Carbon dioxide absorbents for rebreather diving.

Abstract:

:Firstly I would like to thank SPUMS members for making me a Life Member of SPUMS; I was surprised and greatly honoured by the award. I also want to confirm and expand on the findings on carbon dioxide absorbents reported by David Harvey et al. For about 35 years, I was the main player in deciding which absorbent went into Australian Navy and Army diving sets. On several occasions, suppliers of absorbents to the anaesthesia market tried to supply the Australian military market. On no occasion did they provide absorbent that came close to the minimum absorbent capacity required, generally being 30-40% less efficient than diving-grade absorbents. Because I regard lives as being more important than any likely dollar saving, the best absorbent was always selected unless two suppliers provided samples with the same absorbent capacity. On almost every occasion, there was a clear winner and cost was never considered. I suggest the same argument for the best absorbent should be used by members and their friends who dive using rebreather sets. I make this point because of my findings on a set that was brought to me after the death of its owner. The absorbent was not the type or grain size recommended by the manufacturer of the set and did not resemble any of the diving grade absorbents I knew of. I suspected by its appearance that it was anaesthetic grade absorbent. When I tested the set, the absorbent system failed very quickly so it is likely that carbon dioxide toxicity contributed to his death. The death was not the subject of an inquest and I have no knowledge of how the man obtained the absorbent. Possibly there was someone from an operating theatre staff who unintentionally caused their friend's death by supplying him with 'borrowed absorbent'. I make this point as I would like to discourage members from making a similar error.

journal_name

Diving Hyperb Med

authors

Pennefather J

subject

Has Abstract

pub_date

2016-09-01 00:00:00

pages

180

issue

3

eissn

1833-3516

issn

2209-1491

journal_volume

46

pub_type

评论,信件
  • Sphenoid sinus mucocele as an unusual differential diagnosis in diving injuries.

    abstract::Sphenoid sinus mucocele is a rare cystic lesion. It grows gradually and causes visual disturbances, ocular motility abnormalities and headache due to cavernous sinus compression. Sudden change in sinus cavity volume by a barotrauma may compress a mucocele and precipitate symptoms that may easily be confused with decom...

    journal_title:Diving and hyperbaric medicine

    pub_type: 杂志文章

    doi:10.28920/dhm50.2.168-172

    authors: Mirasoglu B,Kirmizi S,Aktas S

    更新日期:2020-06-30 00:00:00

  • Hyperbaric intensive care technology and equipment.

    abstract::In an emergency, life support can be provided during recompression or hyperbaric oxygen therapy using very basic equipment, provided the equipment is hyperbaric-compatible and the clinicians have appropriate experience. For hyperbaric critical care to be provided safely on a routine basis, however, a great deal of pre...

    journal_title:Diving and hyperbaric medicine

    pub_type: 杂志文章,评审

    doi:

    authors: Millar IL

    更新日期:2015-03-01 00:00:00

  • Livedoid vasculopathy successfully treated with hyperbaric oxygen.

    abstract::Livedoid vasculopathy is a painful, ulcerating condition of the lower legs, ankles and feet with the typical histological feature of hyalinising vascular change of dermal blood vessels with minimal inflammation. Therapeutic interventions have been diverse and varyingly successful. We report a biopsy-proven case in a 2...

    journal_title:Diving and hyperbaric medicine

    pub_type: 杂志文章

    doi:

    authors: Banham ND

    更新日期:2013-03-01 00:00:00

  • Comparison of the size of persistent foramen ovale and atrial septal defects in divers with shunt-related decompression illness and in the general population.

    abstract:INTRODUCTION:Decompression illness (DCI) is associated with a right-to-left shunt, such as persistent foramen ovale (PFO), atrial septal defect (ASD) and pulmonary arteriovenous malformations. About one-quarter of the population have a PFO, but considerably less than one-quarter of divers suffer DCI. Our aim was to det...

