Ratib O, Friedli B, Righetti A, Oberhaensli I
Cardiology Center, Geneva University Hospital, Switzerland.
Pediatr Cardiol. 1989 Winter;10(1):25-31. doi: 10.1007/BF02328631.
Regional wall motion patterns in tetralogy of Fallot and its postoperative modifications by electrical and hemodynamic factors were assessed by Fourier analysis of gated radionuclide angiograms in 24 studies performed in children after surgical correction of tetralogy of Fallot. The range of right ventricular (RV) phase angles (standard deviation of the peak [SDP] of RV) as well as the difference between RV and LV (delta MPh) were used as indices of the synchronicity of wall motion and were correlated with RV apical electrical activation time determined by endocardial electrical mapping. Postoperative studies were divided into two groups according to apical activation: (a) those involving right bundle branch block (RBBB) (nine patients), and (b) those involving distal RBBB (15 patients). delta MPh was longer in proximal than in distal RBBB. Best discrimination between the two groups was obtained with SDP of RV (proximal = 24 degrees +/- 3 degrees, and distal = 17 degrees +/- 2 degrees; p less than 0.0001). These results showed that the range of ventricular phases measured by the SD of the phase distribution of the right ventricle is a good index for distinguishing between proximal and distal RBBB after cardiac surgery.
通过对法洛四联症手术矫正后的儿童进行24项门控放射性核素血管造影的傅里叶分析，评估了法洛四联症的局部室壁运动模式及其术后电和血流动力学因素的改变。右心室（RV）相位角范围（RV峰值的标准差[SDP]）以及RV与左心室之间的差异（δMPh）被用作室壁运动同步性的指标，并与心内膜电图测定的RV心尖电激活时间相关。术后研究根据心尖激活情况分为两组：（a）涉及右束支传导阻滞（RBBB）的患者（9例），以及（b）涉及远端RBBB的患者（15例）。近端RBBB的δMPh比远端RBBB更长。用RV的SDP对两组进行最佳区分（近端=24°±3°，远端=17°±2°；p<0.0001）。这些结果表明，通过右心室相位分布的标准差测量的心室相位范围是区分心脏手术后近端和远端RBBB的良好指标。
