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Hoffmann JK, Khazal Z, Apers W, Sharma P, Weismann CG, Kaganov K, Wheeler CR, Farias M, Porras D, Levy P, Morton SU. Who Still Gets Ligated? Reasons for Persistence of Surgical Ligation of the Patent Ductus Arteriosus Following Availability of Transcatheter Device Occlusion for Premature Neonates. J Cardiovasc Dev Dis 2024; 11:132. [PMID: 38786954 PMCID: PMC11122133 DOI: 10.3390/jcdd11050132] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2024] [Revised: 04/09/2024] [Accepted: 04/20/2024] [Indexed: 05/25/2024] Open
Abstract
(1) Background: To identify reasons for the persistence of surgical ligation of the patent ductus arteriosus (PDA) in premature infants after the 2019 Food and Drug Administration (FDA) approval of transcatheter device closure; (2) Methods: We performed a 10-year (2014-2023) single-institution retrospective study of premature infants (<37 weeks) and compared clinical characteristics and neonatal morbidities between neonates that underwent surgical ligation before (epoch 1) and after (epoch 2) FDA approval of transcatheter closure; (3) Results: We identified 120 premature infants that underwent surgical ligation (n = 94 before, n = 26 after FDA approval). Unfavorable PDA morphology, active infection, and recent abdominal pathology were the most common reasons for surgical ligation over device occlusion in epoch 2. There were no differences in demographics, age at closure, or outcomes between infants who received surgical ligation in the two epochs; (4) Conclusions: Despite increasing trends for transcatheter PDA closure in premature infants, surgical ligation persists due to unfavorable ductal morphology, active infection, or abdominal pathology.
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Affiliation(s)
- Julia K. Hoffmann
- Division of Newborn Medicine, Department of Pediatrics, Boston Children’s Hospital, Boston, MA 02115, USA (P.L.)
| | - Zahra Khazal
- Division of Newborn Medicine, Department of Pediatrics, Boston Children’s Hospital, Boston, MA 02115, USA (P.L.)
| | - Wievineke Apers
- Division of Newborn Medicine, Department of Pediatrics, Boston Children’s Hospital, Boston, MA 02115, USA (P.L.)
| | - Puneet Sharma
- Division of Newborn Medicine, Department of Pediatrics, Boston Children’s Hospital, Boston, MA 02115, USA (P.L.)
| | - Constance G. Weismann
- Department of Pediatric Cardiology, Skåne University Hospital, Department of Clinical Sciences, Lund University, 221 00 Lund, Sweden
- Department of Pediatric Cardiology and Pediatric Intensive Care, Ludwig Maximilian University, 80539 Munich, Germany
| | - Kira Kaganov
- Department of Neonatology, Dana Dwek Children’s Hospital, Tel Aviv Sourasky Medical Center, Tel Aviv 6423906, Israel
| | - Craig R. Wheeler
- Departments of Respiratory Care and Extracorporeal Membrane Oxygenation, Boston Children’s Hospital, Boston, MA 02115, USA
| | - Michael Farias
- Department of Cardiology, Boston Children’s Hospital, Boston, MA 02115, USA
| | - Diego Porras
- Department of Cardiology, Boston Children’s Hospital, Boston, MA 02115, USA
| | - Philip Levy
- Division of Newborn Medicine, Department of Pediatrics, Boston Children’s Hospital, Boston, MA 02115, USA (P.L.)
| | - Sarah U. Morton
- Division of Newborn Medicine, Department of Pediatrics, Boston Children’s Hospital, Boston, MA 02115, USA (P.L.)
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2
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Matoq AA, Kernizan D, Radtke W. Transcatheter recanalisation for absent intra-pericardial pulmonary arteries. Cardiol Young 2024:1-5. [PMID: 38577776 DOI: 10.1017/s1047951124000696] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 04/06/2024]
Abstract
Unilateral absence of intra-pericardial pulmonary artery is a rare congenital malformation. If untreated, it can lead to morbidity and mortality in adulthood. Early intervention and restoration of physiologic pulmonary blood flow is necessary. Transcatheter stenting as initial intervention has been rarely reported. We present transcatheter recanalisation and stenting of the obliterated ductus in two newborns with unilateral absence of intra-pericardial pulmonary artery with cross-sectional imaging, procedural details, angiography, and follow up to surgical repair. We believe that such procedure promotes ipsilateral pulmonary vasculature growth to facilitate unifocalization surgery at a later age.
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Affiliation(s)
- Amr A Matoq
- Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | | | - Wolfgang Radtke
- Nemours Cardiac Center, Alfred I DuPont Hospital for Children, Wilmington, DE, USA
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3
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Gillam-Krakauer M, Reese J. We Still Don't Know When to Close a Patent Ductus Arteriosus in Infants Born Very Premature. J Pediatr 2024; 265:113817. [PMID: 37926295 DOI: 10.1016/j.jpeds.2023.113817] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Accepted: 11/01/2023] [Indexed: 11/07/2023]
Affiliation(s)
- Maria Gillam-Krakauer
- Mildred T. Stahlman Division of Neonatology, Vanderbilt University Medical Center, Nashville, Tennessee.
