心电图机使用（ECG use）.docVIP

心电图机使用（ECG use） ECG (electrocardiogram, ECG): the ECG is used to record the changes of electrical activity produced by each cardiac cycle from the surface of the body. Two, teaching ECG machine use, to explain matters needing attention, operation steps, and then students in groups, in the teacher led students between each other mapping exercises. Operation notes: 1. check whether the power supply voltage is in line with the specified voltage of the machine. 2. check the ECG machine brush, whether the control knob is in zero or fixed position, if not in the cycle of fixed position. 3. check whether the machines and wires and accessories are complete and complete. Operation procedure: 1., the examination to explain the significance of ECG, to inform the examination no pain, no damage, dispel worries, eliminate tension, so that their muscles relax, and ask them to lie on the examination bed. 2. connect the ground wire and check again whether the ground is reliable. 3. connect the power cord, turn on the power switch and warm the machine. According to the provisions of 4. connect the lead wire, the subjects of bilateral wrist and upper medial malleolus on both sides of exposure, and scrub with alcohol gauze degreasing, make the skin redness. And then coated with conductive liquid, and keep the skin electrode good contact, the electrode plate according to the right upper limb and left upper limb, red line, yellow line, green line, and left leg, right leg (the black line and the ground wire is communicated, to the requirements of the white chest) fixed. The international connection of ECG leads and the location of electrodes have been unified, and a common standard lead system has been formed, which is conventional lead. These included: limb leads (6), standard limb leads (bipolar lead 3), unipolar limb leads (3) and precordial leads (6 unipolar leads). Chest lead monitoring electrode position: V1, right side of sternum, fourth intercostal spaces. V2, left sternal border,