NHA EKG TECHNICIAN
CERTIFICATION EXAM 2026/2027
QUESTIONS AND ANSWERS
1. Which lead is placed at the fifth intercostal space at the midaxillary line?
A. V6
B. V5
C. V4
D. V2
Answer: A
Conceptual Explanation: Lead V6 is positioned at the fifth intercostal space at the
midaxillary line, level with V4.
2. A technician is performing an EKG on a patient with dextrocardia. Where should the
precordial leads be placed?
A. Standard positions on the left side
B. Posterior positions V7 through V9
C. Lower extremities only
D. Mirrored positions on the right side
,Answer: D
Conceptual Explanation: Dextrocardia is a condition where the heart is on the right side
of the chest; therefore, leads must be mirrored to the right side to obtain an accurate
reading.
3. Which rhythm is characterized by a ‘sawtooth’ pattern of P waves?
A. Atrial Flutter
B. Ventricular Tachycardia
C. Atrial Fibrillation
D. Junctional Rhythm
Answer: A
Conceptual Explanation: Atrial flutter is defined by rapid, regular atrial depolarizations
that create a characteristic sawtooth appearance known as F-waves.
4. What is the standard paper speed for a 12-lead EKG?
A. 50 mm/sec
B. 5 mm/sec
C. 10 mm/sec
D. 25 mm/sec
Answer: D
, Conceptual Explanation: The standard recording speed for an EKG is 25 mm per second.
5. A PR interval of 0.24 seconds indicates which of the following?
A. Normal sinus rhythm
B. Bundle branch block
C. Second-degree AV block Type I
D. First-degree AV block
Answer: D
Conceptual Explanation: A PR interval greater than 0.20 seconds (one large box) that is
consistent across all beats indicates a first-degree AV block.
6. Which electrode is considered the ‘ground’ in a standard EKG?
A. Left Arm
B. Right Arm
C. Right Leg
D. Left Leg
Answer: C
Conceptual Explanation: The right leg (RL) electrode serves as the ground to reduce
electrical interference.
CERTIFICATION EXAM 2026/2027
QUESTIONS AND ANSWERS
1. Which lead is placed at the fifth intercostal space at the midaxillary line?
A. V6
B. V5
C. V4
D. V2
Answer: A
Conceptual Explanation: Lead V6 is positioned at the fifth intercostal space at the
midaxillary line, level with V4.
2. A technician is performing an EKG on a patient with dextrocardia. Where should the
precordial leads be placed?
A. Standard positions on the left side
B. Posterior positions V7 through V9
C. Lower extremities only
D. Mirrored positions on the right side
,Answer: D
Conceptual Explanation: Dextrocardia is a condition where the heart is on the right side
of the chest; therefore, leads must be mirrored to the right side to obtain an accurate
reading.
3. Which rhythm is characterized by a ‘sawtooth’ pattern of P waves?
A. Atrial Flutter
B. Ventricular Tachycardia
C. Atrial Fibrillation
D. Junctional Rhythm
Answer: A
Conceptual Explanation: Atrial flutter is defined by rapid, regular atrial depolarizations
that create a characteristic sawtooth appearance known as F-waves.
4. What is the standard paper speed for a 12-lead EKG?
A. 50 mm/sec
B. 5 mm/sec
C. 10 mm/sec
D. 25 mm/sec
Answer: D
, Conceptual Explanation: The standard recording speed for an EKG is 25 mm per second.
5. A PR interval of 0.24 seconds indicates which of the following?
A. Normal sinus rhythm
B. Bundle branch block
C. Second-degree AV block Type I
D. First-degree AV block
Answer: D
Conceptual Explanation: A PR interval greater than 0.20 seconds (one large box) that is
consistent across all beats indicates a first-degree AV block.
6. Which electrode is considered the ‘ground’ in a standard EKG?
A. Left Arm
B. Right Arm
C. Right Leg
D. Left Leg
Answer: C
Conceptual Explanation: The right leg (RL) electrode serves as the ground to reduce
electrical interference.
