1. During mechanical ventilation of a patient with COPD, the PaCO2 = 58 mm Hg and the minute ventilation = 5.5 L/min. The desired PaCO2 for this patient is 45 mm Hg. To what should the minute ventilation be changed? [Formula for Desired VT = Known PaCO2 ⋅ Known VT / Desired PaCO2] a. 4.3 L/min b. 4.8 L/min c. 6.6 L/min d. 7.1 L/min

1. During mechanical ventilation of a patient with COPD, the PaCO2 = 58 mm Hg and the minute ventilation = 5.5 L/min. The desired PaCO2 for this patient is 45 mm Hg. To what should the minute ventilation be changed? [Formula for Desired VT = Known PaCO2 ⋅ Known VT / Desired PaCO2] a. 4.3 L/min b. 4.8 L/min c. 6.6 L/min d. 7.1 L/min

Cardiopulmonary Anatomy & Physiology

7th Edition

ISBN:9781337794909

Author:Des Jardins, Terry.

Publisher:Des Jardins, Terry.

Chapter20: High-pressure Environments And Their Effects On The Cardiopulmonary System

Section: Chapter Questions

Problem 2RQ: If an individual fully inhales to a total lung capacity of 4.5 L at sea level (760 mm Hg) and dives...

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If an individual fully inhales to a total lung capacity of 4.5 L at sea level (760 mm Hg) and dives to a depth of 66 feet, the lungs will be compressed to about A. 1.0 L B. 1.5 L C. 2.0 L D. 2.5 L
3. At sea level, a diver has the following: • Lung volume: 6 L • Pressure within the lungs: 755 mm Hg If this individual dives to a depth of 99 feet and compresses the lung volume to 2 L, what will be the pressure within the diver's lungs? A. 960 mm Hg B. 1420 mm Hg C. 1765 mm Hg D. 2265 mm Hg
At sea level, the alveolar water vapor pressure in normally about A. 0.2 mm Hg B. 47 mm Hg C. 0.0 mm Hg D. 40 mm Hg
If a patient is receiving an FIO2 of 0.60 on a day when the barometric pressure is 725 mm Hg, and if the Paco2 is 50 mm Hg, what is the patients alveolar oxygen tension (PAo2)? A. 177 mm Hg B. 233 mm Hg C. 344 mm Hg D. 415 mm Hg
Which of the following forced expiratory measurements reflects the status of medium-sized to small-sized airways? A. FEF200-1200 B. PEFR C. MVV D. FEF25%-75%
If the radius of a bronchial airway, which has a driving pressure of 2 mm Hg, is reduced by 16 percent of its original size, what will be the new driving pressure required to maintain the same gas flow through the bronchial airway? A. 4 mm Hg B. 8 mm Hg C. 12 mm Hg D. 16 mm Hg
The total lung capacity is calculated using which of the following formulas? residual volume + tidal volume + inspiratory reserve volume residual volume + expiratory reserve volume + inspiratory reserve volume expiratory reserve volume + tidal volume + inspiratory reserve volume residual volume + expiratory reserve volume + tidal volume + inspiratory reserve volume
20. At end-expiration, is A. 0 mm Hg. B. 2 mm Hg. C. 4 mm Hg. D. 6 mm Hg.