Table
From: Pulmonary function indices in spontaneously breathing subjects
Venturi mask | Large nasal catheter | ||||||||
|---|---|---|---|---|---|---|---|---|---|
O2 % | O2/atm l/min | ||||||||
24 | 28 | 40 | 0/15 | 3/12 | 7.5/7.5 | 10/5 | 15/0 | 30/0 | |
ρO2 (A-a)(kPa) | 3.42 | 3.68 | 6.00 | 3.46 | 4.49 | 9.83 | 6.29 | 11.32 | 13.92 |
ρO2 (a/A) | 0.82 | 0.83 | 0.83 | 0.79 | 0.83 | 0.78 | 0.87 | 0.82 | 0.83 |
ρO2 [(A-a)/a] | 0.22 | 0.21 | 0.22 | 0.28 | 0.23 | 0.33 | 0.15 | 0.22 | 0.21 |
ρO2 (a)/PO2 (I) | 62 | 62 | 68 | 59 | 64 | 65 | 70 | 71 | 72 |
Pshunt | 0.02 | 0.04 | 0.03 | 0.04 | 0.05 | 0.06 | 0.06 | 0.06 | 0.07 |