Survival predictors in coronary artery disease. Medical and surgical comparisons

R. E. Vlietstra, J. L. Assad-Morell, R. L. Frye, L. R. Elveback, D. C. Connolly, E. L. Ritman, J. R. Pluth, D. A. Barnhorst, G. K. Danielson, R. B. Wallace

Research output: Contribution to journalArticle

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Abstract

Linear discriminant function analysis was used to test the independent prognostic value of nine variables in patients with coronary artery disease. For 68 medically treated patients who met the criteria for inclusion in the discriminant function analysis, the most reliable predictor of 2 year survival status was the left ventricular ejection fraction. The prognostic value of the ejection fraction was not improved by the addition of the number of vessels diseased. Comparisons of the survival of 130 medical and 284 surgical patients were made using subsets based on the ejection fraction. When the ejection fraction was ≥50%, the probability of 4 year survival was high for both medical (91%) and surgical (96%) groups. When the ejection fraction was <25%, the probability of 2 year survival was low in both groups. However, for patients with ejection fraction 25 through 49%, the surgical patients had a better chance (p<0.05) for a 3 year survival (89%) than did medical patients (68%). This study emphasizes the prognostic significance of the left ventricular ejection fraction, which should be considered in any comparison of survival in medically and surgically treated patients.

Original languageEnglish (US)
Pages (from-to)85-90
Number of pages6
JournalMayo Clinic Proceedings
Volume52
Issue number2
StatePublished - 1977
Externally publishedYes

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Coronary Artery Disease
Survival
Discriminant Analysis
Stroke Volume

ASJC Scopus subject areas

  • Medicine(all)

Cite this

Vlietstra, R. E., Assad-Morell, J. L., Frye, R. L., Elveback, L. R., Connolly, D. C., Ritman, E. L., ... Wallace, R. B. (1977). Survival predictors in coronary artery disease. Medical and surgical comparisons. Mayo Clinic Proceedings, 52(2), 85-90.

Survival predictors in coronary artery disease. Medical and surgical comparisons. / Vlietstra, R. E.; Assad-Morell, J. L.; Frye, R. L.; Elveback, L. R.; Connolly, D. C.; Ritman, E. L.; Pluth, J. R.; Barnhorst, D. A.; Danielson, G. K.; Wallace, R. B.

In: Mayo Clinic Proceedings, Vol. 52, No. 2, 1977, p. 85-90.

Research output: Contribution to journalArticle

Vlietstra, RE, Assad-Morell, JL, Frye, RL, Elveback, LR, Connolly, DC, Ritman, EL, Pluth, JR, Barnhorst, DA, Danielson, GK & Wallace, RB 1977, 'Survival predictors in coronary artery disease. Medical and surgical comparisons', Mayo Clinic Proceedings, vol. 52, no. 2, pp. 85-90.
Vlietstra RE, Assad-Morell JL, Frye RL, Elveback LR, Connolly DC, Ritman EL et al. Survival predictors in coronary artery disease. Medical and surgical comparisons. Mayo Clinic Proceedings. 1977;52(2):85-90.
Vlietstra, R. E. ; Assad-Morell, J. L. ; Frye, R. L. ; Elveback, L. R. ; Connolly, D. C. ; Ritman, E. L. ; Pluth, J. R. ; Barnhorst, D. A. ; Danielson, G. K. ; Wallace, R. B. / Survival predictors in coronary artery disease. Medical and surgical comparisons. In: Mayo Clinic Proceedings. 1977 ; Vol. 52, No. 2. pp. 85-90.
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