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[Stress echography and pacemakers].

¹Service de cardiologie, clinique Saint-Augustin, Bordeaux.

Archives Des Maladies Du Coeur Et Des Vaisseaux

|February 24, 2005

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Conventional stress echocardiography is effective for diagnosing myocardial ischemia in pacemaker patients. This method is well-tolerated and aids in identifying ischemia, even with pacing-induced asynchrony.

Area of Science:

Cardiology
Diagnostic Imaging
Electrophysiology

Background:

Investigating myocardial ischemia in pacemaker patients presents challenges.
Limited data exist on stress echocardiography's utility in this population.

Purpose of the Study:

To evaluate the effectiveness of conventional dobutamine/atropine stress echocardiography in pacemaker patients.
To assess the impact of ventricular pacing on test interpretation.

Main Methods:

100 stress echocardiograms were performed on 113 consecutive ventricular-paced patients.
Contraction asynchrony related to pacing was analyzed for its interpretative impact.

Main Results:

The test was contributory in 87% of cases.

Related Experiment Videos

Pacing-induced asynchrony hindered interpretation in only 11% of cases.

Dobutamine/atropine induced spontaneous rhythm in 54%, resolving asynchrony and aiding interpretation.

Conclusions:

Conventional stress echocardiography is a suitable, well-tolerated method for non-invasive myocardial ischemia investigation in pacemaker patients.
The technique proves valuable despite potential pacing-related artifacts.