DOCSLIB.ORG

2016 March;46(1)

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
2016 March;46(1) Diving and Hyperbaric Medicine The Journal of the South Paci c Underwater Medicine Society and the European Underwater and Baromedical Society Volume 46 No. 1 March 2016 Venous gas emboli and decompression sickness Concensus guidelines for ultrasound in diving research Iatrogenic cerebral gas embolism Scuba diving affects peak expiratory fl ow Effect of blood-thinning drugs on middle ear barotrauma Measuring Eustachian tube function Print Post Approved PP 100007612 ISSN 1833-3516, ABN 29 299 823 713 Diving and Hyperbaric Medicine Volume 46 No. 1 March 2016 PURPOSES OF THE SOCIETIES To promote and facilitate the study of all aspects of underwater and hyperbaric medicine To provide information on underwater and hyperbaric medicine To publish a journal and to convene members of each Society annually at a scienti c conference SOUTH PACIFIC UNDERWATER EUROPEAN UNDERWATER AND MEDICINE SOCIETY BAROMEDICAL SOCIETY OFFICE HOLDERS OFFICE HOLDERS President President David Smart <[email protected]> Jacek Kot <[email protected]> Past President Vice President Michael Bennett <[email protected]> Ole Hyldegaard <[email protected]> Secretary Senior President Douglas Falconer <[email protected]> Costantino Balestra <[email protected]> Treasurer Past President Peter Smith <[email protected]> Peter Germonpré <[email protected]> Education Of cer Honorary Secretary David Wilkinson <[email protected]> Peter Germonpré <[email protected]> Chairman ANZHMG Member-at-Large 2015 John Orton <[email protected]> Karin Hasmiller <[email protected]> Committee Members Member-at-Large 2014 Denise Blake <[email protected]> Robert van Hulst <[email protected]> Simon Mitchell <[email protected]> Member-at-Large 2013 Janine Gregson <[email protected]> Pierre Lafère <[email protected]> Webmaster Liaison Of cer Joel Hissink <[email protected]> Phil Bryson <[email protected]> ADMINISTRATION ADMINISTRATION Membership Honorary Treasurer and Membership Secretary Steve Goble <[email protected]> Patricia Wooding <[email protected]> 16 Burselm Avenue, Hainault, Ilford MEMBERSHIP Essex, IG6 3EH, United Kingdom For further information on SPUMS and to complete a membership Phone & Fax: +44-(0)20-85001778 application, go to the Society’s website: <www.spums.org.au> The of cial address for SPUMS is: MEMBERSHIP c/o Australian and New Zealand College of Anaesthetists, For further information on EUBS and to complete a membership 630 St Kilda Road, Melbourne, Victoria 3004, Australia application, go to the Society’s website: <www.eubs.org> SPUMS is incoprorated in Victoria A0020660B DIVING AND HYPERBARIC MEDICINE <www.dhmjournal.com> Editor: Editorial Board: Michael Davis <[email protected]> Michael Bennett, Australia PO Box 35 Alf Brubakk, Norway Tai Tapu 7645 David Doolette, USA New Zealand Peter Germonpré, Belgium Phone: +64-(0)3-329-6857 Jane Heyworth, Australia Jacek Kot, Poland European (Deputy) Editor: Simon Mitchell, New Zealand Lesley Blogg <[email protected]> Claus-Martin Muth, Germany Editorial Assistant: Neal Pollock, USA Nicky Telles <[email protected]> Monica Rocco, Italy Journal distribution: Martin Sayer, United Kingdom Steve Goble <[email protected]> Erika Schagatay, Sweden David Smart, Australia Journal submissions: Robert van Hulst, The Netherlands Submissions should be made at http://www.manuscriptmanager.com/dhm Diving and Hyperbaric Medicine is published jointly by the South Pacifi c Underwater Medicine Society and the European Underwater and Baromedical Society (ISSN 1833-3516, ABN 29 299 823 713) Diving and Hyperbaric Medicine Volume 46 No. 1 March 2016 1 resources for anyone interested in evidence based medicine. The Editor’s offering The appraisals present critical information about each trial to enable a quick appreciation of the methodology and results. In 2015, a workshop on ultrasound in diving research was They are an introduction to each trial and should not be held in Sweden, at which 27 participants from 12 countries viewed as a substitute for a careful appraisal of the whole hammered out guidelines to provide better standardisation article. The structure and aims of the CAT approach are of methods for both Doppler and echocardiography bubble discussed more fully on the CEBM site and I recommend counts. These guidelines and two papers from the meeting a visit there. Please note that the views expressed in the are published in this issue. The guidelines complement those CATs are those of the individual authors concerned. DHM developed in 2014 for the echocardiographic investigation publishes CATs from HBOevidence from time to time. of persistent foramen ovale in divers. Both guidelines are available on the journal website <www.dhmjournal.com>. Assistance from interested physicians in preparing critical appraisals is welcomed, indeed needed, as there is a Publication of Diving and Hyperbaric Medicine (DHM) considerable backlog (the latest posting is from 2014). There are resources