What is the Electrocardiogram (ECG)?

ECG is a technique that by using the electromagnetic waves of the heart we can realized the physical condition and cardiovascular potential diseases in people. ECG is a painless procedure that records the electrical activity of the heart. ECG is one of the safest and easiest steps that give the valuable information about heart to doctor. Electric current published from the heart can be valuable in the diagnosis of heart disease by electrodes in Standard various colors that are connected to the hands and legs and chest. ECG has high value in the review of heart pain and heart attacks and has done as routine procedures in all those who have severe heart problems. It is better to patient being free from stress and does not eat heavy meal. The ECG should be done in warm room to avoid him shaken, because shaking body (whether public or cold) affect the ECG and creates so-called noise. Long hair of chest also prevents of correct recording of ECG. ECG does not induce any electric or electric current to the patient. The person must turn off his hours and other metal parts. ECG paper is graded ring and there is in the machine and when needle loom get a little hot will records some lines on paper. Of course, more advanced electrocardiogram (ECG) devices are also made that take ECG from several directions at the same time and receive all leads in the short time. 10 wires coming out of the Halters, four wires are connected to the hands and feet and 6 wires are connected to the heart. These wires are connected to the appropriate location after their cupping in heads stained with gel lubricant. Electric waves in the ECG are recorded as intermittent peaks and valleys. Each of the electrical activity of the heart consists of several pieces. This period starts from the P wave and continue to next P wave. P is a relatively small wave that indicates atrial contraction. After a short pause, there is QRS complex where ECGs had a rapid movement to the down, up and again to down. This complex is caused by ventricular contraction and finally, after a pause, longer T wave can be seen that shows the sudden ventricular filling. ECG ST-segment and there are four main distances: QRS, P.R, R, Q.R that changes each of them represents a particular disease. One of the most important changes that are track in ECG is the signs and symptoms of a heart attack or M.I that depending on the point of the heart that is in trouble is seen as changes in T or ST and QRS at different leads of heart. With its help, Doctor can realize the severity and type of heart attack.