Abstract| Volume 23, ISSUE 10, SUPPLEMENT , S80, October 2017

Impact of Three-Dimensional Maximum Principal Strain Using Cardiac Computed Tomography in Aortic Stenosis

      Previous studies reported that left ventricular systolic dysfunction in severe aortic stenosis (AS) with preserved ejection fraction was reflected in the global longitudinal strain (GLS) by transthoracic echocardiogram (TTE). Recently three-dimensional maximum principal strain could be measured using cardiac CT. A 68-year-old man was admitted due to chest pain. Coronary CT angiography showed no significant coronary stenosis. A TTE revealed severe AS with an aortic valve area of 0.69 cm2 and mean pressure gradient of 49 mmHg, and an aortic peak velocity of 4.4 m/s. GLS recovered at 1 year after aortic valve replacement (AVR) compared to that before AVR (−16.1% vs −13.6%). The decreased average peak maximum principal strain value in this patient was improved after surgery (0.38 vs 0.54). We report this case with some literature review.
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