Talk to the Veterans Crisis Line now
U.S. flag
An official website of the United States government

VA Health Systems Research

Go to the VA ORD website
Go to the QUERI website

HSR&D Citation Abstract

Search | Search by Center | Search by Source | Keywords in Title

Characteristics, management, and outcome of patients with acute myocardial infarction treated with bypass surgery. Myocardial Infarction Triage and Intervention Investigators.

Every NR, Maynard C, Cochran RP, Martin J, Weaver WD. Characteristics, management, and outcome of patients with acute myocardial infarction treated with bypass surgery. Myocardial Infarction Triage and Intervention Investigators. Circulation. 1996 Nov 1; 94(9 Suppl):II81-6.

Dimensions for VA is a web-based tool available to VA staff that enables detailed searches of published research and research projects.

If you have VA-Intranet access, click here for more information vaww.hsrd.research.va.gov/dimensions/

VA staff not currently on the VA network can access Dimensions by registering for an account using their VA email address.
   Search Dimensions for VA for this citation
* Don't have VA-internal network access or a VA email address? Try searching the free-to-the-public version of Dimensions



Abstract:

BACKGROUND: Although multiple studies have addressed the efficacy of bypass surgery in patients with stable angina, there are relatively few studies that have evaluated the optimal timing, risk of hospital mortality, and long-term outcome for patients with bypass surgery performed in the setting of acute infarction. METHODS AND RESULTS: With data collected from all admitted patients with acute myocardial infarction to 19 Seattle-area hospitals between 1988 and 1994, we studied the characteristics, hospital course, and long-term outcome in 1299 patients who underwent bypass surgery. There was no difference in hospital mortality in patients operated on during the first 24 hours after admission compared with those operated on later in the hospital course (8.3% versus 7.2%; P = .60). Factors that predicted hospital mortality in those who underwent bypass surgery included increased age, prior bypass surgery, infarct extension, and stroke. Long-term outcome in those who underwent bypass surgery was excellent, with low rates of subsequent coronary angiography (7.4% at 3 years) and coronary angioplasty (2.6% at 3 years). Three-year survival was better in bypass recipients than in those treated medically (83% versus 66%; P < .0001), and this difference remained after multivariate adjustment for baseline differences (hazard ratio, 0.68; 95% CI, 0.55 to 0.85). CONCLUSIONS: Patients can be safely operated on early in the course of acute infarction, risk factors for hospital mortality are not substantially different from factors identified in the noninfarct setting, and bypass surgery in select patients after acute infarction is associated with low repeat procedure use and excellent long-term survival.





Questions about the HSR website? Email the Web Team

Any health information on this website is strictly for informational purposes and is not intended as medical advice. It should not be used to diagnose or treat any condition.