Non-invasive clinical screening of diabetes and coronary heart disease

A non-invasive, clinical system for low-cost screening of diabetes mellitus (DM) and coronary heart disease (CHD) is introduced and tested on patients with known conditions. In particular, the heart rate variability (HRV) signal is extracted from 30 minutes of lead II electrocardiogram (ECG), during which the patient was requested to perform specific actions. The HRV signal is then characterized using time and frequency domain features which are subsequently used as a basis for classification into normal (N), DM, CHD, and diabetic CHD (CHDD) categories.