impact on transitional circulation. Front Pediatr 2023; 11:1130013. [PMID: 36994431 PMCID: PMC10040554 DOI: 10.3389/fped.2023.1130013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Accepted: 02/13/2023] [Indexed: 03/31/2023] Open
Abstract
Preterm birth is defined as delivery at <37 weeks of gestational age (GA) and exposes 15 million infants worldwide to serious early life diseases. Lowering the age of viability to 22 weeks GA entailed provision of intensive care to a greater number of extremely premature infants. Moreover, improved survival, especially at extremes of prematurity, comes with a rising incidence of early life diseases with short- and long-term sequelae. The transition from fetal to neonatal circulation is a substantial and complex physiologic adaptation, which normally happens rapidly and in an orderly sequence. Maternal chorioamnionitis or fetal growth restriction (FGR) are two common causes of preterm birth that are associated with impaired circulatory transition. Among many cytokines contributing to the pathogenesis of chorioamnionitis-related perinatal inflammatory diseases, the potent pro-inflammatory interleukin (IL)-1 has been shown to play a central role. The effects of utero-placental insufficiency-related FGR and in-utero hypoxia may also be mediated, in part, via the inflammatory cascade. In preclinical studies, blocking such inflammation, early and effectively, holds great promise for improving the transition of circulation. In this mini-review, we outline the mechanistic pathways leading to abnormalities in transitional circulation in chorioamnionitis and FGR. In addition, we explore the therapeutic potential of targeting IL-1 and its influence on perinatal transition in the context of chorioamnionitis and FGR.
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Affiliation(s)
- Josephine C. Owen
- Ritchie Centre, Hudson Institute of Medical Research, Melbourne, VIC, Australia
- Department of Paediatrics, Monash University, Melbourne, VIC, Australia
| | - Steven P. Garrick
- Ritchie Centre, Hudson Institute of Medical Research, Melbourne, VIC, Australia
- Department of Paediatrics, Monash University, Melbourne, VIC, Australia
| | - Briana M. Peterson
- Ritchie Centre, Hudson Institute of Medical Research, Melbourne, VIC, Australia
- Department of Paediatrics, Monash University, Melbourne, VIC, Australia
| | - Philip J. Berger
- Ritchie Centre, Hudson Institute of Medical Research, Melbourne, VIC, Australia
- Department of Paediatrics, Monash University, Melbourne, VIC, Australia
| | - Marcel F. Nold
- Ritchie Centre, Hudson Institute of Medical Research, Melbourne, VIC, Australia
- Department of Paediatrics, Monash University, Melbourne, VIC, Australia
- Monash Newborn, Monash Children’s Hospital, Melbourne, VIC, Australia
| | - Arvind Sehgal
- Department of Paediatrics, Monash University, Melbourne, VIC, Australia
- Monash Newborn, Monash Children’s Hospital, Melbourne, VIC, Australia
| | - Claudia A. Nold-Petry
- Ritchie Centre, Hudson Institute of Medical Research, Melbourne, VIC, Australia
- Department of Paediatrics, Monash University, Melbourne, VIC, Australia
- Correspondence: Claudia A. Nold-Petry
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Comparison of the effect of continuous and standard intermittent bolus paracetamol infusion on patent ductus arteriosus. Eur J Pediatr 2021; 180:433-440. [PMID: 32995919 DOI: 10.1007/s00431-020-03822-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Revised: 09/04/2020] [Accepted: 09/24/2020] [Indexed: 12/25/2022]
Abstract
