Abstract
Bileaflet mitral valve prolapse (MVP) can be associated with malignant ventricular arrhythmias. It is unknown whether surgical correction alone of this mitral valve pathology leads to a reduction in ventricular dysrhythmias. We retrospectively analyzed 4477 patients who underwent mitral valve surgery from 1993-2013 at Mayo Clinic in Rochester, MN. Among these, eight patients with bileaflet MVP who had an internal cardioverter defibrillator (ICD) in place both pre- and post-surgery were identified. ICD interrogation records were evaluated for episodes of ventricular tachycardia (VT), ventricular fibrillation (VF), and appropriate ICD shock therapy. Of these eight patients, five had a malignant ventricular arrhythmia prior to surgery. Data was available 4.6 ± 2.9 years before versus 6.6 ± 4.2 years following surgical intervention. Among these patients, there was a reduction in VF (0.6 versus 0.14 events per-person-year pre- and post-surgery, respectively), VT (0.4 versus 0.05 events per-person-year pre- and post-surgery, respectively), and ICD shocks (0.95 versus 0.19 events per-person-year pre- and post-surgery) following mitral valve surgery. We report a series of cases where the surgical correction of bileaflet MVP alone was a...Continue Reading
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