Table 2

Airway maximum per cent carbon dioxide at various head angles on five bedding items

Model head angle (degrees)Bedding item
Bean bag cushionSheepskin*Carry cotComforterPillow
0 34.1  (0.6)31.1  (1.5)19.4  (0.6)30.0  (2.2)28.1  (1.2)
15 25.4 (3.4)31.1 (1.2)14.3 (0.9)21.5 (2.5)20.7 (2.9)
30 13.5 (3.2)28.6 (1.0)11.2 (1.4)10.9 (1.1)16.8 (0.6)
45 7.8 (0.9)21.3 (1.2)5.3 (1.1)5.8 (1.0)10.3 (1.5)
60 7.9 (1.5)14.2 (0.8)4.1 (0.1)4.8 (0.9)7.1 (0.2)
75 4.5 (0.8)9.7 (1.9)3.7 (0.1)3.2 (0.1)4.5 (0.1)
902.7 (0.2)6.8 (1.1)3.5 (0.2)2.9 (0.3)3.3 (0.1)
  • Values are mean (SEM) for three replicates of each test. *6.4 cm nap. Items are infant sized and filled with polyester batting.