    journal_title:Diving and hyperbaric medicine

    pub_type: 杂志文章

    doi:

    authors: Wilmshurst PT,Morrison WL,Walsh KP

    更新日期:2015-06-01 00:00:00

  • South Pacific Underwater Medicine Society guidelines for cardiovascular risk assessment of divers.

    abstract::The South Pacific Underwater Medicine Society (SPUMS) diving medical for recreational scuba divers was last reviewed in 2011. From 2011 to 2019, considerable advancements have occurred in cardiovascular risk assessment relevant to divers. The SPUMS 48th (2019) Annual Scientific Meeting theme was cardiovascular risk as...

    journal_title:Diving and hyperbaric medicine

    pub_type: 指南

    doi:10.28920/dhm50.3.273-277

    authors: Jepson N,Rienks R,Smart D,Bennett MH,Mitchell SJ,Turner M

    更新日期:2020-09-30 00:00:00

  • The Hyperbaric Protective Tube: A housing for a left ventricular assist device (LVAD) in a multiplace hyperbaric chamber.

    abstract:INTRODUCTION:During a hyperbaric oxygen therapy (HBOT) session, every medical device that is used within the hyperbaric chamber is exposed to several hazards, including an increased ambient pressure and partial pressure of oxygen. In Europe, all medical devices marketed and/or sold for use in hyperbaric conditions must...

    journal_title:Diving and hyperbaric medicine

    pub_type: 杂志文章

    doi:10.28920/dhm49.2.137-140

    authors: Kot J,Siondalski P,Lenkiewicz E

    更新日期:2019-06-30 00:00:00

  • Influence of repetitive diving in saltwater on pressure equalization and Eustachian tube function in recreational scuba divers.

    abstract:INTRODUCTION:We investigated in a prospective, observational trial the feasibility of using the Eustachian tube function test (ETFT) to measure the effect of repetitive pressure exposure during open seawater dives on Eustachian tube function. METHODS:The study included 28 adult divers during six consecutive days of di...

    journal_title:Diving and hyperbaric medicine

    pub_type: 杂志文章

    doi:10.28920/dhm47.4.216-222

    authors: Meyer MF,Boor M,Jansen S,Pracht ED,Felsch M,Klünter HD,Hüttenbrink KB,Beutner D,Grosheva M

    更新日期:2017-12-01 00:00:00

  • Time course of the reduction in nitric oxide concentration in exhaled gas after exposure to hyperbaric hyperoxia.

    abstract::Exposure to hyperoxia is associated with oxidative stress and is known to cause inflammation in the lung and the airways. Exhaled nitric oxide concentration (FENO) is a marker of some inflammatory processes in the lung and airways, and is reduced immediately after a single session of hyperbaric oxygen (HBO) exposure. ...

    journal_title:Diving and hyperbaric medicine

    pub_type: 杂志文章

    doi:

    authors: Kjelkenes I,Thorsen E

    更新日期:2009-06-01 00:00:00

  • A pleural vacuum relief device for pleural drain unit use in the hyperbaric environment.

    abstract:INTRODUCTION:When a standard water-seal pleural drain unit (PDU) is used under hyperbaric conditions there are scenarios where excessive negative intrapleural pressure (IPP) and/or fluid reflux can be induced, risking significant morbidity. We developed and tested a pleural vacuum relief (PVR) device which automaticall...

    journal_title:Diving and hyperbaric medicine

    pub_type: 杂志文章

    doi:10.28920/dhm47.3.191-197

    authors: Gelsomino M,Tsouras T,Millar I,Fock A

    更新日期:2017-09-01 00:00:00

  • Rescue of drowning victims and divers: is mechanical ventilation possible underwater? A pilot study.

    abstract:INTRODUCTION:In-water resuscitation has recently been proposed in the European resuscitation guidelines. Initiation of mechanical ventilation underwater might be considered when an immediate ascent to the surface is impossible or dangerous. The present study evaluated the feasibility of such ventilation underwater. ME...

    journal_title:Diving and hyperbaric medicine

    pub_type: 杂志文章

    doi:

    authors: Winkler BE,Muth CM,Kaehler W,Froeba G,Georgieff M,Koch A

    更新日期:2013-06-01 00:00:00

  • Swedish recommendations on recreational diving and diabetes mellitus.

