Diving and hyperbaric medicine最新文献_第6页

Full-face snorkel masks increase the incidence of hypoxaemia and hypercapnia during simulated snorkelling compared to conventional snorkels. 与传统呼吸管相比，全脸呼吸管面罩会增加模拟呼吸过程中低氧血症和高碳酸血症的发生率。

IF 0.9 4区医学

Diving and hyperbaric medicine Pub Date : 2023-12-20 DOI: 10.28920/dhm53.4.313-320

Janneke Grundemann, Xavier Ce Vrijdag, Nicole Ye Wong, Nicholas Gant, Simon J Mitchell, Hanna van Waart

{"title":"Full-face snorkel masks increase the incidence of hypoxaemia and hypercapnia during simulated snorkelling compared to conventional snorkels.","authors":"Janneke Grundemann, Xavier Ce Vrijdag, Nicole Ye Wong, Nicholas Gant, Simon J Mitchell, Hanna van Waart","doi":"10.28920/dhm53.4.313-320","DOIUrl":"10.28920/dhm53.4.313-320","url":null,"abstract":"Introduction: Air flow in full-face snorkel masks (FFSMs) should be unidirectional to prevent rebreathing of exhaled air. This study evaluated rebreathing and its consequences when using FFSMs compared to a conventional snorkel.Methods: In a dry environment 20 participants wore three types of snorkel equipment in random order: Subea Easybreath FFSM; QingSong 180-degree panoramic FFSM; and a Beuchat Spy conventional snorkel (with nose clip), in three conditions: rest in a chair; light; and moderate intensity exercise on a cycle ergometer. Peripheral oxygen saturation, partial pressure of carbon dioxide (PCO2) and oxygen (PO2) in the end tidal gas and FFSM eye-pockets, respiratory rate, minute ventilation, were measured continuously. Experiments were discontinued if oxygen saturation dropped below 85%, or if end-tidal CO2 exceeded 7.0 kPa.Results: Experimental runs with the FFSMs had to be discontinued more often after exceeding 7.0 kPa end-tidal CO2 compared to a conventional snorkel e.g., 18/40 (45%) versus 4/20 (20%) during light intensity exercise, and 9/22 (41%) versus 3/16 (19%) during moderate intensity exercise. Thirteen participants exhibited peripheral oxygen saturations below 95% (nine using FFSMs and four using the conventional snorkel) and five fell below 90% (four using FFSMs and one using the conventional snorkel). The PCO2 and PO2 in the eye-pockets of the FFSMs fluctuated and were significantly higher and lower respectively than in inspired gas, which indicated rebreathing in all FFSM wearers.Conclusions: Use of FFSMs may result in rebreathing due to non-unidirectional flow, leading to hypercapnia and hypoxaemia.","PeriodicalId":11296,"journal":{"name":"Diving and hyperbaric medicine","volume":"53 4","pages":"313-320"},"PeriodicalIF":0.9,"publicationDate":"2023-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10735670/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138801096","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

University of Auckland Postgraduate Diploma in Diving and Hyperbaric Medicine. 奥克兰大学潜水和高压氧医学研究生文凭。

IF 0.8 4区医学

Diving and hyperbaric medicine Pub Date : 2023-12-20 DOI: 10.28920/dhm53.4.360

Michael Davis

引用次数: 0

Hypoxic loss of consciousness in air diving: two cases of mixtures made hypoxic by oxidation of the scuba diving cylinder. 空气潜水中的缺氧性意识丧失：两个因潜水气瓶氧化而导致混合物缺氧的案例。

IF 0.8 4区医学

Diving and hyperbaric medicine Pub Date : 2023-12-20 DOI: 10.28920/dhm53.4.356-359

Arnaud Druelle, Lucille Daubresse, Jean U Mullot, Hélène Streit, Pierre Louge

引用次数: 0

Cerebral arterial gas embolism (CAGE) during open water scuba certification training whilst practising a controlled emergency swimming ascent. 在开放水域水肺认证培训中，在练习受控紧急游泳上升时发生脑动脉气体栓塞 (CAGE)。

IF 0.8 4区医学

Diving and hyperbaric medicine Pub Date : 2023-12-20 DOI: 10.28920/dhm53.4.345-350

Neil Banham, Elisabete da Silva, John Lippmann

引用次数: 0

A European code of good practice for hyperbaric oxygen therapy - Review 2022. 欧洲高压氧治疗良好操作规范--2022 年回顾。

IF 0.9 4区医学

Diving and hyperbaric medicine Pub Date : 2023-12-20 DOI: 10.28920/dhm53.4.suppl.1-17

Jacek Kot, Jordi Desola, Folke Lind, Peter Mueller, Erik Jansen, Francois Burman, - Working Group