available on the site on how to create a CAT, There has been a lot of discussion recently about improving plus Mike will personally mentor anyone who wants to learn access to the diving and hyperbaric medicine literature how to go about these things; please contact Mike Bennett generally and articles in this journal in particular. There at <[email protected]>. For those simply wishing to is an increasing call for DHM to be available in a usable use and search the site, there is no need to join as an actual electronic form, though many members do not wish to lose member; there are no advantages, only drawbacks! Mike the print copy. Since the renaming of the SPUMS Journal as is very keen to hear from people who want to learn. We DHM in 2006 and the amalgamation of our two societies’ sincerely hope that at least a few of our 900-odd subscribers resources into the Journal in 2008, our publishing policy has will show some enthusiasm for helping grow this potentially been that DHM is a print journal. This policy is now under very valuable resource to support and legitimise our small serious review by the ExComs. The Journal Governance specialty. Hyperbaric medicine is under threat in many Committee (JGC) and I have recommended that a fully countries; the most recent example being the ill-informed, electronic version of DHM be made available to subscribers misrepresentational report in Australia on which David from March 2018. This cannot be done immediately as there Smart commented in his column in the last issue.1 are many decisions to make in the process in a structured, professional manner. Members’ thoughts on what they would Manuscript Manager like to see in an electronic journal are most welcome. DHM has been using an electronic submission process called At its 2015 General Assembly, the EUBS voted to provide Manuscript Manager since the start of 2015. This has proved a pdf-only membership (at a reduced subscription) for full a boon for our of ce processes in managing individual members who did not want a print copy and for Associate and papers through the submission and peer review processes. Student members. As I mentioned in December, this decision Unfortunately a large minority of authors still fail to follow was taken without consultation with EUBS’s co-publishers, the journal’s Instructions to Authors or the submission SPUMS. After protracted discussions between the Presidents process correctly. Since many authors do it perfectly, there and the Editor a compromise has been reached. The pdfs is no excuse for such carelessness. We have been patient will continue to appear on the society websites, but clearly about this for the rst year, but manuscripts not submitted marked for personal use only. All members are reminded in the correct format and using the proper processes will be that articles have a one-year embargo, and distribution in the rejected automatically, to be resubmitted properly. public domain before that time breaches copyright. Reference HBOEvidence 1 Smart D. The Presidents’ pages. Diving and Hyperbaric HBOEvidence <http://hboevidence.unsw.wikispaces.net/> is Medicine. 2015;45:220. a database of ‘Critical Appraisals’ (CATs) of randomised, prospective trials in diving and hyperbaric medicine. It was Michael Davis created and is maintained by Professor Michael Bennett and his colleagues at the Prince of Wales Hospital Diving and Hyperbaric Medicine Unit, Sydney. The critical appraisals Front page photo, taken by Dr Martin Sayer, is of a in this site have been written using CATmaker, developed by diver from the UK National Facility for Scienti c Diving Douglas Badenoch at the Oxford Centre for Evidence-Based using a photoquadrat technique to generate quantitative Medicine (CEBM). This software is highly recommended information of hard-substrata communities. Aquatic and may be ordered on the CEBM website < http://www. Conservation Marine and Freshwater Ecosystems. cebm.net/>. This site has a wealth of information and 2011;21:676-89. 2 Diving and Hyperbaric Medicine Volume 46 No. 1 March 2016 The Presidents’ pages David Smart, President SPUMS SPUMS 2016 in Fiji is shaping up to be another terri c event. The theme “Diver resuscitation in and out of the water” is We are entering a new era in journal production, but as so consistent with the fundamental philosophy of SPUMS. with all change, high quality communication and step-wise Janine Gregson has kicked things off with great energy, implementation is required. The SPUMS Executive voted in handing over the convener role to Douglas Falconer as she October to move to a full electronic version of the Journal goes on Defence leave. Mike Bennett is scienti c convener. by rst issue 2018, and we now look forward to working Thank you team, the Annual Scienti c Meeting is one of with EUBS to achieve this goal. SPUMS’ key reasons for existence, and the voluntary efforts of everyone to produce a world class event every year are SPUMS and EUBS have in place a verbal agreement to greatly appreciated.
