FREE RESPIRATORY THERAPY AND STUDY GAMES ABOUT

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FREE RESPIRATORY THERAPY AND STUDY GAMES ABOUT

CALCULATION EXAM QUESTIONS

Actual Qs and Ans Expert-Verified Explanation

This Exam contains:

-Guarantee passing score -20 Questions and Answers -format set of multiple-choice -Expert-Verified Explanation

Question 1: What is the formula for Combined Gas law?

Answer:

PV = nRT

Question 2: What is the formula for Boyle's law?

Answer:

P1V1 = P2V2

Question 3: A 78 year old male with a history of COPD has a respiratory rate of 20 and tidal volume of 650mL. What would his minute volume be in Liters?

Answer:

13L/minute

Question 4: What is the formula for minute ventilation?

Answer:

minute volume = respiratory rate x tidal volume

Question 5: An H cylinder is half full (full = 2200) and the patient is receiving oxygen via nasal cannula at 3L/min. How long will the cylinder last in minutes? in hours?

Answer:

1151 minutes. 19.18 hours Question 6: What is the patient's VD/VT if their PaCO2 is 40 mm HG with a mixed expired CO2 of 28 mm Hg?

Answer:

0.3 Question 7: What is the formula for alveolar partial pressure of carbon dioxide (PACO2)?

Answer:

PACO2 = VCO2 X 0.863 divided by VA(alveolar ventilation per minute) Question 8: A 36 year old female with a respiratory rate of 12 and tidal volume of 500mL. What would the minute volume be in Liters?

Answer:

6L/minute Question 9: What is the patient's VD/VT if their PaCO2 is 58 mm HG with a mixed expired CO2 of 32 mm Hg?

Answer:

0.45

Question 10: What is the formula for dead space/tidal volume ratio?

Answer:

VD/VT = PaCO2 - PeCo2/PaCo2 Question 11: If a patient has smoked 2 packs of cigarettes daily for the past 35 years, what would their pack year history be?

Answer:

70 pack years

Question 12: What is a normal carbon dioxide production?

Answer:

200mL/min Question 13: 20 year old male weighing 160 pounds with a respiratory rate of 12, tidal volume of 500 mL. What would his alveolar ventilation/minute be?

Answer:

4080mL/min Question 14: A patient with a respiratory rate of 12, tidal volume of 500mL and weight is unknown. What would the alveolar ventilation per minute be?

Answer:

4200mL/min

Question 15: What is the formula for Charles law?

Answer:

V1/T1 = V2/T2

Question 16: If a patient's carbon dioxide production is normal and their PACO2 is 80mmHg, what would their alveolar ventilation be?

Answer:

2.15 L

Question 17: The ventilatory parameters for 68kg man with a respiratory rate of 20, tidal volume 480 mL, vital capacity 2.7L. What would his alveolar ventilation/min be in Liters?

Answer:

6.6L/min Question 18: If a patient's carbon dioxide production is normal and their PACO2 is 60mmHg, what would their alveolar ventilation be?

Answer:

2.88 L

Question 19: What is the formula for alveolar ventilation per minute?

Answer:

Alveolar ventilation/min = respiratory rate x alveolar ventilation (tidal volume - dead space volume) Question 20: An E cylinder is at 1400psi and the flow rate is 2.5L/minute. How many minutes will the tank last?

Answer:

156.8 minutes