Equations and Values to Memorize

Question 1

CaO2 for 70kg patient

Answer 1

20mL/O2/dL

Question 2

DO2 for 70kg patient

Answer 2

1,000mL/min

Question 3

VO2 for 70kg patient

Answer 3

250mL/min

Question 4

CVO2 for 70kg patient

Answer 4

15mL/dL

Question 5

DO2 equation

Answer 5

CO x [(Hgb x SaO2 x 1.34) + (PaO2 x 0.003)] x 10 OR
CO x CaO2 x 10

Question 6

CO equation

Answer 6

HR x SV

Question 7

CaO2 equation

Answer 7

(1.34 x Hgb x SaO2) + (0.003 x PaO2)

Question 8

VO2 equation

Answer 8

CO x (CaO2 - CvO2) x 10

Question 9

CvO2 equation

Answer 9

(Hgb x SvO2 x 1.34) + (PvO2 x 0.003)

Question 10

EO2 (oxygen extraction ratio)

Answer 10

25%
VO2/DO2 = 25%
(volume extracted/delivered)

Question 11

Ohms Law Equation

Answer 11

flow = (pressure gradient / resistance)

Question 12

normal SVR

Answer 12

800- 1500 dynes/sec/cm-5

Question 13

MAP equation

Answer 13

= ((CO x SVR ) / 80) + CVP

Question 14

Poiseuilles Law

Answer 14

Q = 3.14R^4change in pressure / 8* viscosity * length
blood flow = (pie x radius to the 4th x av pressure gradient)/ (8 x viscosity x length)

Question 15

How is viscosity related to temperature?

Answer 15

It is inversely proportional

Question 16

EF

Answer 16

[(EDV-ESV)/EDV] x 100

Question 17

SVR

Answer 17

[(MAP-CVP)/CO] x 80

Question 18

SV

Answer 18

CO x (1,000/HR)

Question 19

SVRI

Answer 19

((MAP-CVP)/ 80) x CO

Question 20

PVR

Answer 20

((MPAP-PAOP)/CO) x 80

Question 21

PVRI

Answer 21

((MPAP-PAOP)/CO) x 80

Question 22

PVR normal value

Answer 22

150-250 dynes/second/cm^-5

Question 23

PVRI normal value

Answer 23

250-400dynes/sec/cm^-5 per m^2

Question 24

two variables related by the frank starling mechanism

Answer 24

ventricular volume (filling pressures or EDV) in relation to ventricular output (CO, SV, LVSW, RVSW).
ex) LVEDP and SVR

Question 25

list 3 surrogate measures of LVEDV

Answer 25

LVEDP, LAP, PAOP

Question 26

Law of LaPlace as it relates to LV

Answer 26

wall stress= (intraventricular pressure x radius) / ventricular thickness

Question 27

normal area of aortic valve orifice

Answer 27

2.5-3.5cm^2

Question 28

severe aortic stenosis value

Answer 28

<.8cm^2

Question 29

three values that indicate severe mitral stenosis

Answer 29

valve orifice <1cm^2 (normal 4-6)
transvalvular gradient >10mmHg (LA to LV) and
PASP >50mmHg

Question 30

Coronary Perfusion Pressure (CPP) equation

Answer 30

aortic diastolic pressure - LVEDP or
DBP - PAOP

Question 31

celsius equation

Answer 31

F - 32 * 5/9

Question 32

Fahrenheit equation

Answer 32

C * 1.8 + 32

Question 33

alveolar ventilation=

Answer 33

(Vt-Vd) x RR