Thermal increment provided by inhalation rewarming from hypothermia
Deutscher übersetzter Titel: | Waermezuwachs nach Unterkuehlung durch Inhalations-Aufwaermen |
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Autor: | Morrison, J.B.; Conn, M.L.; Hayward, J.S. |
Erschienen in: | Journal of applied physiology |
Veröffentlicht: | 46 (1979), 6, S. 1061-1065, Lit. |
Format: | Literatur (SPOLIT) |
Publikationstyp: | Zeitschriftenartikel |
Medienart: | Gedruckte Ressource |
Sprache: | Englisch |
ISSN: | 8750-7587, 0021-8987, 0161-7567, 1522-1601 |
Schlagworte: | |
Online Zugang: | |
Erfassungsnummer: | PU197906009848 |
Quelle: | BISp |
Abstract
To quantify the core temperature gain derived from inhalation rewarming, 10 subjects were immersed in seawater (mean temperature 12 degrees C) until a 2 degrees C drop in rectal temperature occurred, and were then rewarmed by breathing hot saturated air at 45 degrees C for 30 min. Each subject was rewarmed once breathing air and once rebreathing a controlled fraction of expired air adjusted to produce a hyperventilation of 50 l/min. After 30 min of rewarming mean rectal temperature had increased 0.39 degrees C in subjects breathing air compared with 0.77 degrees C of those hyperventilating. Corresponding gains in tympanic temperatures were 1.1 and 1.5 degrees C, respectively. Calculations indicate that the additional heat input with hyperventilationyielded a core (rectal) temperature gain of 5.1 x 0,0001 degrees C/l. It is concluded that each additional 10 l/min of ventilation of hot saturated air will increase the rate of core rewarming from hypothermia by approximately 0.3degrees C/h. Verf.-Referat