. Author manuscript; available in PMC: 2009 Jun 1.

Published in final edited form as: J Inherit Metab Dis. 2008 May 23;31(3):424–431. doi: 10.1007/s10545-008-0821-1

Table 1.

Electrocardiographic interval measurements in MPS I and MPS VI cats. All of the measurements were within normal limits for this species.

	Age (mo)	N	HR (bpm)	PR (sec)	QRS (sec)	QT (sec)

Unaffected	≤ 12	6	171 ±26	0.08 ± 0.005**	0.05 ± 0.005	0.18 ± 0.024
	> 12	6	198 ± 25	0.07 ± 0.007	0.04 ± 0.005	0.17 ± 0.017

MPS I	≤ 12	8	211 ± 18	0.07 ± 0.007*	0.03 ± 0.008	0.15 ± 0.015
	> 12	10	214 ± 36	0.07 ± 0.008	0.04 ± 0.012	0.16 ± 0.027

MPS VI	≤ 12	4	195 ± 25	0.09 ± 0.011**	0.04 ± 0.010	0.18 ± 0.016
	> 12	5	198 ± 33	0.08 ± 0.013	0.04 ± 0.006	0.15 ± 0.062

(p<0.05 MPS I* vs MPS VI**; p<0.05 MPS I* vs. normal**)

ECG measurements [mean and (standard deviation)]

Normal feline ECG ranges: HR- 160-240 bpm; PR-0.05-0.09 sec; QRS- maximum of 0.04 sec; QT- 0.12-0.18 sec.