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Original Article
Volume 335:1857-1864 December 19, 1996 Number 25
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Adverse Cerebral Outcomes after Coronary Bypass Surgery
Gary W. Roach, M.D., Marc Kanchuger, M.D., Christina Mora Mangano, M.D., Mark Newman, M.D., Nancy Nussmeier, M.D., Richard Wolman, M.D., Anil Aggarwal, M.D., Katherine Marschall, M.D., Steven H. Graham, M.D., Ph.D., Catherine Ley, Ph.D., Gerard Ozanne, M.D., Dennis T. Mangano, Ph.D., M.D., Ahvie Herskowitz, M.D, Vera Katseva, Ph.D, Rita Sears, R.N., M.S, for The Multicenter Study of Perioperative Ischemia Research Group and the Ischemia Research and Education Foundation Investigators

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ABSTRACT

Background Acute changes in cerebral function after elective coronary bypass surgery are a difficult clinical problem. We carried out a multicenter study to determine the incidence and predictors of — and the use of resources associated with — perioperative adverse neurologic events, including cerebral injury.

Methods In a prospective study, we evaluated 2108 patients from 24 U.S. institutions for two general categories of neurologic outcome: type I (focal injury, or stupor or coma at discharge) and type II (deterioration in intellectual function, memory deficit, or seizures).

Results Adverse cerebral outcomes occurred in 129 patients (6.1 percent). A total of 3.1 percent had type I neurologic outcomes (8 died of cerebral injury, 55 had nonfatal strokes, 2 had transient ischemic attacks, and 1 had stupor), and 3.0 percent had type II outcomes (55 had deterioration of intellectual function and 8 had seizures). Patients with adverse cerebral outcomes had higher in-hospital mortality (21 percent of patients with type I outcomes died, vs. 10 percent of those with type II and 2 percent of those with no adverse cerebral outcome; P<0.001 for all comparisons), longer hospitalization (25 days with type I outcomes, 21 days with type II, and 10 days with no adverse outcome; P<0.001), and a higher rate of discharge to facilities for intermediate- or long-term care (47 percent, 30 percent, and 8 percent; P<0.001). Predictors of type I outcomes were proximal aortic atherosclerosis, a history of neurologic disease, and older age; predictors of type II outcomes were older age, systolic hypertension on admission, pulmonary disease, and excessive consumption of alcohol.

Conclusions Adverse cerebral outcomes after coronary bypass surgery are relatively common and serious; they are associated with substantial increases in mortality, length of hospitalization, and use of intermediate- or long-term care facilities. New diagnostic and therapeutic strategies must be developed to lessen such injury.


Source Information

From Kaiser Permanente Medical Center, San Francisco (G.W.R.); New York University, N.Y. (M.K., K.M.); Stanford University, Stanford, Calif. (C.M.M.); Duke University, Durham, N.C. (M.N.); Mercy Medical Center, Redding, Calif. (N.N.); Medical College of Virginia, Richmond (R.W.); Veterans Affairs Medical Center, Milwaukee (A.A.); University of Pittsburgh, Pittsburgh (S.H.G.); the Ischemia Research and Education Foundation, San Francisco (C.L.); and the Veterans Affairs Medical Center, San Francisco (G.O., D.T.M.). Other authors were Ahvie Herskowitz, M.D., Vera Katseva, Ph.D., and Rita Sears, R.N., M.S.

Address reprint requests to Dr. Dennis Mangano at the Ischemia Research and Education Foundation, 250 Executive Park Blvd., Suite 3400, San Francisco, CA 94134.

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Related Letters:

Adverse Cerebral Outcomes after Coronary Bypass Surgery
Kouchoukos N. T., Barzilai B., Dávila-Román V. G., Hariawala M. D., Goldsborough M. A., Selnes O. A., McKhann G. M., Roach G. W., Mangano D. T.
Extract | Full Text  
N Engl J Med 1997; 336:1605-1607, May 29, 1997. Correspondence

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