Suzumiya H, Matsuoka Y, Hayakawa K
Department of Pediatrics, Miyazaki Medical College, Japan.
J Electrocardiol. 1988 Jan;21(1):15-23. doi: 10.1016/s0022-0736(88)80019-0.
One hundred body surface isopotential maps for 30 normal infants, ages three hours to seven days, were evaluated. Ventricular activation and recovery were examined. In the early and mid phase of QRS, the maximum moved from the center of the anterior chest to the lower right portion of the anterior chest. In the late phase, the maximum appeared on the back. The niche appeared earlier in normal newborn infants (19.6 +/- 3.9 msec) (mean +/- S.D.) than in normal children (25.7 +/- 4.6 msec) (P less than 0.001). The location of the maximum at the time of peak positive potentials gradually shifted leftward during the first week of life. The 100 T wave maps were classified into three types. During the first day of life, the T wave maps showed type I or II, changing to type II or III a few days after birth. All T wave maps were type III a week after birth. The ratio of type III gradually increased with age. We found that the QRS maps were different from those of normal children and that T wave maps changed within the first week of birth.
对30名年龄在3小时至7天的正常婴儿的100张体表等电位图进行了评估。检查了心室的激活和恢复情况。在QRS波的早期和中期，最大值从前胸中心移至前胸右下部分。在晚期，最大值出现在背部。正常新生儿的心肌小凹出现时间（19.6±3.9毫秒）（平均值±标准差）比正常儿童（25.7±4.6毫秒）更早（P<0.001）。出生后第一周内，正电位峰值时最大值的位置逐渐向左移动。100张T波图分为三种类型。出生第一天，T波图显示为I型或II型，出生几天后变为II型或III型。出生一周后所有T波图均为III型。III型的比例随年龄逐渐增加。我们发现，这些QRS波图与正常儿童的不同，且T波图在出生后第一周内发生变化。
