Which of the following modes of mechanical ventilation would best ...

[MirandaLo]

Which of the following modes of mechanical ventilation would best provide a mandatory minimal minute ventilation suitable for weaning a PMV patient?
 
  A. VC-SIMV
  B. PCIRV
  C. APRV
  D. PRVC

Question 2

The therapist working in an LTAC is preparing to wean a PMV patient. What type of protocol should the therapist use for weaning this patient?
 
  A. No consensus exists about the best weaning protocol to use for these patients.
  B. The therapist should use high-rate SIMV.
  C. Low-rate SIMV along with pressure support ventilation should be used.
  D. CPAP at 5 to 7 cm H2O would benefit this type patient better.

[TheNamesImani]

Answer to Question 1

ANS: D
A. Incorrect response: See explanation D
B. Incorrect response: See explanation D.
C. Incorrect response: See explanation D.
D. Correct response: When attempting to wean a PMV patient from mechanical ventilation, if the delivery of a set minute ventilation is imperative, either volume, or pressure assist-control, or possibly pressure-regulated volume control modes may be beneficial. Because a mandatory minimum minute ventilation can be delivered within specific pressure limits, PRVC may be particularly useful if a lack of staffing restricts in-house after-hours coverage of PMV patients.

Answer to Question 2

ANS: A
A. Correct response: No consensus yet exists about the best weaning strategy or protocol for PMV patients. Generally, most clinicians agree that alternating periods of ventilatory support with advancing periods of spontaneous breathing is the best current strategy of weaning PMV patients.
B. Incorrect response: See explanation A.
C. Incorrect response: See explanation A.
D. Incorrect response: See explanation A.