Parro A, Helmcke F, Mahan E F, Nanda N C, Kandath D, Dean L S
Department of Medicine, University of Alabama, Birmingham 35233-1924.
Am J Cardiol. 1991 Jun 1;67(15):1261-7. doi: 10.1016/0002-9149(91)90938-h.
The limitations of 2-dimensional and pulsed Doppler echocardiography in patients undergoing mitral valvuloplasty are well known. This study was undertaken to assess the value of color Doppler flow imaging in 36 symptomatic mitral stenosis patients who subsequently underwent successful balloon mitral valvuloplasty by comparing the results to those obtained at cardiac catheterization. Color Doppler-guided conventional Doppler assessment agreed well with cardiac catheterization results in classifying mitral stenosis as mild, moderately severe and severe, both before and after valvuloplasty. Color Doppler was also useful in identifying patients who had moderate to severe mitral regurgitation before and after valvuloplasty. Color Doppler flow mapping was more sensitive than oximetry in the detection of iatrogenic atrial septal defects, which were noted in 25 patients. The defects of those patients with smaller defects by color Doppler (diameter less than 0.7 cm) or echocardiographic shunt volume less than 0.7 liters/min tended to close, usually within 6 months, as opposed to those with larger defects or higher shunt volumes, which tended to persist. Echocardiographic shunt volumes revealed a fair correlation with oximetric results.
二维和脉冲多普勒超声心动图在二尖瓣成形术患者中的局限性是众所周知的。本研究旨在通过将结果与心导管检查结果进行比较，评估彩色多普勒血流成像在36例有症状的二尖瓣狭窄患者中的价值，这些患者随后成功接受了球囊二尖瓣成形术。在二尖瓣成形术前和术后，彩色多普勒引导的传统多普勒评估在将二尖瓣狭窄分为轻度、中度严重和重度方面与心导管检查结果高度一致。彩色多普勒在识别二尖瓣成形术前和术后有中度至重度二尖瓣反流的患者方面也很有用。彩色多普勒血流图在检测医源性房间隔缺损方面比血氧测定更敏感，25例患者中发现了医源性房间隔缺损。彩色多普勒显示缺损较小（直径小于0.7 cm）或超声心动图分流容积小于0.7升/分钟的患者的缺损往往会闭合，通常在6个月内，而缺损较大或分流容积较高的患者的缺损往往会持续存在。超声心动图分流容积与血氧测定结果有较好的相关性。
