Journal article
Phantom shocks unmasked: clinical data and proposed mechanism of memory reactivation of past traumatic shocks in patients with implantable cardioverter defibrillators
Journal of interventional cardiac electrophysiology, Vol.34(2), pp.205-213
08/2012
DOI: 10.1007/s10840-011-9640-7
PMID: 22183617
Abstract
Implantable cardioverter defibrillators (ICD), despite an unequivocal clinical benefit, are known to have a complex psychosocial impact on the patients. ICD shocks and the resultant psychobiological changes are known to contribute to increased levels of anxiety, depression, and post-shock stress symptoms in these patients. Phantom shock is a patient-reported perception of an ICD shock in the absence of any actual shock; however, its pathophysiological understanding is poor.A retrospective chart review of the University hospital ICD patients’ database from June 2006 to April 2010 was conducted. A total of 38 patients with documented phantom shocks as cases and 76 age- and sex-matched patients with no phantom shocks as controls were selected from the database. Patient characteristics were analyzed for their potential association with the occurrence of phantom shocks.Phantom shock patients had higher prevalence of documented depression (31.6%), anxiety (23.7%), and cocaine use (42.1%). Additionally, patients who had previous ICD shock storms were more likely to have phantom shocks (39.5%; p = 0.001). More importantly, no phantom shocks were reported in patients who did not receive defibrillation threshold testing or past ICD shock storms.Phantom shocks are primarily observed in ICD patients who had prior exposure to traumatic device shocks and are more common in patients with a history of depression, anxiety, or substance abuse. A pathophysiological mechanism is proposed as a guide to potential prevention.
Details
- Title: Subtitle
- Phantom shocks unmasked: clinical data and proposed mechanism of memory reactivation of past traumatic shocks in patients with implantable cardioverter defibrillators
- Creators
- Sony Jacob - Harper University Hospital Wayne State University 3990 John R Detroit MI 48201 USASidakpal S Panaich - Department of Internal Medicine Wayne State University School of Medicine Detroit MI USASandip K Zalawadiya - Department of Internal Medicine Wayne State University School of Medicine Detroit MI USAGeorge McKelvey - Department of Anesthesiology Wayne State University School of Medicine Detroit MI USAGeorge Abraham - Department of Clinical Psychiatry Bryn Mawr Hospital Philadelphia PA USARajeev Aravindhakshan - Division of Cardiology/Electrophysiology Wayne State University School of Medicine Detroit MI USASamuel F Sears - Department of Cardiovascular Sciences East Carolina University Greenville NC USAJamie B Conti - Division of Cardiology/Electrophysiology, Department of Internal Medicine University of Florida Gainesville FL USAH Michael Marsh - Department of Anesthesiology Wayne State University School of Medicine Detroit MI USA
- Resource Type
- Journal article
- Publication Details
- Journal of interventional cardiac electrophysiology, Vol.34(2), pp.205-213
- DOI
- 10.1007/s10840-011-9640-7
- PMID
- 22183617
- NLM abbreviation
- J Interv Card Electrophysiol
- ISSN
- 1383-875X
- eISSN
- 1572-8595
- Publisher
- Springer US
- Language
- English
- Date published
- 08/2012
- Academic Unit
- Cardiovascular Medicine; Internal Medicine
- Record Identifier
- 9984094534002771
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