Heliox delivered by high flow nasal cannula improves oxygenation in infants with respiratory syncytial virus acute bronchiolitis

Jornal de pediatria
Wael Seliem, Amira M Sultan

Abstract

The objective of this study is to evaluate the hypothesis that use of heliox would result in improvement of gas exchange when used with high flow nasal cannula in infants with RSV acute bronchiolitis. All patients that met the inclusion criteria were randomized to either heliox (70:30) or air-oxygen mixture 30% via high flow nasal cannula at 8L/min for a continuous 24h. Measurements were taken at baseline, after 2h, and at the end of the 24h. This prospective study included 48 patients. After 2h of treatment with heliox, the oxygen saturation and PaO2 significantly improved when compared with the air-oxygen group, 98.3% vs. 92.9%, 62.0mmHg vs. 43.6mmHg (p=0.04 and 0.01), respectively. Furthermore, PaO2/FiO2 ratio was significantly higher in the heliox group when compared with the air-oxygen group, 206.7 vs. 145.3. Nevertheless, CO2 showed better elimination when heliox was used, without significance. MWCA score dropped significantly in the heliox group, 2.2 points vs. 4.0 points in air-oxygen (p=0.04), 2h after starting the therapy. Transient improvement of oxygenation in infants with RSV acute bronchiolitis during the initial phase of the therapy is associated with heliox when provided with HFNC, may provide a precious time fo...Continue Reading

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Citations

Nov 15, 2018·Einstein·Milena Siciliano NascimentoCristiane do Prado
Jul 7, 2020·International Journal of Molecular Medicine·Ioannis N MammasDemetrios A Spandidos
Nov 3, 2020·Journal of Pediatric Intensive Care·James H HertzogKimberly McMahon
Aug 6, 2021·Scientific Reports·Natalia Neumann-KlimasińskaTomasz Szczapa

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