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应用力学的理论和方法,对右心室心肌收缩和舒张功能的有关指标进行探讨,指标包括右心室±dp/dt、±Vmax、±VCE10、T值。分析52例慢性阻塞性肺疾病(COPD)和肺心病患者血流动力学和心肌力学变化。反映心肌舒张性能的指标Vmax、VCE10两组间有显著差异(P<0.01或P<0.05)。Vmax是一个既能定量反映心肌收缩力,而又不受前后负荷影响的心肌力学指标。其余指标除—Vmax外,±dt/dt、—VCE10、T值均受心室前后负荷的影响。
The theories and methods of mechanics were used to investigate the systolic and diastolic function of right ventricular myocardium. The indexes included ± dp / dt, ± Vmax, ± VCE10 and T values in the right ventricle. Analysis of 52 patients with chronic obstructive pulmonary disease (COPD) and pulmonary heart disease hemodynamic and myocardial mechanical changes. Vmax and VCE10, a marker of myocardial relaxation, were significantly different between the two groups (P <0.01 or P <0.05). Vmax is a myocardial mechanics that quantitatively reflects myocardial contractility without being affected by anterior-posterior load. Other indicators in addition to-Vmax, ± dt / dt, -VCE10, T values were affected by ventricular anterior and posterior load.