Table 3.

Patients with Structural Heart Disease: ECG Intervals in at Different Heart Rates

	BL	60 beats/min	80 beats/min	100 beats/min	F	P Value	t	P Value
Group B (Total)
RR (ms)	1182 ± 75	998 ± 5	751 ± 2	600 ± 2	–	<0.0001	–	–
PR (ms)	204 ± 27	206 ± 27	239 ± 38	281 ± 34	–	<0.0001	–	–
QRS (ms)	159 ± 28	159 ± 28	157 ± 29	160 ± 31	–	0.98	–	–
QT (ms)	489 ± 40§**	485 ± 41	462 ± 38‡††	437 ± 36†	16.04	<0.0001	−6.64	<0.0001
QTmin (ms)	465 ± 37§**	461 ± 37	437 ± 31*#	414 ± 31†	19.97	<0.0001	−7.43	<0.0001
JT (ms)	l330 ± 37§**	327 ± 37	304 ± 31∥	276 ± 28†	22.17	<0.0001	−7.68	<0.0001
QTcB (ms)	450 ± 40***	486 ± 41	533 ± 44∥	564 ± 47**	56.08	<0.0001	12.97	<0.0001
QTcFi (ms)	463 ± 40 **	486 ± 41	508 ± 41	518 ± 43*	14.59	<0.0001	6.54	<0.0001
QTcFa (ms)	461 ± 42‡**	486 ± 41	500 ± 38	498 ± 36	8.72	<0.0001	4.60	<0.0001
QTcH (ms)	473 ± 41#**	485 ± 41	497 ± 38	507 ± 36	5.71	<0.0001	4.16	<0.0001
QTcRa (ms)	418 ± 38***	444 ± 37	459 ± 30	455 ± 28	12.56	<0.0001	5.32	<0.0001
QTcN (ms)	467 ± 42,**	485 ± 41	502 ± 38	502 ± 36	7.31	<0.0001	4.40	<0.0001
JTcB (ms)	291 ± 36†**	327 ± 38	375 ± 35†∥	404 ± 36†	79.80	<0.0001	15.39	<0.0001
JTcFi (ms)	303 ± 35†**	327 ± 37	351 ± 33†	358 ± 33*	20.62	<0.0001	7.66	<0.0001
JTcFa (ms)	302 ± 37***	327 ± 37	343 ± 31	338 ± 28	12.37	<0.0001	5.25	<0.0001
JTcH (ms)	314 ± 37§**	327 ± 37	339 ± 31	347 ± 29†	7.69	<0.0001	4.80	<0.0001
JTcRa (ms)	334 ± 38***	358 ± 39	375 ± 31	371 ± 29	12.04	<0.0001	5.23	<0.0001
JTcN (ms)	310 ± 39   **	327 ± 37	346 ± 32	342 ± 28	9.28	<0.0001	4.69	<0.0001

*P < 0.01, †P < 0.001, and †P < 0.05 versus 60 beats/min; §P < 0.01,P < 0.001, #P < 0.05 versus 80 beats/min; ∥P < 0.01, **P < 0.001, ††P < 0.05 versus 100 beats/min.

Abbreviations as in Table 2.