Table 3. Amplitude and duration of J waves observed in cats with hypertrophic cardiomyopathy at each lead.

J wave	Amplitude	Duration
	(mV)	(msec)
Lead I (n=9)	0.07 ± 0.03	0.13 ± 0.06
Lead II (n=20)	0.06 ± 0.02	0.16 ± 0.05
Lead III (n=16)	0.08 ± 0.03	0.18 ± 0.05
Lead aVR (n=5)	0.08 ± 0.03	0.13 ± 0.06
Lead aVL (n=7)	0.1 ± 0.00	0.2 ± 0.12

HCM: hypertrophic cardiomyopathy; n: number of cats. *Values are expressed as mean ± standard deviation.