The aim of this study was to evaluate the effect of paracetamol on patent ductus arteriosus (PDA) closure and clinical outcomes in preterm infants when used as standard intermittent bolus and continuous intravenous (IV) infusion. Preterm neonates with birth weight (BW) ≤ 1500 g and gestational age (GA) ≤ 30 weeks were included in this study. During the study period, IV paracetamol therapy was given to all infants with hemodynamically significant patent ductus arteriosus (hsPDA). The patients were divided into the standard IV intermittent bolus infusion group and the continuous IV infusion group. Standard IV intermittent bolus paracetamol therapy was administered in the form of 15-mg/kg doses as 1-h infusions every 6 h for 5 days, while continuous IV paracetamol infusion therapy was administered as a 60-mg/kg/day dose continuously for 5 days. During the study period, 247 patients were evaluated, of which a total of 137 patients with hsPDA were included. There were no significant differences between the intermittent bolus and continuous infusion groups in terms of mean GA or BW. The continuous paracetamol infusion group had significantly higher rates of PDA-related morbidities, multiple paracetamol courses, and PDA ligation procedure compared with the standard intermittent bolus group.Conclusion: Our results were the first in the literature to compare IV paracetamol infusion regimens for PDA. Our results indicate that standard intermittent bolus infusion is still the most appropriate IV paracetamol regimen for the treatment of PDA.Trial registration: ClinicalTrials.gov Identifier: NCT04469413 What is Known: • Paracetamol has been proposed for the treatment of patent ductus arteriosus in preterm neonates. • There is no consensus on the duration and form of administration of paracetamol in hsPDA, and the information on this issue is insufficient. What is New: • Our study was the first in the literature to compare IV paracetamol infusion regimens for PDA. • Standard intravenous intermittent bolus paracetamol infusion was more effective in pharmacologic PDA closure compared with continuous intravenous paracetamol infusion and was associated with lower rates of PDA-related BPD, NEC, and need for ligation.
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Soliman RM, Mostafa FA, Abdelmassih A, Sultan E, Mosallam D. Patent ductus arteriosus in preterm infants; experience of a tertiary referral neonatal intensive care unit: prevalence, complications, and management. EGYPTIAN PEDIATRIC ASSOCIATION GAZETTE 2020. [DOI: 10.1186/s43054-020-00046-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Abstract
Background
Patent ductus arteriosus poses diagnostic and therapeutic dilemma for clinicians, diagnosis of persistent PDA, and determination of its clinical and hemodynamic significance are challenging. The aim of this study is to determine the prevalence of PDA in preterm infants admitted to our NICU, to report cardiac and respiratory complications of PDA, and to study the management strategies and their subsequent outcomes.
Result
Echocardiography was done for 152 preterm babies admitted to neonatal intensive care unit (NICU) on day 3 of life. Eighty-seven (57.2%) preterms had PDA; 54 (62.1%) non-hemodynamically significant PDA (non-hsPDA), and 33 (37.9%) hemodynamically significant PDA. Hemodynamically significant PDA received medical treatment (paracetamol 15 mg/kg/6 h IV for 3 days). Follow-up echocadiography was done on day 7 of life. Four babies died before echo was done on day 7. Twenty babies (68.9%) achieved closure after 1st paracetamol course. Nine babies received 2nd course paracetamol. Follow-up echo done on day 11 of life showed 4 (13.7%) babies achieved successful medical closure after 2nd paracetamol course; 5 babies failed closure and were assigned for surgical ligation. The group of non-hsPDA showed spontaneous closure after conservative treatment. Pulmonary hemorrhage was significantly higher in hsPDA group. Mortality was higher in hsPDA group than non-hsPDA group.
Conclusion
Echocardiographic evaluation should be done for all preterms suspected clinically of having PDA. We should not expose vulnerable population of preterm infants to medication with known side effects unnecessarily; we should limit medical closure of PDA to hsPDA. Paracetamol offers several important therapeutic advantages options being well tolerated and having more favorable side effects profile.