    abstract::Divers from many countries travel to explore various diving sites worldwide. In 2005, the Divers Alert Network (DAN) wrote guidelines for recreational diving and diabetes mellitus, but there is no up-to-date consensus or adoption of international guidelines on diabetes and diving. There are also large differences betw...

    journal_title:Diving and hyperbaric medicine

    pub_type: 杂志文章

    doi:

    authors: Jendle J,Adolfsson P,Ornhagen H

    更新日期:2012-12-01 00:00:00

  • Does self-certification reflect the cardiac health of UK sport divers?

    abstract:BACKGROUND:Since 2009, the United Kingdom diving incident data show an increasing number of fatalities in the over-50s age group. Previous studies also suggest some divers take cardiac medications. Since 2001, diving medicals have not been mandatory for UK sport divers. Instead, an annual medical self-certification for...

    journal_title:Diving and hyperbaric medicine

    pub_type: 杂志文章

    doi:

    authors: St Leger Dowse M,Waterman MK,Penny CE,Smerdon GR

    更新日期:2015-09-01 00:00:00

  • Heat shock increases survival in rats exposed to hyperbaric pressure.

    abstract::It has been shown that a single bout of exercise performed 20 hours prior to hyperbaric exposure reduces bubble formation and increases survival in rats. Heat shock proteins (HSPs) are stress proteins expressed in cells that are exposed to different stressors. HSPs are known to protect cells, by binding to proteins an...

    journal_title:Diving and hyperbaric medicine

    pub_type: 杂志文章

    doi:

    authors: Medby C,Bye A,Wisløff U,Brubakk AO

    更新日期:2008-12-01 00:00:00

  • The effect of intravenous perfluorocarbon emulsions on whole-body oxygenation after severe decompression sickness.

    abstract:INTRODUCTION:Decompression sickness (DCS) results from a decrease in ambient pressure leading to supersaturation of tissues with inert gas and bubble formation. Perfluorocarbons (PFCs) are able to dissolve vast amounts of non-polar gases. Intravenous (IV) PFC emulsions reduce both morbidity and mortality associated wit...

    journal_title:Diving and hyperbaric medicine

    pub_type: 杂志文章

    doi:

    authors: Smith CR,Parsons JT,Zhu J,Spiess BD

    更新日期:2012-03-01 00:00:00

  • Preventive effect of rosiglitazone on liver injury in a mouse model of decompression sickness.

    abstract:BACKGROUND AND AIMS:Severe decompression sickness (DCS) is a multi-organ injury. This study investigated the preventive effects of rosiglitazone on liver injury following rapid decompression in mice and examined the underlying mechanisms. METHODS:Mice were randomly divided into four groups: a control group, vehicle gr...

    journal_title:Diving and hyperbaric medicine

    pub_type: 杂志文章

    doi:10.28920/dhm47.1.17-23

    authors: Peng B,Chen MM,Jiang ZL,Li X,Wang GH,Xu LH

    更新日期:2017-03-01 00:00:00

  • Inner-ear decompression sickness: 'hubble-bubble' without brain trouble?

    abstract::Inner-ear decompression sickness (DCS) is an incompletely understood and increasingly recognized condition in compressed-air divers. Previous reports show a high association of inner-ear DCS with persistent foramen ovale (PFO), suggesting that a moderate-to-severe right-to-left shunt might represent a major predisposi...

    journal_title:Diving and hyperbaric medicine

    pub_type: 信件

    doi:

    authors: Tremolizzo L,Malpieri M,Ferrarese C,Appollonio I

    更新日期:2015-06-01 00:00:00

  • In-water recompression.

    abstract::Divers suspected of suffering decompression illness (DCI) in locations remote from a recompression chamber are sometimes treated with in-water recompression (IWR). There are no data that establish the benefits of IWR compared to conventional first aid with surface oxygen and transport to the nearest chamber. However, ...

