Formulas Flashcards

1
Q

Renal clearance?

A

= (UxV) / P

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Clearance of inulin is equal to what?

A

GFR

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Clearance of PAH is equivalent to what?

A

RPF

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

FF =

A

GFR / RPF

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

RBF =

A

RPF / (1-Hct)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Filtered Load = ?

A

GFR x P

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Excretion rate = ?

A

V x U

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

FeNa = ?

A

(PCr x UNa) / (UCr x PNa)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Physiologic dead space VD = ?

A

VT x [(PaCO2 - PECO2) / PaCO2]

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Ventilation (VA) = ?

A

VE - VD

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Minute Ventilation (VE) = ?

A

VT x RR

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Alveolar ventilation (VA) = ?

A

(VT - VD) x RR

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

O2 content = ?

A

(1.34 x Hb x SaO2) + (.003 x PaO2)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

PVR = ?

A

(PPA - PLA) / CO

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

PAO2 = PIO2 (150) - what?

A

PaCO2 / 0.8

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What is the normal A-a gradient?

Increased gradient could mean what?

A

10-15

Hypoxemia due to R–>L shunt, V/Q mismatch, fibrosis

17
Q

Loading dose = ?

A

Css x Vd

Larry David’s CV (curriculum vitae)

18
Q

Maintenance dose = ?

A

Css x Cl

Montgomery Community college

19
Q

Vd = ?

A

[Drug] / [plasma]

20
Q

T1/2 = ?

A

(.7 x Vd) / Cl