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Table 1 Electrocardiographic parameters in male and female 129/Sv, C57BL/6, and FVB conscious mice.

From: Method for non-invasively recording electrocardiograms in conscious mice

  129/Sv C57BL/6 FVB
  Males Females Males Females Males Females
  (n = 10) (n = 10) (n = 10) (n = 10) (n = 10) (n = 10)
Heart Rate (bpm) 571 ± 13 689 ± 12 * 692 ± 5 741 ± 2 * 736 ± 5 706 ± 7 *
HR var (bpm) 15 ± 4 20 ± 4 12 ± 3 15 ± 3 33 ± 2 16 ± 2 *
PR (ms) 31.9 ± 1.3 28.3 ± 0.6* 26.0 ± 0.8 24.4 ± 0.7 25.4 ± 0.6 27.7 ± 0.6 *
QRS (ms) 9.6 ± 0.3 8.5 ± 0.1* 8.1 ± 0.2 7.5 ± 0.2* 7.4 ± 0.1 7.7 ± 0.1
QT (ms) 70.2 ± 1.8 54.7 ± 2.0* 55.4 ± 0.8 53.8 ± 0.6 53.9 ± 1.2 55.7 ± 1.4
QTc (ms) 66.7 ± 1.9 58.4 ± 1.6* 59.0 ± 0.8 58.7 ± 0.3 59.3 ± 1.2 59.9 ± 1.6
  1. Values are mean ± SE. *, P < 0.05 vs. males within strain. HR var, heart rate variability.