9. A male patient (83-kg IBW) is intubated and ventilated with PC-CMV, f = 12/min, set PIP = 28 cm H2O, resulting in a VT of 430 mL. The ABG results on this setting are: pH 7.35, PaCO2 45 mm Hg, and HCO3− 23 mEq/L. Forty-eight hours later on the same settings, the ABG results are: pH 7.54, PaCO2 27 mm Hg, and HCO3 − 21 mEq/L with an exhaled VT of 800 mL. The most appropriate action at this time is which of the following? a. Decrease PIP to 25 cm H2O. b. Decrease PIP to 19 cm H2O. c. Decrease f to 10/min. d. Decrease f to 8/min.

9. A male patient (83-kg IBW) is intubated and ventilated with PC-CMV, f = 12/min, set PIP = 28 cm H2O, resulting in a VT of 430 mL. The ABG results on this setting are: pH 7.35, PaCO2 45 mm Hg, and HCO3− 23 mEq/L. Forty-eight hours later on the same settings, the ABG results are: pH 7.54, PaCO2 27 mm Hg, and HCO3 − 21 mEq/L with an exhaled VT of 800 mL. The most appropriate action at this time is which of the following? a. Decrease PIP to 25 cm H2O. b. Decrease PIP to 19 cm H2O. c. Decrease f to 10/min. d. Decrease f to 8/min.

Cardiopulmonary Anatomy & Physiology

7th Edition

ISBN:9781337794909

Author:Des Jardins, Terry.

Publisher:Des Jardins, Terry.

Chapter6: Oxygen And Carbon Dioxide Transport

Section: Chapter Questions

Problem 1RQ

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Case 2 The fact that the initial pH (7.10) and HCO3- (21 mEq/L) were both lower than expected for an acute increase in the Paco2(70 mm Hg) suggested that there were additional ____________ present in the patients blood.
9. A male patient (83-kg IBW) is intubated and ventilated with PC-CMV, f = 12/min, set PIP = 28 cm H2O, resulting in a VT of 430 mL. The ABG results on this setting are: pH 7.35, PaCO2 45 mm Hg, and HCO3 − 23 mEq/L. Forty-eight hours later on the same settings, the ABG results are: pH 7.54, PaCO2 27 mm Hg, and HCO3− 21 mEq/L with an exhaled VT of 800 mL. The most appropriate action at thistime is which of the following?a. Decrease PIP to 25 cm H2O.b. Decrease PIP to 19 cm H2O.c. Decrease f to 10/min.d. Decrease f to 8/min.
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