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These ventricular arrhythmias may impair the support provided by continuous\u2010flow left ventricular assist devices (CF\u2010LVADs) and lead to frequent hospitalizations, antiarrhythmic medication use, external defibrillations, and need for heart transplantation. We report a case in which a patient with a CF\u2010LVAD and an implantable cardioverter defibrillator at end of life presented with asymptomatic low\u2010flow alarms and was found to have VF of unknown duration. Unique in our case was the presence of apparent organized contractility and rhythmic opening of the mitral valve on echocardiogram despite VF on electrocardiogram.<\/jats:p>","DOI":"10.1111\/jce.14904","type":"journal-article","created":{"date-parts":[[2021,1,23]],"date-time":"2021-01-23T10:25:20Z","timestamp":1611397520000},"page":"862-866","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":6,"title":["Ventricular fibrillation in a left ventricular assist device patient: Can the echocardiogram be misleading?"],"prefix":"10.1111","volume":"32","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-9661-0297","authenticated-orcid":false,"given":"Manavotam","family":"Singh","sequence":"first","affiliation":[{"name":"Division of Cardiology, MedStar Heart and Vascular Institute MedStar Washington Hospital Center Washington District of Columbia 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