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Implantation of Left Ventricular Assist Device (LVAD) in Juvenile Landrace Swine: A LVAD Implantation Model of Pediatric Heart Failure
Published on: January 16, 2026
Cytomegalovirus reactivation and colitis after left ventricular assist device placement
Uriel Sandkovsky1, Diana F Florescu, John Y Um
1Division of Infectious Diseases, University of Nebraska Medical Center, Omaha, NE, USA. usandkovsky@unmc.edu
Insights
Cytomegalovirus (CMV) colitis can cause gastrointestinal bleeding in patients with HeartMate II left ventricular assist devices (LVADs). This study highlights the need to consider CMV colitis in post-LVAD patients experiencing bleeding.
Area of Science:
- Cardiology
- Infectious Diseases
- Gastroenterology
Background:
- Left ventricular assist devices (LVADs) like the HeartMate II are crucial for end-stage heart failure management.
- Immunosuppression is common in LVAD recipients, increasing susceptibility to opportunistic infections.
Observation:
- Two patients with HeartMate II LVADs presented with significant gastrointestinal bleeding.
- Diagnostic evaluation revealed cytomegalovirus (CMV) colitis as the underlying cause of bleeding in both cases.
Findings:
- Cytomegalovirus (CMV) colitis is a potential complication following HeartMate II LVAD implantation.
- Gastrointestinal bleeding in LVAD patients may be attributed to CMV reactivation.
Implications:
- Clinicians should maintain a high index of suspicion for CMV colitis in LVAD recipients with unexplained gastrointestinal bleeding.
- Further research into the mechanisms of CMV reactivation post-LVAD and effective management strategies is warranted.
Abstract:
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.
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