Abstract
Background: Diabetes mellitus is the most common cause of autonomic neuropathy. The aims of this study were to determine the prevalence of cardiovascular autonomic neuropathy (CAN) in diabetic patients in Basrah by conducting cardiac autonomic function tests as well as to know the predictors of the CAN in diabetic patients. Methods: The study was conducted at the Al-Faiha Diabetes Endocrine and Metabolism Center (FDEMC) in Basrah for the period from January to December 2011. Sixty eight patients were selected to participate in this study. The tests for autonomic cardiovascular function were performed as bedside procedures. Results: The CAN was seen in 42.6% of the selected diabetic patients. The sequence of abnormal tests in this study was as follows: beat-to-beat heart rate variation (E/I), heart rate response to Valsalva maneuver, diastolic blood pressure response to isometric exercise, and then heart rate response to standing. Possible predictors of CAN were gastroparesis, nocturnal diarrhea, areas of symmetrical anhydrosis, gustatory sweating, dry skin, erectile dysfunction for men, palpitation, exercise intolerance and insulin use, but not the duration of diabetes.
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