BackgroundIn postmenopausal women, the presence of risk factors for coronary artery
disease (CAD) increases. However, the difference in prevalence of ischemia
between pre- and postmenopausal women with multiple risk factors for CAD has
not been well established.ObjectivesTo compare the prevalence of ischemia on Tc99m-sestamibi
myocardial perfusion scintigraphy (MPS) in pre-and postmenopausal women, and
to evaluate whether menopause can be considered an independent risk
predictor of ischemia in women with multiple risk factors for CAD.MethodsThis study retrospectively assessed 500 MPS of pre- and postmenopausal women
with multiple risk factors for CAD. Statistical analysis was performed by
using Fisher exact test and univariate and multivariate analysis, a p value
≤ 0.05 being considered significant.ResultsPostmenopausal women represented 55.9% of the sample; 83.3% were
hypertensive; 28.9%, diabetic; 32.1%, smokers; 25%, obese; 61.2% had high
cholesterol levels; and 34.3% had known CAD. Postmenopausal women were more
often hypertensive, diabetic and dyslipidemic, and had lower functional
capacity on exercise testing (p = < 0.005). The presence of ischemia on
MPS did not significantly differ between the pre- and postmenopausal groups
(p = 0.395). The only variable associated with ischemia on MPS was known CAD
(p = 0.004).ConclusionThe results suggest that, in women with multiple risk factors for CAD,
menopause was not an independent predictor of ischemia on MPS. Those data
support the idea that the investigation of ischemia via MPS in women with
multiple risk factors for CAD should begin prior to menopause.