Inappropriate ICD Shocks Due to AV Nodal Reentrant Tachycardia
Author Information
Author(s): Prasad Subramanya MD, Pillarisetti Jayasree MD, Vanga Subbareddy MD, PhD, Lakkireddy Dhanunjaya MD
Primary Institution: Bloch Heart Rhythm Center, Mid America Cardiology @ University of Kansas Hospital
Hypothesis
Can inappropriate shocks from an ICD in a patient with ARVD be attributed to AVNRT?
Conclusion
The study found that inappropriate shocks from an ICD can occur due to AVNRT in patients with ARVD, and an EP study may be necessary for accurate diagnosis.
Supporting Evidence
- The patient had multiple inappropriate shocks for AVNRT despite having an ICD.
- An EP study was necessary to accurately diagnose the arrhythmia responsible for the shocks.
- Modern ICDs have sophisticated algorithms but can still misdiagnose atrial arrhythmias.
Takeaway
Sometimes, a heart device can mistakenly think there's a problem and give shocks when it's not needed. A special test can help figure out what's really going on.
Methodology
The case involved an electrophysiological study to differentiate between SVT and VT in a patient with ARVD who received inappropriate ICD shocks.
Limitations
The study is based on a single case report, limiting generalizability.
Participant Demographics
A 47-year-old male with a history of polysubstance abuse and coronary artery disease.
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