Homework 2a

 

1)         a/A =   150      = 62%

                        243.2

 

            PA02      = (755-47) x .4 –( 32)

                                                    (.8)

                        = (708) x .4 – (32 x 1.25)

                                 283.2 – 40 = 243. 2

 

2)         FI02         = 100 + 32       = 161.2   + 40

                         .62      .8                    708

                         (755-47)

                        = .28 or 28%

 

3)         VT       = VE/F = 15L = .75L or 750cc

                                     20

 

  1. VD Anat = 80 kg x 2.2 = 176 lbs x 1cc lb = 176cc

Ett

 

  1. VD /VT = 32-25 = 22%

      32

 

  1. VD phis = VT x VD/VT = 750cc x .22 = 164cc

 

 

  1. VA = VT - VD phis = 750cc – 164 = 586cc

 

586 x 20 = 11, 720cc = 11.72L

8.  VA                          

or VE - VDphis   = 15L - (464 x 20)

                        = 15L – 3.28L

                        = 11.72L

 

  1. VD Anat  (pt trached)= 176cc x. .5 = 88cc

 

  1. ABC Int – normal pH originally metabolic acidosis WITH partial resp compensation AND hyperoxia

 

  1. a) vent D ’s ß RR or VT-RR better as pt 80 kg

Vt(800-1200)

return PaCO2 to normal

b) FI02 to .28

c) Packed RBC’s, Blood transfusion Ý Hb/Hct improve oxygenation.

 

CB/dc

Homework 2a