Pneumonologia i alergologia polska
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Pneumonol Alergol Pol
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Pneumonol Alergol Pol · Jan 1996
Randomized Controlled Trial Clinical Trial[Effect of CPAP and BiPAP assisted breathing on pulmonary hemodynamics in patients with obstructive sleep apnea].
CPAP breathing increases alveolar and intrathoracic pressures. We aimed to investigate the effects of CPAP and BiPAP breathing on pulmonary haemodynamics in patients with OSA. Ten male patients with OSA (AHI = 48 +/- 22) were studied. ⋯ BiPAP breathing had no effect on intravascular and transmural pressures, CO and PVR. We conclude that CPAP breathing increase pulmonary intravascular but not transmural, true, pressure. BiPAP breathing does not change pulmonary haemodynamics what may be of importance as pulmonary circulation is concerned.