How do you calculate tidal volume in a cat?
Tidal volume is the total amount of air in your lungs that is inhaled/exhaled at one point. Tidal volume is found by using a machine to calculate it. Or, it is:Insiratory reserve volume+expiratory reserve volume+tidal volume+residual volume.REVISIONYour definition of tidal volume is correct...it is the amount of air that moves in or out of the lungs during normal inspiration or expiration, but the equation you gave (IRV + Vt +ERV + RV) is for Total Lung Capacity.I don't believe that there is an equation to calculate tidal volume. It can be calculated, however, by subtracting your average ERV (expiratory reserve volume) from your average EC (expiratory capacity). Using a spirometer, perform the procedure to get your expiratory capacity. Do this 3 times and figure the average. Then perform the procedure to get your expiratory reserve volume and repeat 3 times to figure your average. Then, as I mentioned in the 1st line of this paragraph, subtract your average ERV from your average EC.