Why the study?
Does supine exercise radionuclide ventriculography improve prognostic accuracy for 3-year survival in survivors of myocardial infarction?
Does supine exercise radionuclide ventriculography improve prognostic accuracy for 3-year survival in survivors of myocardial infarction?
Adding radionuclide ventriculography parameters to standard ECG and exercise variables improves the prediction of 3-year mortality in post-myocardial infarction patients.
A total of 240 survivors of one or more myocardial infarctions were consecutively admitted to perform supine exercise radionuclide ventriculography. Within 3 years after the test, 22 died; this group was compared to an age-matched control group of 22 survivors for left and right ventricular function during rest, exercise, and simultaneously assessed exercise performance as well as ECG variables. Evaluation of 3-year survival by linear discriminant analysis revealed an accuracy of 82% for discriminant models using ECG and exercise performance variables. Implementation of resting left ventricular ejection fraction and change of right ventricular ejection fraction during exercise, as well as scintigraphic presence or absence of dyskinesia, improved the accuracy of the model to 91% of correctly classified patients.
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Fridrich et al. (1988) studied this question.
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