Cardiac Tests & Misc.
12 lead ekg
What is the primary pacemaker of the heart?
SA node
The extra 30% of blood pushed through to the ventricles is known as what?
atrial kick
a rhythm that occurs in healthy, athletes most commonly
What do the terms tachycardia and bradycardia mean?
Brady less than 60 and tachy more than 100
This procedure involves passing a tube through the esophagus to get a better view of the heart
TEE
What is the secondary pacemaker of the heart?
AV node
What vessel feeds into the right atrium?
superior vena cava
Second degree type 1 block is also known as?
Wenkebach or Mobitz 1
What is the most common dysrhythmia in adults?
Afib
If you see ST elevation on leads V2, V3, and V4 with elevated cardiac enzymes what condition does this patient probably have?
STEMI
What is the normal duration for the QRS (how many boxes or seconds)?
0.10 to 0.12
The chambers on the top of the heart are called what?
Atria
Can you determine the PR interval of a complete heart block?
No, P's and QRS's do not match up
Name 2 things that can cause sinus tachycardia
anxiety, exercise, drug use, fever, pain, dehydration
What heart surface is viewed by leads I, AVL, V5, V6
Lateral
What is the normal PR interval?
less than 0.20
Name the main heart valves
aortic, pulmonic, tricuspid, mitral
Where do the pacer spikes occur if the patient is dual paced?
One before the P and one before the QRS
What rhythm has a 'saw tooth' appearance?
A flutter
What heart surface is viewed by looking at leads II, III, and AVF?
Inferior
What does the PR interval represent?
The time it takes for the impulse to get from the SA node to the ventricle
What are the purpose of heart valves?
To not allow reflux
When reviewing an ekg, how do you determine the atrial rate?
count P to P
T or F: The QRS complex in a ventricular dysrhythmia is narrow?
F, it is wider than 0.12