Undersea and Hyperbaric Medicine最新文献_第10页

Crossings: Dr. Peter Bennett and Dr. Claes Lundgren 交叉:彼得·班尼特医生和克拉斯·朗格伦医生

IF 0.9 4区医学

Undersea and Hyperbaric Medicine Pub Date : 2022-07-01 DOI: 10.22462/07.08.2022.13

引用次数: 0

Crossings: preface. 口岸:前言。

IF 0.9 4区医学

Undersea and Hyperbaric Medicine Pub Date : 2022-04-01

引用次数: 0

Hyperoxic exposure monitoring in diving: A farewell to the UPTD. 潜水高氧暴露监测:告别UPTD。

IF 0.9 4区医学

Undersea and Hyperbaric Medicine Pub Date : 2022-04-01

Jan Risberg, Pieter-Jan van Ooij

{"title":"Hyperoxic exposure monitoring in diving: A farewell to the UPTD.","authors":"Jan Risberg, Pieter-Jan van Ooij","doi":"","DOIUrl":"","url":null,"abstract":"Depending on pO2 and exposure time hyperoxic breathing gas may cause injury in many organs including the lungs. Pulmonary oxygen toxicity (POT) may be asymptomatic, but will initially present as a tracheobronchitis in symptomatic subjects. A number of objective measurements of POT have been investigated, but the decrement in vital capacity (VC) has remained the most accepted outcome measure. The unit pulmonary toxic dose (UPTD) has been established as the most common exposure index for POT in diving. UPTD is calculated based on the pO2 and exposure time. A literature search identified five models predicting POT, but no model would accurately predict VC change for the full range of pO2 variation and exposure time relevant for surface-oriented diving. Nevertheless, compared to UPTD, the K-index (K = t2*pO24.57, where t = time (hours) and pO2 = inspired pO2 (atm)) suggested by Arieli performed better for pO2 > 150 kPa and allowed estimation of recovery. We recommend that the Arieli K-index should replace UPTD as the POT exposure index for all surface-oriented diving. Based on the limited data available we suggest a daily threshold of K = 120 for a maximum of two diving days followed by two days of recovery. For five consecutive days of diving, we recommend that the threshold should not exceed K=70 and two recovery days should be allowed. For multiday diving without days of recovery, the daily exposure should probably be limited to K = 40-50.","PeriodicalId":49396,"journal":{"name":"Undersea and Hyperbaric Medicine","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2022-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40711388","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Thermoregulation during a six-hour exposure to warm, humid hyperbaric conditions. 在温暖潮湿的高压环境下进行6小时的体温调节。

IF 0.9 4区医学

Undersea and Hyperbaric Medicine Pub Date : 2022-04-01

Daniel K Sweet, Courtney E Wheelock, Jacqueline Schwob, Jocelyn Stooks, Brian M Clemency, Erika St James, Riana R Pryor, Zachary J Schlader, David Hostler

{"title":"Thermoregulation during a six-hour exposure to warm, humid hyperbaric conditions.","authors":"Daniel K Sweet, Courtney E Wheelock, Jacqueline Schwob, Jocelyn Stooks, Brian M Clemency, Erika St James, Riana R Pryor, Zachary J Schlader, David Hostler","doi":"","DOIUrl":"","url":null,"abstract":"Purpose: In a disabled submarine scenario, a pressurized rescue module (PRM) may be deployed to rescue survivors. If the PRM were to become disabled, conditions could become hot and humid exposing the occupants to heat stress. We tested the hypothesis that the rise in core temperature and fluid loss from sweating would increase with rising dry bulb temperature.Methods: Twelve males (age 22 ± 3 years; height 179 ± 7 cm; mass 77.4 ± 8.3 kg) completed this study. On three occasions, subjects were exposed to high humidity and either 28-, 32-, or 35˚C for six hours in a dry hyperbaric chamber pressurized to 6.1 msw. Changes in core temperature (Tc) and body mass were recorded and linear regression lines fit to estimate the predicted rise in Tc and loss of fluid from sweating.Results: Heart rate was higher in the 35°C condition compared to the 28°C and 32°C conditions. Tc was higher in the 32°C condition compared to 28°C and higher in 35°C compared to the 28˚°C and 32°C conditions. Projected fluid loss in all of the tested conditions could exceed 6% of body mass after 24 hours of exposure endangering the health of sailors in a DISSUB or disabled PRM. A fluid intake of 1.0 to 3.5 L would be required to limit dehydration to 2% or 4% of initial mass depending upon condition.Conclusions: Prolonged exposure to 35°C conditions under pressure results in uncompensable heat stress. 32°C and 35°C exposures were compensable under these conditions but further research is required to elucidate the effect of increased ambient pressure on thermoregulation.","PeriodicalId":49396,"journal":{"name":"Undersea and Hyperbaric Medicine","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2022-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40711391","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Physical symptoms provoked by normobaric hot and humid disabled pressurized rescue module scenarios. 由常压高温和潮湿的失能加压救援舱情景引起的身体症状。

