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(Circulation. 1997;95:946-950.)
© 1997 American Heart Association, Inc.

Articles

Long-term Follow-up of Cardioverter-Defibrillator Implanted Under Conscious Sedation in Prepectoral Subfascial Position

Antonio Pacifico, MD; Kevin R. Wheelan, MD; Nadim Nasir, Jr, MD; Peter J. Wells, MD; Timothy K. Doyle, MD; Susan A. Johnson, RN; Philip D. Henry, MD

the Texas Arrhythmia Institute, Houston (A.P., N.N., T.K.D., S.A.J., P.D.H.) and Baylor University Hospital, Dallas (K.R.W., P.J.W.), Tex.

Correspondence to Antonio Pacifico, MD, Texas Arrhythmia Institute, 6550 Fannin, Suite 620, Houston, TX 77030.

Background Implantable cardioverter-defibrillators (ICDs) with intravenous electrode systems and downsized generators can be implanted by use of operative techniques similar to those employed for the insertion of permanent pacemakers. However, the safety, efficacy, and long-term follow-up of simplified implantation procedures remain to be evaluated. This report is a prospective long-term evaluation of nonselected patients receiving ICDs in the prepectoral subfascial position under conscious sedation.

Methods and Results Clinical characteristics of the 231 consecutive patients included a mean age of 63 years, a male-to-female ratio of 6.4, a left ventricular ejection fraction of 0.34, a mild-to-moderate heart failure in 91%, coronary artery disease in 84%, and a history of aborted sudden cardiac death or refractory ventricular tachyarrhythmias. Insertion of transvenous leads and prepectoral subfascial ICD implantation were performed in electrophysiology laboratories under local anesthesia and conscious sedation with intravenous midazolam and propofol. Successful implantation in all patients (operation time, 80±32 minutes, mean±SD) irrespective of body size and skin thickness was free of major complications, including need for emergency intubation. After surgery, 1 pocket hematoma, 1 seroma, and 1 pneumothorax required treatment. There was no operative or first-month mortality. During long-term follow-up averaging 453±296 days, six leads required repositioning, but pocket erosions or infections did not occur. First-year total survival was 97%.

Conclusions Implantation under conscious sedation of ICDs in the prepectoral subfascial position is a safe and effective procedure with low operative and postoperative morbidity and favorable long-term outcome.

Key Words: tachyarrhythmia • defibrillation • death, sudden

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