Table 3.

Interquartile Range of ECG Indexes 24 Hours After ROSC

Patient Population	Quartile, %	QT, ms	QTc, ms	PR, ms	QRS, ms	QTd, ms	Bazett QTcd, ms	Fridericia QTcd, ms	Relative QTd, ms	Temperature, °C, Mean±SD
Total population	25	476	509	142	83	94	100	101	5.03	34.35±1.2
	50	568	561	170	95	125	126	125	6.81
	75	704	613	204	114	164	159	157	9.57
	99	816	816	262	254	301	335	331	20.83
Survivors	25	466	503	137	81	74	76	77	4.32	34.6±1.1
	50	513	543	164	91	88	94	100	5.25
	75	616	608	201	111	107	111	112	6.59
	99	772	692	244	200	206	197	185	13.32
Neurologically intact	25	476	503	140	78	72	62	76	4.17	34.75±1.2
	50	518	538	164	87	77	85	87	5.13
	75	600	583	206	106	107	99	112	6.33
	99	772	692	244	136	172	158	159	10.52
Residual neurologic disability	25	406	490	128	85	82	93	94	5.03	34.27±0.6
	50	498	570	140	97	91	105	102	6.11
	75	647	631	166	111	112	115	120	7.66
	99	703	666	195	200	206	197	186	13.32
Deceased	25	520	538	155	85	126	126	126	6.35	34.1±1.3
	50	588	593	181	96	150	150	148	8.45
	75	644	639	204	125	209	210	202	11.74
	99	816	816	262	254	321	335	331	20.83

Neurologically intact: CPC 1–2 at discharge. Residual neurologic disability: CPC 3–4 at discharge. CPC indicates Cerebral Performance Category; QTc, corrected QT interval; QTcd, corrected QT dispersion; QTd, QT dispersion; and ROSC, return of spontaneous circulation.