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Updated: Aug 9, 2026

A Simplified Stepwise Approach to Echo Guidance during Percutaneous Mitral Valve Repair
Published on: October 16, 2021
[Congenital mitral stenosis. Experience in 1991-2001]
C Alva1, B González, C Meléndez
1Hospital de Cardiología, Centro Médico Nacional Siglo XXI, Instituto Mexicano del Seguro Social. alval@prodigy.net.mx
Objective:
To describe ten years of experience with congenital mitral stenosis.
Method:
All cases with congenital mitral stenosis from January 1991 to 2001 were analized.
Results:
16 patients with congenital mitral stenosis were found, mean age 3 +/- 3.08 years. TYPES OF OBSTRUCTIONS: Mitral commisures combined with tendinous cords fusion (45%), parachute mitral valve 37%, supravalvar mitral ring in one, fusion between papillary muscle and leaflets in one, and double mitral orifice in one. Hemodynamic (in mmHg) findings: wedge pressure 18.4 +/- 4, pulmonary artery systolic 61 +/- 21, diastolic 34 +/- 15, mean 47 +/- 18 mmHg, mean transvalvar gradient (MTG) 12.9 +/- 7.3, PRU 5.5 +/- 3.8. Four patients received medical treatment. Surgical results: Six patients underwent mitral repair, and four were subjected to mitral valve replacement (two with previous mitral repair). Global mortality was 2 (12.5%). Follow-up was 3.5 +/- 3 years. There was a significant difference when the initial MTG 22.6 +/- 11.5 mmHg before surgical repair was compared with the final MTG 4.75 +/- 1.5 (P < 0.05), also when initial MTG 12 +/- 2.3 before mitral valve replacement was compared with the final MTG 6 +/- 1.15 mmHg (P < 0.05).
Conclusion:
Most patients are candidates for mitral surgical repair, however at mid term one third will require mitral valve replacement.
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