Question

What is the relationship between the cardiac cycle and an ECG?

Answer 1

Relationship between cardiac cycle and ECG:

1. The cardiac cycle attributes to a comprehensive heartbeat from its production to the commencement of the next beat. The cardiac cycle involves a complete contraction and relaxation of both the atria and ventricles and the cycle last approximately 0.8 seconds.
2. The electrocardiogram, or ECG, is a graphical representation of the heart's electrical exertion during the cardiac cycle.
3. The letters P to T represent each peak in the ECG

1. P-wave – atria depolarization or atrial contraction.
2. Depolarization of the ventricles or ventricular compression is the QRS complex.
3. T- wave – ventricle repolarization.