Author Question: Given the following information, calculate the ventilation time constant. PIP 40 cm H2O; Pplateau 30 ... (Read 38 times)

Brittanyd9008

  • Hero Member
  • *****
  • Posts: 500
Given the following information, calculate the ventilation time constant. PIP 40 cm H2O; Pplateau 30 cm H2O; Raw 1.3 cm H2O/L/sec; CL 0.2 ml/cm H2O
 
  A. 0.8 second
  B. 0.26 second
  C. 1.3 seconds
  D. 3.9 seconds

Question 2

Normal respiratory muscles generally do not fatigue with work less than _________.
 
  A. 4 to 6 joules/minute
  B. 10 to 12 joules/minute
  C. 15 to 20 joules/minute
  D. 20 to 25 joules/minute



aadams68

  • Sr. Member
  • ****
  • Posts: 317
Answer to Question 1

ANS: B
A. Incorrect response: See explanation B.
B. Correct response: The ventilation time constant is calculated by multiplying the airway resistance by the lung compliance. That is,
(Raw)  (CL) = ventilation time constant
(1.3 cm H2O/L/sec)(0.2 ml/cm H2O) = 0.26 second
C. Incorrect response: See explanation B.
D. Incorrect response: See explanation B.

Answer to Question 2

ANS: D
A. Incorrect response: See explanation D.
B. Incorrect response: See explanation D.
C. Incorrect response: See explanation D.
D. Correct response: The normal range for work done by the respiratory muscles is 4 to 6 joules/minute. Normal respiratory muscles generally do not fatigue with work less than 20 to 25 joules/minute.



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

Throughout history, plants containing cardiac steroids have been used as heart drugs and as poisons (e.g., in arrows used in combat), emetics, and diuretics.

Did you know?

According to the FDA, adverse drug events harmed or killed approximately 1,200,000 people in the United States in the year 2015.

Did you know?

When blood is deoxygenated and flowing back to the heart through the veins, it is dark reddish-blue in color. Blood in the arteries that is oxygenated and flowing out to the body is bright red. Whereas arterial blood comes out in spurts, venous blood flows.

Did you know?

The first oncogene was discovered in 1970 and was termed SRC (pronounced "SARK").

Did you know?

The term bacteria was devised in the 19th century by German biologist Ferdinand Cohn. He based it on the Greek word "bakterion" meaning a small rod or staff. Cohn is considered to be the father of modern bacteriology.

For a complete list of videos, visit our video library