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J Nucl Cardiol. 1995 Mar-Apr;2(2 Pt 1):110-6.

Independent and incremental prognostic value of exercise thallium single-photon emission computed tomographic imaging in women.

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1
Philadelphia Heart Institute, Presbyterian Medical Center, PA 19104, USA.

Abstract

BACKGROUND:

This study examined the independent and incremental prognostic value of exercise thallium single-photon emission computed tomographic imaging in 212 women who also underwent coronary angiography.

METHODS AND RESULTS:

The left ventricular ejection fraction was normal (65% +/- 15%). During a mean follow-up of 40 months, 27 women had events (cardiac death or nonfatal myocardial infarction). Univariate Cox survival analysis showed several variables to be different between patients with events and those without events: age, exercise heart rate, the extent of coronary artery disease, reversible thallium defects, number of segments with reversible abnormality, and size of perfusion abnormality. Multivariate survival analysis showed that a large perfusion abnormality and age were the independent predictors of events. Actuarial life-table analysis showed that women with a large thallium abnormality (> or = 15% of the myocardium) had significantly worse event-free survival rates than had women with no or small abnormalities (Mantel-Cox statistic = 16; p = 0.0001).

CONCLUSIONS:

Thus exercise thallium-201 single-photon emission computed tomographic imaging provides independent and incremental prognostic information to clinical, exercise, and coronary angiographic results in women. The presence of a larger thallium abnormality identifies women at high risk of cardiac events.

PMID:
9420775
[Indexed for MEDLINE]

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