Observation of increased venous gas emboli after wet dives compared to dry dives.

摘要: Introduction Testing of decompression procedures has been performed both in the dry and during immersion, assuming that results can be directly compared. To test this, aim present paper was to compare number venous gas bubbles observed following a short, deep shallow, long air dive hyperbaric chamber actual dives open water. Methods Fourteen experienced male divers participated study; seven wet 24 metres' sea water (msw) for 70 minutes; 54 msw 20 minutes. Decompression followed Buhlmann procedure. Immediately dive, pulmonary artery bubble formation monitored two hours. The were graded according method Eftedal Brubakk. Results All completed protocol, none them showed any signs sickness. During observation period, shallow dives, increased from 0.1 per cm ² after 1.4 dive. Following 2.4 Both are highly significant (P = 0.0001 or less). Conclusions study shown diving produces significantly more than diving. rather conservative procedure, indicates accepted standard nevertheless induce considerable stress. We suggest should at keeping as low possible.