PCT EKG Lead Placement & Rhythm Recognition 3

Question 1

What is the normal duration of the QRS complex?

Accepted Answer

0.06-0.12 seconds

Answer

0.04-0.08 seconds

Answer

0.12-0.20 seconds

Answer

0.20-0.40 seconds

Question 2

Which lead is BEST for monitoring cardiac rhythm in most clinical settings?

Accepted Answer

Lead II

Answer

Lead I

Answer

Lead aVR

Answer

Lead V6

Question 3

On EKG paper, each small square represents how many seconds?

Accepted Answer

0.04 seconds

Answer

0.02 seconds

Answer

0.10 seconds

Answer

0.20 seconds

Question 4

ST segment elevation in contiguous leads on an EKG is a hallmark finding of:

Accepted Answer

Acute myocardial infarction (STEMI)

Answer

Stable angina

Answer

Pulmonary embolism

Answer

Pericardial effusion

Question 5

What should the PCT verify BEFORE applying EKG electrodes to a patient?

Accepted Answer

That the patient's skin is clean, dry, and free of excess hair at electrode sites

Answer

That the patient has fasted for 8 hours

Answer

That the patient has removed all jewelry from their body

Answer

That the room temperature is exactly 72°F

Question 6

Sinus bradycardia is characterized by a heart rate below:

Accepted Answer

60 bpm

Answer

80 bpm

Answer

50 bpm

Answer

40 bpm