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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 To quantitatively study the characteristics of ventricular wall motion in patients with tetralogy of Fallot and to evaluate the satisfaction of orthodontics with the standard deviation of phase distribution (PSD). Methods 24 cases of normal controls, tetralogy of Fallot patients 59 cases. Balance method radionuclide imaging was used to calculate PSD. Results In the control group, the PSD of the left ventricle (9.7 ± 2. 8) ° and the left ventricular PSD of 86.4% (51 cases) of patients with tetralogy of Fallot before and after surgery were (20.5 ± 15.5) ° and (10 .0 ± 7.2) °, a significant improvement. The PSD of the remaining 8 patients before and after surgery were (11.2 ± 7.8) ° and (2 1.3 ± 9.3) °, respectively. The postoperative PSD was increased compared with that before operation. Conclusions PSD is consistent with the improvement of ventricular wall motion and heart function after tetralogy of Fallot surgery and is one of the indicators reflecting the degree of satisfaction with orthodontics.