Porapakkham Pornwalee, Porapakkham Pramote, Assavahanrit Jarin, Kijsanayotin Boonchai, Shing Keith Wing
Cardiology and Intervention Department, Central Chest Institute of Thailand, Bangkok, Thailand.
J Med Assoc Thai. 2012 Aug;95 Suppl 8:S44-50.
The benefits of right ventricular pacing in patients with symptomatic bradycardia are well recognized. Currently, left ventricular (LV) function after cardiac pacing has already been extensively investigated. However existing data on right ventricular (RV) function in these patients is extremely limited.
To test this, records of RV and tricuspid valve function of patients with a pacemaker measured at least a year after implantation were reviewed for a prevalence of RV dysfunction. The patients were also divided into those with and without RV dysfunction. Factors affecting the two groups were evaluated.
RV dysfunction and moderate to severe tricuspid valve regurgitation were found in approximately 4% and 21% respectively in cardiac pacing patients with mean implantation duration of 6.4 years. Compared to normal RV function, factors presumed to affect on RV dysfunction including site of pacing, pacing mode and percentage of ventricular pacing were not significantly different (p = 0.54, 0.37 and 0.12 respectively).
Based on these data, the prevalence of right ventricular dysfunction appears to be infrequent and factors that were assumed as contributors to LV dysfunction failed to show significant contributions to RV dysfunction.
有症状心动过缓患者行右心室起搏的益处已得到充分认可。目前，心脏起搏后左心室（LV）功能已得到广泛研究。然而，这些患者右心室（RV）功能的现有数据极为有限。
为验证这一点，回顾了起搏器植入至少一年后患者的右心室和三尖瓣功能记录，以评估右心室功能障碍的患病率。患者还被分为有和没有右心室功能障碍两组。对影响这两组的因素进行了评估。
平均植入时间为6.4年的心脏起搏患者中，右心室功能障碍和中度至重度三尖瓣反流的发生率分别约为4%和21%。与正常右心室功能相比，推测影响右心室功能障碍的因素，包括起搏部位、起搏模式和心室起搏百分比，差异均无统计学意义（分别为p = 0.54、0.37和0.12）。
基于这些数据，右心室功能障碍的患病率似乎较低，并且那些被认为是导致左心室功能障碍的因素并未对右心室功能障碍显示出显著影响。
