Key result
Ectopic atrial tachycardia was associated with a significantly lower short-term scaling exponent alpha(1) (0.71) compared to sinus tachycardia (1.16) or normal sinus rhythm (1.19; P<0.001).
Why the study?
Does heart rate variability differ between ectopic atrial tachycardia and sinus tachycardia?
Population
12 patients with incessant ectopic atrial tachycardia, 12 subjects with sinus tachycardia, and 24 age- and…
Comparison
24-hour Holter recording vs Sinus tachycardia and normal sinus rhythm
Design
Cross-sectional
Follow-up
24-hour
Authors
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May aid EAT differentiation from sinus tachycardia; hypothesis-generating for altered short-term dynamics requiring prospective validation.
Observational (n=48)
Does heart rate variability differ between ectopic atrial tachycardia and sinus tachycardia?
Absolute Event Rate: 0.71% vs 1.16%
p-value: p=<0.001
Ectopic atrial pacemakers exhibit similar long-term autonomic regulation to normal pacemaker tissue but show altered, more random short-term R-R-interval dynamics.
Huikuri et al. (1999) conducted an observational in Incessant ectopic atrial tachycardia (n=48). Ectopic atrial tachycardia vs. Sinus tachycardia and normal sinus rhythm was evaluated on Short-term scaling exponent alpha(1) (p=<0.001). Ectopic atrial tachycardia was associated with a significantly lower short-term scaling exponent alpha(1) (0.71) compared to sinus tachycardia (1.16) or normal sinus rhythm (1.19; P<0.001).
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