Table 2 Summary of the results of the analysis of lead II electrocardiograms in healthy domestic swine according to their age
Age (months) | P-wave amplitude (millivolts) | P-wave duration (seconds) | Duration of PQ interval (seconds) | Duration of QRS interval (seconds) | R-wave amplitude (millivolts) | Duration QT interval (seconds) | QTc ratio (ms/√s) | Heart's electrical axis (degrees) | Number of animals |
|---|---|---|---|---|---|---|---|---|---|
2 | 0.11 ± 0.02 | 0.059 ± 0.007 | 0.1 ± 0.02 | 0.07 ± 0.008 | 0.41 ± 0.23 | 0.26 ± 0.03 | 383 ± 39 | 91 ± 48 | 19 |
3 | 0.14 ± 0.04 | 0.060 ± 0.009 | 0.11 ± 0.01 | 0.07 ± 0.006 | 0.39 ± 0.19 | 0.27 ± 0.02 | 388 ± 34 | 86 ± 64 | 33 |
4 | 0.14 ± 0.04 | 0.065 ± 0.011 | 0.11 ± 0.02 | 0.07 ± 0.011 | 0.39 ± 0.21 | 0.27 ± 0.05 | 389 ± 31 | 82 ± 70 | 25 |
5 | 0.14 ± 0.03 | 0.068 ± 0.009 | 0.12 ± 0.01 | 0.07 ± 0.009 | 0.32 ± 0.25 | 0.32 ± 0.04 | 408 ± 26 | 85 ± 87 | 24 |
6 | 0.15 ± 0.05 | 0.070 ± 0.021 | 0.13 ± 0.02 | 0.08 ± 0.012 | 0.27 ± 0.22 | 0.33 ± 0.04 | 407 ± 45 | 87 ± 24 | 32 |
7 | 0.16 ± 0.04 | 0.070 ± 0.013 | 0.14 ± 0.01 | 0.08 ± 0.011 | 0.38 ± 0.26 | 0.35 ± 0.03 | 437 ± 36 | 84 ± 50 | 29 |
8 | 0.16 ± 0.04 | 0.080 ± 0.012 | 0.15 ± 0.02 | 0.09 ± 0.011 | 0.54 ± 0.18 | 0.38 ± 0.04 | 429 ± 39 | 60 ± 52 | 8 |