Low Flow Article

Question 1

Whats considered lower Vt?

Answer 1

6-8mL/kg

Question 2

Using high ______ on a vent will increase risk of barotrauma

Answer 2

plateau pressures

Question 3

T/F
Vent-induced lung injury can cause systemic injury including remote organ injury

Answer 3

True
localized inflammation occurs w/ systemic release of inflammatory cytokines

Question 4

General anesthesia affects lung function primarily by

Answer 4

lose of muscle tone (risk atelectasis)

Question 5

NM blockade increase the risk of lung ____

Answer 5

atelectasis

Question 6

benefits of low TV

Answer 6

-improve pulmonary mechanics & oxygenation
-reduced inflammatory mediators
-shorter postoperative ventilation

Question 7

low TV without PEEP promotes

Answer 7

atelectasis

Question 8

optimal PEEP for intraoperative lung protection

Answer 8

remains unclear

Question 9

populations that benefit from higher levels of PEEP

Answer 9

obese
lap surgery w/ gas insufflation

Question 10

possible drawbacks to low Vt

Answer 10

-atelectasis
- pt-vent dyssynchrony
-increase pt effort during spontaneous ventilation (fatigue/injury)

Question 11

considerations when using low Vt

Answer 11

-procedure type/duration
-current lung compliance/Dz
-will I stress the lung?
-MV or breathing spontaneously

Question 12

existing evidence suggests…

Answer 12

low Vt w/ low-moderate PEEP is safe & likely beneficial for most pts

Question 13

what is still under debate re: low Vt ventilation?

Answer 13

-optimal driving pressure & PEEP
-benefits of lung recruitment maneuvers

Question 14

Whats considered high Vt?

Answer 14

10-15mL/kg