Abstract
Purpose
This study examines the contributions of known predictors of survival and quality of life (QOL) to 1-year survival in ICD recipients.
Methods
This study used the data set from the antiarrhythmia versus implanted defibrillator (AVID) controlled clinical trial conducted by the National Institutes of Health, National Heart, Lung, and Blood Institute. The 507 patients randomly assigned to the ICD treatment were included in the analysis. Patients were mostly male (78.3%), with mean age of 64.85 ± 10.81 and mean left ventricular ejection fraction of 32.2 ± 13.45%. QOL was measured with the medical outcomes study 36-item short form health survey (SF-36) and quality of life index-cardiac version (QLI-CV). Data were analyzed with descriptive statistics and logistic regression.
Results
Fifty-four (10.6%) patients died in the first year after ICD implantation. Angiotensin-converting enzyme inhibitor (ACE) medication, age, and QLI-CV were significant independent predictors of 1-year survival. The odds of survival of a younger patient with ACE medication and good QOL were approximately three times (OR = 3.96) greater than for an older patient, without ACE medication and with poor QOL.
Conclusion
Quality of life is an important factor predicting 1-year survival in patients with ICDs. ACE medication and younger age also predict 1-year survival independent of QOL and each other.
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Abbreviations
- ACE:
-
Angiotensin-converting enzyme inhibitor
- AVID:
-
Antiarrhythmia Versus Implanted Defibrillator Study
- CABG:
-
Coronary artery bypass graft
- EF:
-
Left ventricular ejection fraction
- HF:
-
Heart failure
- ICD:
-
Implantable cardioverter defibrillator.
- MCS:
-
Mental component summary score from the SF-36
- NYHA:
-
New York Heart Association
- PCS:
-
Physical component summary score from the SF-36
- QOL:
-
Quality of life
- QLI-CV:
-
Quality of life index-cardiac version
- SCD:
-
Sudden cardiac death
- SF-36:
-
Medical outcomes study 36-item short form health survey
- VF:
-
Ventricular fibrillation
- VT:
-
Ventricular tachycardia
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Acknowledgments
The antiarrhythmia versus implantable defibrillators (AVID) is conducted and supported by the NHLBI in collaboration with the AVID Study Investigators. This manuscript was prepared using a limited access data set obtained from the NHLBI and does not necessarily reflect the opinions or views of the AVID or the NHLBI.
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Kao, CW., Friedmann, E. & Thomas, S.A. Quality of life predicts one-year survival in patients with implantable cardioverter defibrillators. Qual Life Res 19, 307–315 (2010). https://doi.org/10.1007/s11136-010-9596-6
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DOI: https://doi.org/10.1007/s11136-010-9596-6