This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: During a helium dilution test for functional residual capacity, you notice that it takes 19 min for ... (Read 67 times)

ts19998

  • Hero Member
  • *****
  • Posts: 531
on: Jul 16, 2018
During a helium dilution test for functional residual capacity, you notice that it takes 19 min for equilibration between the gas concentrations in the spirometer and the patient's lungs. Based on this information, what can you conclude?
 
  a. The patient has restrictive lung disease.
  b. The spirometer is leaking helium.
  c. The patient has obstructive lung disease.
  d. Insufficient oxygen was added to the system.

Question 2

A patient has an expired minute ventilation of 14.2 L and a ventilatory rate of 25/min. What is the average VT?
 
  a. 568 ml
  b. 635 ml
  c. 725 ml
  d. 410 ml


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Joy Chen

  • Sr. Member
  • ****
  • Posts: 354
Reply #1 on: Jul 16, 2018
Answer to Question 1

ANS: C
Patients with obstructive lung disease may require up to 20 min to equilibrate because of slow gas mixing in the lungs.

Answer to Question 2

ANS: A
An alternate approach is to measure the total volume of air exhaled for 1 min (E) and then divide by the breathing frequency (f) counted during the same period. The following formula can be used to calculate the tidal volume: VT = E/f.


ts19998

  • Member
  • Posts: 531
Reply 2 on: Jul 16, 2018
:D TYSM

scikid

  • Member
  • Posts: 300
Reply 3 on: Yesterday
Great answer, keep it coming :)

« previous next »
 

Did you know?

Women are two-thirds more likely than men to develop irritable bowel syndrome. This may be attributable to hormonal changes related to their menstrual cycles.

Did you know?

Chronic marijuana use can damage the white blood cells and reduce the immune system's ability to respond to disease by as much as 40%. Without a strong immune system, the body is vulnerable to all kinds of degenerative and infectious diseases.

Did you know?

Astigmatism is the most common vision problem. It may accompany nearsightedness or farsightedness. It is usually caused by an irregularly shaped cornea, but sometimes it is the result of an irregularly shaped lens. Either type can be corrected by eyeglasses, contact lenses, or refractive surgery.

Did you know?

Walt Disney helped combat malaria by making an animated film in 1943 called The Winged Scourge. This short film starred the seven dwarfs and taught children that mosquitos transmit malaria, which is a very bad disease. It advocated the killing of mosquitos to stop the disease.

Did you know?

The average adult has about 21 square feet of skin.

An example of an EHR screen used to order a laboratory test. An example of an EHR screen used to order a laboratory test.
Badly burned exhaust valve. A compression test could have detected a problem, and a cylinder ... Badly burned exhaust valve. A compression test could have detected a problem, and a cylinder ...
Cortical EEG recorded during epileptic attacks. Notice that each trace is characterized by epileptic ... Cortical EEG recorded during epileptic attacks. Notice that each trace is characterized by epileptic ...
Heel-to-shin test Heel-to-shin test
Allen’s test Allen’s test
The fluctuation test of Luria and Delbrück The fluctuation test of Luria and Delbrück
Video: Febrile Seizure

For a complete list of videos, visit our video library