Welch Allyn CP50 - Quick Reference Guide - Manual (Page 2)

Attaching the leads to the patient
Proper lead attachment is important for a successful ECG. The most common ECG
problems are caused by poor electrode contact and loose leads. Follow your local
procedures for attaching the leads to the patient. Here are some common guidelines.
To attach the leads to the patient
1. Prepare the patient.
• Describe the procedure. Explain the importance of holding still during the test.
(Movement can create artifact.)
• Verify that the patient is comfortable, warm, and relaxed. (Shivering can create
artifact.)
• Put the patient in a reclining position with the head slightly higher than the heart
and legs (the semi-Fowler’s position).
2. Select the electrode locations. (See the “Electrode locations” chart.)
• Look for flat areas.
• Avoid fatty areas, bony areas, and major muscles.
3. Prepare the electrode locations.
• Shave or clip the hair.
• Thoroughly clean the skin, and lightly rub it dry. You may use soap and water,
isopropyl alcohol, or skin preparation pads.
4. Attach the lead wires to the electrodes.
5. Apply the electrodes to the patient.
Electrode examples, left to right: arm clamp (reusable), Welsh cup (reusable), tab
electrode (disposable), monitoring electrode (disposable).
• For reusable electrodes: Use electrode paste, gel, or cream to cover an area
the size of each electrode but no larger. Secure the arm and leg clamps. Apply
the Welsh cups (suction electrodes) to the chest.
2 CP 50™ and CP 50 Plus™ 12-lead resting electrocardiograph