ECG stands for electrocardiogram, and lead detachment is when the electrodes fall off during an ECG because they are not tightly attached to the skin, which may affect the recording and formation of the ECG. ECG electrocardiography is a common cardiac aid that can diagnose and detect various types of arrhythmias, can help analyze and diagnose the presence of increased ventricular voltage or hypertrophy, and can also be used to detect the condition after implantation of a pacemaker. Lead disconnection may occur during ECG maneuvers. While performing an ECG on a patient, one of the leads attached to the body falls off and is not connected, resulting in a dislodged coupling on the limb lead. When performing an ECG, care should be taken to relax, breathe normally, etc. Do not perform the test after strenuous exercise, as this may affect the results.