Inappropriate Implantable Cardioverter-Defibrillation Detection of Ventricular Fibrillation Induced by Transcutaneous...

Area of Science:

• Cardiology
• Biomedical Engineering
• Medical Device Safety

Background:

• Implantable cardioverter-defibrillators (ICDs) are crucial for managing life-threatening arrhythmias.
• Transcutaneous electrical nerve stimulation (TENS) devices are commonly used for pain management.

Observation:

• Two cases are presented where TENS device use interfered with ICD function.
• Electromagnetic interference (EMI) from a TENS device was misinterpreted by the ICD as ventricular fibrillation.
• The TENS device used was DR-HO'S® pain therapy system.

Findings:

• In one case, EMI caused inappropriate anti-tachycardia pacing and shocks.
• In another case, the EMI was of short duration and did not trigger ICD therapy.
• Patients were advised to discontinue TENS device use at home.

Implications:

• Increased clinical awareness of potential EMI between TENS devices and ICDs is essential.
• This interaction can lead to dangerous inappropriate ICD therapies.
• Further research may be needed to establish safety guidelines for co-use of these devices.