Hey! Sign in to get help with your study questionsNew here? Join for free to post

Calculating the tidal volume ATPS (L)

Announcements Posted on
Take our survey to be in with the chance of winning a £50 Amazon voucher or one of 5 x £10 Amazon vouchers 28-05-2016
  1. Offline

    If we want to calculate the ATPS, and were given for example that the total volume of expired air (L) was 30.6 L provided that the air was collected over an interval of 3-minutes, will ATPS in this case be: 30.6 L / 3 min = 10.2 ?

  2. Offline

    If we have the following values:

    - Number of breaths in one-minute = 16
    - Exhaled minute volume ATPS (L min-1) = 5.50

    Will the tidal volume ATPS (L) be ---> 5.50 / 16 = 0.34 ?

  3. Offline

    If we were given the following values:

    - Oxygen concentration of expired air = 16.7%
    - Exhaled minute volume ATPS (L min-1) = 5.67

    And, want to calculate the "Oxygen exhalation rate ATPS (ml min-1)", would it be as follows?

    5.67 X 16.7% = 0.95

    But, since the value has to be in (ml min-1), we should multiply by 1000, so, the final result will be 950 ml min-1

    Is it correct this way?



Submit reply


Thanks for posting! You just need to create an account in order to submit the post
  1. this can't be left blank
    that username has been taken, please choose another Forgotten your password?
  2. this can't be left blank
    this email is already registered. Forgotten your password?
  3. this can't be left blank

    6 characters or longer with both numbers and letters is safer

  4. this can't be left empty
    your full birthday is required
  1. Oops, you need to agree to our Ts&Cs to register
  2. Slide to join now Processing…

Updated: November 1, 2011
TSR Support Team

We have a brilliant team of more than 60 Support Team members looking after discussions on The Student Room, helping to make it a fun, safe and useful place to hang out.

Today on TSR

Don't be a half-term hermit

How to revise this week and still have a life

What's your biggest deadly sin?
Quick reply
Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.