| | - Jeff Reese
- Mildred T. Stahlman Division of Neonatology, Vanderbilt University Medical Center, Nashville, Tennessee
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4
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Loeffler KA, Behere SP, Williams PK, Nakamura Y, Burkhart HM, Campbell MD. Reduced morbidity with early surgical ligation of patent ductus arteriosus in extremely low birth weight infants: a retrospective single-centre study. Cardiol Young 2024:1-6. [PMID: 38196381 DOI: 10.1017/s1047951123004432] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/11/2024]
Abstract
INTRODUCTION Failure of the patent ductus arteriosus to close is common among extremely low birth weight neonates and has been associated with increased morbidities. The objective of this study was to compare outcomes between early and late surgical ligation in extremely low birth weight patients. METHODS This was a single-centre retrospective cohort study of infants who required surgical closure of patent ductus arteriosus between January 2017 and August 2022. RESULTS A total of 43 neonates were identified with birth weight less than 1 kg that underwent surgical patent ductus arteriosus ligation. Compared to the late ligation group, the early ligation group experienced fewer total days of mechanical ventilation (43.9 days vs. 97.2 days, p < 0.05) and a shorter length of hospital stay (114.2 days vs. 169.0 days, p < 0.05). CONCLUSION Early surgical ligation of haemodynamically significant patent ductus arteriosus in extremely low birth weight neonates may improve hospital morbidity, including improved ventilatory outcomes and a shorter length of stay.
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Affiliation(s)
| | - Shashank P Behere
- University of Oklahoma Health Science Center, Oklahoma City, OK, USA
| | | | - Yuki Nakamura
- University of Oklahoma Health Science Center, Oklahoma City, OK, USA
| | - Harold M Burkhart
- University of Oklahoma Health Science Center, Oklahoma City, OK, USA
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Villamor E, van Westering-Kroon E, Gonzalez-Luis GE, Bartoš F, Abman SH, Huizing MJ. Patent Ductus Arteriosus and Bronchopulmonary Dysplasia-Associated Pulmonary Hypertension: A Bayesian Meta-Analysis. JAMA Netw Open 2023; 6:e2345299. [PMID: 38015504 PMCID: PMC10685885 DOI: 10.1001/jamanetworkopen.2023.45299] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Accepted: 10/17/2023] [Indexed: 11/29/2023] Open
Abstract
Importance Bronchopulmonary dysplasia (BPD) is often associated with pulmonary vascular disease and secondary pulmonary hypertension (PH). The pathogenesis of BPD-associated PH (BPD-PH) is complex and involves prenatal and postnatal factors that disrupt pulmonary vascular development, and patent ductus arteriosus (PDA) is a factor potentially associated with risk of BPD-PH that has been identified in very recent studies. Objective To explore the association of PDA with BPD-PH using a bayesian model-averaged (BMA) meta-analysis of studies. Data Sources PubMed and Embase were searched up to April 2023. Key search terms included BPD and PH. Study Selection Studies examining infants with gestational age 32 weeks or less and reporting data on PDA and risk of BPD-PH. Data Extraction and Synthesis This study followed the Preferred Reporting Items for Systematic Reviews and Meta-Analyses and the Meta-Analysis of Observational Studies in Epidemiology reporting guidelines. Two independent reviewers extracted data, with a third reviewer checking for accuracy and completeness. Data pooling and effect size calculations were performed by BMA. Main Outcomes and Measures The primary outcome was BPD-PH. BMA was used to calculate Bayes factors (BFs). The BF10 is the ratio of the probability of the data under the alternative hypothesis (H1, association of PDA with BPD-HP) over the probability of the data under the null hypothesis (H0). Results A total of 32 studies (8513 infants) were included. BMA showed that the evidence in favor of H1 was weak for any PDA (BF10 = 2.90; 10 studies), moderate for hemodynamically significant PDA (BF10 = 3.77; 3 studies), and extreme for surgically ligated or catheter-occluded PDA (BF10 = 294.9; 16 studies). In contrast, the evidence in favor of H0 was weak for medically treated PDA (BF10 = 0.55; 6 studies). In addition, BMA found strong evidence in favor of H1 when prolonged exposure to PDA was analyzed as a dichotomous variable (BF10 = 11.80; 6 studies) and extreme evidence (BF10 = 113.60; 3 studies) when PDA exposure time was analyzed as a continuous variable. Conclusions and Relevance In this bayesian meta-analysis, the data suggest that prolonged exposure to PDA might be associated with increased risk of pulmonary vascular disease in extremely preterm infants. This highlights the need to monitor for PH in high-risk preterm infants with prolonged exposure to PDA and to incorporate PH risk into clinical decisions regarding PDA management.
