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Submitted: 14 June 2016 Modified: 04 May 2017
HERDIN Record #: NCR-TMC-16061416024382

Predictive value of abnormal left atrial volume index (LAVI) in exercise stress echocardiography at The Medical City.

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Background: Left atrial enlargement is closely associated to the duration and magnitude of increased left ventricular filling pressure. Increased left ventricular filling pressure, reflected by an elevated left atrial volume index (LAVI) is theorized to mirror the burden of sub clinical disease ie., diastolic dysfunction which often precedes overt ischemic heart disease.

Methods: A total of one hundred thirty seven randomly selected patients underwent exercise stress echocardiography as part of their ischemic work-up. Left atrial volume was measured post exercise using the biplane area-length method then indexed to the body surface. The stress echocardiogram was interpreted as abnormal if wall motion abnormalities were noted with stress.

Results: There were 125 patients with normal stress echocardiograms and 12 with abnormal tests. There was no significant difference between the baseline mean LAVI between the two groups. The mean LAVI post exercise for the normal group was 22.66±3.37 mL/mand 28.92±6.56 mL/mfor the abnormal group which was statistically significant. Those patients with post exercise LAVI > 28 mL/mare 23.6 times more likely to have an abnormal stress echocardiogram based on this study.

Conclusion: An abnormal post exercise LAVI is possibly a signiificant predictor of an abnormal exercise stress echocardiogram

Publication Type
Research Report
May 13, 2014


To evaluate whether an abnormal or elevated LAVI is a predictor of an abnormal exercise stress echocardiogram and thus, a predictor of ischemic risk.



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