Load more

Recommended publications
  • What Chamber Operators Should Know About Ear Barotrauma (And How to Prevent It) Robert Sheffield, CHT and Kevin “Kip” Posey, CHT / June 2018
    LEARN.HYPERBARICMEDICINE.COM International ATMO Education What Chamber Operators Should Know About Ear Barotrauma (and How to Prevent It) Robert Sheffield, CHT and Kevin “Kip” Posey, CHT / June 2018 INTRODUCTION Ear barotrauma (i.e. “ear block”, “ear squeeze”) is the most common complication of hyperbaric treatment. It occurs when the pressure in the hyperbaric chamber is greater than the pressure in the middle ear. It is prevented by patient assessment, patient education, and the appropriate actions of the chamber operator. The chamber operator has an important role in preventing ear barotrauma in hyperbaric patients. OBJECTIVES At the conclusion of this article, the reader will be able to: Describe the anatomy of the middle ear Explain the mechanism of ear barotrauma Describe 3 techniques to equalize middle ear pressure ANATOMY OF THE MIDDLE EAR The middle ear is an air space that separates the external ear canal from the inner ear. The eardrum, called the tympanic membrane (TM), vibrates when sound enters the ear canal. The vibration is transmitted to a series of bones in the middle ear. These bones transmit vibration to another membrane (the oval window) that separates the air‐filled middle ear from the fluid‐filled inner ear, where sound is sensed in the cochlea. The nasopharynx is the area behind the nose and above the palate. The Eustachian tubes open into this area. Because of the location of the Eustachian tube openings, the same things that cause nasal congestion (e.g. allergies, upper respiratory infection) can cause swelling around the opening of the Eustachian tubes, making it more difficult to equalize pressure in the middle ear.
    [Show full text]
  • Hypothermia and Respiratory Heat Loss While Scuba Diving
    HYPOTHERMIA AND RESPIRATORY HEAT LOSS WHILE SCUBA DIVING Kateřina Kozáková Faculty of Physical Education and Sport, Charles University in Prague, Department of Biomedical Labo- ratory Abstract One of the factors affecting length of stay under water of a diver is heat comfort. During scuba diving there is an increased risk of hypothermia. Hypothermia is one of the most life threatening factors of a diver and significantly affects his performance. The body heat loss runs by different mechanisms. One of them is the respiratory mechanism, which is often overlooked. Compressed dry air or other media is coming out from the cylinder, which have to be heated and humidified to a suitable value. Thus the organism loses body heat and consequently energy. Based on literature search the article will describe safe dive time in terms of hypo- thermia in connection to respiratory heat loss. Key words: hypothermia, heat loss, respiration, scuba diving, water environment Souhrn Jedním z faktorů ovlivňujících délku pobytu potápěče pod vodou je tepelný komfort. Během výkonu přístro- jového potápění hrozí zvýšené riziko hypotermie. Hypotermie představuje jedno z nejzávažnějších ohrožení života potápěče a zásadně ovlivňuje jeho výkon. Ke ztrátám tělesného tepla dochází různými mechanismy. Jednou cestou tepelných ztrát je ztráta tepla dýcháním, která je často opomíjená. Z potápěčského přístroje vychází suchý stlačený vzduch nebo jiné médium, který je třeba při dýchání ohřát a zvlhčit na potřebnou hodnotu. Tím organismus ztrácí tělesné teplo a potažmo energii. Tento článek, na základě literární rešerše, popíše bezpečnou dobou ponoru z hlediska hypotermie a v souvislosti se ztrátou tepla dýcháním. Klíčová slova: hypotermie, ztráta tepla, dýchání, přístrojové potápění, vodní prostředí Introduction amount of body heat.
