多普勒超声心动图定量诊断肺动脉瓣狭窄

QUANTITATIVE DIAGNOSIS OF PULMONARY STENOSIS WITH DOPPLER ECHOCARDIOGRAPHY

本文对35例肺动脉瓣狭窄(PS)的患者,采用多普勒超声(DE)技术测量了肺动脉血流最大流速(Vp)和最大瞬时压差(△Pp),并与心导管测量的峰间压差(△Pp-p)作对比。结果表明:Vp和△Pp-p之间存在高度相关(r=0.97,S-■=±0.33m/s),△Pp和△Pp-p均数之间无显著性差异(P>0.05),两种测值之间存在高度相关关系(r=0.98,S■=±1.1 kPa(8.3mmHg)]。结论认为,DE是定量诊断PS的准确可靠的无创性方法。

Maximal flow velocities (Vp) and maximal pressure gradients (△Pp) across pulmonary valve were measured with Doppler echocardio-graphy (DE) in 35 patients with simple pulmonary stenosis (PS) or complex PS. Vp and △Pp were compared with peak-to-peak pressure gradients (△Pp-p) measured with cardiac catheterization. The results showed that there were significant correlation between Vp and △Pp-p (r=0.97, SX=±0.33m/s), △Pp and △Pp-p (r=0.98, SX=±1.1kPa (8.3mmHg), while there was no significant difference (P>0.05) between △Pp and △Pp-p. It is concluded that DE is an accurate and reliable noninvasive method for quantitative diagnosis of PS.