« previous next »

Author Question: The most common concentration of heliox is ______________________________. a. 50 helium:50 oxygen ... (Read 73 times)

swpotter12

  • Hero Member
  • *****
  • Posts: 527
on: Jul 16, 2018
The most common concentration of heliox is ___________________ ___________.
 
  a. 50 helium:50 oxygen
  b. 60 helium:40 oxygen
  c. 70 helium:30 oxygen
  d. 80 helium:20 oxygen

Question 2

An 80 He:20 O2 mixture is being delivered to an asthmatic patient by a nonrebreather mask through an oxygen flow meter set at 8 L/min. What is the actual flow delivered to the patient?
 
  a. 10 L/min
  b. 12 L/min
  c. 14 L/min
  d. 18 L/min


Swizqar

  • Sr. Member
  • ****
  • Posts: 357
Reply #1 on: Jul 16, 2018
Answer to Question 1

ANS: D
The most commonly used concentration of heliox is 80:20 (80 helium and 20 oxygen). This mixture provides the greatest amount of helium, and therefore the lowest density gas, without providing subambient levels of oxygen. Concentrations as low as 50 have been used effectively in patients with large airway obstructions.

Answer to Question 2

ANS: C
The conversion factor for an 80:20 heliox mixture is 1.8. 8  1.8 = 14.4 L/min.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

There are major differences in the metabolism of morphine and the illegal drug heroin. Morphine mostly produces its CNS effects through m-receptors, and at k- and d-receptors. Heroin has a slight affinity for opiate receptors. Most of its actions are due to metabolism to active metabolites (6-acetylmorphine, morphine, and morphine-6-glucuronide).

Did you know?

The newest statin drug, rosuvastatin, has been called a superstatin because it appears to reduce LDL cholesterol to a greater degree than the other approved statin drugs.

Did you know?

Over time, chronic hepatitis B virus and hepatitis C virus infections can progress to advanced liver disease, liver failure, and hepatocellular carcinoma. Unlike other forms, more than 80% of hepatitis C infections become chronic and lead to liver disease. When combined with hepatitis B, hepatitis C now accounts for 75% percent of all cases of liver disease around the world. Liver failure caused by hepatitis C is now leading cause of liver transplants in the United States.

Did you know?

The liver is the only organ that has the ability to regenerate itself after certain types of damage. As much as 25% of the liver can be removed, and it will still regenerate back to its original shape and size. However, the liver cannot regenerate after severe damage caused by alcohol.

Did you know?

Patients who have been on total parenteral nutrition for more than a few days may need to have foods gradually reintroduced to give the digestive tract time to start working again.

The pH scale and the relative acidities of common substances The pH scale and the relative acidities of common substances
Ectopic pregnancies. (a) An ectopic pregnancy may occur in any of the locations shown. Interstitial Ectopic pregnancies. (a) An ectopic pregnancy may occur in any of the locations shown. Interstitial
How Oxygen-16 Becomes More Concentrated in Glacial Ice How Oxygen-16 Becomes More Concentrated in Glacial Ice
A Listing of Repeat Units for 10 of the More Common Polymeric Materials A Listing of Repeat Units for 10 of the More Common Polymeric Materials
Comparison of Portion Sizes of Common Foods Comparison of Portion Sizes of Common Foods
What is the concentration? What is the concentration?
Video: Cellular slime mold life cycle Animation

For a complete list of videos, visit our video library