    [Show full text]
  • Public Safety Scuba Diving
    Industry Guide 47 A Guide to Public Safety Diving N.C. Department of Labor Occupational Safety and Health Division N.C. Department of Labor 1101 Mail Service Center Raleigh, NC 27699-1101 Cherie Berry Commissioner of Labor N.C. Department of Labor Occupational Safety and Health Program Cherie Berry Commissioner of Labor OSHA State Plan Designee Kevin Beauregard Deputy Commissioner for Safety and Health Scott Mabry Assistant Deputy Commissioner for Safety and Health Tom Savage Standards Officer Author Acknowledgments A Guide to Public Safety Diving has been prepared with materials and information from the General Industry Standards, 29 CFR 1910, Subpart T—Commercial Diving Operations, and OSHA Instruction CPL 02-00-151 (U.S. Department of Labor, Occupational Safety and Health Administration). This guide also contains information from sources such as U.S. Navy Diving Manual, National Association of Search and Rescue, California Department Fish and Game Diving Safety Manual, and the National Fire Protection Association, NFPA 1670—Standard on Operations and Technical Search and Rescue. Through an existing alliance established between the N.C. Department of Labor’s Occupational Safety and Health Divi- sion and the North Carolina Public Safety Divers’ Association (PSDA), a collaborative effort was established to make this guide possible. The PSDA board of directors provided expertise involving public safety diving in sharing best practices and technical knowledge. A special thanks to Chuck Elgin, North Carolina Underwater Response Team, for his dedication and hard work assisting in the development of this publication. This guide is intended to be consistent with all existing OSHA standards; therefore, if an area is considered by the reader to be inconsistent with a standard, then the OSHA standard should be followed.
    [Show full text]
  • Critical Care in the Monoplace Hyperbaric Chamber
    Critical Care in the Monoplace Hyperbaric Critical Care - Monoplace Chamber • 30 minutes, so only key points • Highly suggest critical care medicine is involved • Pitfalls Lindell K. Weaver, MD Intermountain Medical Center Murray, Utah, and • Ventilator and IV issues LDS Hospital Salt Lake City, Utah Key points Critical Care in the Monoplace Chamber • Weaver LK. Operational Use and Patient Care in the Monoplace Chamber. In: • Staff must be certified and experienced Resp Care Clinics of N Am-Hyperbaric Medicine, Part I. Moon R, McIntyre N, eds. Philadelphia, W.B. Saunders Company, March, 1999: 51-92 in CCM • Weaver LK. The treatment of critically ill patients with hyperbaric oxygen therapy. In: Brent J, Wallace KL, Burkhart KK, Phillips SD, and Donovan JW, • Proximity to CCM services (ed). Critical care toxicology: diagnosis and management of the critically poisoned patient. Philadelphia: Elsevier Mosby; 2005:181-187. • Must have study patient in chamber • Weaver, LK. Critical care of patients needing hyperbaric oxygen. In: Thom SR and Neuman T, (ed). The physiology and medicine of hyperbaric oxygen therapy. quickly Philadelphia: Saunders/Elsevier, 2008:117-129. • Weaver LK. Management of critically ill patients in the monoplace hyperbaric chamber. In: Whelan HT, Kindwall E., Hyperbaric Medicine Practice, 4th ed.. • CCM equipment North Palm Beach, Florida: Best, Inc. 2017; 65-95. • Without certain modifications, treating • Gossett WA, Rockswold GL, Rockswold SB, Adkinson CD, Bergman TA, Quickel RR. The safe treatment, monitoring and management
    [Show full text]
  • THE PHYSICIAN's GUIDE to DIVING MEDICINE the PHYSICIAN's GUIDE to DIVING MEDICINE Tt",,.,,,,., , ••••••••••• ,
