Key result
Acute right ventricular apical and outflow tract pacing comparably deteriorated wall motion score and longitudinal LV strain compared to baseline AAI pacing in 14 patients.
Why the study?
Does acute right ventricular apical or outflow tract pacing worsen echocardiographic left ventricular function compared to baseline in patients with normal LV function?
Population
14 patients with a DDD-pacemaker for sick sinus syndrome, normal left ventricular function, normal…
Comparison
Acute right ventricular apical or right… vs Baseline intrinsic ventricular conduction
Design
Cross-sectional
Follow-up
acute
Authors
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Acute RV pacing may impair LV strain even acutely; leaves open whether site or chronic effects alter outcomes in preserved function.
Cross-Sectional (n=14)
Does acute right ventricular apical or outflow tract pacing worsen echocardiographic left ventricular function compared to baseline in patients with normal LV function?
Acute right ventricular pacing, whether apical or outflow tract, comparably worsens echocardiographic parameters of left ventricular function in patients with normal baseline function.
Cate et al. (2008) conducted a cross-sectional in Sick sinus syndrome with normal left ventricular function (n=14). Acute right ventricular apical (RVA) and right ventricular outflow tract (RVOT) pacing vs. Baseline AAI pacing was evaluated on Wall motion score, longitudinal LV strain, and electromechanical delay. Acute right ventricular apical and outflow tract pacing comparably deteriorated wall motion score and longitudinal LV strain compared to baseline AAI pacing in 14 patients.
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