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Affiliation(s)
- Eduardo Villamor
- Division of Neonatology, Department of Pediatrics, MosaKids Children’s Hospital, Maastricht University Medical Center (MUMC+), School for Oncology and Reproduction (GROW), Maastricht University, Maastricht, The Netherlands
| | - Elke van Westering-Kroon
- Division of Neonatology, Department of Pediatrics, MosaKids Children’s Hospital, Maastricht University Medical Center (MUMC+), School for Oncology and Reproduction (GROW), Maastricht University, Maastricht, The Netherlands
| | - Gema E. Gonzalez-Luis
- Department of Pediatrics, Hospital Universitario Materno-Infantil de Canarias, Las Palmas de Gran Canaria, Spain
| | - František Bartoš
- Department of Psychology, University of Amsterdam, Amsterdam, The Netherlands
| | - Steven H. Abman
- Pediatric Heart Lung Center, Department of Pediatrics, University of Colorado Anschutz School of Medicine and Children’s Hospital Colorado, Aurora
| | - Maurice J. Huizing
- Division of Neonatology, Department of Pediatrics, MosaKids Children’s Hospital, Maastricht University Medical Center (MUMC+), School for Oncology and Reproduction (GROW), Maastricht University, Maastricht, The Netherlands
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6
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Lee J, Lee CYM, Naiduvaje K, Wong Y, Bhatia A, Ereno IL, Ho SKY, Yeo CL, Rajadurai VS. Trends in neonatal mortality and morbidity in very-low-birth-weight (VLBW) infants over a decade: Singapore national cohort study. Pediatr Neonatol 2023; 64:585-595. [PMID: 36967293 DOI: 10.1016/j.pedneo.2022.12.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Revised: 11/28/2022] [Accepted: 12/20/2022] [Indexed: 06/18/2023] Open
Abstract
BACKGROUND Very preterm infants are at risk for neurodevelopmental impairment because of postnatal morbidities. This study aims to (1) compare the outcomes of very-low-birth-weight (VLBW) infants in Singapore during two time periods over a decade; 2) compare performances among Singaporean neonatal intensive care units (NICUs); and 3) compare a Singapore national cohort with one from the Australian and New Zealand Neonatal Network (ANZNN). METHODS Singapore national data on VLBW infants born during two periods, 2007-2008 (SG2007, n = 286) and 2015-2017 (SG2017, n = 905) were extracted from patient medical records. The care practices and clinical outcomes among three Singapore NICUs were compared using SG2017 data. Third, using data from the ANZNN2017 annual report, infants with gestational age (GA) ≤29 weeks in SG2017 were compared with their Oceania counterparts. RESULTS SG2017 had 9.9% higher usage of antenatal steroids (p < 0.001), 8% better survival for infants ≤26 weeks (p = 0.174), and used 12.7% lesser nonsteroidal anti-inflammatory drugs for patent ductus arteriosus closure (p < 0.001) than those of SG2007 cohort. Rate of late-onset sepsis (LOS) was almost halved (7.4% vs. 14.0%, p < 0.001), and exclusive human milk feeding after discharge increased threefold (p < 0.001). SG2017, in contrast, had a higher rate of chronic lung disease (CLD) (20.0% vs. 15.1%, p = 0.098). Within SG2017, the rates of LOS, CLD, and human milk feeding varied significantly between the three NICUs. When compared with ANZNN2017, SG2017 had significantly lower rates of LOS for infants ≤25 weeks (p = 0.001), less necrotizing enterocolitis for infants ≤27 weeks (p = 0.002), and less CLD across all GA groups. CONCLUSION Postnatal morbidities and survival rates for VLBW infants in Singapore have improved over a decade. Outcomes for VLBW infants varied among three Singapore NICUs, which provide a rationale for collaboration to improve clinical quality. The outcomes of Singaporean VLBW infants were comparable to those of their ANZNN counterparts.
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Affiliation(s)
- Jiun Lee
- Department of Neonatology, Khoo Teck Puat - National University Children's Medical Institute, National University Hospital, Singapore.
| | - Cheryl Yen May Lee
- Department of Paediatrics, Khoo Teck Puat - National University Children's Medical Institute, National University Hospital, Singapore
| | - Krishnamoorthy Naiduvaje
- Department of Neonatology, Khoo Teck Puat - National University Children's Medical Institute, National University Hospital, Singapore
| | - Yoko Wong
- Singapore Clinical Research Institute, Singapore
| | - Ashwani Bhatia
- Department of Neonatology, KK Women's and Children's Hospital, Singapore
| | | | - Selina Kah Yin Ho
- Department of Neonatal and Developmental Medicine, Singapore General Hospital, Singapore
| | - Cheo Lian Yeo
- Department of Neonatal and Developmental Medicine, Singapore General Hospital, Singapore
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7
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Sahai I, Ghosh B, Agrawal G, Christopher J, Rao T. A Rare Association of Patent Ductus Arteriosus (PDA) With Persistent Left Superior Vena Cava (PLSVC) and Unroofed Coronary Sinus (UCS) Terminating Into Left Atrium (LA): A Case Report of an Indian Infant. Cureus 2022; 14:e30124. [DOI: 10.7759/cureus.30124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Accepted: 10/10/2022] [Indexed: 11/05/2022] Open
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8
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Wheeler CR, Vogel ER, Cusano MA, Friedman KG, Callahan R, Porras D, Ibla JC, Levy PT. Definitive Closure of the Patent Ductus Arteriosus in Preterm Infants and Subsequent Short-Term Respiratory Outcomes. Respir Care 2022; 67:594-606. [PMID: 35473850 PMCID: PMC9994254 DOI: 10.4187/respcare.09489] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/10/2023]
Abstract
A persistent patent ductus arteriosus (PDA) can have significant clinical consequences in preterm infants, depending on the degree of left-to-right shunting, its impact on cardiac performance, and associated perinatal risk factors that can mitigate or exacerbate the shunt. Although the best management strategy remains contentious, PDAs that have contraindications to, or have failed medical management have historically undergone surgical ligation. Recently smaller occluder devices and delivery systems have allowed for minimally invasive closure in the catheterization laboratory even in extremely premature infants. The present review summarizes the pathophysiologic manifestations, treatment options and management of hemodynamically significant PDA in preterm infants. Additionally, we review the available literature surrounding the respiratory support and outcomes of preterm infants following definitive PDA closure.
