EKG Flashcards
What does EKG stand for?
Electrocardiogram
True or False: An EKG measures the electrical activity of the heart.
True
Fill in the blank: The standard EKG has _____ leads.
12
What is the normal range for heart rate in adults?
60 to 100 beats per minute
What does the P wave represent in an EKG?
Atrial depolarization
Multiple Choice: Which segment represents the time between ventricular depolarization and repolarization? A) P-R Interval B) Q-T Interval C) S-T Segment D) P Wave
C) S-T Segment
What does the QRS complex represent?
Ventricular depolarization
True or False: A prolonged QT interval can lead to serious arrhythmias.
True
What is the significance of the T wave in an EKG?
Ventricular repolarization
Fill in the blank: The _____ interval measures the time from the beginning of atrial depolarization to the beginning of ventricular depolarization.
P-R Interval
What is the typical duration of a normal QRS complex?
0.06 to 0.10 seconds
Multiple Choice: Which of the following conditions can be indicated by ST segment elevation? A) Myocardial Infarction B) Atrial Fibrillation C) Ventricular Tachycardia D) Bradycardia
A) Myocardial Infarction
What does a flat T wave potentially indicate?
Ischemia or electrolyte imbalance
True or False: Atrial fibrillation is characterized by a regular rhythm.
False
What does the term ‘lead’ refer to in EKG interpretation?
A specific view of the heart’s electrical activity
Fill in the blank: The _____ is the time it takes for the heart to recover after each heartbeat.
Refractory period
What is the primary purpose of an EKG?
To diagnose cardiac conditions and monitor heart health
Multiple Choice: Which lead is typically used to monitor the heart’s rhythm? A) Lead I B) Lead II C) Lead III D) All of the above
D) All of the above
What does the U wave represent, if present?
Purkinje fiber repolarization
True or False: The heart’s electrical impulse originates from the AV node.
False
What is the function of the SA node?
It acts as the heart’s natural pacemaker.
Fill in the blank: A normal EKG tracing has a _____ pattern.
Repeating
What does a biphasic T wave suggest?
Possible myocardial ischemia
Multiple Choice: What is a common cause of a low voltage EKG? A) Hyperthyroidism B) Pericardial effusion C) Atrial flutter D) Myocardial infarction
B) Pericardial effusion
What is the first step in EKG interpretation?
Determine the heart rate
True or False: EKGs can only be performed in a hospital setting.
False
