[abstract] DECOMPRESSION ILLNESS AT SHALLOW DEPTH.

Rubicon Research Repository/Manakin Repository

[abstract] DECOMPRESSION ILLNESS AT SHALLOW DEPTH.

Show full item record


Title: [abstract] DECOMPRESSION ILLNESS AT SHALLOW DEPTH.
Author: Shimada, K; Kobavashi, K; Ohashi, N; Kohno, M; Murai, T; Akivama, S; Nishizawa, A; Gotoh, Y; Sekiguchi, C
Abstract: INTRODUCTION: Current no-decompression air dive tables are considered to be safe enough. Decompression sickness incident rates reported are 0.065 to 0.009percent (Hempleman). However, divers are not necessarily under strict medical surveillance because of the nature of their operations. We employed intimate pre- and post-dive medical inquiry on tank divers and obtained higher than expected incident rate. METHODS: Forty seven air SCUBA divers, plus five astronauts in the Shuttle Extravehicular Mobility Unit were medically monitored by pre-dive physical exam and pre-/post-dive questionnaire. Mean age was 30.3 (SD=5.5). Four were females. They were encouraged to report any symptoms. Depth recorders (Profile 1000) accompanied 50 dives. Depth of the fresh water tank for extravehicular simulation was 10.5m. SCUBA divers made a 3-min stop at 3m when their dive duration exceeded 120 min. RESULTS: Total number of dives was 32 for astronauts and 641 (29 repetitive) for SCUBA divers. The shortest was 8 min; the longest 181 min; mean 117 min (SD=45). Decompression stops at 3 mfw were made in 318 (47.2percent) dives. Typical work depth recorded was 3 to 6 mfw. We had one case (0.15percent) of upper arm bends and another undefined vertigo case. The former was treated with US Navy Table 5 oxygen treatment. Prognosis was uneventful for both cases. CONCLUSIONS: Relatively high incidence rate was observed at shallow depth, probably due to close medical monitoring. 1) Vigilance is required for health care of air divers at 10.5m. 2) Countermeasure option would be application of advanced individual screening with methods such as patent foramen ovale detection.
Description: Undersea and Hyperbaric Medical Society, Inc. (http://www.uhms.org )
URI: http://archive.rubicon-foundation.org/592
Date: 1998

Files in this item

Files Size Format View
abstract.txt 259bytes Text file View/Open

This item appears in the following Collection(s)

  • UHMS Meeting Abstracts
    This is a collection of the published abstracts from the Undersea and Hyperbaric Medical Society (UHMS) annual meetings.

Show full item record

Browse

My Account