Intracerebral hemorrhage was associated with a high incidence of ECG abnormalities, with 94% showing abnormally long Q-T intervals and 65% showing T or U wave changes.
Observational (n=77)
Specific ECG abnormalities, particularly marked Q-T prolongation and T or U wave changes, are highly prevalent in patients with intracerebral hemorrhage compared to other types of cerebrovascular accidents.
Absolute Event Rate: 65% vs 14%
Abstract. Based on an epidemiological study, ECGs have been studied in 77 patients with cerebrovascular accidents. In the group with intracerebral hemorrhage ECG abnormalities of the T or U wave of the kind first described by Burch et al, were seen in 65% of all cases. In addition 16 of 17 patients in this group showed abnormal prolongations of the Q‐T interval (average 124% of normal). ECG had been recorded in only 5 of 18 patients with subarachnoidal hemorrhage and consequently no firm conclusions can be drawn regarding the incidence of specific ECG abnormalities in this group. Four of the 5 patients, though, had prolonged Q‐T duration. The incidence of T or U wave changes in the groups with thromboembolic disorders or transient ischemic attacks was low (14%) or non‐existent. Furthermore Q‐T durations varied, the averages being only 106% and 105% of normal. Finally, in the unspecified group, 28% showed T or U wave changes and rather marked Q‐T prolongations. As discussed previously, these cases may represent patients with undiagnosed intracerebral bleedings. In conclusion, ECG changes with marked increase of the Q‐T interval and specific T or U wave changes were most commonly found in patients with intracerebral hemorrhage, 94% of all showing abnormally long Q‐T intervals while 65% showed T or U wave abnormalities as well.
Hansson et al. (Sat,) conducted a observational in Cerebrovascular accidents (n=77). Intracerebral hemorrhage vs. Thromboembolic disorders or transient ischemic attacks was evaluated on T or U wave changes. Intracerebral hemorrhage was associated with a high incidence of ECG abnormalities, with 94% showing abnormally long Q-T intervals and 65% showing T or U wave changes.