Abstract:

Objective: To investigate the characteristics of real-time three plane strain rate imaging of left atrial function in the patients with primary hypertension and coronary artery stenosis, and to evaluate its clinical application value. Methods: Total 82 patients with primary hypertension were selected and divided into primary hypertension group (EH group, n=42) and primary hypertension complicated with coronary artery stenosis group (EHCHD group, n=40).In addition, the physical examination people were selected as control group (n=42). All the subjects were examined by conventional echocardiography, and the left atrial function in real-time three plane strain rate imaging was analyzed. The parameters of conventional echocardiography and real-time three plane strain rate imaging were compared. Results: Compared with control group, the systolic left atrial mean peak strain rate (SRs),early diastolic left atrial mean peak strain rate (SRe) and SRe/SRa of the patients in EH group and EHCHD group were significantly decreased (P<0.05); the atrial systolic mean peak strain rate (SRa) and Time-SRa in EH group and EHCHD group were significantly increased (P<0.05). Compared with EH group, SRs,SRe and SRe/SRa in EHCHD group were obviously decreased (P<0.05); SRa and Time-SRa were significantly increased (P<0.05). Conclusion: Real-time three plane strain rate imaging can easily and accurately analyze the left atrial function in the patients with essential hypertension and coronary artery stenosis, it is worth to popularize in clinical application.

Key words: echocardiography, three-plane strain rate, hypertension, coronary artery, stenosis, left atrium