    THE PHYSICIAN'S GUIDE TO DIVING MEDICINE THE PHYSICIAN'S GUIDE TO DIVING MEDICINE tt",,.,,,,., , ••••••••••• , ......... ,.", •••••••••••••••••••••••• ,. ••. ' ••••••••••• " .............. .. Edited by Charles W. Shilling Catherine B. Carlston and Rosemary A. Mathias Undersea Medical Society Bethesda, Maryland PLENUM PRESS • NEW YORK AND LONDON Library of Congress Cataloging in Publication Data Main entry under title: The Physician's guide to diving medicine. Includes bibliographies and index. 1. Submarine medicine. 2. Diving, Submarine-Physiological aspects. I. Shilling, Charles W. (Charles Wesley) II. Carlston, Catherine B. III. Mathias, Rosemary A. IV. Undersea Medical Society. [DNLM: 1. Diving. 2. Submarine Medicine. WD 650 P577] RC1005.P49 1984 616.9'8022 84-14817 ISBN-13: 978-1-4612-9663-8 e-ISBN-13: 978-1-4613-2671-7 DOl: 10.1007/978-1-4613-2671-7 This limited facsimile edition has been issued for the purpose of keeping this title available to the scientific community. 10987654 ©1984 Plenum Press, New York A Division of Plenum Publishing Corporation 233 Spring Street, New York, N.Y. 10013 All rights reserved No part of this book may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, microfilming, recording, or otherwise, without written permission from the Publisher Contributors The contributors who authored this book are listed alphabetically below. Their names also appear in the text following contributed chapters or sections. N. R. Anthonisen. M.D .. Ph.D. Professor of Medicine University of Manitoba Winnipeg. Manitoba. Canada Arthur J. Bachrach. Ph.D. Director. Environmental Stress Program Naval Medical Research Institute Bethesda. Maryland C. Gresham Bayne.
    [Show full text]
  • Consensus Conference, the ECHM
    24 Diving and Hyperbaric Medicine Volume 47 No. 1 March 2017 Consensus Conference Tenth European Consensus Conference on Hyperbaric Medicine: recommendations for accepted and non-accepted clinical indications and practice of hyperbaric oxygen treatment Daniel Mathieu, Alessandro Marroni and Jacek Kot Abstract (Mathieu D, Marroni A, Kot J. Tenth European Consensus Conference on Hyperbaric Medicine: recommendations for accepted and non-accepted clinical indications and practice of hyperbaric oxygen treatment. Diving and Hyperbaric Medicine. 2017 March;47(1):24-32.) The tenth European Consensus Conference on Hyperbaric Medicine took place in April 2016, attended by a large delegation of experts from Europe and elsewhere. The focus of the meeting was the revision of the European Committee on Hyperbaric Medicine (ECHM) list of accepted indications for hyperbaric oxygen treatment (HBOT), based on a thorough review of the best available research and evidence-based medicine (EBM). For this scope, the modified GRADE system for evidence analysis, together with the DELPHI system for consensus evaluation, were adopted. The indications for HBOT, including those promulgated by the ECHM previously, were analysed by selected experts, based on an extensive review of the literature and of the available EBM studies. The indications were divided as follows: Type 1, where HBOT is strongly indicated as a primary treatment method, as it is supported by sufficiently strong evidence; Type 2, where HBOT is suggested as it is supported by acceptable levels of evidence; Type 3, where HBOT can be considered as a possible/optional measure, but it is not yet supported by sufficiently strong evidence. For each type, three levels of evidence were considered: A, when the number of randomised controlled trials (RCTs) is considered sufficient; B, when there are some RCTs in favour of the indication and there is ample expert consensus; C, when the conditions do not allow for proper RCTs but there is ample and international expert consensus.