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Affiliation(s)
- Craig R Wheeler
- Department of Respiratory Care, Boston Children's Hospital, Boston, Massachusetts.
| | - Elizabeth R Vogel
- Division of Pediatric Cardiac Anesthesia, Department of Anesthesiology and Perioperative Medicine, Mayo Clinic, Rochester, Minnesota
| | - Michael A Cusano
- Department of Respiratory Care, Boston Children's Hospital, Boston, Massachusetts
| | - Kevin G Friedman
- Department of Cardiology, Boston Children's Hospital and Harvard Medical School, Boston, Massachusetts
| | - Ryan Callahan
- Department of Cardiology, Boston Children's Hospital and Harvard Medical School, Boston, Massachusetts
| | - Diego Porras
- Department of Cardiology, Boston Children's Hospital and Harvard Medical School, Boston, Massachusetts
| | - Juan C Ibla
- Division of Cardiac Anesthesia, Department of Anesthesiology, Perioperative and Pain Medicine, Boston Children's Hospital and Harvard Medical School, Boston, Massachusetts
| | - Philip T Levy
- Division of Newborn Medicine, Department of Pediatrics, Boston Children's Hospital and Harvard Medical School, Harvard University, Boston, Massachusetts
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Grunenwald Gronier C, Benbrik N, Romefort B, Prigent S, Hauet Q, Baruteau AE. Off-label use of Lifetech KONAR-MF™ ventricular septal defect occluder for large patent ductus arteriosus closure in <6 kg infants. INTERNATIONAL JOURNAL OF CARDIOLOGY CONGENITAL HEART DISEASE 2022. [DOI: 10.1016/j.ijcchd.2021.100316] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
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10
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Abstract
Patent ductus arteriosus (PDA) may be found in 0.1-0.2% of term infants, but the average incidence is at least five-fold higher in premature infants, correlating inversely with birth weight and gestational age. While not all patients with a PDA require treatment, the deleterious effects of persistent left-to-right shunting across the ductus can have important short- and long-term consequences. Medical and interventional approaches to PDA closure have evolved greatly in the past decade and add to the decision-making pathways. This article summarizes the pathophysiology of PDA and characterizes the medical, surgical and endovascular treatment approaches.
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11
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Tort M, Ceviz M, Sevil F, Becit N. Surgical Treatment for Patent Ductus Arteriosus: Our Experience of 12 Years. Cureus 2021; 13:e14731. [PMID: 34079678 PMCID: PMC8161702 DOI: 10.7759/cureus.14731] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
Introduction Patent ductus arteriosus (PDA) is a congenital heart disease that, if left untreated, can lead to pulmonary hypertension, congestive heart failure, and death. Here, we aimed to assess postoperative cardiac hemodynamic changes and surgical techniques, as well as early and late postoperative findings in surgically treated PDA patients. Materials and methods We retrospectively analyzed the data belonging to 126 patients whose PDA was surgically closed in our clinic from January 2001 to December 2012. With echocardiography being a standard in diagnosis and follow-up, angiography and computed tomography were also used in the presence of pulmonary hypertension and congenital heart disease, when needed. Postoperative data were compared between isolated PDA patients and those with congenital cardiac deformities. Results Evaluating the patients' pulmonary artery pressure (PAP), pulmonary hypertension was detected in 121 patients (96.0%). Preoperative PAP was significantly higher in PDA patients with congenital heart disease compared to the isolated PDA group (p<0.05). PAP decreased significantly in postoperative follow-up in both groups (p<0.05). However, this decrease was faster in the isolated PDA group than in patients with congenital heart disease and right-left shunt accompanying PDA (p<0.05). Regarding the correlation between ductus diameters and preoperative PAP, we found that as ductus diameter increased, PAP increased significantly (p<0.05). Conclusions In PDA patients, closing the ductus is necessary to prevent pulmonary and cardiac complications. Surgical closure remains one of the most effective methods for this, although there is little difference between surgical treatment methods in terms of mortality.
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Affiliation(s)
- Mehmet Tort
- Cardiovascular Surgery, Ataturk University School of Medicine, Erzurum, TUR
| | - Münacettin Ceviz
- Cardiovascular Surgery, Ataturk University School of Medicine, Erzurum, TUR
| | - Fehimcan Sevil
- Cardiovascular Surgery, Afyonkarahisar Health Sciences University, Afyonkarahisar, TUR
| | - Necip Becit
- Cardiovascular Surgery, Afyonkarahisar Health Sciences University, Afyonkarahisar, TUR
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12
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Godin R, Rodriguez JC, Kahn DJ. Oral Versus Intravenous Medications for Treatment of Patent Ductus Arteriosus in Preterm Neonates: A Cost-Saving Initiative. J Pediatr Pharmacol Ther 2021; 26:291-299. [PMID: 33833632 DOI: 10.5863/1551-6776-26.3.291] [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] [Received: 03/20/2020] [Accepted: 10/18/2020] [Indexed: 01/27/2023]
Abstract
OBJECTIVE The purpose of the study was to quantify cost savings after promoting oral pharmacotherapy for the treatment of hemodynamically significant patent ductus arteriosus (hsPDA). METHODS This was a retrospective before-and-after time series quality improvement study. Oral ibuprofen and acetaminophen use criteria were developed and recommended, rather than the more costly intravenous equivalents. There were 24-month medication use reports generated for both the pre-criteria (Era-1) and the post-criteria (Era-2) implementation phases to identify neonates prescribed hsPDA medications in order to assess cost differences. RESULTS Era-1 had 190 treatment courses in 110 neonates for a total medication cost of $171,260.70. Era-2 had 210 courses in 109 patients for a total medication cost of $47,461.49, yielding savings of $123,799.21 ($61,899.61 annually) after criteria implementation. The reduction in intravenous ibuprofen use in Era-2 accounted for all the savings. CONCLUSION Preferentially prescribing lower-cost oral medications to treat hsPDA led to significant cost savings.
