November 1, 2000Pacing and Clinical Electrophysiology
Determination of Pacing Capture in Implantable Defibrillators: Benefit of Evoked Response Detection Using RV Coil to Can Vector
Key result
Evoked response detection using the RV coil-to-can vector discriminates pacing capture with ~100% specificity.
- n=20
Why the study?
Automatic detection of capture in ICDs is useful for ensuring normal pacing function and lead integrity but can be difficult due to postpace polarization.
Does evoked response detection using the RV coil to can vector accurately discriminate between capture and noncapture in patients with ICDs?
Population
20 patients undergoing ICD implantation or replacement
Comparison
Evoked response detection using RV coil to can vector vs no detection
Design
Prospective observational study
Authors
Discussion
Loading...
Member takes
Implication
May enable automatic threshold detection in ICDs without special waveforms; hypothesis-generating and requires randomized validation before practice change.
Study Design
Type
Observational (n=20)
Structured PICO
Does evoked response detection using the RV coil to can vector accurately discriminate between capture and noncapture in patients with ICDs?
P
Population
20 patients undergoing ICD implantation or replacement whose ventricular-paced responses were prospectively recorded.
E
Exposure
Evoked response detection using the RV coil to can vector with standard pacing waveforms
O
Outcome
Discrimination between capture and noncapture-paced responses (sensitivity and specificity of the detector)surrogate
Paced evoked responses can be accurately detected in ICDs using the RV coil to can vector with standard pacing waveforms, which could enable automatic pacing threshold detection without requiring special polarization-reducing waveforms.
Cite This Study
Splett et al. (2000) conducted an observational in Patients undergoing ICD implantation or replacement (n=20). Evoked response detection using RV coil to can vector was evaluated on Discrimination between capture and noncapture-paced responses. Evoked response detection using the RV coil to can vector discriminated between capture and noncapture-paced responses with 99.9% sensitivity and 100% specificity.