Garcia E J, Riggs T, Hirschfeld S, Liebman J
Am J Cardiol. 1979 Sep;44(3):487-92. doi: 10.1016/0002-9149(79)90401-6.
Thirty-one echocardiograms of 21 patients who had pumonary arterial banding were analyzed to assess the aequacy of surgery. In 5 patients the echocardiograms were obtained before and after banding and in 16 patients only after surgery. Right and left ventricular systolic time intervals were measured echographically. The ratios of the right ventricular preejection period to right ventricular ejection time (RPEP/RVET) were correlated with both diastolic (r = 0.94) and systolic (r = 0.86) pulmonary arterial pressures distal to the band. The analysis of right ventriclar systolic time intervals, especially the RPEP/RVET ratio, clearly differentiated patients with an adequate band (distal pulmonary arterial diastolic pressure less than 15 mm Hg) from patients with an inadequate band (distal pulmonary arterial diastolic pressure equal to or greater than 30 mm Hg). The results indicate that echocardiography is a useful noninvasive tool in evaluating the adequacy of the pulmonary arterial band and facilitates the follow-up of patients after banding.
分析了21例接受肺动脉环扎术患者的31份超声心动图，以评估手术的充分性。其中5例患者在环扎术前和术后均进行了超声心动图检查，16例患者仅在术后进行了检查。通过超声心动图测量右心室和左心室的收缩时间间期。右心室射血前期与右心室射血时间的比值（RPEP/RVET）与环扎部位远端的舒张期（r = 0.94）和收缩期（r = 0.86）肺动脉压相关。对右心室收缩时间间期的分析，尤其是RPEP/RVET比值，能明确区分环扎充分（远端肺动脉舒张压小于15 mmHg）的患者和环扎不充分（远端肺动脉舒张压等于或大于30 mmHg）的患者。结果表明，超声心动图是评估肺动脉环扎充分性的一种有用的非侵入性工具，有助于环扎术后患者的随访。
