Table 1 Summary of the results of the analysis of lead II electrocardiograms in healthy domestic swine according to their body weight in 10 kg increments
Body weight (kg) | P-wave amplitude (millivolts) | P-wave duration (seconds) | Duration of PQ interval (seconds) | Duration of QRS interval (seconds) | R-wave amplitude (millivolts) | Duration of QT interval (seconds) | QTc ratio (ms/√s) | Heart's electrical axis (degrees) | Number of animals |
|---|---|---|---|---|---|---|---|---|---|
20-29 | 0.11 ± 0.02 | 0.06 ± 0.01 | 0.10 ± 0.02 | 0.07 ± 0.01 | 0.46 ± 0.25 | 0.26 ± 0.03 | 392 ± 33 | 103 ± 49 | 11 |
30-39 | 0.13 ± 0.06 | 0.06 ± 0.01 | 0.11 ± 0.02 | 0.07 ± 0.01 | 0.36 ± 0.16 | 0.27 ± 0.03 | 394 ± 25 | 80 ± 65 | 23 |
40-49 | 0.14 ± 0.03 | 0.06 ± 0.01 | 0.11 ± 0.02 | 0.07 ± 0.01 | 0.43 ± 0.25 | 0.28 ± 0.03 | 289 ± 39 | 91 ± 62 | 18 |
50-59 | 0.15 ± 0.04 | 0.07 ± 0.01 | 0.12 ± 0.02 | 0.07 ± 0.01 | 0.38 ± 0.28 | 0.28 ± 0.02 | 381 ± 31 | 93 ± 79 | 8 |
60-69 | 0.15 ± 0.04 | 0.07 ± 0.01 | 0.12 ± 0.02 | 0.07 ± 0.01 | 0.38 ± 0.20 | 0.28 ± 0.02 | 379 ± 44 | 87 ± 24 | 8 |
70-79 | 0.15 ± 0.03 | 0.07 ± 0.01 | 0.12 ± 0.02 | 0.07 ± 0.01 | 0.43 ± 0.20 | 0.29 ± 0.08 | 410 ± 23 | 45 ± 44 | 9 |
80-89 | 0.15 ± 0.03 | 0.07 ± 0.01 | 0.12 ± 0.01 | 0.07 ± 0.01 | 0.39 ± 0.20 | 0.31 ± 0.05 | 418 ± 39 | 96 ± 74 | 12 |
90-99 | 0.15 ± 0.04 | 0.07 ± 0.01 | 0.12 ± 0.01 | 0.07 ± 0.01 | 0.25 ± 0.35 | 0.33 ± 0.05 | 419 ± 33 | 56 ± 85 | 10 |
100-109 | 0.15 ± 0.05 | 0.07 ± 0.01 | 0.12 ± 0.02 | 0.07 ± 0.01 | 0.21 ± 0.12 | 0.32 ± 0.03 | 409 ± 46 | 86 ± 71 | 11 |
110-119 | 0.16 ± 0.05 | 0.08 ± 0.02 | 0.13 ± 0.02 | 0.08 ± 0.01 | 0.27 ± 0.19 | 0.33 ± 0.02 | 398 ± 40 | 70 ± 62 | 16 |
120-129 | 0.16 ± 0.06 | 0.08 ± 0.02 | 0.14 ± 0.02 | 0.08 ± 0.01 | 0.38 ± 0.32 | 0.35 ± 0.07 | 446 ± 36 | 78 ± 24 | 9 |
130-139 | 0.16 ± 0.04 | 0.08 ± 0.01 | 0.14 ± 0.02 | 0.08 ± 0.01 | 0.37 ± 0.24 | 0.35 ± 0.03 | 428 ± 33 | 91 ± 37 | 21 |
140-149 | 0.16 ± 0.04 | 0.08 ± 0.01 | 0.15 ± 0.02 | 0.08 ± 0.01 | 0.47 ± 0.36 | 0.36 ± 0.03 | 446 ± 33 | 62 ± 88 | 6 |
150-159 | 0.16 ± 0.05 | 0.08 ± 0.01 | 0.15 ± 0.03 | 0.09 ± 0.01 | 0.54 ± 0.18 | 0.38 ± 0.04 | 429 ± 28 | 77 ± 22 | 8 |