IF 0.9 4区医学

Undersea and Hyperbaric Medicine Pub Date : 2022-04-01

Zachary J Schlader, Blair D Johnson, Riana R Pryor, Jocelyn Stooks, Brett Siders, Brian M Clemency, David Hostler

{"title":"Physical symptoms provoked by normobaric hot and humid disabled pressurized rescue module scenarios.","authors":"Zachary J Schlader, Blair D Johnson, Riana R Pryor, Jocelyn Stooks, Brett Siders, Brian M Clemency, David Hostler","doi":"","DOIUrl":"","url":null,"abstract":"We tested the hypothesis that thermal discomfort will be greater, mood will be worse, and physical symptoms of heat illness will be exacerbated with elevations in dry bulb temperature during exposure to >95% relative humidity disabled pressurized rescue module simulation. On three occasions, 15 healthy males (23 ± 3 years) sat in 32.1 ± 0.1°C, 33.1 ± 0.2°C or 35.0 ± 0.1°C, and 95 ± 2% relative humidity normobaric environments for eight hours. Thermal discomfort (visual analog scale), mood (profile of mood states), and physical symptoms of heat illness, ear-nose-throat, and muscle discomfort (environmental symptoms questionnaire) were assessed before and following each hour of exposure. Thermal discomfort was greater throughout the exposure in 35°C versus both 32°C and 33°C (p ≥ 0.03) and did not differ between the latter conditions (p ≥ 0.07). Mood worsened over time in all trials (p ≺ 0.01) and was worse in 35°C compared to 32°C and 33°C after five hours of exposure (p ≤ 0.05). Heat illness symptoms increased over time in all trials and was greater in 35°C versus 32°C and 33°C throughout the exposure (p ≤ 0.04). Ear-nose-throat and muscle discomfort symptoms increased over time in all trials (p < 0.01) and were higher in 35°C versus 32°C and 33°C after the sixth hour of exposure (p ≤ 0.02). In support of our hypothesis, mood was worse, physical symptoms of heat illness, and ear-nose-throat and muscle discomfort symptoms were exacerbated, and thermal discomfort was greater with elevations in dry bulb temperature during an eight-hour exposure to a >95% relative humidity disabled PRM simulation.","PeriodicalId":49396,"journal":{"name":"Undersea and Hyperbaric Medicine","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2022-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40711392","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Hyperbaric oxygen therapy research: an analysis of the 100 most-cited publications from 2011 to 2020. 高压氧治疗研究:2011 - 2020年100篇被引次数最多的论文分析。

IF 0.9 4区医学

Undersea and Hyperbaric Medicine Pub Date : 2022-04-01

Hsin-Tzu Yeh, Ching-Hsing Lee

{"title":"Hyperbaric oxygen therapy research: an analysis of the 100 most-cited publications from 2011 to 2020.","authors":"Hsin-Tzu Yeh, Ching-Hsing Lee","doi":"","DOIUrl":"","url":null,"abstract":"Objective: Hyperbaric oxygen (HBO2) is used in several clinical and research fields. This study aimed to analyze the 100 most-cited hyperbaric-related publications of the past 10 years to understand the trends in HBO2 research.Methods: This was a literature review. All publication and citation data were retrieved from the Scopus database. Publications with \"hyperbaric oxygen,\" \"hyperbaric oxygenation,\" \"HBO,\" and \"HBOT\" in the title, abstract, or keywords published between January 01, 2011, and December 31, 2020, were enrolled. The 100 most-cited HBO2-focused publications were identified, and their publication title, authors' nationality, publication journal, year, type (original or review), and application field were recorded and analyzed using descriptive statistics. Linear regression was used to evaluate the trends in publication numbers.Results: A total of 6,517 publications were enrolled. The annual rate of increase was 4.56 per year (p-value = 0.13, 95% CI: -1.62 to 10.74). The total, average, median and mode of citations were 67,726, 10.4, 4, and 0, respectively. The 100 most-cited HBO2-focused publications accounted for 1.5% (100/6,517) of all publications and 8.1% (5509/67,726) of the total number of times cited. The most-cited publications originated from 17 countries and were published in 65 journals, led by the Cochrane Database of Systematic Reviews.Conclusions: The annual number of HBO2 publications was stationary. The citation numbers showed a skewed distribution. The United States was the leading country in HBO2 research. Of 26 application fields, traumatic brain injury, stroke, and diabetic foot were the leading three fields.","PeriodicalId":49396,"journal":{"name":"Undersea and Hyperbaric Medicine","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2022-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40722978","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Efficacy and safety of a standardized hyperbaric oxygen therapy protocol for retinal artery occlusion. 标准高压氧治疗视网膜动脉闭塞的有效性和安全性。

