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Left Ventricular Assist Device-Associated Gastrointestinal Bleeding: Recognition of an Iatrogenic Etiology on

D Kenneth Jamison1, Aaron F Yang1, Reza Arsanjani2

  • 1Department of Radiology, Mayo Clinic Arizona, Scottsdale, Arizona; and.

Journal of Nuclear Medicine Technology
|February 1, 2019
PubMed

Insights

Technetium-99m labeled red blood cell scintigraphy aids in diagnosing active gastrointestinal bleeding. Recognizing continuous-flow left ventricular assist devices on these scans can improve diagnosis of this common complication in heart failure patients.

Area of Science:

  • Cardiology
  • Nuclear Medicine
  • Gastroenterology

Background:

  • Continuous-flow left ventricular assist devices (CF-LVADs) are a primary treatment for advanced heart failure.
  • Gastrointestinal (GI) bleeding is a frequent complication in patients with CF-LVADs.
  • 99mTc-tagged red blood cell scintigraphy is a key diagnostic tool for active GI bleeding.

Observation:

  • CF-LVADs present characteristic imaging features on scintigraphic studies.
  • These features can be mistaken for sources of GI bleeding.

Findings:

  • Specific scintigraphic patterns associated with CF-LVADs have been identified.
  • Distinguishing these patterns from actual GI bleeding is crucial for accurate diagnosis.

Implications:

  • Enhanced recognition of CF-LVAD imaging findings can prevent misdiagnosis of GI bleeding.
  • Improved diagnostic accuracy can lead to more appropriate patient management and treatment strategies.
  • This knowledge is vital for clinicians managing heart failure patients with CF-LVADs.

Keywords:
99mTc red blood cell scintigraphygastrointestinal bleedingleft ventricular assist device

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