February 17, 2020Journal of Cardiovascular Electrophysiology
The 2-year incidence of AT/AF diagnosis was significantly higher in the ICD DX group compared to the ICD VR group (11.4% vs 3.6%; adjusted HR 3.85, 95% CI 1.58-9.41, P = .003).
Why the study?
Atrial tachycardia/fibrillation episodes are common in ICD recipients and can be undetected by standard single-chamber devices, prompting investigation into whether a single-lead ICD with an atrial dipole improves AT/AF diagnosis and management.
Does a single-lead ICD with an atrial dipole improve the diagnosis of new-onset atrial arrhythmias compared to a standard single-chamber ICD in patients without a history of atrial arrhythmias?
Comparison
Single-lead ICD with an atrial dipole (ICD DX) vs standard ICD (ICD VR)
Design
Registry-based cohort study
Follow-up
Median 27 months
Authors
Discussion
Loading...
Member takes
Overview
May increase new atrial arrhythmia detection with dipole single-lead ICDs without raising anticoagulation starts; leaves open effects on outcomes.
Structured PICO
Does a single-lead ICD with an atrial dipole improve the diagnosis of new-onset atrial arrhythmias compared to a standard single-chamber ICD in patients without a history of atrial arrhythmias?
P
Population
376 patients without a history of atrial tachycardia/fibrillation (AT/AF) implanted with an implantable cardioverter-defibrillator (ICD) for standard indications from the THINGS registry.
I
Intervention
Single-lead ICD with an atrial dipole (ICD DX)
C
Comparator
Standard single-chamber ICD (ICD VR)
O
Outcome
Diagnosis of new-onset atrial tachycardia/fibrillation (AT/AF)
In patients receiving a single-chamber ICD, a device with an atrial dipole significantly increased the detection of new-onset atrial arrhythmias compared to a standard device, though it did not significantly increase the initiation of oral anticoagulation.
Cite This Study
Biffi et al. (2020) studied this question.