Table 3 Heart rate, RR interval, and electrical axis of neonatal lambs

Birth

3.88 ± 0.88^a

0.0025 ± 0.00037^a

191.95 ± 42.17^a*

334.86 ± 69.15^a

29.63 ± 108.50°

(2.40–5.60)

(0.0018–0.0032)

(193–160)

(490–230)

7

5.30 ± 1.31^b

0.0030 ± 0.00050^b

214.95 ± 54.58^b

297.04 ± 69.12^a

5.31 ± 110.39°

(3.00–7.60)

(0.0021–0.0039)

(305–122)

(413–197)

14

6.84 ± 1.78^c

0.0036 ± 0.00062^c

195.50 ± 37.74^ab

305.90 ± 57.22^a

−18.86 ± 115.31°

(3.40–10.00)

(0.0022–0.0047)

(260–108)

(480–223)

21

8.17 ± 2.05^d

0.0041 ± 0.00067^d

173.04 ± 30.72^c

361.18 ± 56.17^d

−8.45 ± 113.61°

(4.60–12.00)

(0.0028–0.0053)

(250–110)

(467–270)

28

9.50 ± 2.45^e

0.0045 ± 0.00077^e

158.81 ± 22.14^cd

379.81 ± 44.88^b

−37.77 ± 113.36°

(5.55 ± 13.20)

(0.0031–0.0056)

(211–116)

(467–320)

35

10.78 ± 2.91^f

0.0049 ± 0.00088^f

145.63 ± 37.80^d

441.63 ± 115.28^c

−29.63 ± 117.39°

(5.50 ± 15.10)

(0.0031–0.0062)

(260–92)

(230–423)