IF 0.9 4区医学

Undersea and Hyperbaric Medicine Pub Date : 2022-04-01

Helene Di Vincenzo, Andreas Kauert, David Martiano, Jeremy Chiabo, Dominique Di Vincenzo, Igor Sozonoff, Stéphanie Baillif, Arnaud Martel

{"title":"Efficacy and safety of a standardized hyperbaric oxygen therapy protocol for retinal artery occlusion.","authors":"Helene Di Vincenzo, Andreas Kauert, David Martiano, Jeremy Chiabo, Dominique Di Vincenzo, Igor Sozonoff, Stéphanie Baillif, Arnaud Martel","doi":"","DOIUrl":"","url":null,"abstract":"Introduction: We aimed to assess the efficacy and safety of a standardized hyperbaric oxygen (HBO2) therapy protocol in patients with retinal artery occlusion (RAO).Methods: A retrospective study was conducted in our tertiary care center from July 2016 to September 2019. Patients experiencing central RAO and branch RAO for less than seven days were included. Once the diagnosis was made, patients were urgently referred to the HBO2 department to receive a first 90-minute HBO2 session at a pressure of 2.5 ATA. Patients underwent two daily sessions seven days a week for at least 15 days. If no reperfusion was seen on fluorescein angiography on Day 15, treatment was continued for an additional week with an assessment on Day 21. The primary endpoint was BCVA improvement defined as a decrease by 0.3 logMAR at one month.Results: Twenty-eight patients were included during the study period. Fifty-seven percent of patients were treated more than 12 hours after the onset of the first symptoms. The mean BCVA was 1.5 logMAR at the time of referral and improved to 0.9 logMAR after HBO2 (p=0.001). A multivariate analysis identified a high blood pressure (p=0.039) and a low initial BCVA (p=0.005) as poor prognostic factors.Conclusion: Performing HBO2 sessions twice daily at a pressure of 2.5 ATA appears to be an effective and safe treatment for RAO.","PeriodicalId":49396,"journal":{"name":"Undersea and Hyperbaric Medicine","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2022-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40722975","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Prescription medication use and trends for U.S. Navy submariners from 2007 to 2018. 2007年至2018年美国海军潜艇的处方药使用和趋势。

IF 0.9 4区医学

Undersea and Hyperbaric Medicine Pub Date : 2022-04-01

Linda M Hughes, Brian J Maguire, Michael Gilbert, Robert Nordness

{"title":"Prescription medication use and trends for U.S. Navy submariners from 2007 to 2018.","authors":"Linda M Hughes, Brian J Maguire, Michael Gilbert, Robert Nordness","doi":"","DOIUrl":"","url":null,"abstract":"Introduction: This is the first study to examine population medication prescription rates among U.S. submariners by common therapeutic classifications.Methods: Individual-level pharmacy records during the years 2007 to 2018 were extracted from the Military Health System's Pharmacy Data Transaction Service (PDTS) file. Demographic and military factors captured from Navy personnel files were linked to PDTS records. Logistic regression models were used to identify characteristics and trends associated with prevalence. Published total rates for other active-duty components were compared to submariner rates.Results: There were data for 50,720 submariners, among whom 576,782 prescriptions were filled. Prevalence rates decreased significantly from 2007-2018 among most drug classes. Central nervous system agents accounted for 31% of the total prescriptions, followed by 12% for eye, ear, nose, and throat preparations, and 10% for anti-infective agents. Higher prescription rates were associated with being enlisted, younger, a woman, lower-ranked, or Hispanic. The mean yearly prescription rate was 2.7 per submariner, less than half of the overall rate of all military components.Conclusion: The survival benefit of HBO2 therapy observed in our unadjusted analysis suggests that there may be therapeutic benefits of HBO2 in treating COVID-19 hypoxia as an adjunct to standard care.","PeriodicalId":49396,"journal":{"name":"Undersea and Hyperbaric Medicine","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2022-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40711390","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The effect of atmospheric pressure on the bond strength of composites. 大气压对复合材料粘结强度的影响。

