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心肺运动试验对评估肺动脉高压患者西地那非药物效果的作用

2016-10-27唐毅柳志红安辰鸿马秀平熊长明倪新海罗勤赵智慧赵青张洪亮王勇黄智伟金旗

中国循环杂志 2016年9期
关键词:心功能

唐毅,柳志红,安辰鸿,马秀平,熊长明,倪新海,罗勤,赵智慧,赵青,张洪亮,王勇,黄智伟,金旗

心肺运动试验对评估肺动脉高压患者西地那非药物效果的作用

唐毅,柳志红,安辰鸿,马秀平,熊长明,倪新海,罗勤,赵智慧,赵青,张洪亮,王勇,黄智伟,金旗

目的:探讨心肺运动试验对评估肺动脉高压患者西地那非药物效果的作用。

方法:入选2012-01至2014-01阜外医院新诊断的仅接受西地那非治疗的动脉性肺动脉高压患者25例,于基线,治疗后6~12个月、13~18个月评估患者心肺运动试验、心脏超声、心功能、6 min步行距离和N末端B 型脑钠肽原(NT-proBNP)的变化。

结果:与正常对照组相比, 动脉性肺动脉高压患者用氧能力( 峰值氧耗量, 峰值氧脉搏)以及通气效率(呼气末二氧化碳分压,分钟通气量与二氧化碳排出量比值) 明显下降(P均<0.05)。西地那非治疗(8 ±2)个月后,用氧能力以及通气效率明显改善,同时心功能、6 min步行距 离和NT-proBNP也出现改善(P均<0.05)。继续西地那非治疗(16 ±2)个月时,6 min步行距离变化不明显(P=0.26),但峰值氧耗量、峰值氧脉搏较(8 ±2)个月时下降(P=0.04,0.06),通气效率减低(表现为呼气末二氧化碳分压下降、分钟通气量与二氧化碳排出量比值升高,P=0.04和 0.04)以及NT-proBNP开始出现增加(P=0.05)。

结论: 心肺运动试验能有效评估肺动脉高压患者西地那非治疗疗效并指导用药。

高血压,肺性 ;西地那非;心肺运动试验

Abstract

Objective: To evaluate cardiopulmonary exercise testing (CPET) on sildenafil effect for treating the patients with pulmonary arterial hypertension (PAH).

Methods: A total of 25 PAH patients received sildenafil treatment in our hospital from 2012-01 to 2014-01 were enrolled as PAH group, in addition, there were a Control group including 24 healthy subjects. The CPET, echocardiography, NYHA function class, 6-mimute walking distance (6MWD) and plasma levels of NT-proBNP at the baseline, (6-12) months and (13-18) months after sildenafil treatment were assessed and compared between 2 groups.

Results: Compared with Control group, PAH group showed decreased aerobic capacity (peakV̇O2, Peak O2pulse) and ventilation efficiency (PETCO2@AT, V̇E/V̇CO2@AT), all P<0.05. At (8±2) months after sildenafil treatment, aerobic capacity and ventilation efficiency was improved, meanwhile, NYHA function class, 6MWD and plasma levels of NT-proBNP were improved, all P<0.05. At (16±2) months after sildenafil treatment, 6MWD was similar, P=0.26, while peak V̇O2and peak O2pulse were decreased than they were at (8±2) months after sildenafil treatment, P=0.04 and 0.06; the ventilation efficiency was elevated (as presented by increased V̇E/V̇CO2@AT and decreased PETCO2@AT, P=0.04 and P=0.04); plasma level of NT-proBNP was increased, P=0.05.

Conclusion: CPET can effectively evaluate sildenafil effect for treating PAH patients and therefore and guide the drugs therapy.

(Chinese Circulation Journal, 2016,31: 881.)

肺动脉高压是一恶性、进展性疾病,主要表现为肺血管内皮细胞功能紊乱,纤维母细胞和平滑肌细胞进行性增殖、重构,从而导致肺血管阻力进行性增加,右心功能逐渐衰竭,最终导致患者死亡[1]。……

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