    [Show full text]
  • Diving Safety Manual Revision 3.2
    Diving Safety Manual Revision 3.2 Original Document: June 22, 1983 Revision 1: January 1, 1991 Revision 2: May 15, 2002 Revision 3: September 1, 2010 Revision 3.1: September 15, 2014 Revision 3.2: February 8, 2018 WOODS HOLE OCEANOGRAPHIC INSTITUTION i WHOI Diving Safety Manual DIVING SAFETY MANUAL, REVISION 3.2 Revision 3.2 of the Woods Hole Oceanographic Institution Diving Safety Manual has been reviewed and is approved for implementation. It replaces and supersedes all previous versions and diving-related Institution Memoranda. Dr. George P. Lohmann Edward F. O’Brien Chair, Diving Control Board Diving Safety Officer MS#23 MS#28 [email protected] [email protected] Ronald Reif David Fisichella Institution Safety Officer Diving Control Board MS#48 MS#17 [email protected] [email protected] Dr. Laurence P. Madin John D. Sisson Diving Control Board Diving Control Board MS#39 MS#18 [email protected] [email protected] Christopher Land Dr. Steve Elgar Diving Control Board Diving Control Board MS# 33 MS #11 [email protected] [email protected] Martin McCafferty EMT-P, DMT, EMD-A Diving Control Board DAN Medical Information Specialist [email protected] ii WHOI Diving Safety Manual WOODS HOLE OCEANOGRAPHIC INSTITUTION DIVING SAFETY MANUAL REVISION 3.2, September 5, 2017 INTRODUCTION Scuba diving was first used at the Institution in the summer of 1952. At first, formal instruction and proper information was unavailable, but in early 1953 training was obtained at the Naval Submarine Escape Training Tank in New London, Connecticut and also with the Navy Underwater Demolition Team in St.
    [Show full text]
  • Diving and Hyperbaric Medicine
    Diving and Hyperbaric Medicine 7KH-RXUQDORIWKH6RXWK3DFL¿F8QGHUZDWHU0HGLFLQH6RFLHW\ ,QFRUSRUDWHGLQ9LFWRULD $% ISSN 1833 - 3516 Volume 37 No. 4 ABN 29 299 823 713 December 2007 Diving expeditions: from Antarctica to the Tropics Diving deaths in New Zealand Epilepsy and diving – time for a change? Mechanical ventilation of patients at pressure Print Post Approved PP 331758/0015 9^k^c\VcY=neZgWVg^XBZY^X^cZKdajbZ(,Cd#)9ZXZbWZg'%%, PURPOSES OF THE SOCIETY IdegdbdiZVcY[VX^a^iViZi]ZhijYnd[VaaVheZXihd[jcYZglViZgVcY]neZgWVg^XbZY^X^cZ Idegdk^YZ^c[dgbVi^dcdcjcYZglViZgVcY]neZgWVg^XbZY^X^cZ IdejWa^h]V_djgcVa IdXdckZcZbZbWZghd[i]ZHdX^ZinVccjVaanViVhX^Zci^ÄXXdc[ZgZcXZ OFFICE HOLDERS EgZh^YZci 9g8]g^h6Xdii (%EVg`6kZcjZ!GdhhancEVg` :çbV^a1XVXdii5deijhcZi#Xdb#Vj3 Hdji]6jhigVa^V*%,' EVhiçEgZh^YZci 9gGdWncLVa`Zg &'7VggVaa^ZgHigZZi!<g^[Äi] :çbV^a1GdWnc#LVa`Zg5YZ[ZcXZ#\dk#Vj3 68I'+%( HZXgZiVgn 9gHVgV]H]Vg`Zn E#D#7DM&%*!CVggVWZZc :çbV^a1hejbhhZXgZiVgn5\bV^a#Xdb3 CZlHdji]LVaZh'&%& IgZVhjgZg 9g<jnL^aa^Vbh E#D#7dm&.%!GZY=^aaHdji] :çbV^a1hejbh5[VhibV^a#cZi3 K^Xidg^V(.(, :Y^idg 6hhdX#Egd[#B^`Z9Vk^h 8$d=neZgWVg^XBZY^X^cZJc^i :çbV^a1hejbh_5XY]W#\dki#co3 8]g^hiX]jgX]=dhe^iVa!Eg^kViZ7V\),&%!8]g^hiX]jgX]!CO :YjXVi^dcD[ÄXZg 9g;^dcVH]Vge ').XC^X]dahdcGdVY!H]ZcidcEVg` :çbV^a1h]Vge^Z[5YdXidgh#dg\#j`3 LZhiZgc6jhigVa^V+%%- EjWa^XD[ÄXZg 9gKVcZhhV=VaaZg E#D#7dm-%'(!8Vggjb9dlch :çbV^a1kVcZhhV#]VaaZg5XYbX#Xdb#Vj3 K^Xidg^V('%& 8]V^gbVc6CO=B< 9g9Vk^YHbVgi 9ZeVgibZcid[9^k^c\VcY=neZgWVg^XBZY^X^cZ :çbV^a1YVk^Y#hbVgi5Y]]h#iVh#\dk#Vj3 GdnVa=dWVgi=dhe^iVa!=dWVgi!IVhbVc^V,%%% LZWbVhiZg
    [Show full text]
  • Using Underwater Pulse Oximetry in Freediving to Extreme Depths to Study Risk of Hypoxic Blackout and Diving Response Phases
