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A-Hemodynamic
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3 factors that control the bp
heart
blood
vessels
the pump that creates the bp
heart
amt of fluid in the circulatory system will affect the bp
blood
inc in the hr/strength will
inc bp
dec in the hr/strength will
dec bp
excessive fluids will
inc pressure
loss of fluids will
dec press
vessel constriction will
inc press
vessel dilation will
dec pressure
systolic, diastolic and mean arterial pressures MAP are monitored continously by using a
indewelling arterial catheter with a pressure transducer
normal pressure for systolic
120 mm hg
normal pressure for diastolic
80 mm hg
normal pressure for mean
93 mm hg
mean arterial pressure MAP formula
MAP= (2 x diastolic) + systolic / 3
normal value in the teens
right heart problem
CVP
lung problem
PAP
left heart problem
PCWP
normal ranges for CVP
2-6 mm hg
4-12 cmh20
normal ranges for PAP
25/8
normal ranges for PCWP
4-12 mm hg
normal adult cardiac output
4-8 l/min
normal cardiac index
2-4 l/min
monitor does not show the normal dicrotic notch and the catheter is somehow obstructed
pressure dampeninge
increase CVP =
right heart failure
cor pulmonale
tricuspid valve stenosis
increase PAP =
lung disorders
pulm embolism
pulm htn
air embolism
increase PCWP/ decrease Qt
left heart failure
miltral valve stenosis
CHF
hih peep effects
to get rid of fluid, you give
diuretic
the difference btwn the systolic and diastolic pressure
pulse pressure
formula for pulse pressure
sustolic pressure - diastolic
normal value for pulse pressure
40 mm hg
measures the output of the left ventricle to the systemic arterial circulation
cardiac output
stroke vol equation
heart rate x stroke vol
cardiac output formula
qt/ bsa (body surface area)
pressure gradient across the systemic circulation divided by the cardiac output
systemic vascular resistance SVR
SVR formula
(MAP - CVP) / cardiac output
normal value of SVR
< 20 mm hg/l/min or 1600 dynes
to conver mm hg/l to dynes,
multiply by 80
pressure gradient across the pulm circulation divided by cardiac output
pulm vascular resistance PVR
PVR formula
(MAP - PCWP) / cardiac output
normal value of PVR
< 2.5 or 200 dynes
Author
Anonymous
ID
79302
Card Set
A-Hemodynamic
Description
A-Hemodynamic
Updated
2011-04-13T08:34:32Z
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