IF 0.9 4区医学

Undersea and Hyperbaric Medicine Pub Date : 2022-04-01

Azam Valian, Mahdi Allahdadi

{"title":"The effect of atmospheric pressure on the bond strength of composites.","authors":"Azam Valian, Mahdi Allahdadi","doi":"","DOIUrl":"","url":null,"abstract":"Background: In the current study, we investigated the effect of atmospheric pressure change on the microtensile bond strength of direct and indirect composite restorations to the teeth.Materials and methods: A total of 16 extracted teeth were prepared after crown cutting and randomly divided into four groups. The study groups included: 1) direct restoration (Filtek™ Z250 Universal Composite Restorative System, 3M, United States) at constant pressure (control); 2) direct restoration in variable pressure; 3) indirect restoration (Z250 composite) at constant pressure (control); and 4) indirect restoration at variable pressure. Then, samples were subjected to thermal cycles. Variable pressure groups were pressurized to 0 to 5 atmospheres for 96 cycles inside the hyperbaric chamber, followed by measuring the microtensile bond strength of the specimens.Results: The mean of microtensile bond strength in both direct and indirect variable-pressure groups was significantly lower than their counterpart control groups. There was no significant difference between direct and indirect restorations in constant and variable pressure. The failure mode of the samples in the control groups was often mixed, while in the pressure groups, it was dominated by adhesive. Also, microscopic examination of restoration interfaces showed that the number and volume of voids in variable pressure groups were much more than the control groups.Conclusion: Regardless of the type of restoration, changing the atmospheric pressure is effective on the bond strength of the restorations to the teeth.","PeriodicalId":49396,"journal":{"name":"Undersea and Hyperbaric Medicine","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2022-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40711389","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Efficiency of a 24-hour on-call system for early recompression therapy for acute decompression sickness. 24小时随叫随到系统对急性减压病早期再压迫治疗的效率。

IF 0.9 4区医学

Undersea and Hyperbaric Medicine Pub Date : 2022-04-01

You Jin Lee, Sang Ku Jung, Joyng Hyun Lee, Hui Dong Kang, Se Hyun Oh, Suk Dong Ban

{"title":"Efficiency of a 24-hour on-call system for early recompression therapy for acute decompression sickness.","authors":"You Jin Lee, Sang Ku Jung, Joyng Hyun Lee, Hui Dong Kang, Se Hyun Oh, Suk Dong Ban","doi":"","DOIUrl":"","url":null,"abstract":"Background: Early recompression therapy is suggested for a better clinical outcome of decompression sickness (DCS) patients. This study analyzed the efficacy of our 24-hour on-call system for early recompression therapy.Methods: We conducted a single-center retrospective cohort study. They were classified into DCS Type I versus Type II, duty time versus non-duty time groups based on the time of emergency department (ED) admission, and hospitalization versus discharge groups according to clinical outcomes. Baseline characteristics, diving variables, and in-hospital course were analyzed.Results: This study investigated 341 acute DCS patients. A total of 81 and 260 patients had Type I and Type II DCS, respectively. While 198 patients accessed the center during duty time, 143 presented during non-duty time. Fifty patients were admitted, and 291 patients were discharged. Total median time from symptom onset to HBO2 therapy was 259 minutes: 240 minutes for the duty group and 292 minutes for the non-duty group (p=0.16); 251 minutes for the discharged group and 291 minutes for the hospitalized group (p<0.001). The median time from ED admission to HBO2 therapy was 65 minutes: 60 minutes for the duty group and 69 minutes for the non-duty group (p=0.23); 63.4 minutes for the discharged group and 92 minutes for the hospitalized group (p=0.05).Conclusion: The 24-hour on-call system was able to provide acute DCS patients with early recompression therapy even during non-duty time. However, in terms of the outcome of treatment of patients, quicker arrival at the hospital and swifter recompression therapy are needed.","PeriodicalId":49396,"journal":{"name":"Undersea and Hyperbaric Medicine","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2022-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40722976","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0