cvp placement and monitoring

Question 1

name 3 (of 4) physical potential complications/mishaps in CVP’s

Answer 1

• pneumo
• infection
• bleeding
• carotid cannulation (need vas surgeon to remove)

Question 2

what does the a wave in a cvp waveform signfy?

Answer 2

Atrial contraction

Question 3

what does the c wave in a cvp waveform signify?

Answer 3

Cuspid (ie tricuspid) elevation during early vent contraction

Question 4

what does the v wave in a cvp waveform signify?

Answer 4

venous return against a closed tricuspid valve.

Question 5

what are the two descent waves in a CVP? describe each

Answer 5

X descent: downward displacement during ventricular systole (ie volume of RV reduced due to blood being ejected into pulm art)
Y descent: tricuspid valve opening during diastole–ie Releases RA and vena cava pressure established when tricuspid was closed.

Question 6

what are the 3 port colors and fxn on a CVP catheter

Answer 6

Blue: transduce CVP (just proximal to tip)
Brown: fluid admin (at tip)
white: medication infusion line (most proximal)

Question 7

CVP contraindications (name 3 of the 4)

Answer 7

• renal cell tumor extending into the right atrium
• fungating tricuspid valve vegetation
• ipsilateral carotid endarterectomy
• relative contraindications in coag (cuz cant apply direct art pressure should it get damaged)