The Diagnostic Value of 3~(rd)M-SBPRR to Evaluate the Coronary Artery Stenosis in Essential Hypertension Patients

Objective To evaluate the post exercise systolic blood pressure and the degree of coronary artery stenosis and find the left main coronary artery stenosis in essential hypertension patients.Methods 560 essential hypertension patients who were received treadmill test and coronary angiography within 90 days were divided into four quartile groups based on the third minute systolic blood pressure recovery ratio level.We compared the ratio of single coronary artery stenosis or double coronary artery stenosis or three coronary artery stenosis in the four groups with Chi-Square test.ROC curve of 3rdM-SBPRR level was used to analysis the predictive value for left main coronary artery stenosis.Results The ratio of three vessels coronary artery stenosis in the P76～P100(1.13～1.42)group was the highest among the four groups,and the ratio of single vessels coronary artery stenosis in the P76～P100(1.13～1.42)group was the lowest.ROC curve of 3rdM-SBPRR level analysis showed 3rdM-SBPRR was valuable for predicting left main coronary artery stenosis (P=0.000),increased quartiles of 3rdM-SBPRR levels were associated with increased left main coronary artery stenosis ratio.The predictive sensitivity of main coronary artery stenosis was 84.1% and the specificity was 78.1% when 3rdM-SBPRR level was 1.12.Conclusion The increased 3rdM-SBPRR was associated with deteriorated coronary artery stenosis in essential hypertension patients.The 3rdM-SBPRR level can be a predictive factor for left main coronary artery stenosis.