Why the study?
Does temporary right ventricular pacing from mid-septum or outflow tract sites improve echocardiographic indices of cardiac function compared to apical pacing in patients scheduled for a permanent pacemaker?
Population
22 patients scheduled for a permanent pacemaker
Comparison
Temporary right ventricular pacing from… vs Temporary right ventricular pacing from the…
Design
Cohort
Follow-up
Temporary (during procedure)
Key result
Temporary right ventricular pacing at the mid-septum or outflow tract improved left ventricular ejection fraction compared with apical pacing (52±5% and 54±6% vs 48±5%, P<0.01 for both).
Authors
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Should not yet change permanent pacemaker practice; leaves open whether non-apical sites improve long-term outcomes.
Does temporary right ventricular pacing from mid-septum or outflow tract sites improve echocardiographic indices of cardiac function compared to apical pacing in patients scheduled for a permanent pacemaker?
Absolute Event Rate: 52% vs 48%
p-value: p=<0.01
Right ventricular pacing at the mid-septum or outflow tract preserves left ventricular systolic function, reduces dyssynchrony, and narrows QRS duration compared to traditional apical pacing.
Alhous et al. (2011) studied Patients scheduled for a permanent pacemaker (n=22). Temporary right ventricular pacing at mid-septum or outflow tract vs. Right ventricular apical pacing was evaluated on Left ventricular ejection fraction (p=<0.01). Temporary right ventricular pacing at the mid-septum or outflow tract improved left ventricular ejection fraction compared with apical pacing (52±5% and 54±6% vs 48±5%, P<0.01 for both).
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