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13
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Engan M, Engeset MS, Sandvik L, Gamlemshaug OCO, Engesæter IØ, Øymar K, Vollsæter M, Røksund OD, Hufthammer KO, Halvorsen T, Clemm HH. Left Vocal Cord Paralysis, Lung Function and Exercise Capacity in Young Adults Born Extremely Preterm With a History of Neonatal Patent Ductus Arteriosus Surgery-A National Cohort Study. Front Pediatr 2021; 9:780045. [PMID: 35047462 PMCID: PMC8761768 DOI: 10.3389/fped.2021.780045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Accepted: 11/29/2021] [Indexed: 11/17/2022] Open
Abstract
Background: Left vocal cord paralysis (LVCP) is a known complication of patent ductus arteriosus (PDA) surgery in extremely preterm (EP) born neonates; however, consequences of LVCP beyond the first year of life are insufficiently described. Both voice problems and breathing difficulties during physical activity could be expected with an impaired laryngeal inlet. More knowledge may improve the follow-up of EP-born subjects who underwent PDA surgery and prevent confusion between LVCP and other diagnoses. Objectives: Examine the prevalence of LVCP in a nationwide cohort of adults born EP with a history of PDA surgery, and compare symptoms, lung function, and exercise capacity between groups with and without LVCP, and vs. controls born EP and at term. Methods: Adults born EP (<28 weeks' gestation or birth weight <1,000 g) in Norway during 1999-2000 who underwent neonatal PDA surgery and controls born EP and at term were invited to complete questionnaires mapping voice-and respiratory symptoms, and to perform spirometry and maximal treadmill exercise testing. In the PDA-surgery group, exercise tests were performed with a laryngoscope positioned to evaluate laryngeal function. Results: Thirty out of 48 (63%) eligible PDA-surgery subjects were examined at mean (standard deviation) age 19.4 (0.8) years, sixteen (53%) had LVCP. LVCP was associated with self-reported voice symptoms and laryngeal obstruction during exercise, not with lung function or peak oxygen consumption (VO2peak). In the PDA-surgery group, forced expiratory volume in 1 second z-score (z-FEV1) was reduced compared to EP-born controls (n = 30) and term-born controls (n = 36); mean (95% confidence interval) z-FEV1 was -1.8 (-2.3, -1.2), -0.7 (-1.1, -0.3) and -0.3 (-0.5, -0.0), respectively. For VO2peak, corresponding figures were 37.5 (34.9, 40.2), 38.1 (35.1, 41.1), and 43.6 (41.0, 46.5) ml/kg/min, respectively. Conclusions: LVCP was common in EP-born young adults who had undergone neonatal PDA surgery. Within the PDA-surgery group, LVCP was associated with self-reported voice symptoms and laryngeal obstruction during exercise, however we did not find an association with lung function or exercise capacity. Overall, the PDA-surgery group had reduced lung function compared to EP-born and term-born controls, whereas exercise capacity was similarly reduced for both the PDA-surgery and EP-born control groups when compared to term-born controls.
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Affiliation(s)
- Mette Engan
- Department of Clinical Science, University of Bergen, Bergen, Norway.,Department of Pediatric and Adolescent Medicine, Haukeland University Hospital, Bergen, Norway
| | - Merete S Engeset
- Department of Clinical Science, University of Bergen, Bergen, Norway.,Faculty of Health and Social Sciences, Western Norway University of Applied Sciences, Bergen, Norway
| | - Lorentz Sandvik
- Department of Otolaryngology and Head and Neck Surgery, Haukeland University Hospital, Bergen, Norway
| | - Ole C O Gamlemshaug
- Department of Otolaryngology and Head and Neck Surgery, Haukeland University Hospital, Bergen, Norway
| | - Ingvild Ø Engesæter
- Department of Otolaryngology and Head and Neck Surgery, Haukeland University Hospital, Bergen, Norway
| | - Knut Øymar
- Department of Clinical Science, University of Bergen, Bergen, Norway.,Department of Pediatric and Adolescent Medicine, Stavanger University Hospital, Stavanger, Norway
| | - Maria Vollsæter
- Department of Clinical Science, University of Bergen, Bergen, Norway.,Department of Pediatric and Adolescent Medicine, Haukeland University Hospital, Bergen, Norway
| | - Ola D Røksund
- Department of Pediatric and Adolescent Medicine, Haukeland University Hospital, Bergen, Norway.,Faculty of Health and Social Sciences, Western Norway University of Applied Sciences, Bergen, Norway.,Department of Otolaryngology and Head and Neck Surgery, Haukeland University Hospital, Bergen, Norway
| | | | - Thomas Halvorsen
- Department of Clinical Science, University of Bergen, Bergen, Norway.,Department of Sports Medicine, Norwegian School of Sport Sciences, Oslo, Norway
| | - Hege H Clemm
- Department of Clinical Science, University of Bergen, Bergen, Norway.,Department of Pediatric and Adolescent Medicine, Haukeland University Hospital, Bergen, Norway
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14
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Hamrick SEG, Sallmon H, Rose AT, Porras D, Shelton EL, Reese J, Hansmann G. Patent Ductus Arteriosus of the Preterm Infant. Pediatrics 2020; 146:e20201209. [PMID: 33093140 PMCID: PMC7605084 DOI: 10.1542/peds.2020-1209] [Citation(s) in RCA: 118] [Impact Index Per Article: 29.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 06/30/2020] [Indexed: 02/07/2023] Open
Abstract
Postnatal ductal closure is stimulated by rising oxygen tension and withdrawal of vasodilatory mediators (prostaglandins, nitric oxide, adenosine) and by vasoconstrictors (endothelin-1, catecholamines, contractile prostanoids), ion channels, calcium flux, platelets, morphologic maturity, and a favorable genetic predisposition. A persistently patent ductus arteriosus (PDA) in preterm infants can have clinical consequences. Decreasing pulmonary vascular resistance, especially in extremely low gestational age newborns, increases left-to-right shunting through the ductus and increases pulmonary blood flow further, leading to interstitial pulmonary edema and volume load to the left heart. Potential consequences of left-to-right shunting via a hemodynamically significant patent ductus arteriosus (hsPDA) include increased risk for prolonged ventilation, bronchopulmonary dysplasia, necrotizing enterocolitis or focal intestinal perforation, intraventricular hemorrhage, and death. In the last decade, there has been a trend toward less aggressive treatment of PDA in preterm infants. However, there is a subgroup of infants who will likely benefit from intervention, be it pharmacologic, interventional, or surgical: (1) prophylactic intravenous indomethacin in highly selected extremely low gestational age newborns with PDA (<26 + 0/7 weeks' gestation, <750 g birth weight), (2) early targeted therapy of PDA in selected preterm infants at particular high risk for PDA-associated complications, and (3) PDA ligation, catheter intervention, or oral paracetamol may be considered as rescue options for hsPDA closure. The impact of catheter-based closure of hsPDA on clinical outcomes should be determined in future prospective studies. Finally, we provide a novel treatment algorithm for PDA in preterm infants that integrates the several treatment modalities in a staged approach.
