HOAG ECG EXAMS EVALUATION UPDATED QUESTIONS
AND ANSWERS GRADED A+
✔✔What is the normal duration of a P wave? - ✔✔<0.12 seconds or 1.5 to 2.75 small
boxes
✔✔What are the characteristics of a normal P wave? - ✔✔P wave should be present
before each QRS complex. It should be upright. It should be smooth and round with no
notches. All P waves should look the same.
✔✔What is the normal duration of a PR interval? - ✔✔0.12 seconds to 0.20 seconds or
3 to 5 small boxes
✔✔What is the normal duration of the QRS complex? - ✔✔0.04 to 0.12 seconds or 1 to
3 small boxes
✔✔What are the characteristics of a normal QRS complex? - ✔✔There should be a P
wave before each QRS complex. All QRS complexes should look the same.
✔✔What are the characteristics of a normal ST segment? - ✔✔The ST segment should
be flat and return to baseline.
✔✔What is the normal duration of the QT interval? - ✔✔0.33 to 0.44 seconds or 9 to 11
small boxes
✔✔What are the advantages and disadvantages of the 6 second method for rate
determination? - ✔✔It is fast and very useful for irregular rhythms. However, it is the
least accurate for a normal rhythm.
✔✔ How many seconds are there between big black lines at the top of the strip? - ✔✔3
seconds
✔✔How many seconds are is the usual EKG strip? - ✔✔6 seconds
✔✔How is 1 second marked on EKG grid paper? - ✔✔5 large boxes
✔✔How many seconds is 1 large box? - ✔✔0.20 seconds
✔✔How many seconds is 1 small box? - ✔✔0.04 seconds
✔✔What does the P wave represent? - ✔✔Arterial depolarization
✔✔What is the PR interval? - ✔✔The time from the start of the P wave to the start of the
QRS complex.
AND ANSWERS GRADED A+
✔✔What is the normal duration of a P wave? - ✔✔<0.12 seconds or 1.5 to 2.75 small
boxes
✔✔What are the characteristics of a normal P wave? - ✔✔P wave should be present
before each QRS complex. It should be upright. It should be smooth and round with no
notches. All P waves should look the same.
✔✔What is the normal duration of a PR interval? - ✔✔0.12 seconds to 0.20 seconds or
3 to 5 small boxes
✔✔What is the normal duration of the QRS complex? - ✔✔0.04 to 0.12 seconds or 1 to
3 small boxes
✔✔What are the characteristics of a normal QRS complex? - ✔✔There should be a P
wave before each QRS complex. All QRS complexes should look the same.
✔✔What are the characteristics of a normal ST segment? - ✔✔The ST segment should
be flat and return to baseline.
✔✔What is the normal duration of the QT interval? - ✔✔0.33 to 0.44 seconds or 9 to 11
small boxes
✔✔What are the advantages and disadvantages of the 6 second method for rate
determination? - ✔✔It is fast and very useful for irregular rhythms. However, it is the
least accurate for a normal rhythm.
✔✔ How many seconds are there between big black lines at the top of the strip? - ✔✔3
seconds
✔✔How many seconds are is the usual EKG strip? - ✔✔6 seconds
✔✔How is 1 second marked on EKG grid paper? - ✔✔5 large boxes
✔✔How many seconds is 1 large box? - ✔✔0.20 seconds
✔✔How many seconds is 1 small box? - ✔✔0.04 seconds
✔✔What does the P wave represent? - ✔✔Arterial depolarization
✔✔What is the PR interval? - ✔✔The time from the start of the P wave to the start of the
QRS complex.
