Karaca M, Demirbas M I, Biceroglu S, Cevik A, Cetin Y, Arpaz M, Yilmaz H
Department of Cardiology, Atakalp Heart Hospital, Izmir, Turkey.
Cardiovasc J Afr. 2012 Feb;23(1):34-6. doi: 10.5830/CVJA-2011-010.
Postoperative atrial fibrillation is common after cardiac surgery. In this study, we aimed to investigate the value of interatrial conduction time for the prediction of early postoperative atrial fibrillation, using intra-operative transoesophageal echocardiography.
A total of 65 patients undergoing cardiac surgery in our hospital between January and March 2007 were prospectively evaluated, and 59 patients with sinus rhythm were included in the study. We performed transoesophageal echocardiography on all patients, and intra-operatively measured the interatrial conduction time, as recently described. The patients with episodes of atrial fibrillation during the postsurgery hospitalisation period were defined as group 1 and those without episodes were defined as group 2.
Mean interatrial conduction time was 74 ± 15.9 ms in group 1 and 54 ± 7.9 ms in group 2. The difference in interatrial conduction time between the two groups was statistically significant (p < 0.05). In this study we found a statistically significant interatrial conduction delay between the groups. Postoperative atrial fibrillation was more frequent in patients with a longer interatrial conduction time.
Increased interatrial conduction time may cause postoperative atrial fibrillation and it can be measured intraoperatively by transoesophageal echocardiography.
心脏手术后术后房颤很常见。在本研究中，我们旨在利用术中经食管超声心动图研究房间传导时间对预测术后早期房颤的价值。
前瞻性评估了2007年1月至3月在我院接受心脏手术的65例患者，其中59例窦性心律患者纳入研究。我们对所有患者进行了经食管超声心动图检查，并按照最近描述的方法在术中测量了房间传导时间。将术后住院期间发生房颤的患者定义为1组，未发生房颤的患者定义为2组。
1组平均房间传导时间为74±15.9毫秒，2组为54±7.9毫秒。两组间房间传导时间差异有统计学意义（p<0.05）。在本研究中，我们发现两组间存在统计学意义的房间传导延迟。房间传导时间较长的患者术后房颤更常见。
房间传导时间延长可能导致术后房颤，且可通过术中经食管超声心动图测量。
