A 50-year-old male with ARDS, height 70 inches, weight 100kg, is on AC/VC with Vt: 400, f: 22, FiO2: 0.70, PEEP: +12. Plateau pressure is 32cmH2O. What's the most appropriate action?

A 35-year-old female, height 65 inches, weight 60kg, with severe asthma is on AC/VC. Current settings: Vt: 350, f: 18, FiO2: 0.50, PEEP: +5. ABG shows respiratory acidosis. What's the best adjustment?

A 60-year-old male with COPD, height 68 inches, weight 75kg, is on AC/VC with Vt: 550, f: 16, FiO2: 0.40, PEEP: +6. Plateau pressure is 28cmH2O. Patient is spontaneously breathing 20 breaths/min. How should ventilation be increased?

A 40-year-old female with pneumonia, height 62 inches, weight 55kg, is on AC/VC. Current settings: Vt: 400, f: 20, FiO2: 0.60, PEEP: +10. Plateau pressure is 35cmH2O. What's the most appropriate action?

A 55-year-old male with ARDS, height 72 inches, weight 90kg, is on AC/VC with Vt: 600, f: 24, FiO2: 0.80, PEEP: +14. ABG shows respiratory alkalosis. What's the best adjustment?

A 45-year-old female with bronchiectasis, height 64 inches, weight 70kg, 2 days post-operative, is on AC/VC. Current settings: Vt: 450, f: 18, FiO2: 0.40, PEEP: +5. Plateau pressure is 24cmH2O. ABG results: ph: 7.36, PaCO2: 62, PaO2: 67, HCO3: 34. What's the most appropriate action?

A 65-year-old male with pulmonary edema, height 69 inches, weight 80kg, is on AC/VC with Vt: 600, f: 20, FiO2: 0.60, PEEP: +10. Plateau pressure is 33cmH2O. What's the most appropriate action?

A 30-year-old female with status asthmaticus, height 66 inches, weight 65kg, is on AC/VC. Current settings: Vt: 350, f: 22, FiO2: 0.50, PEEP: +5. ABG shows severe respiratory acidosis. What's the most appropriate action?

A 70-year-old male with COPD exacerbation, height 68 inches, weight 85kg, is on AC/VC with Vt: 650, f: 14, FiO2: 0.35, PEEP: +5. Plateau pressure is 25cmH2O. ABG shows partially compensated respiratory acidosis. What's the best action?

A 50-year-old female with ARDS, height 63 inches, weight 58kg, is on AC/VC. Current settings: Vt: 300, f: 26, FiO2: 0.90, PEEP: +16. ABG shows hypoxemia. What's the most appropriate adjustment?

What is the normal Vd/VT ratio?

A patient with a traumatic brain injury is being mechanically ventilated. The current ventilator settings are: AC/VC, f: 18, Vt:450, FiO2: 0.5, PEEP: +5. An ABG is obtained with the following results: pH: 7.50, PaCO2: 30, PaO2: 92, HCO3: 25.

Which ventilator settings would achieve a PaCO2 of 40?

A patient with admitted for blunt chest wall trauma is being mechanically ventilated. The current ventilator settings are: AC/VC, f: 14, Vt:400, FiO2: 0.6, PEEP: +10. An ABG is obtained with the following results: pH: 7.25, PaCO2: 52, PaO2: 86, HCO3: 23.

Which ventilator settings would achieve a PaCO2 of 45?

A patient admitted for blunt chest wall trauma is being mechanically ventilated. The current ventilator settings are: AC/VC, f: 14, Vt:400, FiO2: 0.6, PEEP: +10. An ABG is obtained with the following results: pH: 7.25, PaCO2: 52, PaO2: 86, HCO3: 23.

Which ventilator settings would achieve a PaCO2 of 45?

A patient admitted for CHF exacerbation is being mechanically ventilated. The current ventilator settings are: AC/VC, f: 14, Vt:400, FiO2: 0.6, PEEP: +10. An ABG is obtained with the following results: pH: 7.25, PaCO2: 52, PaO2: 86, HCO3: 23.

What would the set rate have to be changed to in order to achieve a PaCO2 of 40?

A patient admitted for altered mental status is being mechanically ventilated. The current ventilator settings are: AC/VC, f: 17, Vt: 625, FiO2: 0.4, PEEP: +8. An ABG is obtained with the following results: pH: 7.59, PaCO2: 26, PaO2: 82, HCO3: 25.

What would the tidal volume have to be changed to in order to achieve a PaCO2 of 35?

A female patient (68-kg IBW) is being ventilated with PC-CMV, f = 14/min, PIP = 18 cm H2O, TI = 1.0 s, T_E = 3.0 sec. The flow scalar is noted to be returning to baseline. The patient’s measured VT is 680 mL. ABG results on these settings are: pH 7.51, PaCO2 29 mm Hg, HCO₃^- 24 mEq/L.

The most appropriate action to take is which of the following?

A male patient (67-kg IBW) is intubated and ventilated with PC-CMV, f = 18/min, set PIP = 22 cm H2O, resulting in a VT of 500 mL.

The ABG results on this setting are: pH 7.35, PaCO2 45 mm Hg, and HCO₃^- 23 mEq/L. Later that day on the same settings, the ABG results are: pH 7.29, PaCO2 52 mm Hg, and  HCO₃^- 23 mEq/L with an exhaled VT of 320 mL.

The most appropriate action at this time is which of the following?