Background: Type 2 diabetes mellitus is a systemic disease with life-threatening complications and morbidity. The 12 lead ECG, an easily available investigation, when studied in detail can give a lot of information and predict various microvascular and macrovascular complications apart from coronary artery disease.Methods: A random cross sectional study involving 100 patients of type 2 diabetes mellitus, in the age group of 18-80 years were included in study after applying various inclusion and exclusion criteria. They were subjected to ECG, 2D echocardiography and laboratory tests. Data were collected and analysed.Results: Arrythmia was not detected in any patient. A resting tachycardia (HR >100) in 30 patients correlated with Prolonged QTc (>440 miliseconds) (p=0.04). QRS amplitude was reduced in 26 patients. Prolonged QTc also correlated with presence of diabetic complications, retinopathy of NPDR type and nephropathy (p=0.004). Hence about 30% of the study group did show signs of early diabetic cardiac autonomic neuropathy and cardiomyopathy.Conclusions: The statistically significant utility of electrocardiogram in predicting various complications of diabetes apart from coronary artery disease.

Anti-synthetase syndrome is an autoimmune disease associated with interstitial lung disease (ILD), dermatomyositis and polymyositis. It has been recognized as an important cause of autoimmune inflammatory myopathy in a subset of patients with dermatomyositis. 37-year-old male, known case of type 1 diabetes mellitus, came with complaints of: generalized anasarca, pain in both knees, ankles, wrist and small joints of fingers. He also had dyspnoea on exertion, chronic non-productive cough, and fever off and on, all for 1 month. Initially all involvement was attributed to diabetes. For joint pain an antinuclear antibodies (ANA) was sent. He turned out to be anti-Jo1, antibody positive. Rash on hands was diagnosed by dermatologist as, mechanic’s hand, hence diagnosed as an inflammatory myopathy with dermatomyositis anti-synthetase syndrome. Patient was successfully treated with immunosuppressants and supportive treatment and responded to tablet Prednisolone and Mycophenolate mofetil. The patient had one major and 2 minor criteria-ILD, arthritis and Mechanic’s hand and anti-Jo 1 antibody positive. Thus, diagnosed as anti-synthetase syndrome with type 1 diabetes mellitus.