    journal_title:Diving and hyperbaric medicine

    pub_type: 杂志文章,评审

    doi:10.28920/dhm48.2.84-95

    authors: Doolette DJ,Mitchell SJ

    更新日期:2018-06-30 00:00:00

  • Maintenance of negative-pressure wound therapy while undergoing hyperbaric oxygen therapy.

    abstract:BACKGROUND:Both negative wound pressure therapy (NPWT) and hyperbaric oxygen therapy (HBOT) are useful modalities in the treatment of problem wounds. However, none of the commercially available portable negative-pressure devices have been certified safe for use in a recompression chamber. Thus, the NPWT device is remov...

    journal_title:Diving and hyperbaric medicine

    pub_type: 杂志文章,随机对照试验

    doi:

    authors: Chong SJ,Kwan TM,Weihao L,Joang KS,Rick SC

    更新日期:2011-09-01 00:00:00

  • The measurement of Eustachian tube function in a hyperbaric chamber using an ear canal microphone.

    abstract:OBJECTIVE:The purpose of this study was to further the understanding of the opening of the Eustachian tube in relation to changes in barometric pressure. DESIGN:An ear canal microphone was used to measure the specific sounds related to tube opening and possible eardrum movements. Five subjects with normal tube functio...

    journal_title:Diving and hyperbaric medicine

    pub_type: 杂志文章

    doi:

    authors: Fischer HG,Koch A,Kähler W,Pohl M,Pau HW,Zehlicke T

    更新日期:2016-03-01 00:00:00

  • Vomiting and aspiration of gastric contents: a possible life-threatening combination in underwater diving.

    abstract::Vomiting and aspiration of gastric contents into the airways and lungs is a common and well-known clinicopathological entity. This phenomenon might also occur in underwater diving, where it can lead to life-threatening or fatal situations. This article presents two incidents involving diving-related vomiting with asso...

    journal_title:Diving and hyperbaric medicine

    pub_type: 杂志文章

    doi:10.28920/dhm48.1.36-39

    authors: Novomeský F,Janík M,Hájek M,Krajčovič J,Straka L

    更新日期:2018-03-31 00:00:00

  • Oxygen toxicity in recreational and technical diving.

    abstract::It is increasingly common for recreational scuba divers to use breathing mixtures enriched with additional oxygen ('nitrox' or 'enriched air nitrogen') and for technical divers to be exposed to elevated partial pressures of oxygen for prolonged periods of time. The National Oceanic and Atmospheric Administration oxyge...

    journal_title:Diving and hyperbaric medicine

    pub_type: 杂志文章

    doi:

    authors: Fock A,Millar I

    更新日期:2008-06-01 00:00:00

  • The death of buddy diving?

    abstract::Dear Editor, By focussing on the details of the Watson case, I believe Bryan Walpole has missed the thrust of my earlier letter. I agree this was a complex case, which is why I deliberately avoided the murky specifics in order to consider the 'big-picture' ramifications of the judgement. My concerns relate to the pote...

    journal_title:Diving and hyperbaric medicine

    pub_type: 信件

    doi:

    authors: Cooper PD

    更新日期:2011-12-01 00:00:00

  • Referral patterns and outcomes of dive medical examinations in a tertiary hyperbaric facility.

    abstract:INTRODUCTION:Scuba diving involves risks, and candidates in Australia usually have a medical evaluation prior to undertaking a diving course. Hyperbaric physicians act as secondary referral practitioners for these assessments. This study aimed to identify reasons for these secondary referrals, and document the assessme...

    journal_title:Diving and hyperbaric medicine

    pub_type: 杂志文章

    doi:

    authors: Min Ong L,Bennett MH,Thomas PS

    更新日期:2010-09-01 00:00:00

  • The use of drugs by UK recreational divers: prescribed and over-the-counter medications.

    abstract:INTRODUCTION:Various prescribed and over-the-counter medications may theoretically be incompatible with the diving environment. Anecdotally, it is known divers regularly take medications around the time of their diving activities for different health conditions, possibly ignoring the recommendations not to do so. As pa...

