BAYCARE EKG EXAM PREP QUESTIONS AND
SOLUTIONS GRADED A PLUS
◉ EKG Grid. Answer: Each small square (the smaller lighter boxes
within the big bold boxes) represents 0.04 seconds
Each larger square (the boxes within the bold lines) represents 0.2
seconds.
Each large square has 5 small squares across SO 0.04 X 5 = 0.2
seconds
◉ The 6 Second Strip Method. Answer: Least accurate, but quickest
way to estimate rate especially in irregular rhythms
◉ EKG. Answer:
◉ EKG intervals. Answer:
◉ P Wave. Answer: Atrial depolarization
◉ PR Interval. Answer: Normal is 0.12 to 0.20 seconds
Corresponds to the delay the AV node provides to allow for
ventricular filling
, ◉ QRS Complex. Answer: Normal is <0.12 seconds usually between
0.06 to 0.10 seconds
Ventricular depolarization
◉ QT Interval. Answer: Normal 0.36-0.46
◉ 6 Steps for Rhythm Interpretation. Answer: Determine Regularity
Calculate the Rate
Evaluate the P wave
Measure the PRI
Evaluate the QRS Width
Evaluate the T wave and Calculate the QTI
◉ Normal Sinus Rhythm. Answer: Regularity: atrial and ventricular
rate are regular
Rate: 60 to 100 beats per minute
P wave: upright, smooth, round and uniform shape, one for every
QRS complex
PRI : 0.12 to 0.20 seconds
QRS: 0.06 to 0.10 seconds
QTI: 0.36 to 0.46 seconds
T wave: upright, smooth and round uniform shape
◉ Sinus Bradycardia. Answer: Regularity: atrial and ventricular rate
are regular
SOLUTIONS GRADED A PLUS
◉ EKG Grid. Answer: Each small square (the smaller lighter boxes
within the big bold boxes) represents 0.04 seconds
Each larger square (the boxes within the bold lines) represents 0.2
seconds.
Each large square has 5 small squares across SO 0.04 X 5 = 0.2
seconds
◉ The 6 Second Strip Method. Answer: Least accurate, but quickest
way to estimate rate especially in irregular rhythms
◉ EKG. Answer:
◉ EKG intervals. Answer:
◉ P Wave. Answer: Atrial depolarization
◉ PR Interval. Answer: Normal is 0.12 to 0.20 seconds
Corresponds to the delay the AV node provides to allow for
ventricular filling
, ◉ QRS Complex. Answer: Normal is <0.12 seconds usually between
0.06 to 0.10 seconds
Ventricular depolarization
◉ QT Interval. Answer: Normal 0.36-0.46
◉ 6 Steps for Rhythm Interpretation. Answer: Determine Regularity
Calculate the Rate
Evaluate the P wave
Measure the PRI
Evaluate the QRS Width
Evaluate the T wave and Calculate the QTI
◉ Normal Sinus Rhythm. Answer: Regularity: atrial and ventricular
rate are regular
Rate: 60 to 100 beats per minute
P wave: upright, smooth, round and uniform shape, one for every
QRS complex
PRI : 0.12 to 0.20 seconds
QRS: 0.06 to 0.10 seconds
QTI: 0.36 to 0.46 seconds
T wave: upright, smooth and round uniform shape
◉ Sinus Bradycardia. Answer: Regularity: atrial and ventricular rate
are regular
