Key result
Neurosurgery resulted in postoperative electrocardiographic deterioration in 50% of patients with subarachnoid hemorrhage and 100% of those with supracellar tumors within one week, which was significantly associated with operation time over 6 hours and blood loss over 1,000 ml.
Why the study?
Does neurosurgery induce electrocardiographic and laboratory changes in neurosurgical patients?
Observational (n=130)
No
Does neurosurgery induce electrocardiographic and laboratory changes in neurosurgical patients?
Neurosurgery is associated with postoperative ECG deterioration, particularly in cases with prolonged operation times, high blood loss, or specific pathologies like supra-cellar tumors, correlating with electrolyte shifts.
Answers are grounded in this paper and cite their sources.
May warrant closer ECG monitoring after prolonged neurosurgery with major blood loss; hypothesis-generating observation requiring prospective validation.
Electrocardiograms (ECG) and laboratory data were studied in 130 neurosurgical patients before and after neurosurgery. The following results were obtained:1. The postoperative ECG showed ST-T changes in 21 % of the cases with subarachnoid hemorrhage, 15 % with cerebral tumor, 37.5 % with supracellar tumor and 50 % with Parkinson syndrome.2. In 50 % of subarachnoid hemorrhage and 47 % of cerebral tumor, postoperative ECG deteriorated within 1 week. After 2 weeks such deterioration was observed in only 37 % in the former cases and 43 % in the latter.3. Postoperative ECGs were improved or unchanged in 83 % cases of cerebral bleeding, 75 % (within 1 week) and 83 % (after 2 weeks) of intracerebral bleeding, and in all of Parkinson syndrome. However, in the cases of supra-cellar tumor, postoperative ECGs deteriorated 100 % within 1 week and 75 % after 2 weeks.4. Serum K+ and Ca++ were decreased significantly in the group with deteriorated postoperative ECGs. The R. B. C., Hb and Ht were decreased regardless of postoperative ECGs.5. Postoperative ECGs deteriorated when the operation time lasted longer than 6 h or blood loss during the operation was over 1, 000 ml.
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Yoshida et al. (1981) conducted an observational in Neurosurgical conditions (e.g., subarachnoid hemorrhage, cerebral tumor, supracellar tumor, Parkinson syndrome) (n=130). Neurosurgery vs. Preoperative state was evaluated on Postoperative electrocardiographic (ECG) deterioration. Neurosurgery resulted in postoperative electrocardiographic deterioration in 50% of patients with subarachnoid hemorrhage and 100% of those with supracellar tumors within one week, which was significantly associated with operation time over 6 hours and blood loss over 1,000 ml.
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