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采用右心漂浮导管法测定了146例慢性阻塞性肺病(COPD)患者负荷试验前、后的右心收缩时间间期(RSTIs),分析其与肺血流动力学及右心功能的关系。结果:右心室后负荷指标肺动脉平均压(PAPm)与右室射血前期、右室射血时间和二者之比等项与RSTIs指标均有极显著相关性(P均<0.01),而右心功能指标与RSTIs指标无显著相关。提示RSTIs是反映COPD患者肺动脉压的良好指标,但用于观察右心功能的改变意义较小。
The right ventricular systolic time (RSTIs) of 146 patients with chronic obstructive pulmonary disease (COPD) before and after stress test were measured by right ventricular floating catheterization and their relationship with pulmonary hemodynamics and right heart function was analyzed. Results: The indexes of right ventricular afterload, pulmonary arterial pressure (PAPm), right ventricular ejection time, right ventricular ejection time and the ratio of them all had significant correlation with RSTIs (P <0.01), while right Cardiac function index and RSTIs index no significant correlation. It is suggested that RSTIs is a good indicator of pulmonary arterial pressure in patients with COPD. However, the change of right ventricular function is less significant.