The overall goal of performing an ECG is to obtain information about the structure and function of the heart. Medical uses for this information are varied and generally need knowledge of the structure and/or function of the heart to be interpreted. Some indications for performing an ECG include:
Suspected myocardial infarction (heart attack) or chest pain.
ST elevated myocardial infarction
non-ST elevated myocardial infarction
Suspected pulmonary embolism or shortness of breath
ECG is basically recording of current produced by the heart and its conduction system. i this test some leads are kept over the chest and limbs ( arms & Legs) of the patient and a machine records the current produced and prints it on a sheet of paper. ECG is very helpful in diagnosing heart diseases like Heart attack, angina, arrhythmia, heart block, Hypertension effect- hypertrophy and various other disorder. its a very simple, convenient, fast, cheap and easily available test of the heart and is usually done in all the patients coming for cardiology consultation.