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King R, Colon M, Stanfel L, Tauber KA. Late Acetaminophen Therapy for Patent Ductus Arteriosus in the Preterm Neonate. J Pediatr Pharmacol Ther 2020; 25:507-513. [PMID: 32839654 DOI: 10.5863/1551-6776-25.6.507] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
OBJECTIVE In preterm infants, the standard pharmacologic treatment for a hemodynamically significant patent ductus arteriosus (hsPDA) is either ibuprofen or indomethacin. However, these medications may be less effective after 2 weeks of age. We investigated the use of acetaminophen in hsPDA closure beyond 2 weeks of age. METHODS An observational study of 11 infants, <30 weeks' gestation at birth and postnatal age > 2 weeks, who received acetaminophen treatment for their hsPDA. Echocardiograms (ECHOs), B-type natriuretic peptide (BNP) levels, and the fraction of inspired oxygen (FiO2) were obtained before and after treatment to analyze ductal characteristics. Renal and liver functions were monitored pretreatment and posttreatment to look for potential medication side effects. RESULTS Of the 10 infants with ECHO data for before and after acetaminophen treatments, 4/10 (40%) had a decrease in PDA size, with no infants having complete closure immediately posttreatment. Eight of 11 (73%) infants had a decreased FiO2 requirement after treatment. Of the 5 infants with pretreatment and posttreatment BNP data, 2/5 (40%) infants had a decrease in BNP level. One infant received an additional course of acetaminophen. Four infants underwent a surgical ligation. Two infants died. No medication side effects occurred with regard to hepatic and renal function. CONCLUSION Acetaminophen is a safe and effective pharmacologic treatment to reduce the significance of the hsPDA in some infants beyond 2 weeks of age, as shown by ECHO and BNP data.
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Sehgal A, Nitzan I, Krishnamurthy MB, Pharande P, Tan K. Toward rational management of patent ductus arteriosus: ductal disease staging and first line paracetamol. J Matern Fetal Neonatal Med 2019; 34:3940-3945. [PMID: 31885289 DOI: 10.1080/14767058.2019.1702949] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Aims: To study paracetamol (PCM) use as first line therapy for significant patent ductus arteriosus (sPDA) closure, stratified by echocardiography.Methods: In this retrospective observational study, a prepublished score comprising PDA size and velocity, PDA:left pulmonary artery ratio, diastolic flow in main and LPA, LA:Ao ratio and left ventricular:aortic ratio were included for shunt severity. Successful closure was defined a priori as closure or ≥50% reduction in score. Comparisons were made between infants with sPDA who were treated and not treated.Results: During November 2017-2018, 227 infants from 23 to 31+6 weeks' gestational age (GA) were admitted; 50 (22%) infants were diagnosed with PDA, 32 treated with PCM, overall treatment rate of 32/227 (14%). Successful therapy was noted in 23/32 (72%) and was higher when treated at ≤7 days (80 versus 68%, p = .68), in infants >26 weeks GA (62.5 versus 100%, p = .07) and BW >1000 g (65.4 versus 100%, p = .14). Univariate analysis noted statistical significance only for GA. Eighteen infants were managed conservatively. Treated infants had a lower GA and BW, higher composite ECHO score (14.4 ± 0.5 versus 19 ± 0.4, p < .001).Conclusions: Composite scoring helped reduce exposure, and focus more on infants with lower GA and BW with greater shunt severity.
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Affiliation(s)
- Arvind Sehgal
- Monash Newborn, Monash Children's Hospital, Clayton, Australia.,Department of Pediatrics, Monash University, Melbourne, Australia
| | - Itamar Nitzan
- Monash Newborn, Monash Children's Hospital, Clayton, Australia
| | | | - Pramod Pharande
- Monash Newborn, Monash Children's Hospital, Clayton, Australia.,Department of Pediatrics, Monash University, Melbourne, Australia
| | - Kenneth Tan
- Monash Newborn, Monash Children's Hospital, Clayton, Australia.,Department of Pediatrics, Monash University, Melbourne, Australia
