Izquierdo Riezu M, Pastor Menchaca E, Galdeano Miranda J M, Cabrera Duro A, Modesto Caballero C, Peña Sundheim R
Cardiología pediátrica, Hospital de Cruces, Vizcaya.
An Esp Pediatr. 1991 Apr;34(4):283-7.
In order to evaluate the usefulness of Doppler echocardiography (continuous wave) in the assessment of obstructive cardiopathies, we studied the patients with pulmonary or aortic valvar stenosis examined from January 1988 to August 1989 in our Hospital. Doppler echocardiographic studies were performed on 35 patients, 19 with pulmonary valvar stenosis and 16 children with aortic valvar stenosis. Pulmonary flow was recorded from the left parasternal position (3-4 intercostal space) and aortic flow from the right parasternal position (3-4 intercostal space), apical and suprasternal notch window. We calculate the pressure gradient by the modified Bernoulli equation. The mean right Doppler gradient was 62 +/- 14 mmHg (ranged from 45 to 95) and the mean left Doppler gradient 64 +/- 29 mmHg (ranged from 30 to 150). The accuracy of Continuous Wave Doppler Echocardiography technique in our patients was verified by linear regression analysis of doppler-calculated and catheterization-measured gradients when the procedures were performed sumultaneously or within 48 hours. The statistical analysis included 19 children with pulmonary valvar stenosis and 16 with aortic valvar stenosis. This study confirms that Doppler echocardiography technique is an accurate and simple method to assess the cardiopathies with outflow obstruction. We believe that catheterization-measured gradients can be replaced by doppler-calculated ones, since there is an excellent correlation between them when they are performed simultaneously.
为了评估多普勒超声心动图（连续波）在梗阻性心脏病评估中的作用，我们研究了1988年1月至1989年8月在我院接受检查的肺动脉或主动脉瓣狭窄患者。对35例患者进行了多普勒超声心动图研究，其中19例为肺动脉瓣狭窄患者，16例为主动脉瓣狭窄患儿。从胸骨旁左位（第3 - 4肋间）记录肺血流，从胸骨旁右位（第3 - 4肋间）、心尖和胸骨上切迹窗口记录主动脉血流。我们用改良的伯努利方程计算压力阶差。右心多普勒平均阶差为62±14 mmHg（范围45至95），左心多普勒平均阶差为64±29 mmHg（范围30至150）。当同时进行或在48小时内进行操作时，通过对多普勒计算和心导管测量的阶差进行线性回归分析，验证了连续波多普勒超声心动图技术在我们患者中的准确性。统计分析包括19例肺动脉瓣狭窄患儿和16例主动脉瓣狭窄患儿。本研究证实，多普勒超声心动图技术是评估伴有流出道梗阻心脏病的一种准确且简单的方法。我们认为，心导管测量的阶差可以被多普勒计算的阶差所取代，因为当它们同时进行时，两者之间存在极好的相关性。
