Discordant BP readings predict complications

BP was measured four times in both arms in 727 people with diabetes and 285 controls without diabetes. The results showed systolic interarm differences of more than 10mmHg were associated with a threefold increased risk of peripheral arterial disease in people with diabetes.

Similarly, differences of more than 15mmHg increased diabetic retinopathy fivefold, and chronic kidney disease sevenfold, over five years of follow-up.

The authors said the results showed systolic interarm differences could be excluded with a single pair of measurements.

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