Inappropriate interventions during the long-term follow-up of patients with an implantable defibrillator

Stuber, Thomas; Eigenmann, Christa; Delacrétaz, Etienne (2007). Inappropriate interventions during the long-term follow-up of patients with an implantable defibrillator. Swiss medical weekly, 137(15-16), pp. 228-33. Muttenz: EMH Schweizerischer Ärzteverlag

Full text not available from this repository. (Request a copy)

QUESTIONS UNDER STUDY: In patients with an implantable defibrillator (ICD), inappropriate ICD interventions alter the quality of life, may cause hospitalisations and limit cost-effectiveness. The aim of the study was to determine the incidence and causes of inappropriate ICD interventions, and to identify patients at risk. METHODS: For this observational longitudinal study, consecutive patients undergoing ICD implantation at the University Hospital of Berne were included in a registry. All stored electrograms of episodes triggering ICD interventions were systematically reviewed and analysed to determine whether ICD interventions were appropriate or inappropriate. Inappropriate ICD interventions were classified according to their cause, and risk factors were sought. RESULTS: 214 consecutive patients were followed during a median time of 2.7 years (3.7 years IQR, 698 patient years). 81 inappropriate ICD interventions occurred in 58 patients (27%). Factors triggering inappropriate ICD interventions included atrial fibrillation and flutter (n = 35, 44%), sinus tachycardia (n = 26, 32%), lead fracture (n = 12), recurrent self-terminating ventricular tachycardia (n = 5), double-counting due to T-wave oversensing (n = 3). The only identifiable risk factor for inappropriate ICD interventions was sustained ventricular tachycardia as index arrhythmia. CONCLUSIONS: An important proportion of ICD patients suffer inappropriate ICD interventions that are most commonly due to supraventricular arrhythmias. Patients with ventricular tachycardia prior to ICD implantation are at higher risk of inappropriate ICD interventions. Interventions aiming at decreasing the risk of inappropriate ICD interventions should be considered in these patients.

Item Type:

Journal Article (Original Article)

Division/Institute:

04 Faculty of Medicine > Department of Cardiovascular Disorders (DHGE) > Clinic of Cardiology

UniBE Contributor:

Eigenmann, Christina and Delacrétaz, Etienne

ISSN:

1424-7860

ISBN:

17525878

Publisher:

EMH Schweizerischer Ärzteverlag

Language:

English

Submitter:

Factscience Import

Date Deposited:

04 Oct 2013 14:54

Last Modified:

04 May 2014 23:16

PubMed ID:

17525878

Web of Science ID:

000246603800004

URI:

https://boris.unibe.ch/id/eprint/23226 (FactScience: 40647)

Actions (login required)

Edit item Edit item
Provide Feedback