#1
What does EKG stand for?
Electrocardiogram
Electronic Keyboard Generator
Energy Kinetic Graph
Elastic Kinematics Gauge
#2
What is the standard paper speed for recording an EKG?
25 mm/s
50 mm/s
75 mm/s
100 mm/s
#3
What is the typical heart rate range for an adult at rest?
60-80 beats per minute
80-100 beats per minute
100-120 beats per minute
120-140 beats per minute
#4
Which part of the heart's electrical conduction system initiates the heartbeat?
Atrioventricular (AV) Node
Sinoatrial (SA) Node
Bundle of His
Purkinje Fibers
#5
In an EKG, what does the P wave represent?
Atrial depolarization
Ventricular depolarization
Ventricular repolarization
Atrial repolarization
#6
Which segment on an EKG represents the time between ventricular depolarization and repolarization?
PR interval
QRS complex
ST segment
T wave
#7
What does the QRS complex represent on an EKG?
Atrial depolarization
Ventricular depolarization
Ventricular repolarization
Atrial repolarization
#8
What is the normal duration of the PR interval on an EKG?
0.08-0.12 seconds
0.12-0.20 seconds
0.20-0.40 seconds
0.40-0.60 seconds
#9
Which EKG lead is often used to monitor the lateral wall of the heart?
Lead I
Lead II
Lead III
Lead V5
#10
What does a prolonged QT interval on an EKG indicate?
Atrial fibrillation
Ventricular fibrillation
Risk of torsades de pointes
Normal heart function
#11
In lead aVR, which part of the heart is mainly represented?
Inferior wall
Lateral wall
Anterior wall
Septal wall
#12
Which lead is often used to assess the inferior wall of the heart on an EKG?
Lead I
Lead II
Lead III
Lead aVF
#13
What does a flattened T wave on an EKG suggest?
Myocardial infarction
Hyperkalemia
Hypokalemia
Atrial fibrillation