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Affiliation(s)
- Shannon E G Hamrick
- Divisions of Neonatology and
- Cardiology, Department of Pediatrics, Emory University and Children's Healthcare of Atlanta, Atlanta, Georgia
| | - Hannes Sallmon
- Department of Pediatric Cardiology, Charité University Medical Center, Berlin, Germany
| | | | - Diego Porras
- Department of Cardiology, Boston Children's Hospital and Harvard Medical School, Harvard University, Boston, Massachusetts
| | - Elaine L Shelton
- Division of Neonatology, Vanderbilt University Medical Center, Nashville, Tennessee; and
| | - Jeff Reese
- Division of Neonatology, Vanderbilt University Medical Center, Nashville, Tennessee; and
| | - Georg Hansmann
- Department of Pediatric Cardiology and Critical Care, Hannover Medical School, Hannover, Germany
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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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McLoughlin RJ, Dacier BM, Hazeltine MD, Hirsh MP, Sullivan KP, Cleary MA, Aidlen JT. Intraventricular Hemorrhage and Patent Ductus Arteriosus Ligation Association with Infant Mortality. J Surg Res 2020; 252:192-199. [PMID: 32278974 DOI: 10.1016/j.jss.2020.03.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2019] [Revised: 02/28/2020] [Accepted: 03/10/2020] [Indexed: 11/17/2022]
Abstract
BACKGROUND Practice patterns for the management of patent ductus arteriosus (PDA) in premature infants are changing with advances in medical management. We sought to determine the increased mortality for premature infants who had a PDA ligation with a co-existing diagnosis of intraventricular hemorrhage (IVH). METHODS Premature neonates (<1 y old with known gestational week ≤36 wk) with a diagnosis of IVH were identified within the Kids' Inpatient Database (KID) for the years 2006, 2009, and 2012. Diagnoses and procedures were analyzed by ICD-9 codes and stratified by a diagnosis of PDA and procedure of ligation. Case weighting was used to make national estimations. Multivariable logistic regression was performed to adjust for confounders. RESULTS We identified 7567 hospitalizations for premature neonates undergoing PDA ligation. The population was predominately male (51.6%), non-Hispanic white (41.1%), were from the lowest income quartile (33.1%), had a gestational week of 25-26 wk (34.0%), and a birthweight between 500 and 749 g (37.3%). There was an increased mortality (10.7% versus 6.3%, P < 0.01) and an increased length of stay (88.2 d versus 74.4 d, P < 0.01) in those with any diagnosis of IVH compared with those without. Adjusted multivariable logistic regression demonstrated that high-grade IVH (III or IV) was associated with a significantly increased risk of mortality in those undergoing PDA ligation (aOR 2.59, P < 0.01). Specifically, grade III and IV were associated with an increased odds of in-hospital mortality (aOR 1.99 and 3.16, respectively, P < 0.01). CONCLUSIONS Attitudes regarding the need for surgical intervention for PDA have shifted in recent years. This study highlights that premature neonates with grade III or IV IVH are at significantly increased risk of mortality if undergoing PDA ligation during the same hospitalization. LEVEL OF EVIDENCE III.
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Affiliation(s)
- Robert J McLoughlin
- Department of Surgery, University of Massachusetts Medical School, Worcester, Massachusetts
| | - Brittany M Dacier
- University of Massachusetts Medical School, Worcester, Massachusetts
| | - Max D Hazeltine
- Department of Surgery, University of Massachusetts Medical School, Worcester, Massachusetts.
| | - Michael P Hirsh
- Division of Pediatric Surgery, Department of Surgery, University of Massachusetts Medical School, Worcester, Massachusetts
| | - Katherine P Sullivan
- Division of Neonatology, Department of Pediatrics, University of Massachusetts Medical School, Worcester, Massachusetts
| | - Muriel A Cleary
- Division of Pediatric Surgery, Department of Surgery, University of Massachusetts Medical School, Worcester, Massachusetts
| | - Jeremy T Aidlen
- Division of Pediatric Surgery, Department of Surgery, University of Massachusetts Medical School, Worcester, Massachusetts
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Abstract
Management of persistent patent ductus arteriosus (PDA) continues to be a challenging issue. The attitude toward PDA has shifted in the opposite direction during the last 20 years, from advocating an aggressive and early closure toward a call for watchful observation. While persistent PDA may cause challenges in the medical management of preterm neonates secondary to volume overload, pulmonary edema or hemorrhage, hypotension, and impaired tissue perfusion, its contribution toward long-term neonatal morbidities including bronchopulmonary dysplasia (BPD), ROP, NEC, and NDI has not been substantiated. By advocating conservative management, it is clear now that the majority of the PDA cases show spontaneous closure and do not require treatment. However, there has not been agreement regarding what constitutes a hemodynamically significant PDA and when, if any, it should be targeted for treatment. With increasing concern regarding possible associated complications with PDA ligation, a new trend for transcatheter approach to PDA closure is expanding. In this review, we summarize current understanding of the pathophysiology, diagnosis, and management of PDA in preterm infants, and we make some recommendations regarding evidence-based approach.
