How to calulate tidal volume and ventilation rates?

[raid517]

Hi, how do I calculate the tidal volume and ventilation rates for two test subjects from the number of observed breaths per minute taken during an experiment?

 

I also need to calculate the stroke volume of the heart and the cardiac output, but I have no clue how to do this?

 

The relevant details are as follows:

 

Subject 1

 

Breaths per minute at rest:

 

24

 

Breath per Minute during exercise:

 

29

 

Heart Rate during rest:

 

97

 

Heart Rate during exercise

 

165

 

Subject 2

 

Breaths per minute at rest:

 

16

 

Breath per Minute during exercise:

 

22

 

Heart Rate during rest:

 

74

 

Heart Rate during exercise

 

23

 

Any help anyone can offer would be greatly appreciated.

---

Merged post follows:

Consecutive posts merged

Edited with weight info in case needed.

 

Subject 1

 

Breaths per minute at rest:

 

24

 

Breath per Minute during exercise:

 

29

 

Heart Rate during rest:

 

97

 

Heart Rate during exercise

 

165

 

Age 27

 

Weight 84KG

 

Subject 2

 

Breaths per minute at rest:

 

16

 

Breath per Minute during exercise:

 

22

 

Heart Rate during rest:

 

74

 

Heart Rate during exercise

 

23

 

Age 17

 

 

Weight 72KG

 

BTW can this even be done? I can't find any info on the web anywhere about it.

[Penny]

I think there is a published chart to predict a person's vital capacity when given age and height. However, without knowing the inspiratory and expiratory reserve volume, the vital capacity won't be very useful.

 

Determining volumes (i.e. tidal volume and stroke volume) from rates seems a little opaque to me. I'm not sure if this could be done either...

Edited May 20, 2010 by Penny
Grammatical error =p

[ewmon]

All the answers you seek require data on volume, which you have not shown.