CV disorders 3 - ECMO, dopamine

Question 1

Pre-oxygenator O2 sat higher than SpO2 indicates _____ in VV-ECMO.

Answer 1

re-circulation

Question 2

explain recirculation in VV-ECMO

Answer 2

oxygenated blood is sucked into the drainage cannula before reaching systemic circulation

Question 3

2 options to decrease recirculation (VV-ECMO)

Answer 3

reposition the drainage cannula; decrease ECMO blood flow rate

Question 4

What is the transmembrane pressure gradient (ECMO)?

Answer 4

difference between pre- and post-oxygenator pressures

Question 5

Increased transmembrane pressure gradient indicates _____. (ECMO)

Answer 5

clot in the oxygenator

Question 6

VA-ECMO is indicated for pts w/ _____.

Answer 6

cardiogenic shock

Question 7

Lower mortality was found w/ norepinephrine vs. dopamine in subgroup analysis of pts w/ cardiogenic shock in this trial

Answer 7

SOAP II

Question 8

Norepinephrine has a lower risk of _____ than dopamine, as shown in multiple trials.

Answer 8

tachyarrhythmias

Question 9

To avoid air embolism during CVC removal, pt should be in this position

Answer 9

Trendelenberg or flat