Effects of positive airway pressure treatment on pulmonary artery pressure in patients with severe obstructive sleep apnea syndrome
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    Abstract:

    Objective:To investigate whether there is pulmonary hypertension(PH) in patients with severe obstructive sleep apnea syndrome(OSAS) and to evaluate the effect of two different positive airway pressure treatments,namely continuous positive airway pressure(CPAP) and Bi-level positive airway pressure(BiPAP) treatments,on pulmonary arterial pressure(PPA) in OSAS patients. Methods:Fourteen severe OSAS patients without cardiac or lung diseases were recruited and were divided into two groups,CPAP group(7 patients) and BiPAP group(7 patients) based on the method of positive airway pressure they received. Pulsed-wave doppler echocardiography was used for estimating their PPA, which was compared before and after 6-months’ treatment in all patients as well as between two groups. Results:Of all severe 14 OSAS patients, mild PH were detected in 5 patients(35.7%). After 6-months’ positive airway treatment,the PPA in 14 OSAS patients was significantly lower than that before treatments[(29.6 ± 7.2)mmHg vs(26.0 ± 5.0)mmHg,P < 0.05]. Comparison of PPA before and after different positive pressure treatment between two groups demonstrated that in CPAP group,although there seemed a tendency of decrease in PPA after CPAP treatment,no statistical significance was observed[(29.0 ± 6.6)mmHg vs(27.7 ± 5.9)mmHg,P > 0.05];however,in BiPAP group there was a significant decrease in PPA after BiPAP treatment,compared with that before treatment[(30.1 ± 8.3)mmHg vs(24.3 ± 3.6)mmHg,P < 0.05]. Conclusion:PH may occur in severe OSAS patients. The PPA in OSAS patients can be decreased by BiPAP treatment which is favorable for treatment and prevention of PH in OSAS patients.

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张东丽,雍永宏,王〓虹.气道正压通气治疗对重度阻塞性睡眠呼吸暂停患者肺动脉压影响的研究[J].南京医科大学学报(自然科学版英文版),2008,28(3):372-375.

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  • Received:October 22,2007
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