Cor Vasa 2018, 60(5):e472-e474 | DOI: 10.1016/j.crvasa.2017.05.016
An anomalous case of S-ICD malfunctioning: A big trouble or a soap bubble?
- Department of Clinical and Experimental Medicine, Cardiology Unit, University of Messina, Italy
12 h after the implant of a S-ICD the patient accused an inappropriate shock due to noise oversensing. ICD interrogation showed undersensing of ventricular signals on primary vector and significative noise on alternative vector. Surprisingly, 2 days full recovery of sensing of primary vector was observed. Trapped air was likely to be the cause of malfunctioning.
Keywords: Air trapping; Inappropriate shocks; Noise; Oversensing; Subcutaneous ICD
Received: April 29, 2017; Revised: May 21, 2017; Accepted: May 29, 2017; Published: October 1, 2018 Show citation
References
- V. Essebag, J. Champagne, D.H. Birnie, et al., Nonphysiologic noise early after defibrillator implantation in Canada: incidence and implications: a report from the Canadian Heart Rhythm Society Device Committee, Heart Rhythm 9 (2012) 378-382.
Go to original source... 
Go to PubMed... - D. Wilson, A. Yue, P.R. Roberts, J.M. Morgan, Oversensing and shock delivery in the S-ICD: five shocks two mechanisms, Pacing and Clinical Electrophysiology 38 (2015) 1009-1013. Go to original source... Go to PubMed...
- S.C. Yap, R. Bhagwandien, T. Szili-Torok, D.A.M.J. Theuns, Air entrapment causing early inappropriate shocks in a patient with a subcutaneous cardioverter-defibrillator, HeartRhythm Case Reports 1 (2015) 156-158. Go to original source... Go to PubMed...
- M.M. Zipse, W.H. Sauer, P.D. Varosy, et al., Inappropriate shocks due to subcutaneous air in a patient with a subcutaneous cardiac defibrillator, Circulation: Arrhythmia and Electrophysiology 7 (2014) 768-770. Go to original source... Go to PubMed...