The Clinical Value of Single Photon Emission Computed Tomography Myocardial Perfusion Imaging in Cardiac Risk Stratification of Very Elderly Patients (≥80 Years) with Suspected Coronary Artery Disease

Overview

Journal J Nucl Cardiol

Specialty Cardiology & Vascular Diseases

Date 2011 Nov 11

PMID 22071954

Citations 14

Authors

Sanjeev U Nair

Alan W Ahlberg

Shishir Mathur

Deborah M Katten

Donna M Polk

Gary V Heller

Affiliations

Soon will be listed here.

Abstract

Background: The role of single photon emission computed tomography myocardial perfusion imaging (SPECT MPI) in cardiac evaluation of the very elderly patients is unclear. We investigated the clinical value of SPECT MPI in very elderly patients (≥80 years) with suspected coronary artery disease (CAD) as well as in comparison to younger patients.

Methods And Results: A retrospective analysis of prospectively collected data from 8,864 patients [1,093 patients ≥80 years (very elderly), 3,369 patients 65-79 years (elderly), and 4,402 patients 50-64 years (middle-aged)] with suspected CAD who underwent exercise and/or pharmacologic stress testing with SPECT MPI between 1996 and 2005 was performed. Clinical and SPECT MPI characteristics, cardiac event rates, early (≤60 days) cardiac catheterization and revascularization rates of very elderly patients were compared to that of younger patients. Mean follow-up for cardiac events (cardiac death or non-fatal myocardial infarction) was 1.9 ± 0.9 years. Very elderly patients with moderate to severely abnormal SSS had a significantly higher annualized cardiac event rate than those with mildly abnormal or normal study (9.6% vs 3.4% and 2.5% respectively, P < .001). Across all categories of SSS, very elderly patients had a significantly higher cardiac event rate as compared to younger patients (P < .001). Early cardiac catheterization and revascularization referrals in very elderly patients increased as a function of severity of ischemia on SPECT MPI (P < .001), although these referral rates were significantly lower in very elderly patients with mild to moderate and severe ischemia as compared to younger patients (P < .05).

Conclusions: In very elderly patients (≥80 years) with suspected CAD, SPECT MPI has prognostic and incremental value in the noninvasive cardiovascular assessment for risk stratification and may influence medical decisions.

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