کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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5983680 | 1178299 | 2014 | 8 صفحه PDF | دانلود رایگان |
BackgroundRight ventricular (RV) failure is a major cause of morbidity and mortality after left ventricular assist device (LVAD) implantation. Whether RV function deteriorates with prolonged LVAD support is unknown. Speckle-tracking echocardiography provides a sensitive, noninvasive, reproducible, and quantitative assessment of RV systolic and diastolic function.MethodsEchocardiograms were retrospectively reviewed from before and after implantation of a Heartmate II LVAD. Speckle-tracking analysis was performed to measure RV longitudinal systolic strain, strain rate, and diastolic strain rate for each patient at baseline and over discrete time periods after LVAD implantation.ResultsSeventeen patients were included in the analysis, with an average follow-up after LVAD implantation of 234 ± 125 days. RV systolic strain improved in 15 patients, decreasing from â7.4 ± 2.3% to â9.7 ± 3.3% after LVAD (P = .026). Systolic strain rate improved in 11 patients, decreasing from â0.67 ± 0.25%/s to â0.96 ± 0.36%/s (P = .011). RV diastolic strain rate improved in 12 patients, increasing from 0.70 ± 0.33%/s to 1.02 ± 0.40%/s (P = .016).ConclusionsChronic LVAD support improves RV systolic and diastolic function in LVAD patients who did not require an RV assist device. Speckle-tracking echocardiography may offer a noninvasive technique for identifying and monitoring improvements in RV function in LVAD patients.
Journal: Journal of Cardiac Failure - Volume 20, Issue 7, July 2014, Pages 498-505