Electroencephalogram-Based Prognosis of Cardiac Surgery — A Long-Term Follow-Up Study
Hansotia et al.  reported on the use of electroencephalogram (EEG) in determining the immediate outcome of cardiac surgery. During a two year period between 1970 and 1972, 117 patients undergoing cardiac operations were studied. EEGs were recorded pre-operatively, in the recovery room (up to 12 hr. post-operatively), 24 hr., 2 days, 7 days, and at regular weekly intervals if abnormal. Operative and anesthesia data were correlated with EEG findings. All patients had normal EEGs pre-operatively. On the basis of EEG criteria, four groups were identified: Group I — The EEG remained normal throughout the postoperative period (41 patients); Group II — Diffuse, nonspecific EEG abnormalities in the recovery room, followed by a normal EEG thereafter (25 patients); Group III — Abnormal EEG in the recovery room with essentially no change throughout the remainder of the hospital stay (40 patients); and Group IV — Abnormal EEG in the recovery room with a progressively worsening pattern until the patient died (11 patients).
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- 2.T. Aberg and M. Kihlgren, Cerebral protection during open-heart, surgery, Thorax. 32: 525 (1977).Google Scholar
- M. A. Branthwaite, Prevention of neurological damage during open-heart surgery, Thorax. 30: 258 (1975).Google Scholar
- 5.P. E. Kritikou and M. A. Branthwaite, Significance of changes in cerebral electrical activity at onset of cardiopulmonary bypass, Thorax. 32: 534 (1977).Google Scholar
- 6.R. R. Myers, J. J. Stockard, and L. J. Saidman, Monitoring of cerebral perfusion during anesthesia by time-compressed Fourier analysis of the electroencephalogram, Stroke. 8: 331 (1977).Google Scholar
- 9.K. A. Sotaniemi, The benefits of open-heart surgery as reflected in the EEG, Scand. J. Thorac. Cardiovasc. Surg. 15:205 (1981).Google Scholar
- 16.B. J. Gersh, R- A. Kronmal, R. L. Frye, H. V. Schaff, T. J. Ryan, A. J. Gosselin, G. C. Kaiser, T. Killip, III, and Participants in the Coronary Artery Surgery Study, Coronary arteriography and coronary artery bypass surgery: Morbidity and mortality in patients ages 65 years or older: A report from the coronary artery surgery study. Circulation, 67: 483 (1983).PubMedCrossRefGoogle Scholar
- 18.M. G. Bourassa, L. Campeau, J. Lesperance, and C. M. Grondin, Changes in grafts and coronary arteries after saphenous vein aortocoronary bypass surgery: Results at repeat angiography. Circulation65 (Suppl II):II90 (1982).Google Scholar
- 19.J. R. Kramer, Y. Matsuda, J. C. Mulligan, M. Aronow, and W. L. Proudfit, Progression of coronary atherosclerosis. Circulation. 63: 519 (1981).Google Scholar
- 20.A. V. G. Bruschke, T. S. Wijers, W. Kolsters, and J. Landmann, The anatomic evolution of coronary artery disease demonstrated by coronary arteriography in 256 non-operated patients. Circulation. 63: 527 (1981).Google Scholar
- 21.D. M. Cosgrove, F. D. Loop, and W. C. Sheldon, Results of myocardial revascularization: A 12-year experience. Circulation65 (Suppl II): II37 (1982).Google Scholar