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Year : 2019  |  Volume : 23  |  Issue : 2  |  Page : 246-250

A study of cardiac autonomic neuropathy in patients with type 2 diabetes mellitus: A Northeast India experience

Department of Endocrinology, Gauhati Medical College and Hospital, Guwahati, Assam, India

Correspondence Address:
Abhamoni Baro
Resident Physician, Department of Endocrinology, Gauhati Medical College and Hospital; C/O Ananta Kumar Baro, House No. 67, Ward 51, Purbanchal Nagar, Barbari, Hengrabari, Guwahati, Assam
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/ijem.IJEM_336_18

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Aim: To investigate the prevalence and the risk factors for cardiac autonomic neuropathy (CAN) in type 2 diabetes mellitus (DM) patients. Study Design: Cross-sectional cohort study. Place and Duration of Study: This study was conducted in the Department of Endocrinology, Gauhati Medical College and Hospital, Assam, India between December 2016 to March 2018. Methodology: We included 100 patients (60 males and 40 females; age range: 36–72 years) with type 2 DM. Their clinical, biochemical, and metabolic parameters were analyzed and assessment of CAN were done based on the Ewing's criteria. Results: Out of 100 patients, 60 were males and 40 were females. The mean age of the patients was 53.3 ± 10.37 years (36–72 years) and the mean duration of diabetes was 9.03 ± 6.4 years (6 months–25 years). Patients were divided into two groups: “without CAN” (CAN−) and “with CAN” (CAN+). The prevalence of CAN was 70%, with early CAN in 25%, definite CAN in 24%, and severe CAN in 21% cases The patients with CAN were older (P = 0.0005), had longer diabetes duration (11.56 vs. 3.13; P = 0.0001), higher creatinine (P < 0.0001), and lower estimated glomerular filtration rate (eGFR) (P = 0.0001) compared to patients without CAN. Retinopathy, peripheral neuropathy, and nephropathy were common in CAN + patients. On multiple logistic regression analysis, duration of diabetes [odds ratio (OR); 6.7, P < 0.0001), older age (OR; 1.07, P < 0.016), and lower eGFR (OR; 0.97, P < 0.03) were risk factors for CAN. Conclusion: CAN is a common microvascular complication in type 2 DM with duration of diabetes, age, and severity of nephropathy being its significant determinants.

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