« previous next »

Author Question: The most common concentration of heliox is ______________________________. a. 50 helium:50 oxygen ... (Read 58 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?

Though Candida and Aspergillus species are the most common fungal pathogens causing invasive fungal disease in the immunocompromised, infections due to previously uncommon hyaline and dematiaceous filamentous fungi are occurring more often today. Rare fungal infections, once accurately diagnosed, may require surgical debridement, immunotherapy, and newer antifungals used singly or in combination with older antifungals, on a case-by-case basis.

Did you know?

Vaccines cause herd immunity. If the majority of people in a community have been vaccinated against a disease, an unvaccinated person is less likely to get the disease since others are less likely to become sick from it and spread the disease.

Did you know?

According to the National Institute of Environmental Health Sciences, lung disease is the third leading killer in the United States, responsible for one in seven deaths. It is the leading cause of death among infants under the age of one year.

Did you know?

Pope Sylvester II tried to introduce Arabic numbers into Europe between the years 999 and 1003, but their use did not catch on for a few more centuries, and Roman numerals continued to be the primary number system.

Did you know?

More than 4.4billion prescriptions were dispensed within the United States in 2016.

Common Gorse Common Gorse
Colorectal cancer. The most common sites of tumor development are shown. Colorectal cancer. The most common sites of tumor development are shown.
Normal oxygen sensor frequency is from about one to five times per second. Normal oxygen sensor frequency is from about one to five times per second.
Common Fluoride Products Common Fluoride Products
A balloon filled with helium gas at 20°C occupies 2.91 L at 1.00 atm. The balloon is immersed ... A balloon filled with helium gas at 20°C occupies 2.91 L at 1.00 atm. The balloon is immersed ...
When strain A and strain B auxotrophs are grown in a common medium When strain A and strain B auxotrophs are grown in a common medium
Video: Transcription—A molecular view

For a complete list of videos, visit our video library