Key result
Programmed atrial stimulation caused a progressive decrease in voltage, splitting, and disappearance of the His deflection in 5 of 95 patients, indicating a conduction defect within the His bundle.
Why the study?
Does programmed atrial stimulation cause changes in the His bundle deflection in patients with AV conduction disturbances?
Population
95 patients having intracardiac conduction studies because of AV conduction disturbances, with a specific…
Design
Case_series
Authors
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May complicate AV block localization on EPS; leaves open its prevalence and clinical relevance.
Observational (n=95)
Does programmed atrial stimulation cause changes in the His bundle deflection in patients with AV conduction disturbances?
The disappearance or splitting of the His deflection during atrial stimulation indicates a conduction disturbance within the His bundle, which can make precise localization of AV block difficult during electrophysiological studies.
Csapo et al. (1978) conducted an observational in AV conduction disturbances (n=95). Programmed atrial stimulation was evaluated on Change in voltage and character of the His bundle deflection. Programmed atrial stimulation caused a progressive decrease in voltage, splitting, and disappearance of the His deflection in 5 of 95 patients, indicating a conduction defect within the His bundle.
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