Melissa Liebowitz1, Jane Koo1, Andrea Wickremasinghe2, Isabel Elaine Allen3, Ronald I Clyman4. 1. Department of Pediatrics, University of California San Francisco, San Francisco, CA. 2. Department of Pediatrics, Kaiser Permanente Santa Clara Medical Center, Santa Clara, CA. 3. Department of Epidemiology & Biostatistics, University of California San Francisco, San Francisco, CA. 4. Department of Pediatrics, University of California San Francisco, San Francisco, CA; Cardiovascular Research Institute, University of California San Francisco, San Francisco, CA. Electronic address: clymanr@peds.ucsf.edu.
Abstract
OBJECTIVE: To determine whether a moderate-to-large patent ductus arteriosus (PDA) is responsible for vasopressor-dependent hypotension, occurring at the end of the first postnatal week. STUDY DESIGN: We performed a retrospective, double cohort controlled study of infants delivered at ≤27+6 weeks' gestation (n = 313). From January 2004 through April 2011, all infants were treated with prophylactic indomethacin ([PINDO] epoch). From May 2011 through December 2015, no infant was treated with indomethacin until at least 8 postnatal days (conservative epoch). Echocardiograms were performed on postnatal days 6 or 7. Hypotension was managed by a predefined protocol. The primary outcome was the incidence of dopamine-dependent hypotension, defined as having received at least 6 µg/kg/min dopamine for at least 24 hours during postnatal days 4-7. RESULTS: As expected, the incidence of moderate-to-large PDA at the end of the first week differed significantly between epochs (PINDO = 8%; conservative = 64%). In multivariate analyses, infants in the PINDO epoch had a significantly lower incidence of vasopressor-dependent hypotension (11%) than infants in the conservative epoch (21%; OR = 0.40, 95% CI 0.20-0.82). Infants in the PINDO epoch also required less mean airway pressure, had a lower respiratory severity score, and lower mode of ventilation score than infants in the conservative epoch during postnatal days 4-7. The effects of PINDO on both the incidence of vasopressor-dependent hypotension and the need for respiratory support were no longer significant when analyses were adjusted for "presence or absence of a moderate-to-large PDA." CONCLUSION: PINDO decreases vasopressor-dependent hypotension and the need for respiratory support at the end of the first postnatal week. These effects are mediated by closure of the PDA.
OBJECTIVE: To determine whether a moderate-to-large patent ductus arteriosus (PDA) is responsible for vasopressor-dependent hypotension, occurring at the end of the first postnatal week. STUDY DESIGN: We performed a retrospective, double cohort controlled study of infants delivered at ≤27+6 weeks' gestation (n = 313). From January 2004 through April 2011, all infants were treated with prophylactic indomethacin ([PINDO] epoch). From May 2011 through December 2015, no infant was treated with indomethacin until at least 8 postnatal days (conservative epoch). Echocardiograms were performed on postnatal days 6 or 7. Hypotension was managed by a predefined protocol. The primary outcome was the incidence of dopamine-dependent hypotension, defined as having received at least 6 µg/kg/min dopamine for at least 24 hours during postnatal days 4-7. RESULTS: As expected, the incidence of moderate-to-large PDA at the end of the first week differed significantly between epochs (PINDO = 8%; conservative = 64%). In multivariate analyses, infants in the PINDO epoch had a significantly lower incidence of vasopressor-dependent hypotension (11%) than infants in the conservative epoch (21%; OR = 0.40, 95% CI 0.20-0.82). Infants in the PINDO epoch also required less mean airway pressure, had a lower respiratory severity score, and lower mode of ventilation score than infants in the conservative epoch during postnatal days 4-7. The effects of PINDO on both the incidence of vasopressor-dependent hypotension and the need for respiratory support were no longer significant when analyses were adjusted for "presence or absence of a moderate-to-large PDA." CONCLUSION:PINDO decreases vasopressor-dependent hypotension and the need for respiratory support at the end of the first postnatal week. These effects are mediated by closure of the PDA.
Authors: Roberta L Keller; Theresa A Tacy; Scott Fields; John P Ofenstein; Jacob V Aranda; Ronald I Clyman Journal: Pediatr Res Date: 2005-12 Impact factor: 3.756
Authors: S E Martens; M Rijken; G M S J Stoelhorst; P H T van Zwieten; A H Zwinderman; J M Wit; M Hadders-Algra; S Veen Journal: Early Hum Dev Date: 2003-12 Impact factor: 2.079
Authors: Ronald I Clyman; Melissa Liebowitz; Joseph Kaempf; Omer Erdeve; Ali Bulbul; Stellan Håkansson; Johanna Lindqvist; Aijaz Farooqi; Anup Katheria; Jason Sauberan; Jaideep Singh; Kelly Nelson; Andrea Wickremasinghe; Lawrence Dong; Denise C Hassinger; Susan W Aucott; Madoka Hayashi; Anne Marie Heuchan; William A Carey; Matthew Derrick; Erika Fernandez; Meera Sankar; Tina Leone; Jorge Perez; Arturo Serize Journal: J Pediatr Date: 2018-10-16 Impact factor: 4.406
Authors: Ronald I Clyman; Joseph Kaempf; Melissa Liebowitz; Omer Erdeve; Ali Bulbul; Stellan Håkansson; Johanna Lindqvist; Aijaz Farooqi; Anup Katheria; Jason Sauberan; Jaideep Singh; Kelly Nelson; Andrea Wickremasinghe; Lawrence Dong; Denise C Hassinger; Susan W Aucott; Madoka Hayashi; Anne Marie Heuchan; William A Carey; Matthew Derrick; Erika Fernandez; Meera Sankar; Tina Leone; Jorge Perez; Arturo Serize Journal: J Pediatr Date: 2020-10-28 Impact factor: 4.406
Authors: Jeff Reese; Nathalie L Maitre; Maria Gillam-Krakauer; James C Slaughter; Robert B Cotton; Blaine E Robinson Journal: J Perinatol Date: 2020-09-18 Impact factor: 2.521