重度慢性阻塞性支气管炎患者静息和运动时的低频呼吸
Low frequency breathing at rest and during exercise in severe chronic obstructive bronchitis.
作者信息
Sergysels R, Willeput R, Lenders D, Vachaudez J P, Schandevyl W, Hennebert A
出版信息
Thorax. 1979 Aug;34(4):536-9. doi: 10.1136/thx.34.4.536.
The effect of low frequency breathing compared with spontaneous breathing was examined at rest and during exercise (40 watts) in 12 patients suffering from severe chronic obstructive bronchitis. At rest low frequency breathing improved significantly the alveolar ventilation and the tensions of oxygen and carbon dioxide in the arterial blood. There was no significant change in ventilation minute volume. During exercise low frequency breathing significantly decreased ventilation minute volume, and there was no significant improvement in gas exchange. The decrease in ventilation during low frequency breathing at 40 watts compared with spontaneous breathing at the same lung volume was due to expiratory flow limitation. The findings suggest that this technique may impair exercise tolerance in patients with severe chronic obstructive bronchitis.
在12例重度慢性阻塞性支气管炎患者中，研究了低频呼吸与自主呼吸相比在静息和运动（40瓦）时的效果。静息时，低频呼吸显著改善了肺泡通气以及动脉血中氧气和二氧化碳的张力。每分通气量无显著变化。运动时，低频呼吸显著降低了每分通气量，气体交换也无显著改善。在相同肺容量下，40瓦运动时低频呼吸与自主呼吸相比通气量降低是由于呼气气流受限。这些发现表明，该技术可能会损害重度慢性阻塞性支气管炎患者的运动耐力。
Zotero 插件