Which of the following mechanical goals need to be met to ...

[audie]

Which of the following mechanical goals need to be met to minimize the risk of VILI while providing for the patient's gas exchange needs during mechanical ventilation? I. provide enough PEEP to recruit recruitable alveoli II. provide enough PEEP to inflate normal alveoli to compensate for atelectatic alveoli III. deliver a PEEP-Vt combination that minimizes overdistention of healthy alveoli IV. administer a PEEP-Vt combination that affords a Pao2 >90 mm Hg and a Paco2 between 30 and 50 mm Hg
 
  A. I only
  B. IV only
  C. I, III only
  D. II, IV only

Question 2

What is the purpose for providing lung protective ventilatory strategies?
 
  A. to limit inspiratory time
  B. to maintain patient-ventilator synchrony
  C. to limit tidal stretch and end-inspiratory stretch
  D. to provide a mean airway pressure that maintains an Sao2 >90

[Mochi]

Answer to Question 1

ANS: C
A. Incorrect response: See explanation C.
B. Incorrect response: See explanation C.
C. Correct response: The two mechanical goals that are sought to be achieved while providing the mechanically ventilated patient with suitable gas exchange are: (1) provision of enough PEEP to recruit the recruitable alveoli, and (2) avoidance of PEEP-Vt combinations that unnecessarily overdistends healthy lung regions.
D. Incorrect response: See explanation C

Answer to Question 2

ANS: C
A. Incorrect response: See explanation C.
B. Incorrect response: See explanation C.
C. Correct response: The rationale behind lung protective ventilatory strategies is to limit tidal stretching and end-inspiratory stretching of lung tissue.
D. Incorrect response: See explanation C

[audie]

Gracias!

[Jossy]

Thanks for the timely response, appreciate it