Library

feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Der Anaesthesist 49 (2000), S. 302-316 
    ISSN: 1432-055X
    Keywords: Schlüsselwörter Tauchunfall ; Dekompressionserkrankung ; Dekompressionskrankheit ; arterielle Gasembolie ; Hyperbare Sauerstofftherapie ; Key words Diving accident ; Decompression illness ; Decompression sickness ; Arterial gas embolism ; Hyperbaric oxygen therapy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Abstract Decompression injuries are potentially life-threatening incidents, generated by a rapid decline in ambient pressure. Although typically seen in divers, they may be observed in compressed air workers and others exposed to hyperbaric environments. Decompression illness (DCI) results from liberation of gas bubbles in the blood and tissues. DCI may be classified as decompression sickness (DCS) or arterial gas embolism (AGE), depending on where the gas bubbles lodge. DCS occurs after longer exposures to a hyperbaric environment with correspondingly larger up-take of inert gas. DCS may be classified into type 1 with cutaneous symptoms and musculoskeletal pain only or type 2 with neurologic and/or pulmonary symptoms as well. AGE usually results from a pulmonary barotrauma, and with cerebral arterial involvement, the symptoms are similar to a stroke. The most important therapy, in the field, is oxygen resuscitation with the highest possible concentration and volume delivered. The definitive treatment is rapid recompression with hyperbaric oxygen therapy. Additional therapeutic measures are discussed.
    Notes: Zusammenfassung Der schwere Tauchunfall ist ein potentiell lebensbedrohliches Ereignis, verursacht durch raschen Abfall des Umgebungsdrucks, der bei Tauchern und anderweitig überdruckexponierten Personen beobachtet wird. Hervorgerufen durch die Bildung freier Gasblasen im Blut und Geweben kann die Dekompressionserkrankung (DCI) abhängig vom Entstehungsmechanismus in Dekompressionskrankheit (DCS) und arterielle Gasembolie (AGE) unterschieden werden. Die DCS tritt nach längerem Aufenthalt im Überdruck und entsprechender Inertgasaufsättigung auf. Die AGE ist typischerweise die Folge eines pulmonalen Barotraumas, die Symptomatik ist bei zerebralem Befall der eines Schlaganfalls ähnlich. Wichtigste Sofortmaßnahmen sind die schnellstmögliche Gabe von Sauerstoff in höchstmöglicher Konzentration und die Volumentherapie. Wichtigste weiterführende Maßnahme ist die schnellstmögliche Rekompression in einer Therapiedruckkammer mit hyperbarem Sauerstoff. Der Transport der Verunfallten sollte möglichst erschütterungsfrei, bei Lufttransport ohne weitere Reduktion des Umgebungsdrucks erfolgen. Weitere, ergänzende Therapiemaßnahmen werden kontrovers diskutiert.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 2
    ISSN: 1573-2932
    Keywords: acidification ; Brown trout ; calcium ; density ; juveniles ; streams
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract We examined the relationship between young brown trout ( Salmo trutta) density in lake tributaries, and water chemistry and habitat variables. The study was carried out during the autumn in three acidic, softwater river systems in western and southwestern Norway; Gaular and Vikedal (1987–1993) and Bjerkreim (1988–1993). The streams had mean calcium concentrations of 0.35 mg L-1 (Gaular), 0.52 mg L-1 (Vikedal) and 0.84 mg L-1 (Bjerkreim). The concentration of inorganic Al was generally low, with mean values of 8.40 (Gaular), 22.22 (Vikedal) and 43.36 μg L-1 (Bjerkreim). In multiple regressions that involved different water chemistry variables, brown trout density correlated best with calcium concentration and with a combination of calcium and pH; the Ca2+:H+ ratio. In Vikedal and Gaular, calcium explained 51 and 57%, respectively, of the variability in brown trout densities. Althoug alkalinity exhibited the best correlation with brown trout density in Bjerkreim ( r2=0.33), it was similar to that of the model that included all major ions plus pH. The Ca2+:H+ ratio had a larger effect for variability in brown trout density in Gaular (r2=0.66) than calcium alone. In Vikedal and Bjerkreim, the Ca2+:H+ ratio also correlated with brown trout density, but considerably less than in Gaular. The predictive power of habitat variables was much lower than that of water chemistry; the single most important factors were altitude in Gaular (r2=0.22), mean water temperature in Vikedal (r2=0.11) and depth SD (index of heterogeneity) in Bjerkreim (r2=0.07). Models that included both habitat and water chemistry variables showed that the density of young brown trout was predicted primarily by calcium concentrations in Gaular (r2=0.75) and Vikedal (r2=0.54), as opposed to pH in Bjerkreim (r2=0.25). Habitat had low effect in all three river systems (r2=0.01–0.04). The final model explained 86, 68 and 32%, respectively, of the variability in brown trout density in the three catchments. Thus, water chemistry variables seem to be factors that limit the density of young brown trout in acidic softwater streams.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...