[abstract] EFFECT OF CIGARETTE SMOKING ON THE SEVERITY OF DECOMPRESSION ILLNESS (DCI) SYMPTOMS.

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[abstract] EFFECT OF CIGARETTE SMOKING ON THE SEVERITY OF DECOMPRESSION ILLNESS (DCI) SYMPTOMS.

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Title: [abstract] EFFECT OF CIGARETTE SMOKING ON THE SEVERITY OF DECOMPRESSION ILLNESS (DCI) SYMPTOMS.
Author: Buch, DA; Dovenbarger, JA; Uguccioni, DM; EI-Moalem, H; Moon, RE
Abstract: BACKGROUND: Severe DCI could be more likely in cigarette smokers because of airways obstruction or vascular disease. The present study was designed to evaluate the severity of DCI as a function of cigarette smoking in recreational divers. METHODS: We examined all DCI reports recorded in the DAN database from 1989 through 1997. Smoking history was quantified as HEAVY (>15 pack-years), LIGHT (0 to 15 pack-years) and NON (never smoked). DCI symptoms were classified as SEVERE (alteration in consciousness, balance or bladder/bowel control, motor weakness, visual symptoms, convulsions), MODERATE (other neurological symptoms) or MILD (pain, skin or non-specific symptoms). Generalized logits (SAS version 7) were used to model severity as a function of smoking history while accounting for age, gender, dive experience, rapid ascent, fatigue, exercise and alcohol use. AP-value less than 0.05 was considered significant. RESULTS: 4,351 patient data forms were examined, of whom 2,787 were NON, 1,071 were LIGHT and 493 were HEAVY smokers. Percentages as a function of DCI severity are shown in Table 1. 4,268 Cigarette Smoking; DCI Severity, NON, LIGHT, HEAVY; Mild, 19.6, 19.0, 14.0; Moderate, 56.9, 53.8, 49.5; Severe, 23.5, 27.2, 36.5; TOTALS, 100.0, 100.0, 100.0. Raw analysis (chi squared) revealed significant differences among groups (P<10^-8). Odds ratios, accounting for risk factors, are shown in Table 2. Confidence intervals (05%) are in parenthesis. Comparison, Mild vs. Severe, Moderate vs. Severe; Non vs. Light, 1.16 (0.93-1.45), 1.20 (1.001-1.42)*; Non vs. Heavy, 2.38 (1.76-3.23), 1.80 (1.45-2.23)*; Light vs. Heavy, 2.05 (1.46-2.88)*, 1.51 (1.18-1.93)*; * P < .05. CONCLUSIONS: The data suggest that smokers with DCI tend to present with more severe symptoms than their non-smoking counterparts. (NOTE: Aviat Space Environ Med. 2003 Dec;74(12):1271-4. PubMed ID:14692470)
Description: Undersea and Hyperbaric Medical Society, Inc. (http://www.uhms.org)
URI: http://archive.rubicon-foundation.org/6539
Date: 2000

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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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