Medical Terminology
Ability of heart muscle to shorten in response to an electrical impulse
Contractility
When the nurse sees a six "sawtooth" beat what arrhythmia is this?
Atrial flutter
The nurse recognizes that cardiac contractions are normally initiated by what
SA node in the RIGHT atrium
How many tiny boxes equals 1 large box?
5
Strip 1
AFIB
Ability of cardiac cells to both receive and transmit an impulse
Conductivity
V fib
O2 and other nutrients are delivered to the myocardium by the
Coronary arteries
The tiniest box on the EKG paper represents how many seconds?
0.04
Strip 2
VTACH
When the heart is shocked from a persistent arrhythmia back into sinus rhythm
Cardioversion
The QRS complex represents depolarization of the _______________
Ventricles
Physical signs of low cardiac output: (4)
Hypotension, fatigue, palpitations, dizziness
In NSR, the PR interval should be __________ seconds
0.12- 0.20
Strip 3
NSR
Hearts ability to contract in a rhythmic pattern is called
Automaticity
What is the purpose of telemetry?
Monitor heart rate and rhythm
Loss of cells in SA nodes
QRS complex should be between _____ and ______ tiny boxes
1 and 3
Strip 4
VFIB
What does bradycardia mean?
Slow heart rate
When the electrical impulse fails to conduct through the AV junction, it causes a __________ ___________ _______________
Complete heart block
What is the purpose of aspirin?
Reduces the formation of blood clots that could cause a heart attack
How long is a standard telemetry strip?
6 seconds
Strip 5
Aflutter