SOLUTION 100% VERIFIED
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What is the flow of conduction in the heart? correct answers SA Node --> AV Node -->
Bundle of His --> Purkinje fibers
Identify the parts of the conduction system correct answers Left side: SA node, AV
node, Right bundle branch
Right side: Bundle of His, Left bundle branch, Left anterior division, Left posterior
division
In which AV block should we use Atropine with caution? correct answers 2nd degree
TYPE 2
What is the special quality of the heart in relation to other muscles in the body? correct
answers The heart generates its own electrical impulses
What is the normal HR when the SINUS node is in charge of heart conduction? correct
answers 60-100 bpm
What is the normal HR when the AV node is in charge of heart conduction? correct
answers 40-60 bpm
What is the normal HR when the Purkinje Fibers is in charge of heart conduction?
correct answers 20-40 bpm
What does the P-wave represent? correct answers Atrial depolarization
What does the QRS complex represent? correct answers Ventricular depolarization
What does the T wave represent? correct answers Ventricular repolarization
Why is there no wave representing atrial repolarization? correct answers Atrial
repolarization is covered by the ventricular depolarization wave
What is the danger of a prolonged QT interval? correct answers Mailed to types of
ventricular tachycardia
One small box correct answers 0.04 seconds
One large box correct answers 0.20 seconds (5 tiny boxes)
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Normal PR interval correct answers 0.12-0.20 seconds
Normal QRS complex correct answers 0.04-0.10 seconds
Normal QT interval correct answers Less than 0.46 seconds
J Point correct answers Junction between end of QRS complex and start of T wave
To measure ST segment correct answers Begin one small square past J point
5 Critical Rhythms correct answers Ventricular Fibrillation
Ventricular Tachycardia
Asystole
3rd Degree AV block
ST elevation
General Interventions correct answers Always assess the patient first
RRT and PCP or Code
12-lead EKG
Cardiac enzymes
Patent IV
Initial Interventions for ST elevation correct answers M: morphine
O: oxygen
N: nitroglycerin
A: aspirin
- prepare for Cath lab
6 Basic Steps for Rhythm Interpretation correct answers HR
Rhythm
P-wave
P-R interval
QRS width
Other findings
Effects of Dysrhythmias on CO correct answers CO=HR X SV
Dysrhythmias decrease CO
Atrial Kick comprises 30% of CO
ST Segment correct answers Elevation: myocardial infarction/injury
Depression: myocardial ischemia
Normal Sinus Rhythm correct answers Regular