3,857 results match your criteria Decompression Sickness


Microparticle-induced vascular injury in mice following decompression is inhibited by hyperbaric oxygen: Effects on microparticles and interleukin-1β.

J Appl Physiol (1985) 2019 Feb 14. Epub 2019 Feb 14.

Emergency Medicine, University of Maryland School of Medicine, United States.

Hyperbaric oxygen (HBO) became a mainstay for treating decompression sickness (DCS) because bubbles are associated with the disorder. Inflammatory processes including production of circulating microparticles (MPs) have now been shown to occur with DCS, leading to questions regarding pathophysiology and the role for HBO. We investigated effects of HBO on mice exposed to 790 kPa air pressure for 2 hours, which triggers elevations of MPs ladened with interleukin (IL)-1β that cause diffuse vascular injuries. Read More

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http://dx.doi.org/10.1152/japplphysiol.01109.2018DOI Listing
February 2019

Diving patterns and decompression sickness among South Korean fishery divers.

J Occup Health 2019 Jan;61(1):143-153

Department of Occupational and Environmental Medicine, Yeungnam University Hospital, Daegu, Republic of Korea.

Objectives: We aimed to report the characteristics of diving practice and the incidence of decompression sickness (DCS) among South Korean fishery divers.

Methods: We sent out questionnaires to 215 registered boat owners, and 196 of the fishery divers responded. The questionnaire was comprised of demographical characteristics, diving-related characteristics, and experiences with DCS. Read More

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https://onlinelibrary.wiley.com/doi/abs/10.1002/1348-9585.12
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http://dx.doi.org/10.1002/1348-9585.12035DOI Listing
January 2019
4 Reads

Effect of helium preconditioning on neurological decompression sickness in rats.

J Appl Physiol (1985) 2019 Jan 17. Epub 2019 Jan 17.

Department of Diving Medicine, Faculty of Naval Medicine, Second Military Medical University, China.

Decompression sickness (DCS) occurs due to a sudden or excessively rapid reduction in ambient pressure. Bubble-induced spinal cord ischemia is generally considered as a part of neurological DCS pathogenesis. Because helium preconditioning (HPC) recently demonstrated beneficial property against ischemic damage, we hypothesized HPC may decrease the neurological deficits of DCS in rats. Read More

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https://www.physiology.org/doi/10.1152/japplphysiol.00275.20
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http://dx.doi.org/10.1152/japplphysiol.00275.2018DOI Listing
January 2019
5 Reads

Abdominal CT Scan Findings of Decompression Sickness: A Case Report.

J Radiol Case Rep 2018 Oct 31;12(10):17-23. Epub 2018 Oct 31.

Department of Radiology, Hahnemann University Hospital, Philadelphia, PA, USA.

This case report depicts the radiologic findings of a 51-year-old male presenting with Decompression Sickness. Decompression Sickness is diagnosed clinically, therefore radiologic imaging of this disease entity is limited. Our patient's history includes a scuba dive to depth of 110 feet with a descending time of 24 minutes and an ascending time of 8 minutes. Read More

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http://dx.doi.org/10.3941/jrcr.v12i10.3425DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6312119PMC
October 2018
1 Read

Reduction in the Level of Plasma Mitochondrial DNA in Human Diving, Followed by an Increase in the Event of an Accident.

Front Physiol 2018 29;9:1695. Epub 2018 Nov 29.

Institut de Recherche Biomédicale des Armées, Equipe Résidante de Recherche Subaquatique Opérationnelle, Département Environnement Opérationnel, Unité Environnements Extrêmes, Toulon, France.

Circulating mitochondrial DNA (mtDNA) is receiving increasing attention as a danger-associated molecular pattern in conditions such as autoimmunity or trauma. In the context of decompression sickness (DCS), the course of which is sometimes erratic, we hypothesize that mtDNA plays a not insignificant role particularly in neurological type accidents. This study is based on the comparison of circulating mtDNA levels in humans presenting with various types of diving accidents, and punctured upon their admission at the hyperbaric facility. Read More

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http://dx.doi.org/10.3389/fphys.2018.01695DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6282000PMC
November 2018
1 Read

The on-site differential diagnosis of decompression sickness from endogenous cerebral ischaemia in an elderly Ama diver using ultrasound.

Diving Hyperb Med 2018 Dec;48(4):262-263

Department of Acute Critical Care Medicine, Juntendo Shizuoka Hospital, Izunokuni City, Shizuoka Prefecture, Japan.

