Waldo A L, MacLean W A, Karp R B, Kouchoukos N T, James T N
Circulation. 1977 Nov;56(5):737-45. doi: 10.1161/01.cir.56.5.737.
To examine the question of why the pacing rate and duration of atrial pacing are crucial factors in the successful interruption of atrial flutter, studies were performed on 30 patients in the period following open heart surgery. In each patient the diagnosis of atrial flutter was made using a pair of wire electrodes placed on the right atrial epicardium at the time of operation and brought out through the anterior chest wall. The same electrodes were used for atrial pacing. Pacing faster than the spontaneous rate of the atrial flutter which failed to interrupt the atrial flutter was associated with transient entrainment of the atrial flutter up to the atrial pacing rate. Atrial flutter was interrupted successfully when the atria were paced at a rate which was too fast for the atrial flutter to follow. This was heralded by the conversion of previously negative flutter waves to positive atrial complexes in ECG lead II. When pacing the atria at a constant rate, 2-22 seconds with a mean of 10 seconds were required to interrupt the atrial flutter.
为研究心房起搏的频率和持续时间为何是成功终止心房扑动的关键因素，我们对30例心脏直视手术后的患者进行了研究。在每位患者身上，心房扑动的诊断是通过手术时放置在右心房心外膜上并从前胸壁引出的一对线状电极进行的。同样的电极用于心房起搏。起搏频率高于未能终止心房扑动的心房扑动自发频率时，会导致心房扑动暂时被拖带至心房起搏频率。当以心房扑动无法跟随的过快频率对心房进行起搏时，心房扑动成功终止。这在心电图II导联中表现为先前的负向扑动波转变为正向心房复合波。以恒定频率对心房进行起搏时，终止心房扑动需要2 - 22秒，平均为10秒。
