NCLEX - CARDIO Flashcards
What does EKG stand for?
Electrocardiogram
True or False: An EKG measures the electrical activity of the heart.
True
What is the primary purpose of an EKG?
To diagnose heart conditions and monitor heart health.
Fill in the blank: The EKG records the heart’s electrical activity through ______.
electrodes
What are the standard leads used in a 12-lead EKG?
I, II, III, aVR, aVL, aVF, V1, V2, V3, V4, V5, V6
What does the P wave represent in an EKG?
Atrial depolarization
What does the QRS complex represent in an EKG?
Ventricular depolarization
What does the T wave represent in an EKG?
Ventricular repolarization
Which part of the EKG indicates the time between atrial and ventricular depolarization?
PR interval
What is the normal range for heart rate in beats per minute as measured by EKG?
60 to 100 bpm
True or False: An EKG can be used to detect arrhythmias.
True
What is the significance of ST segment elevation on an EKG?
It can indicate myocardial infarction (heart attack).
Fill in the blank: The ______ is the time it takes for the ventricles to depolarize and repolarize.
QT interval
Which lead is commonly used to monitor the heart rhythm continuously?
Lead II
What does a flat line on an EKG indicate?
Asystole or lack of electrical activity
What is the term for a heart rate less than 60 bpm?
Bradycardia
What is the term for a heart rate greater than 100 bpm?
Tachycardia
True or False: EKG can be performed without any special preparation.
False
What type of EKG is typically used for long-term monitoring?
Holter monitor
What does a U wave represent in an EKG?
Possibly repolarization of the Purkinje fibers
Which condition is characterized by a prolonged QT interval?
Long QT syndrome
Fill in the blank: The ______ is a graphical representation of the electrical activity of the heart over time.
EKG tracing
What might abnormal EKG findings indicate?
Potential heart disease or other medical conditions.
