Nakasato M, Sato S, Akiba T
Department of Pediatrics, Yamagata University School of Medicine.
Nihon Rinsho. 1995 Jan;53(1):225-9.
Body surface isopotential T map was analyzed to detect right ventricular volume and pressure overloads in 25 patients with secundum atrial septal defect. Three patterns were distinguished: the T map resembling normal (type A, n = 9); that with isolated negative area in positive area (type B, n = 11); and that with rightward movement of maximum (type C, n = 5). Right ventricular end-diastolic volumes in type B (161 +/- 19% of normal; %N) and C (175 +/- 40% N) were significantly (p < 0.01) greater than those in control (100 +/- 9% N) and type A (113 +/- 18% N). Right ventricular systolic pressure in type C (48 +/- 11 mmHg) was significantly (p < 0.01) higher than those in control (30 +/- 5 mmHg), type A (31 +/- 4 mmHg) and type B (34 +/- 5 mmHg). These results suggest that the cases with type B have right ventricular volume overload, and those with type C have both volume and pressure overloads.
分析了25例继发孔型房间隔缺损患者的体表等电位T图，以检测右心室容量和压力超负荷情况。区分出三种模式：T图类似正常（A型，n = 9）；在阳性区域有孤立阴性区域（B型，n = 11）；以及最大值向右移动（C型，n = 5）。B型（161±19%正常；%N）和C型（175±40%N）的右心室舒张末期容积显著（p < 0.01）大于对照组（100±9%N）和A型（113±18%N）。C型的右心室收缩压（48±11 mmHg）显著（p < 0.01）高于对照组（30±5 mmHg）、A型（31±4 mmHg）和B型（34±5 mmHg）。这些结果表明，B型病例有右心室容量超负荷，而C型病例既有容量超负荷又有压力超负荷。