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Lu J, Li Q, Zhu L, Chen C, Li Z. Oral ibuprofen is superior to oral paracetamol for patent ductus arteriosus in very low and extremely low birth weight infants. Medicine (Baltimore) 2019; 98:e16689. [PMID: 31374055 PMCID: PMC6709086 DOI: 10.1097/md.0000000000016689] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Paracetamol (acetaminophen) has been proposed as an alternative medication for closing hemodynamically significant patent ductus arteriosus (PDA). However, the clinical outcomes remain inconclusive in very low birth weight (VLBW) and extremely low birth weight (ELBW) infants.The aim of this study was to compare the efficacy and safety of oral paracetamol and ibuprofen for pharmacological closure of PDA in premature infants from a real-world study.This retrospective study enrolled 255 preterm infants with birthweights of ≤1.5 kg, and echocardiographically confirmed significant PDA. Subjects were classified into 3 groups: Group I (standard-dose ibuprofen group) received 10 mg/kg oral ibuprofen followed by 5 mg/kg/day for 2 days. Group II (high-dose ibuprofen group) received 10 mg/kg/day oral ibuprofen for 3 days. Group III (paracetamol group) received 15 mg/kg/6 h oral paracetamol for 3 days.On day 9 after medication start, PDA closure was achieved in 61 (71.7%) patients assigned to the high-dose ibuprofen group, (63.8%) in the standard-dose ibuprofen group, and 33 (37.9%) of those in the oral paracetamol group (P <.001). Oral standard-dose ibuprofen was more effective than oral paracetamol (P = .001). The ductus closed faster in the high-dose ibuprofen group than in the standard-dose group (median closure time 3.9 ± 1.0 versus 4.4 ± 1.0 days, P = .009). Total bilirubin significantly increased in the high-dose ibuprofen group (P = .02). No gastrointestinal, renal, or hematological adverse effects were reported. Subgroup analyses indicated paracetamol was minimally effective in ELBW infants (PDA closure 13%).This study demonstrated that paracetamol may be a poor medical alternative for PDA management in VLBW and ELBW infants. High dosage ibuprofen was associated with a faster clinical improvement and higher rate of PDA closure.
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Affiliation(s)
| | | | | | - Chao Chen
- Department of Neonatology, Children's Hospital of Fudan University, Shanghai, China
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Guimarães AFM, Araújo FDR, Meira ZMA, Tonelli HAF, Duarte GG, Ribeiro LC, Rezende GQM, Castilho SRT. Acetaminophen in low doses for closure of the ductus arteriosus of the premature. Ann Pediatr Cardiol 2019; 12:97-102. [PMID: 31143033 PMCID: PMC6521660 DOI: 10.4103/apc.apc_42_18] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Objective The objective of the study is to report the experience with acetaminophen in low doses as an alternative to the treatment of the ductus arteriosus of the preterm newborn. Materials and Methods Retrospective study including preterm newborns with patent ductus arteriosus who received oral acetaminophen because treatment with indomethacin had failed or is contraindicated. A dosage consisted of a first dose of 25 mg/kg and maintenance doses of 30 mg/kg/day, for 3 to 7 days. A second cycle was administered in cases of reopening of the ductus arteriosus. The rates of ductal closure and surgery were calculated. Patients were categorized into responder and nonresponder groups for acetaminophen, and the average values of ductal diameter, weight, gestational age, and postnatal age were compared. Results Eighty-seven preterm newborns, with a postnatal age from 3 to 27 days, with average values of ductus arteriosus equal to 2.5 ± 0.8 mm/kg, gestational age 27.2 ± 1.9 weeks, and birth weight 888.9 ± 241 g, received acetaminophen for 3 to 7 days. A second cycle was administered in 15 preterm newborns. The ductus closure rate, after one or two cycles, was 74.7%, and the recommendations for surgical closure were progressively reduced from 50% in the 1st year to 6.2% in the past year. Lower ductal closure rate occurred in the group of newborns with the lowest average weight (P = 0.018), the highest average ductal diameter (P = 0.002), and the lowest average gestational age (P = 0.09). Postnatal age at the start of acetaminophen use was shown to be irrelevant regarding the treatment (P = 0.591). Conclusions Acetaminophen in low doses showed to be an effective alternative for the closure of the ductus arteriosus for preterm newborns in whom treatment with indomethacin or ibuprofen failed or was contraindicated.
