Pt Assessment Flashcards
0
Q
WOB
A
^ P * ^ V
1
Q
Smoking history
A
Pack years = # of packs/day * # of years smoked
2
Q
MV
A
VT * RR
3
Q
VA alv min ventilation
A
( VT - VD ) *RR
4
Q
VD/VT
A
PACO - peco2 / Paco2 * 100
5
Q
Dead space
A
VD/VT * VT
6
Q
Alv o2 tension
A
Pao2 = (PB-PH20) * fio2 - paco2/ .8
Or paco2 * 1.25
7
Q
Alv art o2 gradient
P(A-a) o2
A
PAo2 - Pao2
8
Q
Arterial oxygen content
CaO2
A
(Hb* 1.34 * Sao2) represents RBC +
(PaO2 * 0.003) Oxygen in plasma
9
Q
Mixed venous oxygen content
CvO2
A
(Hb * 1.34 * Svo2) o2 in RBC +
(Pv o2 * .003) o2 in plasma
10
Q
Art-Ven O2 content difference
C(a-v) O2
A
CaO2 - CvO2
11
Q
SaO2 estimate
A
PaO2 + 30
12
Q
P F ratio
A
PaO2 / Fio2
13
Q
Mean art press
MAP
A
( 2 * diastolic ) + systolic / 3
14
Q
Pulse pressure
A
Systolic - diastolic