引用次数: 0

Rapture of the deep: gas narcosis may impair decision-making in scuba divers. 深海狂喜：气体麻醉可能会影响水肺潜水员的决策。

IF 0.8 4区医学

Diving and hyperbaric medicine Pub Date : 2023-12-20 DOI: 10.28920/dhm53.4.306-312

Pauliina A Ahti, Jan Wikgren

{"title":"Rapture of the deep: gas narcosis may impair decision-making in scuba divers.","authors":"Pauliina A Ahti, Jan Wikgren","doi":"10.28920/dhm53.4.306-312","DOIUrl":"10.28920/dhm53.4.306-312","url":null,"abstract":"Introduction: While gas narcosis is familiar to most divers conducting deep (> 30 metres) dives, its effects are often considered minuscule or subtle at 30 metres. However, previous studies have shown that narcosis may affect divers at depths usually considered safe from its influence, but little knowledge exists on the effects of gas narcosis on higher cognitive functions such as decision-making in relatively shallow water at 30 metres. Impaired decision-making could be a significant safety issue for a multitasking diver.Methods: We conducted a study exploring the effects of gas narcosis on decision-making in divers breathing compressed air underwater. The divers (n = 22) were evenly divided into 5-metre and 30-metre groups. In the water, we used underwater tablets equipped with the Iowa Gambling Task (IGT), a well-known psychological task used to evaluate impairment in decision-making.Results: The divers at 30 metres achieved a lower score (mean 1,584.5, standard deviation 436.7) in the IGT than the divers at 5 metres (mean 2,062.5, standard deviation 584.1). Age, body mass index, gender, or the number of previous dives did not affect performance in the IGT.Conclusions: Our results suggest that gas narcosis may affect decision-making in scuba divers at 30 metres depth. This supports previous studies showing that gas narcosis is present at relatively shallow depths and shows that it may affect higher cognitive functions.","PeriodicalId":11296,"journal":{"name":"Diving and hyperbaric medicine","volume":"53 4","pages":"306-312"},"PeriodicalIF":0.8,"publicationDate":"2023-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10944662/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138801017","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Within-diver variability in venous gas emboli (VGE) following repeated dives. 多次潜水后静脉气体栓塞（VGE）在潜水员内部的变化。

IF 0.8 4区医学

Diving and hyperbaric medicine Pub Date : 2023-12-20 DOI: 10.28920/dhm53.4.333-339

David J Doolette, F Gregory Murphy

{"title":"Within-diver variability in venous gas emboli (VGE) following repeated dives.","authors":"David J Doolette, F Gregory Murphy","doi":"10.28920/dhm53.4.333-339","DOIUrl":"10.28920/dhm53.4.333-339","url":null,"abstract":"Introduction: Venous gas emboli (VGE) are widely used as a surrogate endpoint instead of decompression sickness (DCS) in studies of decompression procedures. Peak post-dive VGE grades vary widely following repeated identical dives but little is known about how much of the variability in VGE grades is proportioned between-diver and within-diver.Methods: A retrospective analysis of 834 man-dives on six dive profiles with post-dive VGE measurements was conducted under controlled laboratory conditions. Among these data, 151 divers did repeated dives on the same profile on two to nine occasions separated by at least one week (total of 693 man-dives). Data were analysed for between- and within-diver variability in peak post-dive VGE grades using mixed-effect models with diver as the random variable and associated intraclass correlation coefficients.Results: Most divers produced a wide range of VGE grades after repeated dives on the same profile. The intraclass correlation coefficient (repeatability) was 0.33 indicating that 33% of the variability in VGE grades is between-diver variability; correspondingly, 67% of variability in VGE grades is within-diver variability. DCS cases were associated with an individual diver's highest VGE grades and not with their lower VGE grades.Conclusions: These data demonstrate large within-diver variability in VGE grades following repeated dives on the same dive profile and suggest there is substantial within-diver variability in susceptibility to DCS. Post-dive VGE grades are not useful for evaluating decompression practice for individual divers.","PeriodicalId":11296,"journal":{"name":"Diving and hyperbaric medicine","volume":"53 4","pages":"333-339"},"PeriodicalIF":0.8,"publicationDate":"2023-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10944664/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138801026","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Diving with psychotropic medication: review of the literature and clinical considerations. 精神药物潜水：文献综述和临床注意事项。

IF 0.8 4区医学

Diving and hyperbaric medicine Pub Date : 2023-09-30 DOI: 10.28920/dhm53.3.259-267

Abraham L Querido, Chiel F Ebbelaar, Thijs T Wingelaar

引用次数: 0

Investigation into the effect of hyperbaric hyperoxia on serum cardiac Troponin T levels as a biomarker of cardiac injury. 高压氧对作为心脏损伤生物标志物的血清心肌肌钙蛋白T水平影响的研究。