    journal_title:Diving and hyperbaric medicine

    pub_type: 杂志文章

    doi:

    authors: Dowse MS,Cridge C,Smerdon G

    更新日期:2011-03-01 00:00:00

  • Sample size requirement for comparison of decompression outcomes using ultrasonically detected venous gas emboli (VGE): power calculations using Monte Carlo resampling from real data.

    abstract:INTRODUCTION:In studies of decompression procedures, ultrasonically detected venous gas emboli (VGE) are commonly used as a surrogate outcome if decompression sickness (DCS) is unlikely to be observed. There is substantial variability in observed VGE grades, and studies should be designed with sufficient power to detec...

    journal_title:Diving and hyperbaric medicine

    pub_type: 杂志文章

    doi:

    authors: Doolette DJ,Gault KA,Gutvik CR

    更新日期:2014-03-01 00:00:00

  • Cerebral arterial gas embolism after pre-flight ingestion of hydrogen peroxide.

    abstract::Cerebral arterial gas embolism (CAGE) is a feared complication of ambient depressurisation and can also be a complication of hydrogen peroxide ingestion. We present an unusual case of CAGE in a 57-year-old woman exposed to both of these risk factors. We describe her subsequent successful treatment with hyperbaric oxyg...

    journal_title:Diving and hyperbaric medicine

    pub_type: 杂志文章

    doi:

    authors: Smedley BL,Gault A,Gawthrope IC

    更新日期:2016-06-01 00:00:00

  • Pulmonary barotrauma: a case report with illustrative radiology.

    abstract::A case of a 24-year-old gentleman who had pulmonary barotrauma (PBT) after diving is reported. He presented with chest pain after the second of two uneventful shallow SCUBA dives. Computerized tomography (CT) scan confirmed the diagnosis and he was treated conservatively. Relevant radiology and a discussion of PBT are...

    journal_title:Diving and hyperbaric medicine

    pub_type:

    doi:10.28920/dhm50.1.66-69

    authors: Bigeni S,Saliba M

    更新日期:2020-03-31 00:00:00

  • Cerebral venous air embolism treated with hyperbaric oxygen: a case report.

    abstract::We present a case of cerebral venous gas embolism. Our patient made a complete neurological recovery after hyperbaric oxygen therapy (HBOT). The principles of HBOT, compressing and eliminating air bubbles and decreasing Β-2 integrin function, thus improving microcirculation, can only be beneficial in a situation where...

    journal_title:Diving and hyperbaric medicine

    pub_type: 杂志文章

    doi:

    authors: Bothma PA,Brodbeck AE,Smith BA

    更新日期:2012-06-01 00:00:00

  • Increasing prevalence of vestibulo-cochlear decompression illness in Malta - an analysis of hyperbaric treatment data from 1987-2017.

    abstract:INTRODUCTION:Scuba diving is a big part of the tourism sector in Malta, and all the cases of decompression illness (DCI)are treated within the single hyperbaric referral centre in the country. METHODS:This retrospective analysis reviews all the medical records of divers with DCI in Malta within the 30-year period betw...

    journal_title:Diving and hyperbaric medicine

    pub_type: 杂志文章

    doi:10.28920/dhm49.3.161-166

    authors: Azzopardi CP,Caruana J,Matity L,Muscat S,Meintjes WAJ

    更新日期:2019-09-30 00:00:00

  • A review of 17 years of telephone calls to the Australian Diver Emergency Service (DES).

    abstract:INTRODUCTION:The Diver Emergency Service (DES) in Australia provides specialised medical advice on diving incidents 24 hours a day to divers, dive operators, families and health professionals. It is operated from the Hyperbaric Medicine Unit of the Royal Adelaide Hospital where the physician-on-call also carries the DE...

    journal_title:Diving and hyperbaric medicine

    pub_type: 杂志文章

    doi:

    authors: Wilkinson D,Goble S

    更新日期:2012-09-01 00:00:00