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Affiliation(s)
- Adriana Furletti Machado Guimarães
- Department of Pediatrics, Division of Neonatology, Hospital Foundation of Minas Gerais State, Minas Gerais, Brazil.,Department of Pediatrics, Division of Pediatric Cardiology, Clinics Hospital of the Federal University of Minas Gerais, Minas Gerais, Brazil
| | - Fátima Derlene Rocha Araújo
- Department of Pediatrics, Division of Pediatric Cardiology, Clinics Hospital of the Federal University of Minas Gerais, Minas Gerais, Brazil
| | - Zilda Maria Alves Meira
- Department of Pediatrics, Division of Pediatric Cardiology, Clinics Hospital of the Federal University of Minas Gerais, Minas Gerais, Brazil.,Department of Pediatrics, Division of Pediatric Cardiology, School of Medicine, Federal University of Minas Gerais, Minas Gerais, Brazil
| | - Henrique Assis Fonseca Tonelli
- Department of Pediatrics, Division of Pediatric Cardiology, Clinics Hospital of the Federal University of Minas Gerais, Minas Gerais, Brazil
| | - Guilherme Gomes Duarte
- Department of Pediatrics, Division of Pediatric Cardiology, Clinics Hospital of the Federal University of Minas Gerais, Minas Gerais, Brazil
| | - Lívia Castro Ribeiro
- Department of Pediatrics, Division of Pediatric Cardiology, Clinics Hospital of the Federal University of Minas Gerais, Minas Gerais, Brazil
| | - Gabriele Queiroz Monteiro Rezende
- Department of Pediatrics, Division of Neonatology, Hospital Foundation of Minas Gerais State, Minas Gerais, Brazil.,Department of Pediatrics, Division of Pediatric Cardiology, Clinics Hospital of the Federal University of Minas Gerais, Minas Gerais, Brazil
| | - Sandra Regina Tolentino Castilho
- Department of Pediatrics, Division of Pediatric Cardiology, Clinics Hospital of the Federal University of Minas Gerais, Minas Gerais, Brazil
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Sehgal A, McNamara PJ. International perspective on management of a patent ductus arteriosus: Lessons learned. Semin Fetal Neonatal Med 2018. [PMID: 29534972 DOI: 10.1016/j.siny.2018.03.002] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Whereas association between a patent ductus arteriosus (PDA) and neonatal morbidities has been well described, consensus has not been reached on whether the relationship is causal, on benefit of (or lack of) treatment, on factors guiding the 'need to treat', and on treatment strategies. Trials to date have primarily focused on the narrow outcome of successful ductal closure. Evidence from several retrospective studies has suggested that management may be modified with increased use of conservative treatment. A paradigm shift has resulted in decreased use of treatments to close the PDA in some centres. This approach cites the lack of demonstrable improvement in short- and long-term respiratory and neurodevelopmental outcomes as an argument. This article reviews current understanding of the wide variation in practice at either institutional, regional, national, or international level. It discusses the potential contributors to variability in diagnostic ascertainment and therapeutic intervention.
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Affiliation(s)
- Arvind Sehgal
- Monash Newborn, Monash Children's Hospital, Melbourne, Australia; Department of Pediatrics, Monash University, Melbourne, Australia.
