Plateau pressure (Pplateau) is measured during which phase of the ventilatory cycle?
a. Inspiration
b. End-inspiration
c. Expiration
d. End-expiration
ANS: B
The calculation of compliance requires the measurement of the plateau pressure. This pressure measurement is made during no-flow conditions. The airway pressure (Paw) is measured at end-inspiration. The inspiratory pressure is taken when the pressure reaches its maximum during a delivered mechanical breath. The pressure that occurs during expiration is a dynamic measure-ment and drops during expiration. The pressure reading at end-expiration is the baseline pressure; this reading is either at zero (atmospheric pressure) or at above atmospheric pressure (PEEP).
You might also like to view...
SCENARIOUse this scenario to answer the following question(s).A 47-year-old male was walking across the street when he was struck by an oncoming car. You find him conscious and alert. Your partner has taken spinal restriction, and you ensure that he has no compromise to the airway or circulation. He complains of abdominal pain, back pain, and pain in his left leg. You explain that the ambulance is on the way, and you begin a more detailed exam.When discussing the pain in the back, you also check to see if the patient has feeling and movement in the extremities. You are checking to see if there is injury to the ________ system.
A. nervous B. circulatory C. digestive D. endocrine
A traumatic brain injury (TBI) would most likely be caused by:
A) witnessing fellow soldiers dying. B) accidentally shooting an unarmed civilian. C) nearby explosion of a concussion grenade. D) disappearance of best friend in platoon.
Which of the following procedures should be followed when service testing fire hose?
A. Close all valves as quickly as possible B. Pick up all large-diameter hose before charging it C. Stand away from the discharge valve connection when charging hose D. Connect the hose to discharges on the pump panel side of the apparatus
Which of the following medications, if taken in the last 24 hours, would be a contraindication to administering nitroglycerin?
a. Coumadin b. Aspirin c. Viagra d. Tylenol