Mori Shumpei, Tada Norio, Sakurai Mie, Suzuki Kenji, Takizawa Kaname, Ootomo Tatsushi, Mitsuoka Mikio, Ito Yuuko, Inoue Naoto, Meguro Taiichiro
Division of Cardiology, Cardiovascular Center, Sendai Kousei Hospital, Sendai, Miyagi, Japan.
J Clin Ultrasound. 2012 May;40(4):247-51. doi: 10.1002/jcu.21905. Epub 2012 Mar 21.
Although regular supraventricular tachycardia is traditionally classified on the basis of P-wave morphology, diagnostic accuracy is limited to information obtained from surface electrocardiography. Intracardiac electrophysiology is a conclusive although invasive diagnostic method. We report a case of regular supraventricular tachycardia with a heart rate of 162 bpm. M-mode echocardiography of the interatrial septum clarified both the atrial rate and the ventricular response ratio. Tissue Doppler M-mode imaging demonstrated the delay between the posterior wall motion of the left and right atrium. Although it deserves further study, transthoracic echocardiography may provide useful information in addition to electrocardiography.
虽然传统上根据P波形态对规则性室上性心动过速进行分类，但诊断准确性仅限于从体表心电图获得的信息。心内电生理检查虽然是侵入性的，但却是一种确定性的诊断方法。我们报告一例心率为162次/分钟的规则性室上性心动过速病例。房间隔的M型超声心动图明确了心房率和心室反应率。组织多普勒M型成像显示了左、右心房后壁运动之间的延迟。经胸超声心动图除了心电图外可能还能提供有用信息，尽管这值得进一步研究。
