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Updated: Jun 7, 2026

Cardiac Stress Test Induced by Dobutamine and Monitored by Cardiac Catheterization in Mice
Published on: February 10, 2013
Left ventricular outflow tract and mid-cavity obstruction may cause false-positive dobutamine stress echocardiograms
Manish B Jhawar1, Sudarshan Balla, Martin A Alpert
1Department of Internal Medicine, Division of Cardiovascular Medicine, University of Missouri School of Medicine, Columbia, MO 65212, USA.
Abstract:
Left ventricular (LV) outflow tract obstruction (LVOTO) occurs in up to 20% of patients undergoing dobutamine stress echocardiography (DSE). Mid-cavity LV obstruction occurs less commonly during DSE. LV regional wall motion abnormalities during DSE may occur despite normal coronaries due to hypertensive blood pressure response and takotsubo stress cardiomyopathy. We describe herein two cases of LVOTO and one case of mid-cavity LV obstruction during DSE associated with transient apical hypokinesis.
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