Key result
Noninvasive pacemaker stress echocardiography identified a flat-downsloping force-frequency relation in 63.2% of patients with cardiac disease versus 0% of normal controls (p<0.01).
Why the study?
Does noninvasive pacemaker stress echocardiography allow for the assessment of left ventricular contractility in patients with permanent pacemakers?
Population
26 patients with a permanent pacemaker, mean age 69+/-11 years, 21 men and 5 women.
Design
Cross-sectional
Authors
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May enable noninvasive LV contractility assessment in pacemaker patients; extends force-frequency evaluation but leaves open clinical utility.
Observational (n=26)
Does noninvasive pacemaker stress echocardiography allow for the assessment of left ventricular contractility in patients with permanent pacemakers?
Absolute Event Rate: 63.2% vs 0%
p-value: p=<0.01
Noninvasive pacemaker stress echocardiography is a feasible method to assess left ventricular contractility by estimating the force-frequency relation in patients with permanent pacemakers.
Bombardini et al. (2004) conducted an observational in Permanent pacemaker (n=26). Transthoracic stress pacing echocardiography vs. Normal cardiac function was evaluated on Flat-downsloping force-frequency relation (FFR) (p=<0.01). Noninvasive pacemaker stress echocardiography identified a flat-downsloping force-frequency relation in 63.2% of patients with cardiac disease versus 0% of normal controls (p<0.01).
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