Abstract：
INTRODUCTION:The adverse effects of hyperbaric oxygen (HBO) on cardiac physiology are considered a potential hazard during the treatment of some patients. The haemodynamic effects of HBO are poorly understood and the incompatibility of electrical equipment inside the chamber has made assessment difficult. At Fremantle Hyperbaric Unit, we have modified an ultrasound machine (Logiq™ e) for safe use within the hyperbaric environment. The aim of this study was to evaluate the cardiac changes that occur during HBO using in-chamber transthoracic echocardiography (TTE) in subjects without evidence of active cardiac disease. METHODS:Eleven patients and nine members of staff underwent comprehensive TTE examinations before and during HBO administered at a pressure of 243 kPa. The TTE examinations were reported by two independent cardiologists and statistically evaluated using paired Student's t-tests. RESULTS:There was a significant decrease in heart rate during HBO (65 vs. 70 bpm on air at atmospheric pressure, P = 0.002) resulting in a decrease in cardiac output (5.3 vs. 5.9 L·min⁻¹, P = 0.003). Left ventricular outflow tract (LVOT) dimension was larger during HBO than baseline imaging (2.30 vs. 2.23 cm, P = 0.0003). LVOT velocity time integrals (VTI) decreased (19.9 vs. 21.5 cm, P = 0.009) and therefore a similar stroke volume was maintained (61 vs. 65 ml, P = 0.5). Ventricular and atrial volumes, intracardiac flows and minor valvular abnormalities were not significantly affected by HBO. No adverse cardiac effects were observed. CONCLUSIONS:TTE can be safely performed within a hyperbaric chamber. Cardiac physiology is not adversely affected by HBO in individuals without active cardiac disease.
journal_name
Diving Hyperb Medjournal_title
Diving and hyperbaric medicineauthors
Gawthrope IC,Playford DA,King B,Brown K,Wilson C,McKeown Bsubject
Has Abstractpub_date
2014-09-01 00:00:00pages
141-5issue
3eissn
1833-3516issn
2209-1491journal_volume
44pub_type
杂志文章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：
更新日期：2012-09-01 00:00:00
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：
更新日期：2015-06-01 00:00:00
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 ...
journal_title：Diving and hyperbaric medicine
pub_type： 评论,信件
doi：
更新日期：2016-09-01 00:00:00
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
更新日期：2017-03-01 00:00:00
abstract：INTRODUCTION:Transcutaneous oximetry measurement (TCOM) is a non-invasive method of determining oxygen tension at the skin level using heated electrodes. AIM:To compare TCOM values generated by different machines and to establish lower limb TCOM values in a cohort of healthy individuals younger than 40 years of age. ...
journal_title：Diving and hyperbaric medicine
pub_type： 杂志文章
doi：10.28920/dhm47.2.82-87
更新日期：2017-06-01 00:00:00
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：
更新日期：2008-06-01 00:00:00
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：
更新日期：2016-06-01 00:00:00
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
更新日期：2017-09-01 00:00:00
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：
更新日期：2008-12-01 00:00:00
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：
更新日期：2016-03-01 00:00:00
abstract：:Gas micronuclei are gas-filled voids in liquids from which bubbles can form at low gas supersaturation. If water is depleted of gas micronuclei, high gas supersaturation is required for bubble formation. This high gas supersaturation is required in part to overcome the Laplace pressure at the point of transition from ...
journal_title：Diving and hyperbaric medicine
pub_type： 信件
doi：10.28920/dhm49.1.64
更新日期：2019-03-31 00:00:00
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：
更新日期：2010-09-01 00:00:00
abstract：BACKGROUND:Colorectal cancer is the third most common form of cancer and colorectal surgery is the treatment of choice in local disease. Anastomotic leakage following colorectal surgery is a major complication with a high incidence and mortality. Adjuvant hyperbaric oxygen treatment (HBOT) may be associated with reduct...
journal_title：Diving and hyperbaric medicine
pub_type： 杂志文章,meta分析
doi：10.28920/dhm48.3.173-185
更新日期：2018-09-30 00:00:00
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
更新日期：2018-03-31 00:00:00
abstract：:Decompression illness (DCI) is a syndrome with diverse clinical manifestations but in which cardiac symptoms are rare. In the presence of cardiac symptoms, the necessity to rule out an acute coronary syndrome (ACS) which requires prompt treatment may result in delay to appropriate recompression treatment. We describe ...
journal_title：Diving and hyperbaric medicine
pub_type： 杂志文章
doi：
更新日期：2013-12-01 00:00:00
abstract：INTRODUCTION:This study identified pre-existing medical conditions among scuba diving fatalities in Australia from 2001 to 2013, inclusive, and assessed whether these conditions likely contributed to the deaths. METHODS:The National Coronial Information System (NCIS) was searched for scuba diving-related cases during ...
journal_title：Diving and hyperbaric medicine
pub_type： 杂志文章
doi：10.28920/dhm50.2.98-104
更新日期：2020-06-30 00:00:00
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：
更新日期：2013-06-01 00:00:00
abstract：INTRODUCTION:An individual case review of diving-related deaths reported as occurring in Australia in 2006 was conducted as part of the Divers Alert Network Asia-Pacific (DAN AP) dive fatality reporting project. METHOD:The case studies were compiled using reports from witnesses, the police and coroners. In each case, ...
journal_title：Diving and hyperbaric medicine
pub_type： 杂志文章
doi：
更新日期：2011-06-01 00:00:00
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：
更新日期：2011-03-01 00:00:00
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：
更新日期：2013-03-01 00:00:00
abstract：INTRODUCTION:Running out of air, buoyancy problems and rapid ascents are known risk factors for diving morbidity and mortality. The effects of the diving environment and equipment and the influence of individual diver characteristics on these risks were studied. METHODS:Between 1995 and 2004, Project Dive Exploration ...
journal_title：Diving and hyperbaric medicine
pub_type： 杂志文章
doi：
更新日期：2009-12-01 00:00:00
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：
更新日期：2011-09-01 00:00:00
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
更新日期：2020-06-30 00:00:00
abstract：:Divers are exposed to circulatory stress that directly affects the endothelial lining of blood vessels, and even asymptomatic dives are associated with inflammatory responses, microparticle release and endothelial dysfunction. As humans age, there is a relative increase in the risk of cardiovascular disease, attribute...
journal_title：Diving and hyperbaric medicine
pub_type： 杂志文章,评审
doi：
更新日期：2015-12-01 00:00:00
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：
更新日期：2015-06-01 00:00:00
abstract：:Basic life support (BLS) in a diving bell (DB) or deck decompression chamber (DDC) is difficult due to the confined space and limited equipment. Retrieval of the unconscious diver into the DB requires the use of a pulley system. Once inside the bell, space limitations dictate that any resuscitative efforts are attempt...
journal_title：Diving and hyperbaric medicine
pub_type： 杂志文章
doi：
更新日期：2008-06-01 00:00:00
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：
更新日期：2011-12-01 00:00:00
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：
更新日期：2012-06-01 00:00:00
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：
更新日期：2012-12-01 00:00:00
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
更新日期：2020-09-30 00:00:00
