Calculate the static compliance given the following clinical ...

[kamilo84]

Calculate the static compliance given the following clinical data: tidal volume 600 mL, peak in-spiratory pressure (PIP) 40 cm H2O, plateau pressure (Pplateau) 30 cm H2O, positive end-expiratory pressure (PEEP) 15 cm H2O,
 
  and tubing compliance (CT) 2 mL/cm H2O.
  a. 14.5 mL/cm H2O
  b. 38 mL/cm H2O
  c. 55 mL/cm H2O
  d. 58 mL/cm H2O

Question 2

A patient-ventilator system check reveals the following information: peak inspiratory pressure (PIP) 32 cm H2O, positive end-expiratory pressure (PEEP) 12 cm H2O, plateau pressure (Pplateau) 20 cm H2O,
 
  inspiratory time (TI) 1 second, and set frequency 12/min. Calculate the mean airway pressure.
  a. 4 cm H2O
  b. 8 cm H2O
  c. 12 cm H2O
  d. 14 cm H2O

[gabrielle_lawrence]

Answer to Question 1

ANS: B
Static compliance = tidal volume (VT)  (Pplateau  PEEP)  CT/(Pplateau  PEEP) = 600  (30  15)  2/30  15 = 570/15 = 38 mL/cm H2O.

Answer to Question 2

ANS: D
Total cycle time (TCT) = 60/frequency = 60/12 = 5. (P-macron)aw = (PIP  PEEP)  (TI/TCT) + PEEP = (32  12)  (1/5) + 12 = (20  0.2) + 12 = 14 cm H2O.

[kamilo84]

Excellent

[smrtceo]

Gracias!