(Optional) Discuss an electrocardiogram (ECG).

Discussion should include explanation of waveforms.

Process/Skill Questions:

• How does an ECG work?
• When is an ECG indicated for a patient?
• What are the differences between ventricular tachycardia and ventricular fibrillation?
• How are leads placed?
• How do you perform a right-side or 15-lead ECG?