The normal electrocardiograms in the conscious newborn lambs in neonatal period and its progression

BMC Physiology

Table 6 P wave and QTc interval dispersions in neonatal lambs

	Birth	7 days	14 days	21 days	28 days	35 days	P value
P min	0.030 ± 0.00	0.027 ± 0.004	0.025 ± 0.005	0.028 ± 0.003	0.030 ± 0.0	0.031 ± 0.003	0.0796
P max	0.075 ± 0.055	0.051 ± 0.006	0.055 ± 0.007	0.055 ± 0.005	0.052 ± 0.004	0.054 ± 0.007	0.3487
PWD	0.045 ± 0.055	0.024 ± 0.005	0.030 ± 0.008	0.027 ± 0.004	0.022 ± 0.004	0.022 ± 0.007	0.4119
QTc min	0.188 ± 0.009^ab	0.179 ± 0.020^a	0.187 ± 0.010^ab	0.207 ± 0.009^bc	0.211 ± 0.010^c	0.195 ± 0.00^abc	0.0004
QTc max	0.274 ± 0.007^ab	0.279 ± 0.022^ab	0.274 ± 0.007^ab	0.274 ± 0.007^ab	0.283 ± 0.010^ab	0.308 ± 0.007^c	<0.0001
QTcID	0.086 ± 0.014^ab	0.099 ± 0.029^ac	0.086 ± 0.011^ab	0.066 ± 0.006^b	0.072 ± 0.010^b	0.112 ± 0.004^c	<0.0001

PWD P wave dispersion, P max maximum P wave duration, Pmin minimum P wave duration
QTcD QT correted interval dispersion, QTc max maximum QTc interval duration, QTc min minimum QTc interval duration. Superscript letters in the same line are significantly different (P < 0.05). Values are expressed as mean ± SD. Results expressed as mean ± standard deviation

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