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Cardiac events in patients with negative maximal versus negative submaximal dobutamine echocardiograms undergoing noncardiac surgery

Importance of resting wall motion abnormalities

^* Department of Cardiovascular Medicine, Lahey Clinic, Burlington, Massachusetts, USA

View larger version (13K): [in a new window]   Figure 1 Cardiac event rates (myocardial infarction or death) in patients with negative versus positive dobutamine stress echocardiography. Those without inducible ischemia had significantly fewer cardiac events.

View larger version (14K): [in a new window]   Figure 2 Cardiac event rates among the 397 patients without inducible ischemia. The left panel shows events according to whether target heart rate was achieved during dobutamine stress echocardiography (DSE) (Max-DSE) or not (Sub-DSE). Event rates were low in both subgroups. The right panel shows events according to whether patients had normal resting wall motion (Normal) or had a wall motion abnormality at rest (Fixed). Those with a fixed wall motion abnormality had significantly higher event rates. There were no events in patients with normal baseline function and no inducible ischemia.