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ECG in the Child and Adolescent - part 5

Hình 3.2 Q biên độ theo độ tuổi dẫn tôi, mỗi đường cong tương ứng với mức phần trăm chỉ (• = trung bình). Q sóng trong dẫn tôi vắng mặt hoặc nhỏ trong giai đoạn trứng. | CHAPTER 3.2 Q amplitude by age in lead I Age days Age months Age years Flgune 3.2 Q amplitude by age in lead I each curve corresponding to the indicated percentile level mean . Q waves in lead I are absent or small during infancy. 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 0.04 0.06 0.05 0.06 0.06 0.08 0.11 0.17 0.13 0.13 0.10 0.10 Mean 0.01 0.01 0.01 0.01 0.01 0.01 0.02 0.03 0.02 0.02 0.02 0.02 SD 012 0.03 0.02 .00n 0.02 0.03 014 00 00 0.05 0.05 0.00 0.04 5 0 A5 0 0 0 0 0 0 0 e 0 0 N 109 128 95 100 113 91 97 113 107 99 289 510 22 CHAPTER 3.3 Q amplitude by age in lead II Age days Age months Age years Figure 3.3 Q amplitude by age in lead II each curve corresponding to the Indicated percentile level mean . Q waves in lead II are generally small or absent. The amplitude is relatively larger during ages 1-3 months 3-6 months 6-12 months and 1-3 years. Age Days Months Years 0-1 1-3 3-7 7-30 1-3 3-6 6-72 1-3 3-6 6-9 9-73 73-78 95 e 0.18 0.18 0.14 0.20 0.20 0.22 0.24 0.18 0.14 0.13 0.13 Mean e.04 0.04 0.05 .e 1 . . 0.07 0.00 0.05 0.70 0.00 0.00 0.03 SD 0.07 0.06 - 0.06 0.07 0-08 0.08 0.11 00 -5 -05 0.09 0.05 5 0 0 0 0 0 0 0 0 0 0 0 0 Nr 109 12 8 95 100 113 91 07 113 107 99 039 510 23 CHAPTER 3.4 Q amplitude by age in lead III Age days Age months Age years Fígure3.4 Q amplitude by age in lead III each curve corresponding to the indicated percentile level mean . Q waves in lead III are more prominent at ages 1-3 months 3-6 norths and 6-12 months with a deflection up to 6.1 mm. re1 rer Days r Months Years 0-1 1-3 3-7 7-30 1-3 3-6 6-72 1-3 3-6 6-9 9-73 73-78 rer 0.34 0.34 0.33 0.31 0.42 0.53 0.61 0.36 0.33 0.29 0.24 0.21 Mean 0.13 0.14 0.15 .or 1 .o o 0.22 1.o 0.1 0.09 9.1o 0.06 0.05 SD 0.11 0-12 -1 0.10 0J4 087 0.22 0 8 1 81 0.09 0.07 5 0 0 0 0 0 0 0 0 0 0 0 0 9 6 109 12 8 95 100 113 91 mo mi 107 99 089 510 .