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Affiliation(s)
| | - Eyad Almidani
- Department of Pediatrics, King Faisal Specialist Hospital& Research Center, Riyadh, Saudi Arabia
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18
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Abstract
Management of persistent patent ductus arteriosus (PDA) continues to be a challenging issue. The attitude toward PDA has shifted in the opposite direction during the last 20 years, from advocating an aggressive and early closure toward a call for watchful observation. While persistent PDA may cause challenges in the medical management of preterm neonates secondary to volume overload, pulmonary edema or hemorrhage, hypotension, and impaired tissue perfusion, its contribution toward long-term neonatal morbidities including bronchopulmonary dysplasia (BPD), ROP, NEC, and NDI has not been substantiated. By advocating conservative management, it is clear now that the majority of the PDA cases show spontaneous closure and do not require treatment. However, there has not been agreement regarding what constitutes a hemodynamically significant PDA and when, if any, it should be targeted for treatment. With increasing concern regarding possible associated complications with PDA ligation, a new trend for transcatheter approach to PDA closure is expanding. In this review, we summarize current understanding of the pathophysiology, diagnosis, and management of PDA in preterm infants, and we make some recommendations regarding evidence-based approach.
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Affiliation(s)
| | - Eyad Almidani
- Department of Pediatrics, King Faisal Specialist Hospital& Research Center, Riyadh, Saudi Arabia
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Patent ductus arteriosus in preterm infants: is early transcatheter closure a paradigm shift? J Perinatol 2019; 39:1449-1461. [PMID: 31562396 DOI: 10.1038/s41372-019-0506-7] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/09/2019] [Revised: 08/05/2019] [Accepted: 08/12/2019] [Indexed: 12/13/2022]
Abstract
The optimal management approach of the patent ductus arteriosus (PDA) in premature infants remains uncertain owing the lack of evidence for long-term benefits and the limited analyses of the complications of medical and surgical interventions to date. In recent years, devices suitable to plug the PDA of premature infants (including extremely low birthweight, <1000 g) have become available and several trials have demonstrated successful and safe transcatheter PDA closure (TCPC) in this population. Whether TCPC represents a paradigm shift in PDA management that will result in improved short- and long-term outcomes, less bronchopulmonary dysplasia, improved neurodevelopment, or better long term renal function remains to be seen. Careful rigorous study of the potential benefits of TCPC in this highly vulnerable population in the context of well-designed adequately powered trials is needed prior to widespread adoption of this approach.
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Takeuchi K. PDA clipping by video-assisted thoracoscopic surgery. J Thorac Dis 2019; 11:S1835-S1836. [PMID: 31632762 DOI: 10.21037/jtd.2019.08.49] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Koh Takeuchi
- Department of Cardiovascular Surgery, Hanyu General Hospital, Saitama, Japan
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21
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Dani C, Mosca F, Cresi F, Lago P, Lista G, Laforgia N, Del Vecchio A, Corvaglia L, Paolillo P, Trevisanuto D, Capasso L, Fanos V, Maffei G, Boni L. Patent ductus arteriosus in preterm infants born at 23-24 weeks' gestation: Should we pay more attention? Early Hum Dev 2019; 135:16-22. [PMID: 31212222 DOI: 10.1016/j.earlhumdev.2019.06.002] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Revised: 05/30/2019] [Accepted: 06/04/2019] [Indexed: 11/19/2022]
Abstract
BACKGROUND Infants born at 23-24 weeks' gestation have the highest risk of developing a hemodynamically significant patent ductus arteriosus (hsPDA), that is refractory to pharmacological closure requiring surgical ligation. Thus, these patients might have the greatest benefits from hsPDA closure, although previous studies on PDA closure were not focused on this population. AIM To compare the occurrence of hsPDA, failure rate of the first course of ibuprofen in closing hsPDA, and need of surgical closure in infants born at 23+0-24+6 weeks' gestation to those in infants born at 25+0-28+6 weeks' gestation. STUDY DESIGN This is a retrospective multicenter study including infants born at 23+0-28+6 weeks of gestation admitted to the neonatal care units from January 2013 to December 2017. All infants underwent echocardiographical assessment for hsPDA diagnosis and eventually pharmacological treatment, and surgical closure. RESULTS We studied a total of 842 infants of which 562 (67%) developed a PDA. Among those with PDA, 511 (91%) received a pharmacological treatment for a hsPDA. We found that a hsPDA occurred in 70% (106/151) of infants born at 23-24 weeks and in 59% (405/691) of infants born at 25-28 weeks of gestation (P < 0.001). Failure of closure with the first-treatment cycle (69 vs. 40%; P < 0.001) and need of surgical closure (19 vs 10%) were more frequent (P < 0.011) in infants born at 23-24 than 25-28 gestational weeks. Paracetamol vs. ibuprofen treatment and gestational age of 23-24 versus 25-28 weeks increased closure failure, while less severe RDS and maternal clinical chorioamnionitis decreased it. CONCLUSIONS Among extremely preterm infants, infants born at 23-24 weeks of gestation have the highest risk of developing a hsPDA refractory to pharmacological treatment requiring surgical closure. Our findings support the need of individualized more careful strategies for hsPDA management in this special population.
