Diabetes mellitus (DM) is amajor risk factor for cardiovascular and renal diseases[1] .It is known about two thirds of diabetic patients died from these complication .Numerous epidemiological studies demonstrate that DM is commonly accompanied with hypertension and patients with diabetes and hypertension have higher renal and cardiovascular risks compared with those with either hypertension or diabetes. Therefore, better evaluating and managing BP in diabetic patients with hypertension is clinically relevant.~Hypertension also is a major risk factor for cardiovascular diseases (CVD) and all-cause mortality . Numerous randomized controlled trials using antihypertensive drugs and meta-analysis demonstrate that lowering peripheral blood pressure (BP) is beneficial for reducing cardiovascular and renal events.~In recent decades, some observational studies suggest that peripheral BP measured by brachial artery may not necessarily represent BP measured in the aortic artery which is known as central BP.~In addition, some clinical trials also revealed that despite with comparable peripheral BP, patients with high central BP had significantly higher cardiovascular risk compared with those with low central BP indicating that central BP might be an independent predictor for CVD
In recent decades, some observational studies suggest that peripheral BP measured by brachial artery may not necessarily represent BP measured in the aortic artery which is known as central BP .In addition, some clinical trials also revealed that despite with comparable peripheral BP, patients with high central BP had significantly higher cardiovascular risk compared with those with low central BP indicating that central BP might be an independent predictor for CVD