Intensive Risk Factor Management and Cardiovascular Autonomi
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The effects of preventive interventions on cardiovascular autonomic neuropathy (CAN) remain unclear. Researchers examined the effect of intensively treating traditional risk factors for CAN, including hyperglycemia, hypertension, and dyslipidemia, in individuals with type 2 diabetes (T2D) and high cardiovascular risk participating in the Action to Control Cardiovascular Risk in Diabetes (ACCORD) trial.

CAN was defined as heart rate variability indices below the fifth percentile of the normal distribution. Of 10,251 ACCORD participants, 71% (n = 7,275) had a CAN evaluation at study entry and at least once after randomization. The effects of intensive interventions on CAN were analyzed among these subjects through generalized linear mixed models.

Results:
-- As compared with standard intervention, intensive glucose treatment reduced CAN risk by 16%—an effect driven by individuals without cardiovascular disease (CVD) at baseline rather than those with CVD.

-- Intensive blood pressure (BP) intervention decreased CAN risk by 25%, especially in patients greater than 65 years old.

-- Fenofibrate did not have a significant effect on CAN.

Conclusively, These data confirm a beneficial effect of intensive glycemic therapy and demonstrate, for the first time, a similar benefit of intensive BP control on CAN in T2D. A negative CVD history identifies T2D patients who especially benefit from intensive glycemic control for CAN prevention.

Source: https://care.diabetesjournals.org/content/early/2020/11/02/dc20-1842?rss=1
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