Central Venous Pressure and PA catheter

Question 1

Normal CVP

Answer 1

2-7 mmHg

Question 2

the filling pressure is used as an indicator for

Answer 2

cardiac volume with the understanding that adequate volumes will generate optimal cardiac contractility

Question 3

three waveforms for cvp and two negative slopes

Answer 3

a,c,v

x,y depressions

Question 4

a wave represents

Answer 4

right atrial pressure increase during the phase of atrial contraction

Question 5

c wave represents

Answer 5

bulging of the closed tricuspid valve into the right atrium during the beginning of ventricular systole

Question 6

x descent

Answer 6

during ventricular systole and corresponds to atrial relaxation

Question 7

v wave

Answer 7

filling of the atrium while the tricuspid valve is closed

Question 8

y descent

Answer 8

tricuspid valve opens and the atrium starts to empty

Question 9

CU of CVP

Answer 9

determine intravascular volume status

Question 10

In A-fib, the a wave will vanish and be replaced with …

Answer 10

more distinguishable c wave

Question 11

tricuspid regurgitation can be diagnosed by

Answer 11

noticing a more prominent C-V wave

Question 12

tamponade will exhibit an elevated

Answer 12

CVP waveform and y descent

Question 13

AV dissociation teh contraction of the atrium against a closed tricuspid valve will eleicit a

Answer 13

enlarged A wave called a “cannon” wave

Question 14

PA catheter is how long

Answer 14

110 cm.

Question 15

Pa catheter has a capacity of

Answer 15

1.5 mL

Question 16

Pa catheter may be used to measure

Answer 16

CO, Mixed venous oxygen tneion, pulmonary arterial and right atrial pressures, and indirectly, LVEDP

Question 17

Complications from PA catheters include

Answer 17

dysrhythmias, catheter knotting, cardiac valve injury, and pulmonary artery rupture

Question 18

Measure of LVEDP, when the mitral valve is open …

Answer 18

the pressure b/w the left atrium and the left ventricle should equalize, allowing the tip of the catheter to register the LVEDP.

Question 19

lvedp values:
normal
larger CO
dyspnea
fluid mvmt into alveoli
frank pulmonary edema

Answer 19

normal: 8-12 mmHg
LARGE CO: 14-18 mmHg
Dyspnea: over 18 mmHg
Fluid mvmt into alveoli: more than 20 mmHg
frank pulm edema: over 30 mmHg

Question 20

Mixed venous oxygen tension is a global rep of

Answer 20

total body oxygen supply and demand

Question 21

normal PvO2 is

Answer 21

about 40 mmHg with a saturation of 75%