    ORIGINAL RESEARCH published: 01 April 2021 doi: 10.3389/fphys.2021.651128 Using Underwater Pulse Oximetry in Freediving to Extreme Depths to Study Risk of Hypoxic Blackout and Diving Response Phases Eric Mulder 1* and Erika Schagatay 1,2 1 Environmental Physiology Group, Department of Health Sciences, Mid Sweden University, Östersund, Sweden, 2 Swedish Winter Sports Research Centre, Mid Sweden University, Östersund, Sweden Deep freediving exposes humans to hypoxia and dramatic changes in pressure. The effect of depth on gas exchange may enhance risk of hypoxic blackout (BO) during the last part of the ascent. Our aim was to investigate arterial oxygen saturation (SpO2) and heart rate Edited by: (HR) in shallow and deep freedives, central variables, which have rarely been studied Costantino Balestra, underwater in deep freediving. Four male elite competitive freedivers volunteered to wear Haute École Bruxelles-Brabant (HE2B), Belgium a newly developed underwater pulse oximeter for continuous monitoring of SpO2 and HR Reviewed by: during self-initiated training in the sea. Two probes were placed on the temples, connected Neal William Pollock, to a recording unit on the back of the freediver. Divers performed one “shallow” and one Laval University, Canada Kay Tetzlaff, “deep” constant weight dive with fins. Plethysmograms were recorded at 30 Hz, and University Hospital of Tübingen, SpO2 and HR were extracted. Mean ± SD depth of shallow dives was 19 ± 3 m, and Germany 73 ± 12 m for deep dives. Duration was 82 ± 36 s in shallow and 150 ± 27 s in deep Claus-Martin Muth, Universitaetsklinikum Ulm, Germany dives. All divers desaturated more during deeper dives (nadir 55 ± 10%) compared to *Correspondence: shallow dives (nadir 80 ± 22%) with a lowest SpO2 of 44% in one deep dive.
    [Show full text]
  • Symptomatic Middle Ear and Cranial Sinus Barotraumas As a Complication of Hyperbaric Oxygen Treatment
    İst Tıp Fak Derg 2016; 79: 4 KLİNİK ARAŞTIRMA / CLINICAL RESEARCH J Ist Faculty Med 2016; 79: 4 http://dergipark.ulakbim.gov.tr/iuitfd http://www.journals.istanbul.edu.tr/iuitfd SYMPTOMATIC MIDDLE EAR AND CRANIAL SINUS BAROTRAUMAS AS A COMPLICATION OF HYPERBARIC OXYGEN TREATMENT HİPERBARİK OKSİJEN TEDAVİSİ KOMPLİKASYONU: SEMPTOMATİK ORTA KULAK VE KRANYAL SİNUS BAROTRAVMASI Bengüsu MİRASOĞLU*, Aslıcan ÇAKKALKURT*, Maide ÇİMŞİT* ABSTRACT Objective: Hyperbaric oxygen therapy (HBOT) is applied for various diseases. It is generally considered safe but has some benign complications and adverse effects. The most common complication is middle ear barotrauma. The aim of this study was to collect data about middle ear and cranial sinus barotraumas in our department and to evaluate factors affecting the occurrence of barotrauma. Material and methods: Files of patients who had undergone hyperbaric oxygen therapy between June 1st, 2004, and April 30th, 2012, and HBOT log books for the same period were searched for barotraumas. Patients who were intubated and unconscious were excluded. Data about demographics and medical history of conscious patients with barotrauma (BT) were collected and evaluated retrospectively. Results: It was found that over eight years and 23,645 sessions, 39 of a total 896 patients had BT; thus, the general BT incidence of our department was 4.4%. The barotrauma incidence was significantly less in the multiplace chamber (3.1% vs. 8.7%) where a health professional attended the therapies. Most barotraumas were seen during early sessions and were generally mild. A significant accumulation according to treatment indications was not determined. Conclusion: It was thought that the low barotrauma incidence was related to the slow compression rate as well as training patients thoroughly and monitoring them carefully.
