Isner J M, Horton J, Ronan J A
Am J Cardiol. 1979 May;43(5):1046-8. doi: 10.1016/0002-9149(79)90372-2.
Although echocardiographic manifestations of Swan-Ganz catheters have received increasing attention, auscultatory sequelae have not previously been described. In the patient described in this report, insertion of a Swan-Ganz catheter resulted in a loud mid systolic click; removal of the catheter eliminated the click. Simultaneous phonoechocardiograms suggest that the click resulted from crisp contact of the catheter against the ventricular septum. Catheter momentum was enhanced by wide excursion and systemic pressures in the right ventricle; paradoxical motion of the septum during systole may have accentuated the force of its contact with the catheter.
尽管 Swan-Ganz 导管的超声心动图表现已受到越来越多的关注，但听诊后遗症此前尚未见报道。在本报告所述的患者中，插入 Swan-Ganz 导管导致了响亮的收缩中期喀喇音；拔除导管后喀喇音消失。同步心音超声心动图提示，喀喇音是由于导管与室间隔的清脆接触所致。右心室的大幅度偏移和体循环压力增强了导管的动量；收缩期室间隔的矛盾运动可能加剧了其与导管接触的力度。
