ECG - 4 ECG intervals Flashcards
What is the PR interval?
1 - start of P wave to Q wave
2 - start of P wave to T wave
3 - start of P wave to R wave
4 - start of P wave to S wave
3 - start of P wave to R wave
The PR interval is the time from the start of P wave to R wave, which is atrial depolarisation to the start of ventricular depolarisation. What is the normal duration range for the PR interval?
1 small square = 0.04 seconds
1 large square = 0.2 seconds
1 - 0.12 - 0.22 seconds
2 - 0.36 - 0.44 seconds
3 - 0.06 - 12 seconds
4 - <0.20 seconds
1 - 0.12 - 0.22 seconds
What is the QRS?
1 - start of Q wave to start of T wave
2 - start of Q wave to end of S wave
3 - start of P wave to R wave
4 - start of P wave to end of S wave
2 - start of Q wave to end of S wave
The QRS complex is the start of the Q wave to the end of the S wave. What is the normal duration for the QRS complex?
1 - 0.12 - 0.22 seconds
2 - 0.36 - 0.44 seconds
3 - 0.06 - 12 seconds
4 - <0.20 seconds
3 - 0.06 - 12 seconds
What is the ST interval?
1 - end of S wave to end of T wave
2 - start of S wave to end of S wave
3 - start of S wave to R wave
4 - end of S wave to start of T wave
4 - end of S wave to start of T wave
The ST interval is from the end of the S wave to the start of the T wave. What is the normal duration of the ST interval?
1 - 0.08 - 0.12 seconds
2 - 0.36 - 0.44 seconds
3 - 0.06 - 12 seconds
4 - <0.20 seconds
1 - 0.08 - 0.12 seconds
What is the QT interval?
1 - start of the Q wave to end of T wave
2 - start of Q wave to end of S wave
3 - start of Q wave to R wave
4 - end of Q wave to start of T wave
1 - start of the Q wave to end of T wave
The QT interval is from the start of the Q wave to end of T wave. What is the normal duration for the QT interval?
1 - 0.08 - 0.12 seconds
2 - 0.36 - 0.44 seconds
3 - 0.06 - 12 seconds
4 - <0.20 seconds
2 - 0.36 - 0.44 seconds
