CHAPTER 21 — Recompression Therapy
21-41
Treatment Table 6
1.
Descent rate - 20 ft/min.
2.
Ascent rate - Not to exceed 1 ft/min. Do not compensate
for slower ascent rates. Compensate for faster rates by
halting the ascent.
3.
Time on oxygen begins on arrival at 60 feet.
4.
If oxygen breathing must be interrupted because of CNS
Oxygen Toxicity, allow 15 minutes after the reaction has
entirely subsided and resume schedule at point of
interruption (see paragraph 21-5.5.6.1.1).
5.
Table 6 can be lengthened up to 2 additional 25-minute
periods at 60 feet (20 minutes on oxygen and 5 minutes
on air), or up to 2 additional 75-minute periods at 30 feet
(15 minutes on air and 60 minutes on oxygen), or both.
6.
Tender breathes 100 percent O2 during the last 30 min. at
30 fsw and during ascent to the surface for an unmodified
table or where there has been only a single extension at
30 or 60 feet. If there has been more than one extension,
the O2 breathing at 30 feet is increased to 60 minutes. If
the tender had a hyperbaric exposure within the past 12
hours an additional 60-minute O2 period is taken at 30
feet.
Figure 21-8. Treatment Table 6.
Treatment Table 6 Depth/Time Profile
Time at Depth (minutes)
Total Elapsed Time:
285 Minutes
4 Hours 45 Minutes
(Not Including Descent Time)
60
3
20
20
20
30
60
60
30
5
5
5
15
15
45
30
15
0
Depth
(fsw)
Ascent Rate
1 Ft/Min.
Descent Rate
20 Ft/Min.
Ascent Rate
1 Ft/Min.