IF 0.8 4区医学

Diving and hyperbaric medicine Pub Date : 2023-09-30 DOI: 10.28920/dhm53.3.281-284

Jack Marjot, John Mackenzie, Nigel Jepson, Ewan Reeves, Michael Bennett

{"title":"Investigation into the effect of hyperbaric hyperoxia on serum cardiac Troponin T levels as a biomarker of cardiac injury.","authors":"Jack Marjot, John Mackenzie, Nigel Jepson, Ewan Reeves, Michael Bennett","doi":"10.28920/dhm53.3.281-284","DOIUrl":"10.28920/dhm53.3.281-284","url":null,"abstract":"Introduction: There is clinical equipoise as to whether hyperoxia is injurious to the myocardium, both in the setting of acute ischaemic insults and on the stable myocardium. This study examined the effect of extreme hyperoxia - in the form of hyperbaric oxygen treatment - on the myocardium through measurement of high-sensitivity cardiac troponin.Methods: Forty-eight individuals were enrolled to undergo a series of 30 exposures to hyperbaric oxygen for treatment of non-cardiac pathologies. High-sensitivity troponin T was measured before and after each session.Results: There was no clinically significant difference in troponin measurements following acute or recurrent sequential exposures to extreme hyperoxia, despite the studied patient population having a high rate of previous ischaemic heart disease or cardiovascular risk factors.Conclusions: This study demonstrates that profound hyperoxaemia does not induce any measurable cardiac injury at a biochemical level. Neither is there a reduction in cardiac troponin to suggest a cardioprotective effect of hyperbaric hyperoxia. This provides some reassurance as to the cardiac safety of the routine use of hyperbaric oxygen treatment in management of non-cardiac pathology.","PeriodicalId":11296,"journal":{"name":"Diving and hyperbaric medicine","volume":"53 3","pages":"281-284"},"PeriodicalIF":0.8,"publicationDate":"2023-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10735667/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10299458","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

An evaluation of the NUI Compact Chest Compression Device (NCCD), a mechanical CPR device suitable for use in the saturation diving environment. NUI紧凑型胸部按压装置（NCCD）的评估，这是一种适用于饱和潜水环境的机械CPR装置。

IF 0.9 4区医学

Diving and hyperbaric medicine Pub Date : 2023-09-30 DOI: 10.28920/dhm53.3.181-188

Andrew Tabner, Philip Bryson, Nicholas Tilbury, Benjamin McGregor, Alistair Wesson, Gareth D Hughes, Gareth R Hughes, Graham Johnson

{"title":"An evaluation of the NUI Compact Chest Compression Device (NCCD), a mechanical CPR device suitable for use in the saturation diving environment.","authors":"Andrew Tabner, Philip Bryson, Nicholas Tilbury, Benjamin McGregor, Alistair Wesson, Gareth D Hughes, Gareth R Hughes, Graham Johnson","doi":"10.28920/dhm53.3.181-188","DOIUrl":"10.28920/dhm53.3.181-188","url":null,"abstract":"Introduction: Provision of manual chest compressions in a diving bell using a conventional technique is often impossible, and alternative techniques are poorly evidenced in terms of efficacy and sustainability. The first mechanical cardiopulmonary resuscitation (CPR) device suitable for use in this environment, the NUI Compact Chest Compression Device (NCCD), has recently been designed and manufactured. This study assessed both the efficacy of the device in delivering chest compressions to both prone and seated manikins, and the ability of novice users to apply and operate it.Methods: Compression efficacy was assessed using a Resusi Anne QCPR intelligent manikin, and the primary outcome was the proportion of compressions delivered to target depth (50-60 mm). The gold standard was that achieved by expert CPR providers delivering manual CPR; the LUCAS 3 mCPR device was a further comparator.Results: The NCCD delivered 100% of compressions to target depth compared to 98% for the gold standard (interquartile range 1.5%) and 98% for the LUCAS 3 when applied to both supine and seated manikins. The NCCD sometimes became dislodged and had to be reapplied when used with a seated manikin.Conclusions: The NCCD can deliver chest compressions at target rate and depth to both supine and seated manikins with efficacy equivalent to manual CPR and the LUCAS 3. It can become dislodged when applied to a seated manikin; its design has now been altered to prevent this. New users can be trained in use of the NCCD quickly, but practise is required to ensure effective use.","PeriodicalId":11296,"journal":{"name":"Diving and hyperbaric medicine","volume":"53 3","pages":"181-188"},"PeriodicalIF":0.9,"publicationDate":"2023-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10597600/pdf/DHM-53-181.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10306275","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0