Key result
Exercise 201T1 SPECT defect volume ratio strongly correlated with the end-systolic wall stress to end-systolic volume index ratio (r = -0.77, p < 0.05) in patients with chronic aortic regurgitation.
Why the study?
Does exercise 201Tl SPECT defect volume ratio correlate with left ventricular function parameters in patients with chronic aortic regurgitation?
Population
11 patients with chronic aortic regurgitation
Design
Cross-sectional
Authors
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May link SPECT defects to contractility loss in chronic AR; extends perfusion observations but leaves clinical role open.
Observational (n=11)
Does exercise 201Tl SPECT defect volume ratio correlate with left ventricular function parameters in patients with chronic aortic regurgitation?
Effect estimate: r = -0.77
p-value: p=<0.05
In patients with chronic aortic regurgitation, abnormal myocardial perfusion on exercise 201Tl SPECT correlates strongly with reductions in myocardial contractility (ESS/ESVI).
Yasuda et al. (2005) conducted an observational in chronic aortic regurgitation (n=11). Exercise 201T1 SPECT was evaluated on Correlation between defect volume ratio (DVR) and end-systolic wall stress (ESS)/end-systolic volume index (ESVI) (r = -0.77, p=<0.05). Exercise 201T1 SPECT defect volume ratio strongly correlated with the end-systolic wall stress to end-systolic volume index ratio (r = -0.77, p < 0.05) in patients with chronic aortic regurgitation.
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