Commercial or occupational breath-hold (BH) harvest divers along the coast and islands of Japan are collectively called Ama divers. Repetitive BH diving by Ama divers may place them at risk of developing neurological decompression sickness (DCS). We report a 74-year-old Ama diver who demonstrated right hemiparesis during an ascent after free diving at a depth of 5 metres' sea water. Read More

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http://dx.doi.org/10.28920/dhm48.4.262-263DOI Listing
December 2018
3 Reads

A diver with immersion pulmonary oedema and prolonged respiratory symptoms.

Diving Hyperb Med 2018 Dec;48(4):259-261

Department of Pulmonary Medicine, Kameda Medical Centre, Kamogawa, Chiba, Japan.

Immersion pulmonary oedema (IPE) is particularly associated with an excessive reaction to exercise and/or cold stress. IPE usually resolves without recompression therapy within a day or two. Herein we report a diver diagnosed with IPE, in whom symptoms persisted for five days. Read More

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http://dx.doi.org/10.28920/dhm48.4.259-261DOI Listing
December 2018
12 Reads

Validation of algorithms used in commercial off-the-shelf dive computers.

Authors:
Doug Fraedrich

Diving Hyperb Med 2018 Dec;48(4):252-258

Washington DC, USA.

Introduction: Whilst the US Navy has been very systematic about validating Navy dive computer algorithms, there has been little documented or published evidence of rigorous testing of the algorithms in commercial off-the-shelf dive computers. This paper reports the evaluation of four algorithms used in these - Bühlmann ZHL-16C; VPM-B; Suunto-RGBM; EMC-20H - by comparison with US Navy experimental dives with known decompression sickness outcomes.

Methods: Three specific tests were developed to test the algorithms' ability to mitigate decompression sickness: Total decompression time; no stop times and first stop depth. Read More

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http://dx.doi.org/10.28920/dhm48.4.252-258DOI Listing
December 2018
4 Reads

Vibration and bubbles: a systematic review of the effects of helicopter retrieval on injured divers.

Diving Hyperb Med 2018 Dec;48(4):235-240

Department of Kinesiology, Faculty of Medicine, Université Laval, Québec, Canada.

Introduction: Vibration from a helicopter during aeromedical retrieval of divers may increase venous gas emboli (VGE) production, evolution or distribution, potentially worsening the patient's condition.

Aim: To review the literature surrounding the helicopter transport of injured divers and establish if vibration contributes to increased VGE.

Method: A systematic literature search of key databases was conducted to identify articles investigating vibration and bubbles during helicopter retrieval of divers. Read More

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http://dx.doi.org/10.28920/dhm48.4.241-251DOI Listing
December 2018
9 Reads

Decompression illness and other injuries in a recreational dive charter operation.

Diving Hyperb Med 2018 Dec;48(4):218-223

Department of Anaesthesiology, Faculty of Medicine and Health Sciences, University of Auckland.

Introduction: Health and safety within the recreational diving industry are poorly described. We aimed to obtain the true prevalence of decompression illness (DCI) and other diving and non-diving injuries, including occupational injuries, in a large recreational diving charter operation.

Methods: A New Zealand recreational diving operator keeps detailed records of diving activity and event/incident reports. Read More

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http://dx.doi.org/10.28920/dhm48.4.218-223DOI Listing
December 2018
2 Reads

Comparison of tissue oxygenation achieved breathing oxygen from a demand valve with four different mask configurations.

Diving Hyperb Med 2018 Dec;48(4):209-217

Department of Kinesiology, Faculty of Medicine, Université Laval, Québec, Canada.

Introduction: High concentration normobaric oxygen (O₂) is a priority in treating divers with suspected decompression illness. The effect of different O₂ mask configurations on tissue oxygenation when breathing with a demand valve was evaluated.

Methods: Sixteen divers had tissue oxygen partial pressure (PtcO₂) measured at six limb sites. Read More

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http://dx.doi.org/10.28920/dhm48.4.209-217DOI Listing
December 2018
3 Reads

Triage and Treatment of Mass Casualty Decompression Sickness After Depressurization at 6400 m.

Aerosp Med Hum Perform 2018 12;89(12):1085-1088

Decompression sickness is a condition that results from an abrupt change from a higher to a lower pressure. It is described most commonly in divers; however, it can occur in aviation incidents, which this case report will discuss. Following an acute cabin depressurization incident, 36 patients presented to a small outpatient clinic with multiple symptoms, including fatigue, headache, nausea, vomiting, and dizziness. Read More

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http://dx.doi.org/10.3357/AMHP.5142.2018DOI Listing
December 2018
2 Reads

Comments on unresponsive decompression illness case.

J Intensive Care 2018 22;6:77. Epub 2018 Nov 22.