| | - Patrick J McNamara
- Department of Paediatrics, University of Toronto, Toronto, Canada; Department of Physiology, University of Toronto, Toronto, Canada; Division of Neonatology, Hospital for Sick Children, Toronto, Canada
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9
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Late oral acetaminophen versus immediate surgical ligation in preterm infants with persistent large patent ductus arteriosus. J Thorac Cardiovasc Surg 2018; 156:1937-1944. [PMID: 30007780 DOI: 10.1016/j.jtcvs.2018.05.098] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/24/2017] [Revised: 04/15/2018] [Accepted: 05/17/2018] [Indexed: 11/21/2022]
Abstract
OBJECTIVE The study objective was to evaluate the association of oral acetaminophen therapy versus immediate surgical ligation with neonatal outcomes in infants with persistent patent ductus arteriosus. METHODS We performed a retrospective cohort study of preterm infants born 28+6 weeks or less gestational age with persistent large patent ductus arteriosus being considered for surgical ligation after unsuccessful medical therapy. Infants in epoch 1 (July 2009 to June 2012) were immediately referred for ligation, and infants in epoch 2 (July 2012 to June 2015) were treated with oral acetaminophen and referred for ligation in the absence of improvement. The primary outcome was a composite of death or chronic lung disease. RESULTS A total of 92 infants with median (interquartile range) gestational age 25.2 weeks (24.4-26.3) had persistent large patent ductus arteriosus (43 in epoch 1, 49 in epoch 2). Infants in epoch 2 had decreased surgical ligation (26 [53%] vs 31 [72%]; adjusted odds ratio [aOR], 0.32; 95% confidence interval [CI], 0.12-0.89) but increased chronic lung disease (36 [73%] vs 25 [58%]; aOR, 3.34; 95% CI, 1.05-10.58) and increased death/chronic lung disease of borderline significance (39 [80%] vs 29 [67%]; aOR, 3.09; 95% CI, 0.99-9.63). Infants in epoch 2 took longer to wean off of positive pressure ventilation (28.5 vs 24 days after enrollment; aOR, 0.52; 95% CI, 0.31-0.85). CONCLUSIONS Late oral acetaminophen therapy for infants with persistent patent ductus arteriosus is associated with reduced surgical ligation but increased chronic lung disease. In light of a lack of improvement in clinical outcomes, the individual contributory effects of acetaminophen, surgical ligation, and prolonged exposure to patent ductus arteriosus require further study to define the optimal approach.
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Jasani B, Weisz DE, McNamara PJ. Evidence-based use of acetaminophen for hemodynamically significant ductus arteriosus in preterm infants. Semin Perinatol 2018; 42:243-252. [PMID: 29958702 DOI: 10.1053/j.semperi.2018.05.007] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
While cyclooxygenase inhibitors have been the most common medications used to facilitate earlier closure of patent ductus arteriosus in preterm infants, adverse effects and variable efficacy have highlighted a need for alternative options. Acetaminophen facilitates ductal closure via an alternate pathway of prostaglandin inhibition. Despite treatment with high doses, toxicity is uncommon in preterm infants, possibly due to immature hepatic metabolism. Pooled data from randomized clinical trials of early treatment demonstrate that acetaminophen has similar efficacy as cyclooxygenase inhibitors for PDA closure with a favorable side effect profile and without any apparent increase in adverse neonatal outcomes. Acetaminophen may therefore be an ideal first-line agent among moderately and extremely preterm infants, though there is a paucity of data from controlled trials regarding its use in infants at the border of viability (gestation age ≤25 weeks). Evidence from clinical studies of limited quality supports acetaminophen treatment as rescue therapy for infants with persistent PDA after unsuccessful cyclooxygenase inhibitor treatment, including those being considered for surgical ligation.
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Affiliation(s)
- B Jasani
- Division of Neonatology, Hospital for Sick Children, 555 University Ave, Toronto, Ontario M5G 1X8, Canada; Department of Newborn and Developmental Pediatrics, Sunnybrook Health Sciences Centre, Toronto, Canada
| | - D E Weisz
- Department of Paediatrics, University of Toronto, Toronto, Canada; Department of Newborn and Developmental Pediatrics, Sunnybrook Health Sciences Centre, Toronto, Canada
| | - P J McNamara
- Division of Neonatology, Hospital for Sick Children, 555 University Ave, Toronto, Ontario M5G 1X8, Canada; Department of Paediatrics, University of Toronto, Toronto, Canada; Department of Physiology, University of Toronto, Toronto, Canada.
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Sallmon H, Koehne P. Further Experience with Oral Paracetamol as a Rescue Therapy for Patent Ductus Arteriosus in Preterm Infants. Pediatr Cardiol 2018; 39:411-412. [PMID: 29218362 DOI: 10.1007/s00246-017-1791-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/20/2017] [Accepted: 12/01/2017] [Indexed: 11/30/2022]
Affiliation(s)
- Hannes Sallmon
- Department of Neonatology, Charité - Universitätsmedizin Berlin, Augustenburger Platz 1, 13353, Berlin, Germany.
| | - Petra Koehne
- Department of Neonatology, Charité - Universitätsmedizin Berlin, Augustenburger Platz 1, 13353, Berlin, Germany
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