摘要
以诊断性试验的设计方案,对26例行右心导管术的患者,用脉冲多普勒超声心功图:①对肺动脉压进行定性、定量检测;②比较取样容积置于右室流出道及主肺动脉的测值有无差别。结果:肺动脉尖三角形血流频谱伴反向血流是肺动脉高压的特征;加速时间<100ms,加速时间/右室射血期<0.30,右室射血前期/加速时间>1.1 提示肺动脉高压存在,用加速时间<100ms检测肺动脉高压的特异性为100％。敏感性为92.3％,准确性为96.2％;将取样容积置于右室流出道及主肺动脉所测右室收缩时间间期值无统计学上差别。
Twenty-six patients under-going right cardiac catheterization were ex-amined by pulsed doppler echocardiography(PDE), spectrum analysis of the shape offlow velocity curve of the pulmonary arteriaduring systole was made. Pulmonary arterialpressure(PAP)was qualitatively and quali-tatively evaluated by right ventricularsystolic time interval (RSTI) derived frompulmonary doppler blood flow velocitypattern. The correlation between PAP andthe values of RSTI was evaluated; multiplestepwise regression analysis was performed.The pulmonary flow pattern and the valuesof RSTI measured from right ventricularoutflow tract (RVOT) and main pulmonaryartery (MPA)were compared. The results showed that: 1. Qualitativeevaluation of PAP: ①the triangular config-uration of the pulmonary flow patternwas the feature of the pulmonary ejectionflow in pulmonary hypertension (PH).②AT<100ms AT/ET<0.30 and PEP/AT>1.1 indicated PH (PAMP≥2. 7kPa, ATM<100ms. sensitivity 92. 3%, specificity 100%).2.Quantitive evalution of PAP: ①simpleregression analysis: AT, AT/PEP especiallyAT showed a good inverse correlation withPAP, Which was improved when a logari-thmic function was applied, but not im-proved by the square root of heart rate. Theliner regressiom equation and the correla-tion coefficient were:log PASP= -6. 3617AT+2. 2825(r= -0. 7925,P<0. 001); log PADP=-0. 4569AT+74. 182 (r= -0. 8513, P<0. 001);log PAMP= -0. 0073AT+2. 198 (r= -0. 8635,P<0. 001). ②multiple stepwise regressionanalysis:the stepwise analysis of six pa-rameters (PEP, ET, AT, AT/ET, AT/PEP,(R-R)^(1/2) showed that AT, PEP were thebest paramaters correlated with PAP. Theregression equations and the correlationcoefficient were: PASP=88. 3265+0. 3236PEP-0. 6658AT(R=0. 76004 P<0. 05); PADP=49. 912+0. 2184 PEP-0. 4432AT(R=0. 79747,P<0. 05); PAMP=86. 9633-0. 4964AT (R=0. 76745, P<0. 05). 3. There were no signifi-cant differences between the pulmonarysystolie flow pattern and RSTI parametersdetermined at the MRA and that deter-mined at RVOT.
出处
《华西医科大学学报》
CSCD
1993年第3期324-327,共4页
Journal of West China University of Medical Sciences
关键词
超声心动图
肺动脉高压
Echocardiography
Pulmonary hypertension
