EKG Basics
Which part of the cardiac electrical conduction system is known as the heart's natural pacemaker.
Sinoatrial Node (SA Node)
This arrhythmia causes the atria to quiver instead of contract normally.
What is atrial fibrillation (Afib)?
These blood vessels supply oxygen-rich blood directly to the heart muscle.
coronary arteries
Chest pain is the most common symptom of this condition.
Acute Coronary Syndrome
Acute coronary syndrome is caused by a mismatch between oxygen demand and oxygen _____.
Supply
This structure delays the electrical impulse before the ventricles contract.
Atrioventricular(AV) node
This rhythm is a flatline and is not shockable.
Asystole
This disease is caused by the buildup of fat and plaque inside arteries.
atherosclerosis
Oxygen demand increases when the heart beats faster or works harder, such as during this activity.
Exercise
An EKG on a 50 y/o PT shows a heart rate of around 120 bpm. What condition is this?
Tachycardia
Which part of the conduction system sends the electrical impulse to the ventricles after the AV node?
Bundle of His & Purkinje Fibers
This treatment delivers a shock immediately in oder to restart the heart.
Defibrillation
Working harder increases the heart's need for this
oxygen
During exercise, the heart's oxygen ______ increases.
demand
What medication can be injected intravenously (into a vein) to restart the heart? hint: injected intramuscularly to treat anaphylaxis
Epinephrine
Electrical activity is caused by the movement of these across cell membranes.
Ions
This arrhythmia has a sawtooth pattern on the EKG.
Atrial flutter
When the fibrous cap tears, blood contacts the fatty core and forms one of these.
a blood clot
These three conditions make up the ACS spectrum.
unstable angina, NSTEMI, and STEMI
How long is the PR interval?
0.12-0.20 seconds
This wave represents atrial depolarization.
P Wave
This implanted device can detect and treat VTach or VFib.
AICD/ICD
Pain that occurs even while resting is called this.
unstable angina
A stable plaque rarely ruptures because it has this protective feature.
thick fibrous cap
A patient has a slow heart rate that needs long-term treatment. Which device helps prevent bradycardia and asystole?
Pacemaker