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6 cmH 2 O continuous positive airway pressure versus conventional oxygen therapy in severe viral bronchiolitis: A randomized trial
Author(s) -
Milési Christophe,
Matecki Stefan,
Jaber Samir,
Mura Thibaut,
Jacquot Aurélien,
Pidoux Odile,
Chautemps Nathalie,
Novais Aline Rideau Batista,
Combes Clémentine,
Picaud JeanCharles,
Cambonie Gilles
Publication year - 2013
Publication title -
pediatric pulmonology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.866
H-Index - 106
eISSN - 1099-0496
pISSN - 8755-6863
DOI - 10.1002/ppul.22533
Subject(s) - medicine , bronchiolitis , continuous positive airway pressure , respiratory distress , anesthesia , work of breathing , randomized controlled trial , oxygen therapy , positive airway pressure , pressure support ventilation , asthma , respiratory system , mechanical ventilation , obstructive sleep apnea
Objective To compare the effects of nasal continuous positive airway pressure (nCPAP) and conventional oxygen therapy on the clinical signs of respiratory distress and the respiratory muscle workload in acute viral bronchiolitis. Design Prospective, randomized, monocentric study carried out in the pediatric intensive care unit (PICU) of a university hospital. Patients Infants <6 months old, admitted to the PICU with severe respiratory syncytial virus bronchiolitis. Intervention The patients were randomized into two groups for 6 hr. The nCPAP group (n = 10) received 6 cmH 2 O pressure support delivered by a jet flow generator and the control group (n = 9) received an air/oxygen mixture from a heated humidifier. Respiratory distress was assessed by the modified Wood's clinical asthma score (m‐WCAS), and inspiratory muscle work was evaluated by calculating the pressure–time product per breath (PTP insp /breath) and per minute (PTP insp /min) from the esophageal pressure (Pes) recordings. Measurements and Main Results Compared with control condition, nCPAP decreased m‐WCAS [−2.4 (1.05) vs. −0.5 (1.3), P = 0.03], PTPes insp /breath [−9.7 (5.7) vs. −1.4 (8.2), P = 0.04], PTPes insp /min [−666 (402) vs. −116 (352), P = 0.015], and FiO 2 [−7 (10) vs. +5 (15), P = 0.05]. Significant worsening of m‐WCAS was only observed in the control group (4/9 vs. 0/10, P = 0.03). Conclusions nCPAP rapidly decreased inspiratory work in young infants with acute bronchiolitis. Improvement in the respiratory distress score at 6 hr was proportional to the initial clinical severity, suggesting the importance of rapid nCPAP initiation in the more severe forms of the disease. Pediatr Pulmonol. 2013; 48:45–51. © 2012 Wiley Periodicals, Inc.