ObjectiveTo analyze the clinical application value of renal blood flow ultrasound test on predicting early renal injury in patients with hypertension. Methods60 hypertensive patients with early renal were selected as observation group and 60 patients with simple hypertension were selected as control group, both were admitted to our hospital from February 2015 to February 2018. Ultrasound of renal blood flow was detected in the segmental renal artery (SRA) and interlobular renal artery (IRA) of the two groups. The end-diastolic blood flow velocity (Vd), maximum systolic blood flow velocity (Vs), and resistance index (RI) of SRA and IRA were compared between the two groups. The ROC curve was drawn and the clinical application value of renal blood flow ultrasound test on predicting early renal injury in hypertensive patients was analyzed. ResultsThere were no significant difference in Vss of SRA and IRA between the two groups (P＞0.05). The Vds of SRA and IRA in the observation group were significantly lower than those in the control group, and the RIs of SRA and IRA were significantly higher than those in the control group (P＜0.05). According to the Vd and RI of SRA of hypertensive patients, the area under the ROC curve for predicting early kidney injury was 0.662 and 0.714, respectively. According to the Vd and RI of the IRA, the area under the ROC curve for predicting early renal injury was 0.622 and 0.743, respectively. ConclusionRenal vascular resistance increases in hypertensive patients with early renal injury, and blood flow velocity in the renal arteries slows down. Predicting early renal injury based on the RI of SRA and IRA has certain clinical application value. In clinical practice, early renal injury can be assessed by assisting biochemical indicators such as serum creatinine and endogenous creatinine clearance rate.

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