Key result
Pacing from the right atrial appendage increased cardiac output by 10-15% compared with stimulation from the right atrial free wall (P < 0.05).
Why the study?
Does pacing from the right atrial appendage improve left ventricular filling and cardiac output compared to the right atrial free wall in patients undergoing DDD pacemaker implantation?
Population
12 consecutive patients (mean age 67 +/- 7 years) who underwent DDD pacemaker implantation
Comparison
Pacing from the right atrial appendage at 85… vs Pacing from the right atrial free wall at 85…
Design
Cross-sectional
Authors
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May favor right atrial appendage pacing in DDD implants for higher output; hypothesis-generating and requires randomized outcome trials.
Does pacing from the right atrial appendage improve left ventricular filling and cardiac output compared to the right atrial free wall in patients undergoing DDD pacemaker implantation?
Absolute Event Rate: 2.4% vs 2.1%
p-value: p=< 0.05
Pacing from the right atrial appendage provides superior left ventricular filling and a 10-15% higher cardiac output compared to pacing from the right atrial free wall during DDD pacing.
VANCAMPEN et al. (2001) studied DDD pacemaker implantation (n=12). Pacing from the right atrial appendage (RAA) vs. Pacing from the right atrial free wall was evaluated on Cardiac index at 85 bpm (l. min-1 m-2) (p=< 0.05). Pacing from the right atrial appendage increased cardiac output by 10-15% compared with stimulation from the right atrial free wall (P < 0.05).
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