Page 1 of 149
BayCare EKG Test Actual Exam 2026/2027 –
Complete Exam-Style Questions with Detailed
Rationales | 100% Verified | Pass
Guaranteed – A+ Graded
1. What is the normal duration of the PR interval?
A) 0.04–0.10 seconds
B) 0.12–0.20 seconds
C) 0.20–0.30 seconds
D) 0.30–0.40 seconds
Answer: B
Rationale: The PR interval is measured from the onset of the P
wave to the onset of the QRS complex. Normal range is 0.12–
0.20 seconds (120–200 ms). A prolonged PR interval (>0.20 s)
indicates first-degree AV block; a short PR interval (<0.12 s)
may indicate pre-excitation (WPW).
,Page 2 of 149
2. Which lead is used as the “rhythm strip” lead in most
continuous monitoring?
A) Lead I
B) Lead II
C) Lead aVR
D) Lead V5
Answer: B
Rationale: Lead II provides a clear view of the P wave and is
oriented along the cardiac axis, making it ideal for rhythm
analysis. Continuous monitoring often uses lead II for arrhythmia
detection.
3. The normal QRS duration is:
A) <0.06 seconds
B) 0.06–0.10 seconds
C) 0.10–0.12 seconds
D) 0.12–0.20 seconds
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Answer: B
Rationale: Normal QRS duration is ≤0.10 seconds (100 ms). A
QRS ≥0.12 seconds indicates intraventricular conduction delay
(bundle branch block or non-specific).
4. Which wave represents ventricular repolarization?
A) P wave
B) QRS complex
C) T wave
D) U wave
Answer: C
Rationale: The T wave represents ventricular repolarization. The P
wave is atrial depolarization; QRS is ventricular depolarization;
U wave is of uncertain origin (possibly Purkinje fiber
repolarization).
5. The normal QT interval corrected for heart rate (QTc) should
be:
, Page 4 of 149
A) <0.44 seconds in men, <0.46 seconds in women
B) <0.50 seconds in all adults
C) >0.40 seconds always
D) Exactly 0.36 seconds
Answer: A
Rationale: QTc (using Bazett’s formula) is normally ≤440 ms
(0.44 s) in men and ≤460 ms (0.46 s) in women. Prolonged QTc
increases risk of torsade de pointes.
6. Which of the following is the paper speed standard for EKG
recording in the United States?
A) 25 mm/second
B) 50 mm/second
C) 10 mm/second
D) 100 mm/second
Answer: A
Rationale: Standard paper speed is 25 mm/s. At this speed, one
BayCare EKG Test Actual Exam 2026/2027 –
Complete Exam-Style Questions with Detailed
Rationales | 100% Verified | Pass
Guaranteed – A+ Graded
1. What is the normal duration of the PR interval?
A) 0.04–0.10 seconds
B) 0.12–0.20 seconds
C) 0.20–0.30 seconds
D) 0.30–0.40 seconds
Answer: B
Rationale: The PR interval is measured from the onset of the P
wave to the onset of the QRS complex. Normal range is 0.12–
0.20 seconds (120–200 ms). A prolonged PR interval (>0.20 s)
indicates first-degree AV block; a short PR interval (<0.12 s)
may indicate pre-excitation (WPW).
,Page 2 of 149
2. Which lead is used as the “rhythm strip” lead in most
continuous monitoring?
A) Lead I
B) Lead II
C) Lead aVR
D) Lead V5
Answer: B
Rationale: Lead II provides a clear view of the P wave and is
oriented along the cardiac axis, making it ideal for rhythm
analysis. Continuous monitoring often uses lead II for arrhythmia
detection.
3. The normal QRS duration is:
A) <0.06 seconds
B) 0.06–0.10 seconds
C) 0.10–0.12 seconds
D) 0.12–0.20 seconds
,Page 3 of 149
Answer: B
Rationale: Normal QRS duration is ≤0.10 seconds (100 ms). A
QRS ≥0.12 seconds indicates intraventricular conduction delay
(bundle branch block or non-specific).
4. Which wave represents ventricular repolarization?
A) P wave
B) QRS complex
C) T wave
D) U wave
Answer: C
Rationale: The T wave represents ventricular repolarization. The P
wave is atrial depolarization; QRS is ventricular depolarization;
U wave is of uncertain origin (possibly Purkinje fiber
repolarization).
5. The normal QT interval corrected for heart rate (QTc) should
be:
, Page 4 of 149
A) <0.44 seconds in men, <0.46 seconds in women
B) <0.50 seconds in all adults
C) >0.40 seconds always
D) Exactly 0.36 seconds
Answer: A
Rationale: QTc (using Bazett’s formula) is normally ≤440 ms
(0.44 s) in men and ≤460 ms (0.46 s) in women. Prolonged QTc
increases risk of torsade de pointes.
6. Which of the following is the paper speed standard for EKG
recording in the United States?
A) 25 mm/second
B) 50 mm/second
C) 10 mm/second
D) 100 mm/second
Answer: A
Rationale: Standard paper speed is 25 mm/s. At this speed, one
