[abstract] BUBBLE EVALUATION CODE FOR DOPPLER ULTRASONIC DECOMPRESSION DATA.

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[abstract] BUBBLE EVALUATION CODE FOR DOPPLER ULTRASONIC DECOMPRESSION DATA.

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Title: [abstract] BUBBLE EVALUATION CODE FOR DOPPLER ULTRASONIC DECOMPRESSION DATA.
Author: Kisman, KE; Masurel, G; Guillerm, R
Abstract: A bubble evaluation code has been developed for the evaluation of bubble signals present in Doppler ultrasonic signals from the precordial region of the chest. Based on experience obtained during the extensive use of CERTSM instrumentation, three parameters describing bubble signals were identified for each of two conditions, one where the subject is at rest and one where he flexes his limbs. These parameters have been codified and described for use by dive monitors. In addition, bubble grades have been defined which are similar in form to Spencer's (Spencer, M.P., J. Appl. Physiol., 40, 229 (1976)) grading scheme. A correlation table has been constructed relating the bubble code to the bubble grades. The code contains more information but the bubble grade is a useful operational parameter and may be related to previously published results. During the JANUS IV open-sea dive to 500 m and during ongoing simulated dives, it was found that the code is more objective and easier to learn than the grading scheme in use previously at CERTSM. The code format is also ideal for digital signal processing studies which are in progress. Tests are underway to evaluate the inter-and intra-individual variations in the use of the code and length of time required to teach the code to inexperienced operators.
URI: http://archive.rubicon-foundation.org/4237
Date: 1978

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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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