2nd Dysrhythmia Below Atria Lecture Flashcards
1
Q
Describe Q wave duration and heigh for MI (infarction)
A
> 0.04 sec duration Q wave
At least 1/4 the height of The R wave in that same QRS complex
2
Q
Which MI is more likely to reinfarct
A
Non Q-wave
Subendocardial MI
3
Q
Increased PVC causes what?
A
Increased filling time
Decreased preload
Decreased stroke volume
Drop in CO
4
Q
When is PVC more dangerous?
A
Couplet
Triplettes
Multifocal
> 6 minutes
5
Q
What can PVC progress into?
A
V tach or V fib
6
Q
Light headed syncope chest pain
Weak threads pulse
Disorientation
Are signs for what
A
V tachycardia
7
Q
What causes st segment elevation
A
Acute MI (infarction)
8
Q
What causes ST depression or flattening?
A
Myocardial ISCHEMIA
