Table 1.

Venous gas emboli scores during step-wise initial ascent from sea level to 24,000 ft and final descent from 24,000 ft to sea level, in conditions H and H–L–H

	Ascent						Descent
	Sea level (pre)	5 kft	10 kft	15 kft	20 kft	24 kft	24 kft	20 kft	15 kft	10 kft	0.5 kft	Sea level (post)
H rest	0 (0)	0 (0)	0 (0)	0 (0)	0 (0)	0 (0)	1.5 (0–3)	1 (0–3)	0 (0–3)	0 (0–3)	0 (0–3)	0 (0–3)
H knee-bends	0 (0)	0 (0)	0 (0)	0 (0)	0 (0)	0 (0–1)	3 (0–4)	3 (0–4)	1.5 (0–4)	0.5 (0–4)	0 (0–3)	0 (0–3)
H–L–H rest	0 (0)	0 (0)	0 (0)	0 (0)	0 (0)	0 (0)	0 (0–2)	0 (0–3)	0 (0–1)	0 (0–1)	0 (0–1)	0 (0–1)
H–L–H knee-bends	0 (0)	0 (0)	0 (0)	0 (0)	0 (0)	0 (0–1)	0 (0–3)	0 (0–3)	0 (0–3)	0 (0–3)	0 (0–3)	0 (0–3)

Values are medians (range); n = 10