Psychological indices and phantom shocks in patients with ICD

  • Liza A. Prudente
  • Juanita Reigle
  • Cheryl Bourguignon
  • David E. Haines
  • John P. DiMarco
Article

Abstract

Introduction

Some patients with ICDs experience the sensation of a shock in the absence of true therapy (phantom shock). We hypothesize that phantom shocks may be a manifestation of anxiety, depression or PTSD.

Methods and results

All patients over 18 years old with an ICD were eligible to enroll in the study. The first 75 subjects who agreed to participate were enrolled and divided into three groups: ICD patients with phantom shocks (n = 19); ICD patients who had actual shocks (n = 28) and ICD patients who had no shocks (n = 28). During a clinic visit a demographic questionnaire and three psychological rating scales were administered: the Spielberger State–Trait Anxiety Inventory (STAI); the Center for Epidemiologic Studies Depression Scale (CES-D) and the Posttraumatic Stress Checklist (PCL-C). No significant differences between groups were found in gender, race, age, history of MI or cardiac surgery status. Data analysis of the psychological indices using one-way ANOVA showed that the group with phantom shocks had more depression (CES-D p = 0.011) and more anxiety (STAI p = 0.010) than the other groups. Multiple comparisons of group means showed a greater percentage of clinically depressed patients in the phantom shock group than in the other groups.

Conclusion

Patients with phantom shocks are more likely to be clinically depressed and have higher levels of anxiety than other ICD patients, regardless of history of actual shocks.

Keywords

ICD Shock Phantom shock Anxiety Depression PTSD 

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Copyright information

© Springer Science + Business Media, LLC 2006

Authors and Affiliations

  • Liza A. Prudente
    • 1
  • Juanita Reigle
    • 2
  • Cheryl Bourguignon
    • 3
  • David E. Haines
    • 4
  • John P. DiMarco
    • 5
  1. 1.ElectrophysiologyUniversity of Virginia Health SystemCharlottesvilleUSA
  2. 2.Heart Failure ServiceUniversity of Virginia Health SystemCharlottesvilleUSA
  3. 3.Center for the Study of Complementary and Alternative Therapies, School of Nursing, University of VirginiaCharlottesvilleUSA
  4. 4.Heart Rhythm CenterWilliam Beaumont HospitalTroyUSA
  5. 5.Internal MedicineElectrophysiology Service at University of Virginia Health SystemCharlottesvilleUSA

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