相位分析法对法洛四联症心室收缩协调性的研究

Study on coordination of ventricular contraction by a phase analysis method in tetralogy of Fallot

目的 采用相位分布标准差 (PSD)定量研究法洛四联症患者室壁运动的特点和评价矫正术的满意程度。方法 正常对照者 2 4例 ,法洛四联症患者 5 9例。采用平衡法核素心室显像计算PSD。结果 对照组左心室PSD(9.7± 2 .8)°,法洛四联症患者中 86 .4% (5 1例 )手术前后左心室PSD分别为 (2 0 .5± 15 .5 )°和 (10 .0± 7.2 )° ,有明显改善。余 8例患者手术前后的PSD分别为 (11.2± 7.8)°和 (2 1.3± 9.3)°,手术后PSD较术前增加。结论 PSD与法洛四联症患者手术后心室室壁运动和心功能的改善相一致 ,是反映矫正术满意程度的指标之一。

Objective Quantitative study on the characters of left ventricular (LV) wall motion and assessing degree of satisfaction of surgical repair of tetralogy of Fallot with phase standard devication (PSD). Methods PSD was calculated by equilibrium radionuclide ventriculography in 24 normal controls and 59 patients of tetralogy of Fallot before and after operation. Results LV PSD was (9.7±2.8)°in 24 normal controls and (20.5±15.5)° and (10.0±7.2)° in 51(86.4%) of 59 patients of tetralogy of Fallot before and after surgical repair,respectively, and the difference was statistically significant (P<0.01).LV PSD was (11.2±7.8)° and (21.3±9.3)°,respectively before and after surgical repair in the remaining 8(13.4%) patients and the LV PSD was increased significantly after operation (P<0.05). Conclusions LV PSD is coordinate with improving degree of ventricular wall motion and heart function after surgical repair of tetralogy of Fallot.PSD is one of the heart function parameters for reflecting the degree of satisfaction of the surgical repair.