[abstract] OXYGEN THERAPY IN THE CLOSED ENVIRONMENT OF THE INTERNATIONAL SPACE STATION

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[abstract] OXYGEN THERAPY IN THE CLOSED ENVIRONMENT OF THE INTERNATIONAL SPACE STATION

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Title: [abstract] OXYGEN THERAPY IN THE CLOSED ENVIRONMENT OF THE INTERNATIONAL SPACE STATION
Author: Beck, G; Bacal, K; Hamilton, D
Abstract: Background: Supplemental oxygen (O2) is often required to treat trauma or acute medical illness. The International Space Station (ISS), like other remote long-duration operational environments, has the potential for acute medical contingencies. The current ISS non-rebreathing mask and mechanical ventilator are limited to delivering pure O2, creating the potential for O2 toxicity. In addition, O2 is a non-regenerable resource and as a result, therapy duration is limited to available supplies. Finally, open-loop devices release large amounts of O2 into the closed volume of the ISS increasing the risk of fire by creating the potential for high-concentration O2 pockets and/or increased mean O2 percentages in the cabin. Method: We developed a model to allow flight surgeons to calculate O2 usage, ISS cabin O2 concentrations, resource limits and O2 toxicity index using data from the published literature and the ISS operational procedures. Results: The computer-based model provides flight surgeons and other ISS operational groups with a real-time tool to track and predict the effects of O2 on the patient and ISS systems. Conclusions: Therapeutic use of 100percent O2 presents a serious constraint to ISS operational groups and will consume significant resources. Oxygen toxicity will manifest itself clinically if patients are managed for periods greater than 12 hours. The effort demonstrates the need to develop a new generation of respiratory devices to provide variable O2 mixtures. This work was supported under contract to NASA, NAS9-97005.
Description: Undersea and Hyperbaric Medical Society, Inc. (http://www.uhms.org )
URI: http://archive.rubicon-foundation.org/1090
Date: 2002

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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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