Effect of Percutaneous Balloon Mitral Valvuloplasty on Left Atrial Appendage Function: Immediate and 6 months follow-up: A Trans esophageal Echocardiographic Study
Keywords:
CRHD (chronic rheumatic heart disease), Percutaneous mitral balloon mitral valvuloplasty (PBMV), left atrial appendage (LAAbstract
Introduction: Mitral stenosis (MS) causes structural and functional abnormalities of the left atrium (LA) and left atrial ap
pendage (LAA), and studies show that LAA performance improves within a short time after (PBMV).
Material and Methods: 25 patients with symptomatic severe MS (MVA ≤ 1.0 cm2) with NYHA class II and above who under
went successful PBMV were enrolled in this prospective observational study. All underwent standard TTE, TEE before, 3days
and 6-months after PBMV. LA dimensions were measured. Trans mitral diastolic pressure gradient and MVA by both planim
etry and pressure half-time were measured by using TTE. LAA function was evaluated by TEE. LAA flow velocities, including
peak systolic (S wave), peak early diastolic (E wave), and peak late diastolic (A wave), were measured at the outer third of LAA
by pulsed-wave Doppler, LAA tissue Doppler velocities ‘e’ LAA, ‘a’ LAA, and ‘s’ LAA respectively, were obtained.
Conclusion: The present study showed contractile dysfunction of the LAA in patients with critical MS, which significantly
improved after PBMV and at a 6-month follow-up.
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