Like this study set? Create a free account to save it.

Sign up for an account

Already have a Quizlet account? .

Create an account


the degree to which a measurement can be reproduced


the extent to which a measurement agrees with a standard

3 Types of Errors



unavoidable error but can be minimized


due to a faulty measuring device or a procedural flaw


shift in position of an object due to the viewing angle
most common error made


time spent inhaling


time spent exhaling

I:E Ratio

inspiratory/expiratory ratio

Total Cycle Time

sum of both the I-time and the E-time

I-time/I-time: E-time/I-time

formula for I:E Ratio

Normal I:E Ratio

1:2 or 1:3

COPD I:E Ratio

1:4 or 1:5

Infant I:E Ratio

1:1 or 1:1.5

Normal Breathing Rate

12-20 b/m

Ventilator Breathing Rate

8-12 b/m

Inverse I:E Ratio

when E-time exceeds I-time
only used on patients who have ARDS and the patient must be very heavily sedated

I-time/E-time: E-time/E-time

inverse I:E ratio formula

E-time= 60/RR-I-time

calculating I:E ratio when the respiratory rate and either I-time or E-time is given

1) TCT= 60/RR; 2) I-time= TCT/sum of I:E ratio; 3) E-time= TCT- I-time

calculating the I-time and E-time when TCT and I:E ratio are given

Please allow access to your computer’s microphone to use Voice Recording.

Having trouble? Click here for help.

We can’t access your microphone!

Click the icon above to update your browser permissions and try again


Reload the page to try again!


Press Cmd-0 to reset your zoom

Press Ctrl-0 to reset your zoom

It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.

Please upgrade Flash or install Chrome
to use Voice Recording.

For more help, see our troubleshooting page.

Your microphone is muted

For help fixing this issue, see this FAQ.

Star this term

You can study starred terms together

Voice Recording