ĐẶC ĐIỂM LÂM SÀNG, CẬN LÂM SÀNG, MỘT SỐ THÔNG SỐ HUYẾT ĐỘNG VÀ CHỨC NĂNG TRÊN SIÊU ÂM DOPPLER TIM Ở BỆNH NHÂN THAY VAN HAI LÁ CƠ HỌC TẠI BỆNH VIỆN ĐA KHOA TRUNG ƯƠNG CẦN THƠ NĂM 2021-2022

Abstract

Background: Mitral valve replacement surgery is a radical treatment solution for mitral valve disease when the disease begins to progress badly and no longer responds to medical treatment, or the lesions do not allow dilation or valve repair. Objectives: To describe clinical, paraclinical, hemodynamic, and functional parameters on cardiac doppler echocardiography in patients with mechanical mitral valve replacement at Can Tho Central General Hospital in 2021- 2022. Materials and methods: In a prospective, cross-sectional study, all patients underwent mechanical mitral valve replacement surgery at Can Tho Central General Hospital from 01/2021 to 05/2022. Results: Of 19 patients, mean age 45.3 ± 12.8; female 57.9%; NYHA 2 and 3 heart failure symptoms were 57.9% and 21%, respectively, atrial fibrillation was 57.9%. The most common lesions were mitral stenosis 42.1%, mitral stenosis 31.6%, and mitral regurgitation 26.3%, of which 52.6% had severe tricuspid regurgitation. In concurrent tricuspid valve milk, 10.5% of cases had left atrial thrombus. The left atrium was dilated 54.6 ± 13.4 mm, with an increase in pulmonary artery pressure of 48.6 ± 18.0 mmHg and a preserved ejection fraction of 59.4 ± 8.6%. After surgery, Vmax is 1.6 ± 0.8m/s, Gmax is 10.3 ± 3.1mmHg, EOA-PHT is 3.0 ± 0.6cm2. The parameters measured on ultrasound all decreased statistically. Only the right ventricular diameter did not change (p=0.095). Rate of severe tricuspid regurgitation decreased from 52.6% to 10.5%. Conclusions: Doppler echocardiography is an important tool to help decide the time of heart valve replacement surgery. In addition, it also provides information on hemodynamics and cardiac function to help evaluate and monitor the operation of mechanical heart valves.