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Year : 2013  |  Volume : 2  |  Issue : 1  |  Page : 46-49

Sex difference in clinical outcome of patients with implantable cardioverter-defibrillator

Cardiac Electrophysiology Research Center, Rajaie Cardiovascular Medical and Research Center, Tehran University of Medical Sciences, Tehran, IR Iran

Correspondence Address:
Neshat Nazari
Cardiac Electrophysiology Research Center, Rajaie Cardiovascular Medical and Research Center, Vali-Asr Ave, Niayesh Blvd, Tehran
IR Iran
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Source of Support: None, Conflict of Interest: None

DOI: 10.5812/cardiovascmed.5027

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Background: Indications for the use of the Implantable Cardioverter-Defibrillator (ICD) have been greatly expanded in recent years, but the influence of sex on the efficacy of the ICD in eligible patients has still been remained unknown. Objectives: The aim of this study was to determine the impact of sex on the effectiveness of the ICD intervention for mortality and appropriate events. Materials and Methods: This retrospective study was conducted on the outcome of the ICD therapy in 443 patients, including 341 men with a mean age of 55 ± 16 years and 102 women with a mean age of 54 ± 17 years, in our center between April 2001 and February 2007. Sex-specific cumulative probabilities of outcomes concerning mortality and appropriate ICD intervention were evaluated for the patients. Results: Among the 443 patients, enrolled in this study, the women and men had a mean left ventricular ejection fraction of 35 ± 14.8% and 30 ± 13.5%, respectively (P = 0.03). Ischemic heart disease was more frequent in the men than the women (P = 0.0001).The average follow-up period was 3 years. Test for an interaction between sex and the ICD treatment regarding total mortality was not significant (23 men and 6 women). Additionally, there was no significant difference in appropriate events between the women and men (129 men and 33 women). Conclusions: While women were significantly less likely than the men to receive the ICD therapy, no conclusive evidence could be found for the impact of sex factor on the effectiveness of the ICD intervention with respect to mortality and appropriate events.

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