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Okuläre Druckbelastung und Barotrauma. Studie an 15 Sporttauchern


Senn, Peter; Helfenstein, Ulrich; Senn, Maria L; Schmid, Martin K; Schipper, Isaak (2001). Okuläre Druckbelastung und Barotrauma. Studie an 15 Sporttauchern. Klinische Monatsblätter für Augenheilkunde, 218(4):232-6; discussion 237.

Abstract

BACKGROUND During SCUBA-diving, relative changes of the pressure in the diving mask, compared to the environmental pressure, are transmitted to the eye and to the periocular tissue. Barotrauma results from lack of pressure equilibration. MATERIAL AND METHODS In 15 divers (6 experienced, 9 beginners) the pressure difference (delta-p) between inside and outside of the diving mask was measured every second during recreational SCUBA-diving. Data were transmitted wireless to a modified standard diving computer. An overall dive time of 323 minutes was analysed. RESULTS Mean delta-p was 14.8 mbar (-44 to , std.dev. +/- 9), it was not dependent on the diving depth (r2 = 0.0004). Delta-p oscillated between 0 and 25 mbar (0-19 mm Hg), parallel to respiration. Negative delta-p values were 9.5 times more frequent in beginners than in experienced divers. Negative pressure peaks (changes > or = 10 mbar for more than 6 sec) occurred in the beginner group exclusively (p = 0.01). CONCLUSIONS During SCUBA diving, ocular tissues undergo oscillating changes of environmental pressure, parallel to respiration. This may be important in eyes with previous surgery. Pressure peaks, leading to severe ocular barotrauma, are easily avoidable.

Abstract

BACKGROUND During SCUBA-diving, relative changes of the pressure in the diving mask, compared to the environmental pressure, are transmitted to the eye and to the periocular tissue. Barotrauma results from lack of pressure equilibration. MATERIAL AND METHODS In 15 divers (6 experienced, 9 beginners) the pressure difference (delta-p) between inside and outside of the diving mask was measured every second during recreational SCUBA-diving. Data were transmitted wireless to a modified standard diving computer. An overall dive time of 323 minutes was analysed. RESULTS Mean delta-p was 14.8 mbar (-44 to , std.dev. +/- 9), it was not dependent on the diving depth (r2 = 0.0004). Delta-p oscillated between 0 and 25 mbar (0-19 mm Hg), parallel to respiration. Negative delta-p values were 9.5 times more frequent in beginners than in experienced divers. Negative pressure peaks (changes > or = 10 mbar for more than 6 sec) occurred in the beginner group exclusively (p = 0.01). CONCLUSIONS During SCUBA diving, ocular tissues undergo oscillating changes of environmental pressure, parallel to respiration. This may be important in eyes with previous surgery. Pressure peaks, leading to severe ocular barotrauma, are easily avoidable.

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Additional indexing

Other titles:Ocular barostress and barotrauma. A study of 15 scuba divers
Item Type:Journal Article, refereed, original work
Communities & Collections:04 Faculty of Medicine > Epidemiology, Biostatistics and Prevention Institute (EBPI)
Dewey Decimal Classification:610 Medicine & health
Language:German
Date:April 2001
Deposited On:04 Mar 2015 16:00
Last Modified:05 Apr 2016 19:09
Publisher:Georg Thieme Verlag
ISSN:0023-2165
Publisher DOI:https://doi.org/10.1055/s-2001-14919
PubMed ID:11392268

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