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Early conduction disorders following percutaneous aortic valve replacement.

Valeria Calvi¹, Euglena Puzzangara, Giusi Paola Pruiti

¹Cardiology Department, Ferrarotto Hospital, University of Catania, Catania, Italy. valcalvi@unict.it

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|March 3, 2009

Summary

Percutaneous aortic valve replacement (PAVR) leads to a high incidence of early conduction disorders. A significant percentage of patients required permanent pacemaker implantation following the procedure.

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Area of Science:

Cardiology
Interventional Cardiology
Cardiac Surgery

Background:

Severe aortic stenosis often necessitates alternative treatments for elderly or comorbid patients.
Percutaneous aortic valve replacement (PAVR) is emerging as a viable option.
Limited data exists on early conduction disorders (CD) post-PAVR.

Purpose of the Study:

To investigate the incidence and characteristics of early conduction disorders (CD) after PAVR.
To determine the rate of permanent pacemaker (PPM) implantation following PAVR.

Main Methods:

Retrospective analysis of 30 patients undergoing PAVR between June 2007 and June 2008.
Diagnosis of CD using 12-lead or 24-hour Holter electrocardiogram.
Assessment of the need for PPM implantation.

Main Results:

A high incidence of new postoperative CD (68.0%) was observed.
Left bundle branch block was the most frequent CD (45.8%).
Complete atrioventricular block requiring PPM implantation occurred in 20% of patients.

Conclusions:

PAVR is associated with a higher incidence of early CD and PPM implantation than typically reported for surgical valve replacement.
Further large-scale prospective studies are needed to confirm clinical significance and long-term outcomes.