lecture 11 rhythm of the heart Flashcards
1
Q
where does the electrical system start
A
SAN
2
Q
what is the SAN influenced by
A
sympathetic and parasympathetic
3
Q
after SAN
A
AVN
4
Q
what happens at the AVN
A
electrical impulses paused
5
Q
after AVN
A
purkinje
6
Q
where do you see slow AVN conduction on ECG
A
P-R
7
Q
bradycardia
A
less than 60bpm
8
Q
tachycardia
A
more than 100 bpm
9
Q
parasympathetic affact
A
slows
10
Q
sympathetic effect
A
speeds up
11
Q
very fit people heart rate
A
high vagal tone
active parasympathetic
low heart rate
12
Q
brady cardia, normal QRS distance and P wave
A
sinus bradycardia
13
Q
no P wave normal QRS distance bradycardia
A
heart block
14
Q
bradycardia, normal QRS, normal P wave, long PR
A
first degree heart blcok
15
Q
why might you have first degree heart block
A
old
beta blockers
