[abstract] THE HAUKELAND UNIVERSITY HOSPITAL PROSPECTIVE STUDY OF NORWEGIAN OCCUPATIONAL DIVERS - CNS EFFECTS OF DIVING

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[abstract] THE HAUKELAND UNIVERSITY HOSPITAL PROSPECTIVE STUDY OF NORWEGIAN OCCUPATIONAL DIVERS - CNS EFFECTS OF DIVING

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Title: [abstract] THE HAUKELAND UNIVERSITY HOSPITAL PROSPECTIVE STUDY OF NORWEGIAN OCCUPATIONAL DIVERS - CNS EFFECTS OF DIVING
Author: Troland, K; Grunning, M; Skeidsvoll, H; Irgens, E; Thorsen, E
Abstract: BACKGROUND: Several cross-sectional studies have suggested long term effects of diving on the nervous system. The present study is a prospective longitudinal study. MATERIALS AND METHODS: In the period 1994 through 2004, a total of 67 students from 4 classes at the Norwegian Government Diving School were included in a prospective longitudinal study. Participants were given a comprehensive clinical examination at start of school, and at 3 and 6 years after finishing school, including neurological, neurophysiological, neuropsychological and oto-neurological assessments in addition to a comprehensive questionnaire. Diving exposure was assessed through professional diving logbooks, questionnaire and interview-data. Fifty divers had participated in all 3 follow-ups. Based upon their total exposure during the follow-up period participants were divided into a Low (2-200 dives) (n=17), an Intermediate (240-575 dives) (n=12) and a High Exposure group (700-2000 dives) (n=21). The Low Exposure (LE) group then served as controls for the High (HE) and the Intermediate Exposure (IE) groups. Only one diver had experienced saturation diving. Careful assessment revealed only one case of possible DCI (untreatedRESULTS: In the clinical neurological data, there were more abnormal findings at the third follow-up in the HE group. The proportion of marginal or borderline pathological EEGs had increased at third follow-up and there was a marked increase in slow wave compatible with drowsiness at both second and third follow-up. The HE group demonstrated poorer performance on tests of attention, psychomotor speed and mental flexibility as well as tactile perception and motor function over time. The HE group performed significantly poorer than the LE group on measures of attention, motor steadiness and tactual perception at the last follow uCONCLUSIONS: The changes observed, although modest, may suggest long term detrimental effects of diving on the nervous system, even in the absence of DCI.
Description: Undersea and Hyperbaric Medical Society, Inc. (http://www.uhms.org )
URI: http://archive.rubicon-foundation.org/3689
Date: 2006

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

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