CHARACTERISTICS OF RIGHT VENTRICULAR-PULMONARY ARTERIAL COUPLING BY ECHOCARDIOGRAPHY IN PATIENTS WITH MITRAL VALVE STENOSIS
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Abstract
Objectives: To study the right ventricular-pulmonary arterial coupling (RVPAC) in patients with mitral stenosis. Methods: A retrospective, prospective, descriptive, controlled study was conducted on 58 patients diagnosed with mitral stenosis and 42 individuals without cardiac disease (control group) at Military Hospital 103 from October 2022 to December 2025. Results: RVPAC in the mitral stenosis group (0.44 ± 0.20 mm/mmHg) was significantly lower than that in the control group (0.56 ± 0.19 mm/mmHg); p < 0.01. RVPAC was significantly lower in the atrial fibrillation group compared to the sinus rhythm group (0.41 ± 0.14 vs. 0.55 ± 0.29 mm/mmHg; p < 0.05). RVPAC was related to the degree of secondary tricuspid regurgitation. RVPAC was significantly lower in the moderate and severe tricuspid regurgitation groups compared to the mild tricuspid regurgitation group (0.39 ± 0.17 vs. 0.55 ± 0.21 mm/mmHg; p < 0.01). No association was found between RVPAC and the degree of heart failure (p > 0.05). Conclusion: RVPAC was lower in patients with mitral stenosis compared to the control group. RVPAC was related to atrial fibrillation and secondary tricuspid regurgitation. The group with atrial fibrillation had lower RVPAC than the group with sinus rhythm. The more severe the tricuspid regurgitation, the lower the RVPAC.
Keywords
Mitral valve stenosis, Tricuspid regurgitation, Right ventricular-pulmonary artery coupling
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References
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