EKG Basics
How many leads are used in a standard 12-lead EKG?
What is 10 electrodes
This structure initiates the normal heartbeat.
What is the SA node
Normal sinus rhythm heart range.
What is 60-100 bpm
This wave represents atrial depolarization.
What is the P wave.
A patient with sinus bradycardia and dizziness - first nursing action?
What is assess blood pressure and symptoms
Each small box on EKG paper represents how many seconds?
What is 0.04 seconds
The AV node delays the impulse to allow ventricular filling. True or False?
What is true
Irregularly irregular rhythm with no P waves.
What is atrial fibrillation
Normal PR interval range.
What is 0.12-0.20 seconds.
A-fib with RVR and hypotension - priority intervention?
What is synchronized cardioversion
Each large box represents how many seconds?
What is 0.20 seconds
This bundle carries impulses down the interventricular septum.
What is the Bundle of His
Sawtooth pattern of atrial activity.
What is atrial flutter.
The QRS complex represents what?
What is ventricular depolarization
Chest pain with ST elevation indicates what?
What is myocardial infarction
This artifact is caused by patient movement or shivering?
What is muscle tremor artifact.
These fibers cause ventricular contraction.
What are purkinje fibers
Wide, bizarre QRS complexes at a rapid rate.
What is ventricular tachycardia
Prolonged QT interval increases risk for this lethal rhythm.
What is torsades de pointes
Asystole is treated with defibrillation. True or false?
What is false.
Before placing EKG electrodes, this nursing action helps ensure accurate readings and reduces artifact.
What is cleaning/drying the skin, shaving excess hair if needed.
Blood supply to the SA node most commonly comes from this artery.
What is the right coronary artery.
Chaotic rhythm with no identifiable waves; a cardiac arrest rhythm.
What is ventricular fibrillation
Absence of this wave in atrial fibrillation.
What is the P wave.
Patient becomes pulseless with V-tach - next step?
What is defibrillation and CPR