Cytomegalovirus reactivation and colitis after left ventricular assist device placement.

We describe two patients who developed gastrointestinal bleeding due to cytomegalovirus (CMV) colitis after placement of a HeartMate II left ventricular assist device (LVAD). We aim to raise awareness of CMV colitis as a possible cause of gastrointestinal bleeding after LVAD placement and discuss potential mechanisms for CMV reactivation and areas for future research.