What is the role of imaging studies in the workup of calcium channel blocker (CCB) toxicity?

Updated: Jan 04, 2021
  • Author: B Zane Horowitz, MD, FACMT; Chief Editor: Michael A Miller, MD  more...
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A chest radiograph may be helpful to determine heart size and the presence or absence of congestive heart failure. In patients with congestive heart failure, aggressive fluid boluses to treat hypotension may exacerbate heart failure or cause acute pulmonary edema.

Cardiac echocardiography may be needed to help distinguish causes of refractory hypotension from vasodilation versus cardiac pump failure.

If bowel obstruction is suspected, abdominal radiography is recommended. Color-flow vascular ultrasonography of the intra-abdominal arterial supply may confirm bowel infarction.

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