    [Show full text]
  • Hyperbaric Oxygen Therapy (HBOT) Final Evidence Report
    20, 2012 Health Technology Assessment Hyperbaric Oxygen Therapy (HBOT) for Tissue Damage, Including Wound Care and Treatment of Central Nervous System (CNS) Conditions Final Evidence Report February 15, 2013 Health Technology Assessment Program (HTA) Washington State Health Care Authority PO Box 42712 Olympia, WA 98504-2712 (360) 725-5126 hta.hca.wa.gov [email protected] Hyperbaric Oxygen Therapy (HBOT) for Tissue Damage, Including Wound Care and Treatment of Central Nervous System (CNS) Conditions A Health Technology Assessment Prepared for Washington State Health Care Authority FINAL REPORT – February 15, 2013 Acknowledgement This report was prepared by: Hayes, Inc. 157 S. Broad Street Suite 200 Lansdale, PA 19446 P: 215.855.0615 F: 215.855.5218 This report is intended to provide research assistance and general information only. It is not intended to be used as the sole basis for determining coverage policy or defining treatment protocols or medical modalities, nor should it be construed as providing medical advice regarding treatment of an individual’s specific case. Any decision regarding claims eligibility or benefits, or acquisition or use of a health technology is solely within the discretion of your organization. Hayes, Inc. assumes no responsibility or liability for such decisions. Hayes employees and contractors do not have material, professional, familial, or financial affiliations that create actual or potential conflicts of interest related to the preparation of this report. Prepared by Winifred Hayes, Inc. Page i February
    [Show full text]
  • Inquest Findings
    CORONERS COURT OF QUEENSLAND FINDINGS OF INQUEST CITATION: Inquest into the death of Andrew John Thwaites TITLE OF COURT: Coroners Court JURISDICTION: Brisbane FILE NO(s): 2016/3336 DELIVERED ON: 24 July 2018 DELIVERED AT: Brisbane HEARING DATE(s): 28 June 2017, 25 September 2017. FINDINGS OF: Christine Clements, Brisbane Coroner CATCHWORDS: CORONERS: Dive death investigation, recreational diving, carbon monoxide toxicity, drowning, contamination of breathing air from within electric air compressor, ignition of lubricating oil within over heated compressor, maintenance, filtration, ASA breathing air standards, testing for contamination REPRESENTATION: Counsel Assisting: Ms Holly Ahern Ms Kelly-Anne Masterman and Mr Angus Edwards I/B Jacobson Ms Deborah Monks: Mahony Lawyers Underwater Research Group Mr Damien Atkinson I/B Moray & QLD Inc: Agnew Lawyers Ms Sarah Williamson: Ms Kristi Riedel I/B Gilchrist Connell Lawyers Mr Shane Murphy: Mr Andrew Lossberg, Crown Law, I/B Coronial Liaison Unit, Office of Industrial Relations Mr Ian Leishman: Mr Anthony Collins I/B Carter Newell Lawyers Contents Introduction ...................................................................................................... 1 Organisation of the dive trip ............................................................................. 2 Events on 10 August 2016 ............................................................................... 3 Recollection of Ms Masterman ......................................................................... 4 The events
    [Show full text]