VIENNA – One of the best ways to prevent advanced tricuspid-valve regurgitation and need for tricuspid-valve repair may be a more aggressive approach to mitral valve repair.
“If you operate on the mitral valve early, then tricuspid regurgitation does not tend to progress,” Dr. Sunil V. Mankad said at the annual meeting of the European Association of Cardiovascular Imaging. “If you wait until the mitral valve remodels and the atrium enlarges and remodels or there is pulmonary hypertension, then tricuspid regurgitation will progress,” said Dr. Mankad, a echocardiographer at the Mayo Clinic in Rochester, Minn.
Mitchel L. Zoler/Frontline Medical News
Dr. Sunil V. Mankad
Early intervention on mitral valve prolapse has other benefits as well, he said. Mitral disease causes atrial remodeling, which can then progress to atrial fibrillation, “and once that happens it’s a game changer for the patient, even if they later undergo valve repair,” because of atrial fibrillation’s long-term risks and consequences, Dr. Mankad said in an interview.
“We believe there is also subclinical left ventricular dysfunction” in patients with mitral-valve prolapse “even if their ejection fraction is normal.” Once that happens, even if the mitral valve is repaired “the heart is not normal anymore and there is subtle left ventricular dysfunction that is not captured by just looking at ejection fraction.”
To document the impact a more aggressive approach to mitral-valve repair can have on the tricuspid valve, Dr. Mankad cited a 2011 Mayo Clinic analysis of 699 patients who underwent mitral-valve repair at Mayo for severe mitral-valve prolapse and also had some amount of tricuspid regurgitation at the time of their surgery, including 115 patients (16%) with grade 3 or higher tricuspid regurgitation. One year after surgery, the severity of tricuspid regurgitation in these patients had decreased significantly overall, and throughout follow-up only one patient required surgery for tricuspid-valve repair, 4.5 years after that patient’s mitral-valve repair (J. Thoracic Cardiovasc. Surgery 2011;142:608-13).