NGHIÊN CỨU MỐI LIÊN QUAN GIỮA CHỈ SỐ TƯƠNG HỢP THẤT TRÁI - ĐỘNG MẠCH VỚI MỘT SỐ CHỈ SỐ SIÊU ÂM TIM Ở BỆNH NHÂN NHỒI MÁU CƠ TIM CẤP

Abstract

Objectives: To study the relationship between VAC index and some echocardiographic indexes in patients with acute MI. Methods: A cross-sectional descriptive study on 60 acute MI patients at Cardiovascular Center – 103 Military Hospital from 12/2021-08/2022. The left ventricular–arterial coupling index (VAC) was calculated by the Chen’s single beat method. Results: E_a, E_es and VAC are: 2.0 ± 0.71 mmHg/ml, 3.24 ± 1.39 mmHg/ml and 0.75 ± 0.46 respectively. VAC in the group with LVDd ≥ 50mm was higher than that in the group with LVDd < 50mm (respectively: 0.92 ± 0.52 vs 0.64 ± 0.39) (p < 0.05). VAC in the group with LVDs ≥ 35 mm was higher than that in the group with LVDs < 35 mm (respectively: 0.98 ± 0.52 vs 0.61 ± 0.37) (p < 0.05). VAC in the group with EF ≥50% was lower than in the group with EF < 50% (respectively: 0.63 ± 0.38 with 0.94 ± 0.52) (p < 0.05). VAC is positively correlated with LVDd and LVDs (r = 0.50 and 0.37) and negatively correlated with EF (r =-0.40) (p < 0.01). Conclusion: In patients with acute myocardial infarction, VAC increases as the left ventricular chambers dilate and LV function decreases.