#1
What does EKG stand for?
Electrocardiogram
ExplanationEKG stands for Electrocardiogram.
#2
What is the standard paper speed for recording an EKG?
25 mm/s
ExplanationThe standard paper speed for recording an EKG is 25 mm/s.
#3
What is the typical heart rate range for an adult at rest?
60-80 beats per minute
ExplanationThe typical heart rate range for an adult at rest is 60-80 beats per minute.
#4
Which part of the heart's electrical conduction system initiates the heartbeat?
Sinoatrial (SA) Node
ExplanationThe SA Node initiates the heartbeat.
#5
In an EKG, what does the P wave represent?
Atrial depolarization
ExplanationThe P wave represents atrial depolarization.
#6
Which segment on an EKG represents the time between ventricular depolarization and repolarization?
ST segment
ExplanationThe ST segment represents the time between ventricular depolarization and repolarization.
#7
What does the QRS complex represent on an EKG?
Ventricular depolarization
ExplanationThe QRS complex represents ventricular depolarization.
#8
What is the normal duration of the PR interval on an EKG?
0.08-0.12 seconds
ExplanationThe normal duration of the PR interval on an EKG is 0.08-0.12 seconds.
#9
Which EKG lead is often used to monitor the lateral wall of the heart?
Lead V5
ExplanationLead V5 is often used to monitor the lateral wall of the heart.
#10
What does a prolonged QT interval on an EKG indicate?
Risk of torsades de pointes
ExplanationA prolonged QT interval indicates a risk of torsades de pointes.
#11
In lead aVR, which part of the heart is mainly represented?
Inferior wall
ExplanationLead aVR mainly represents the inferior wall of the heart.
#12
Which lead is often used to assess the inferior wall of the heart on an EKG?
Lead III
ExplanationLead III is often used to assess the inferior wall of the heart on an EKG.
#13
What does a flattened T wave on an EKG suggest?
Hypokalemia
ExplanationA flattened T wave on an EKG suggests hypokalemia.