norgren recap questions Flashcards
1
Q
normal hr
A
60-100
2
Q
how long is a big box on an EKG?
15 boxes?
30?
A
.2 sec
.2*15 = 3sec
30 boxes = 6 sec
3
Q
first degree heart block
A
longer PR interval
4
Q
second degree heart block type I
A
each PR interval gets longer and longer until you have a PR interval with no QRS following
5
Q
second degree heart block type II
A
impulse is blocked in the bundle of His. Every few beats there will be a missing beat but the PR interval will not lengthen.
6
Q
third degree heart block
A
no atrial impulses are transmitted to ventricles. ventricles generate an escape impulse, around 30-45BPM
7
Q
what should the left atrial pressure be at the end of diastole?
A
close to zero
8
Q
O2 consumption =
the fick principle
A
cardiac output * (oxygenated blood - deoxygenated blood)
