ECG in the Child and Adolescent - part 8

Hình 3,32 T biên độ theo độ tuổi dẫn đầu aVF, mỗi đường cong tương ứng với mức phần trăm chỉ (• = trung bình). Sóng T ở aVF thấp, bằng phẳng hoặc đảo ngược khi sinh. T sóng biên độ giảm trong những ngày đầu tiên của cuộc sống, theo sau bởi một sự gia tăng nhanh chóng cho đến khi 1-3 tháng tuổi, sau đó ổn định và tăng dần cho đến tuổi vị thành niên. | CHAPTER T amplitude by age in lead aVF Age days Age months Age years T amplitude by age In lead aVF each curve corresponding to the indicated percentile level . mean . The T waves n aVF are low flat or inverted at birth The T waves decreases during the first days of life followed by a rapid increase until age 1-3 months then steady and gradual increase until adolescence. Age r Days s Months Years 0-1 r 1-3 3-7 7-30 1-3 3-6 6-72 1-3 3-6 6-9 9-73 73-78 95 C .15 070 .17 719 . Mean 0N4 SD 5 . .0 N 109 128 95 100 129 92 97 113 197 100 989 510 52 CHAPTER T amplitude by age in lead V1 Age days Age months Age years T amplitude by age in lead V1 each curve corresponding to the indicated percentile level mean . T waves in V1 are characteristically upright low or only slightly invertedduring the first day of life. They all become inverted with increased depth until age 3-6 months then turning to be less inverted or even upright thereafter along with increasing age. Days Months Years 0-1 1-3 3-7 7-30 1-3 3-6 6-12 1-3 3-6 6-9 9-13 13-18 95 0r3 -032 3d 3r 023 Mean 020 - 020 - 726 SD 5 0 N 109 128 95 100 113 90 90 113 107 99 280 510 53 CHAPTER T amplitude by age in lead V2 T amplitude by age In lead V2 each curve corresponding to the Indicated percentile level mean . T wave changes by age in lead V2 are not as spectacular and charaeteristic as those registered in lead V1. Age Days Months Years e 1-3 3-7 7-30 1-3 3-6 6-72 1-3 3-6 6-9 9-73 13-18 95 .