What is the primary purpose of an ECG?

How many electrodes are typically attached to a patient for a standard ECG recording?

What does the P-wave represent in an ECG?

The time interval from the beginning of atrial contraction to the beginning of ventricular contraction is called the:

What does the QRS complex represent in the ECG?

What is the normal heart rate range for a person in normal sinus rhythm?

Which of the following conditions is represented by a heart rate below 60 bpm?

What term is used for the resting state of myocardial cells?

What does the ST segment indicate on an ECG?

Which waveform represents ventricular repolarization?