Effects of acute oxygen supplementation on functional capacity and heart rate recovery in Eisenmenger syndrome

Effects of acute oxygen supplementation on functional capacity and heart rate recovery in Eisenmenger syndrome

Author Gonzaga, Laion R. A. Autor UNIFESP Google Scholar
Matos-Garcia, Bruna C. Autor UNIFESP Google Scholar
Rocco, Isadora S. Autor UNIFESP Google Scholar
Begot, Isis Autor UNIFESP Google Scholar
Bolzan, Douglas W. Autor UNIFESP Google Scholar
Tatani, Solange B. Autor UNIFESP Google Scholar
Santos, Vinicius B. Autor UNIFESP Google Scholar
Silva, Celia M. C. Autor UNIFESP Google Scholar
Carvalho, Antonio C. C. Google Scholar
Arena, Ross Google Scholar
Gomes, Walter J. Autor UNIFESP Google Scholar
Guizilini, Solange Autor UNIFESP Google Scholar
Abstract Background: Eisenmenger syndrome (ES) precipitates the extreme manifestation of pulmonary hypertension, which leads to severe functional limitation and poor quality of life. The propose of the current study was: 1) examined the acute effects of 40% oxygen supplementation during the 6-minute walk test (6MWT)

and 2) evaluate the relation between exercise capacity and clinical cardiac parameters in patients with ES. Methods: Thirty subjects were prospectively included

all were submitted to a 6MWT with compressed air and with 40% of oxygen. Heart rate recovery at the first minute (HRR1) and perceived effort Borg scale for dyspnea and lower limb fatigue were recorded in both tests scenarios. Results: The 6MWT distance was modestly, negatively associated with pulmonary vascular resistance (PVR) [r = 0.46, p = 0.02]. Patients improved 6MWT distance (p < 0.001) and exhibited a faster HRR1 (p < 0.001) with 40% supplemental oxygen compared to compressed air. With 40% supplemental oxygen, subjects revealed lower dyspnea and lower limb fatigue compared to 6MWT without oxygen supplementation (p < 0.001). The amount of change in the 6MWT distance from air to oxygen was moderate, positively associated with tricuspid annular plane systolic excursion (TAPSE) and right ventricular fractional area change (RVFAC) [r = 0.50, p = 0.03

r = 0.64, p < 0.001, respectively]. Conclusion: Acute 40% oxygen supplementation in patients with Eisenmenger syndrome led to an improvement in 6MWT distance, faster HRR1 and lower dyspnea and lower limb fatigue perception. Moreover, functional capacity was positively associated with right ventricular parameters. (C) 2017 Published by Elsevier Ireland Ltd.
Keywords Eisenmenger syndrome
Functional capacity
Oxygen supplementation
Pulmonary hypertension
Congenital heart disease
xmlui.dri2xhtml.METS-1.0.item-coverage Clare
Language English
Date 2017
Published in International Journal Of Cardiology. Clare, v. 231, p. 110-114, 2017.
ISSN 0167-5273 (Sherpa/Romeo, impact factor)
Publisher Elsevier Ireland Ltd
Extent 110-114
Origin http://dx.doi.org/10.1016/j.ijcard.2017.01.025
Access rights Closed access
Type Article
Web of Science ID WOS:000397905600020
URI https://repositorio.unifesp.br/handle/11600/54922

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