Table 3.

Median difference in the percentage of total possible expired tidal volume between each pair of 3 bag-valve-mask hand-sealing techniques.

Comparisons	Median Difference, %	95% CI
All 5 min
1H–2H*	−47	−62 to −34
1H–m2H*	−56	−65 to −29
2H–m2H	−0	−2 to 2
First 4 min
1H–2H*	−45	−59 to −33
1H–m2H*	−54	−65 to −28
2H–m2H	−1	−2 to 1
First 3 min
1H–2H*	−47	−60 to −32
1H–m2H*	−52	−67 to −28
2H–m2H	−1	−2 to 2
First 2 min
1H–2H*	−47	−59 to −30
1H–m2H*	−51	−68 to −28
2H–m2H	−0	−2 to 1
First 1 min
1H–2H*	−46	−59 to −25
1H–m2H*	−53	−66 to −20
2H–m2H	−1	−4 to 2

1H, 1-Handed BVM technique; 2H, 2-handed BVM technique; m2H, modified 2-handed BVM technique.

^*One subject was missing data on 1-handed BVM because of a failure in the recording instrument transmitting data during the session; thus, only 51 subjects were analyzed.