Why the study?
Does higher transthoracic impedance reduce electrical cardioversion success in patients with atrial fibrillation or flutter?
Population
703 patients (593 with atrial fibrillation, 110 with atrial flutter) undergoing electrical cardioversion
Comparison
Higher transthoracic impedance during electrical… vs Lower transthoracic impedance (TTI)
Design
Cohort, Blinded outcome adjudication (by 2 blinded cardiac electrophysiologists)
Authors
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Higher TTI linked to lower biphasic ECV success; leaves open whether impedance-guided protocols improve outcomes.
Does higher transthoracic impedance reduce electrical cardioversion success in patients with atrial fibrillation or flutter?
Higher transthoracic impedance remains a significant predictor of electrical cardioversion failure in patients with atrial fibrillation, despite the use of contemporary biphasic defibrillators.
Sadek et al. (2018) studied this question.
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