NHA CET Study Guide - Ch.3 EKG Analysis and Interpretation

Using the 1500 method, determine the patient’s heart rate from the EKG tracing
A. 85/min

B. 95/min

C. 105/min

D. 115/min

D

Using the 6-second method, determine the patient’s heart rate from the EKG tracing.

A. 60/min

B. 80/min

C. 120/min

D. 140/min

C

Using the 6-second method, determine the patient’s heart rate from the EKG tracing.

A. 80/min

B. 90/min

C. 190/min

D. 210/min

C

Using the EKG tracing, identify the arrythmia that is present.

A. Sinus bradycardia

B. Sinus tachycardia

C. Junctional bradycardia

D. Junctional tachycardia

B

Using the EKG tracing, determine the duration of the PR interval.
A. 0.08 seconds

B. 0.12 seconds

C. 0.2 seconds

D. 0.28 seconds

C

Using the EKG tracing, determine the QRS duration.

A. 0.04 sec

B. 0.06 sec

C. 0.12 sec

D. 0.2 sec

C

Using the EKG tracing, determine the duration of the QT interval.

A. 0.25 sec

B. 0.3 sec

C. 0.35 sec

D. 0.4 sec

D

Which of the following abnormal waveforms is shown in the EKG tracing below and requires immediate emergent treatment of the patient?
A. Prolonged QRS complex

B. ST segment depression

C. Prolonged PR interval

D. ST segment elevation

D

Using the EKG tracing, identify which of the following wave forms is inverted for Lead II

A. P wave

B. Q wave

C. R wave

D. T wave

D

Using the EKG tracing, identify the cardiac rhythm.
A. Atrial rhythm

B. Junctional rhythm

C. Sinus rhythm

D. Ventricular rhythm

B

Using the EKG tracing, identify the arrhythmia.

A. Sinus

B. Atrial

C. Ventricular

D. Junctional

C

Using the EKG tracing, identify the arrhythmia.

A. Atrial flutter

B. Ventricular fibrillation

C. Atrial fibrillation

D. Supraventricular tachycardia

A

Which of the following is shown on the EKG tracing?

A. Heart block

B. Pacemaker spikes

C. Ventricular fibrillation

D. Atrial flutter

B

Which of the following is shown on the EKG tracing?

A. Heart block

B. Myocardial infarction

C. Ventricular fibrillation

D. Atrial flutter

B

Which of the following is shown on the EKG tracing?

A. Ischemia

B. Heart block

C. Junctional rhythm

D. Wandering atrial pacemaker

A

An EKG technician is applying an automated external defibrillator to a patient who experiences ventricular fibrillation and is unresponsive. The patient does not have any implanted devices in place. In which of the following locations should the technician apply the defibrillator pads?
A. To the right of the upper sternum and to the left of the upper sternum

B. To the right of the upper sternum and to the left mid axillary line

C. To the right of the midaxillary line and to the left of the midaxillary line

D. To the right of the midaxillary line and to the left of the midclavicular space

B

An EKG technician observes vertical spikes followed by wide QRS complexes at a rate of 70/min on an EKG tracing. Which of the following statements by the technician is correct?

A. “The patient has a ventricular pacemaker.”

B. “This is due to patient movement and respiration
C. “There must be a source of external electrical interference.”

D. “The spikes indicate that the cable is damaged.”

A

What percentage of patients who have ventricular tachycardia become unresponsive immediately and require intervention?
A. 20%

B. 30%

C. 40%

D. 50%

D

Which of the following should an EKG technician evaluate first when determining EKG rhythm and regularity?

A. P-P interval

B. PR interval

C. QRS complex

D. QT interval

A

Which of the following is a characteristic of the sinoatrial (SA) node?

A. It can spontaneously generate an electrical impulse

B. It has an intrinsic rate of 40 to 60/min

C. It is located at the atrioventricular (AV) junction

D. It allows time for the ventricles to fill

A