Quantification of rheumatic mitral stenosis severity with three-dimensional vena contracta area

Area of Science:

• Cardiology
• Medical Imaging
• Echocardiography

Background:

• Rheumatic mitral stenosis (MS) is a significant health concern, particularly in developing nations.
• Accurate assessment of mitral valve area (MVA) is crucial for determining the optimal timing for intervention in MS.
• Traditional assessment relies heavily on Two-dimensional (2D) echocardiography, but Three-dimensional (3D) echocardiography is increasingly utilized.

Purpose of the Study:

• To evaluate the utility of 3D echocardiography-derived mitral valve vena contracta area (VCA) in predicting the severity of rheumatic MS.
• To compare the 3D VCA measurements with 3D planimetry-derived MVA in rheumatic MS patients.

Main Methods:

• A study was conducted on 40 patients diagnosed with rheumatic MS (mild, moderate, or severe) using conventional 2D echocardiography methods.
• 3D transesophageal echocardiography (TEE) was performed to measure full-volume mitral valve VCA in end-diastole.
• 3D TEE full-volume and 3D zoom MVA planimetry were also measured at end-diastole.

Main Results:

• A strong positive correlation was observed between 3D TEE VCA and 3D TEE MVA (r = 0.82, P < 0.001).
• The study included patients with rheumatic MS, with a mean age of 51.1 ± 11.6 years, predominantly females (31).

Conclusions:

• The findings indicate that 3D TEE mitral valve VCA is a valuable parameter for assessing the severity of rheumatic MS.
• 3D VCA can serve as an additional tool to complement existing methods for rheumatic MS severity detection.