1. The Cardiac cycle and the ECG
David Taylor

2. Outcomes Understand the pressure changes that occur in the heart
Describe the electrical basis of the ECG
Explain why the heart sounds occur when they do
Predict the effect on the ECG of left ventricular infarct.

3. Case
Mr Gibson is taken straight into the emergency room in the local casualty department, given oxygen, pain relief, and attached to a cardiac monitor. Mrs Gibson is very concerned about her husband. Dr Smith from the coronary care unit (CCU) tells her that the most likely cause is a heart attack.

4. I used these books

5. Cardiac Cycle

6. ECG and excitation

7. Understanding the Q-wave

8. Case.....
The pathologist’s report shows “occlusion of the left coronary artery with a full thickness infarct of the left ventricular wall”.

9. Understanding the Q-wave

10. Pressures in the heart

11. ECG, pressures and sounds

12. Outcomes Understand the pressure changes that occur in the heart
Describe the electrical basis of the ECG
Explain why the heart sounds occur when they do
Predict the effect on the ECG of left ventricular infarct.

13. Cardiac Cycle