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Affiliation(s)
- Carlo Dani
- Division of Neonatology, Careggi University Hospital of Florence, Florence, Italy; Department of Neurosciences, Psychology, Drug Research and Child Health, Careggi University Hospital of Florence, Italy.
| | - Fabio Mosca
- NICU Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy; Department of Clinical Sciences and Community Health, University of Milan, Milan, Italy
| | - Francesco Cresi
- Neonatal Intensive Care Unit, Department of Public Health and Pediatrics, University of Turin, Turin, Italy
| | - Paola Lago
- NICU, Ca' Foncello Hospital, Treviso, Italy
| | - Gianluca Lista
- Division of Neonatology, "V. Buzzi" Children's Hospital - ASST FBF/Sacco, Milan, Italy
| | - Nicola Laforgia
- Neonatal Intensive Care Unit, University Aldo Moro of Bari, Bari, Italy
| | - Antonello Del Vecchio
- Neonatal Intensive Care Unit, Department of Women's and Children's Health, "Di Venere" Hospital of Bari, Bari, Italy
| | - Luigi Corvaglia
- Neonatal Intensive Care Unit, Department of Medical and Surgical Sciences, University of Bologna, Bologna, Italy
| | - Piermichele Paolillo
- Department of Maternal and Child Health, Division of Neonatology and Neonatal Intensive Care, Casilino General Hospital, ASL RM B, Roma, Italy
| | - Daniele Trevisanuto
- Department of Woman's and Child's Health, Azienda Ospedaliera di Padova, University of Padua, Padua, Italy
| | - Letizia Capasso
- Division of Neonatology, Section of Pediatrics, Department of Translational Medical Sciences, Università Federico II of Naples, Naples, Italy
| | - Vassilios Fanos
- Neonatal Intensive Care Unit, Institute of Puericulture and Neonatal Section, Department of Surgery, University of Cagliari, Cagliari, Italy
| | - Gianfranco Maffei
- Neonatal Intensive Care Unit, University Hospital of Foggia, Foggia, Italy
| | - Luca Boni
- Clinical Trials Coordinating Center, Careggi University Hospital of Florence, Florence, Italy
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Rooney SR, Shelton EL, Aka I, Shaffer CM, Clyman RI, Dagle JM, Ryckman K, Lewis TR, Reese J, Van Driest SL, Kannankeril PJ. CYP2C9*2 is associated with indomethacin treatment failure for patent ductus arteriosus. Pharmacogenomics 2019; 20:939-946. [PMID: 31486736 PMCID: PMC6817966 DOI: 10.2217/pgs-2019-0079] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2019] [Accepted: 07/15/2019] [Indexed: 12/12/2022] Open
Abstract
Aims: To identify clinical andgenetic factors associated with indomethacin treatment failure in preterm neonates with patent ductus arteriosus (PDA). Patients & Methods: This is a multicenter cohort study of 144 preterm infants (22-32 weeks gestational age) at three centers who received at least one treatment course of indomethacin for PDA. Indomethacin failure was defined as requiring subsequent surgical intervention. Results: In multivariate analysis, gestational age (AOR 0.76, 95% CI 0.60-0.96), surfactant use (AOR 9.77, 95% CI 1.15-83.26), and CYP2C9*2 (AOR 3.74; 95% CI 1.34-10.44) were each associated with indomethacin failure. Conclusion: Age, surfactant use, and CYP2C9*2 influence indomethacin treatment outcome in preterm infants with PDA. This combination of clinical and genetic factors may facilitate targeted indomethacin use for PDA.
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Affiliation(s)
- Sydney R Rooney
- Vanderbilt University School of Medicine, UCSF, Nashville, TN 37232, USA
| | - Elaine L Shelton
- Department of Pediatrics, Vanderbilt University Medical Center, UCSF, Nashville, TN 37232, USA
| | - Ida Aka
- Department of Pediatrics, Vanderbilt University Medical Center, UCSF, Nashville, TN 37232, USA
| | - Christian M Shaffer
- Department of Medicine, Vanderbilt University Medical Center, UCSF, Nashville, TN 37232, USA
| | - Ronald I Clyman
- Department of Pediatrics & Cardiovascular Research Center, University of California San Francisco, San Francisco, CA 94143, USA
| | - John M Dagle
- Department of Pediatrics, University of Iowa, Iowa City, UMKC, IA 52242, USA
| | - Kelli Ryckman
- Department of Epidemiology, University of Iowa, Iowa City, UMKC, IA 52242, USA
| | - Tamorah R Lewis
- Department of Pediatrics, University of Missouri Kansas City School of Medicine, Kansas City, MO 64110, USA
| | - Jeff Reese
- Department of Pediatrics, Vanderbilt University Medical Center, UCSF, Nashville, TN 37232, USA
| | - Sara L Van Driest
- Department of Pediatrics, Vanderbilt University Medical Center, UCSF, Nashville, TN 37232, USA
- Department of Medicine, Vanderbilt University Medical Center, UCSF, Nashville, TN 37232, USA
| | - Prince J Kannankeril
- Department of Pediatrics, Vanderbilt University Medical Center, UCSF, Nashville, TN 37232, USA
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23
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Willis KA, Weems MF. Hemodynamically significant patent ductus arteriosus and the development of bronchopulmonary dysplasia. CONGENIT HEART DIS 2018; 14:27-32. [DOI: 10.1111/chd.12691] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/16/2018] [Accepted: 09/26/2018] [Indexed: 12/12/2022]
Affiliation(s)
- Kent A. Willis
- Division of Neonatology and Le Bonheur Children’s Hospital, Department of Pediatrics; University of Tennessee Health Science Center; Memphis Tennessee
| | - Mark F. Weems
- Division of Neonatology and Le Bonheur Children’s Hospital, Department of Pediatrics; University of Tennessee Health Science Center; Memphis Tennessee
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