Underwater and Hyperbaric Medicine Department, Istanbul Faculty of Medicine, Istanbul, Turkey.

We have read the case report about a decompression sickness that was unresponsive to hyperbaric oxygen treatment in your journal. Presented case is intriguing; however, we think there are some contradictive issues in the discussion of the case. In this letter, we aim to comment on these issues that may raise further question. Read More

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http://dx.doi.org/10.1186/s40560-018-0347-zDOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6251120PMC
November 2018
1 Read

Semiparametric transformation models for interval-censored data in the presence of a cure fraction.

Biom J 2019 Jan 25;61(1):203-215. Epub 2018 Nov 25.

Institute of Public Health, School of Medicine, National Yang-Ming University, Taipei, Taiwan.

Mixed case interval-censored data arise when the event of interest is known only to occur within an interval induced by a sequence of random examination times. Such data are commonly encountered in disease research with longitudinal follow-up. Furthermore, the medical treatment has progressed over the last decade with an increasing proportion of patients being cured for many types of diseases. Read More

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http://doi.wiley.com/10.1002/bimj.201700304
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http://dx.doi.org/10.1002/bimj.201700304DOI Listing
January 2019
10 Reads

Bubble Formation in Children and Adolescents after Two Standardised Shallow Dives.

Int J Sports Med 2019 Jan 20;40(1):31-37. Epub 2018 Nov 20.

German Sport University, Institute of Physiology and Anatomy, Cologne, Germany.

Circulating venous bubbles after dives are associated with symptoms of decompression sickness in adults. Up to now it is not known to what extent children and adolescents are subjected to a bubble formation during their shallow dives and if there are possible indications for that. The aim of this pilot study is to investigate whether bubbles and/or symptoms occur after standardised repeated dives performed by young divers. Read More

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http://dx.doi.org/10.1055/a-0777-2279DOI Listing
January 2019
10 Reads

Investigation of Brain Impairment Using Diffusion-Weighted and Diffusion Tensor Magnetic Resonance Imaging in Experienced Healthy Divers.

Med Sci Monit 2018 Nov 17;24:8279-8289. Epub 2018 Nov 17.

Department of Radiology, Faculty of Medicine, Namik Kemal University, Tekirdag, Turkey.

BACKGROUND The aim of this study was to understand the changes of decompression illness in healthy divers by comparing diffusion-weighted (DWI) and diffusion tensor MRI findings among healthy professional divers and healthy non-divers with no history of diving. MATERIAL AND METHODS A total of 26 people were recruited in this prospective study: 11 experienced divers with no history of neurological decompression disease (cohort) and 15 healthy non-divers (control). In all study subjects, we evaluated apparent diffusion coefficient (ADC) and type of diffusion tensor metric fractional anisotropy (FA) values of different brain locations (e. Read More

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http://dx.doi.org/10.12659/MSM.911475DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6252049PMC
November 2018
2 Reads

Work-disability in low back pain patients with or without surgery, and the role of social insurance regulation changes in Sweden.

Eur J Public Health 2018 Nov 14. Epub 2018 Nov 14.

Division of Insurance Medicine, Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden.

Background: The aims were to study the differences in work-disability in patients with low back pain (LBP) in relation to (i) treatment provided (non-surgical or lumber spine surgery (decompression or fusion), and (ii) two time points, i.e. before and after the social insurance regulation changes in the in 2008. Read More

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https://academic.oup.com/eurpub/advance-article/doi/10.1093/
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http://dx.doi.org/10.1093/eurpub/cky243DOI Listing
November 2018
19 Reads

Cardiac Arrest Due to Air Embolism: Complicating Image-guided Lung Biopsy.

Cureus 2018 Sep 13;10(9):e3295. Epub 2018 Sep 13.

Department of Internal Medicine, East Tennessee State University, Quillen College of Medicine, Johnson City, USA.

Cardiac arrest due to air embolism is an infrequent complication. Air embolism can be associated with procedures like endoscopic retrograde cholangiopancreatography, endoscopic variceal ligation, operative hysteroscopy, laparoscopic surgery, pacemaker placement, cardiac ablation, fiberoptic bronchoscopy, and decompression sickness. In rare cases, air embolus can be a catastrophic complication of computed tomography (CT) guided lung biopsy, which can lead to cardiac arrest. Read More

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https://www.cureus.com/articles/14305-cardiac-arrest-due-to-
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http://dx.doi.org/10.7759/cureus.3295DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6235639PMC
September 2018
9 Reads

[Diving and asthma: Literature review].

Authors:
A Muller M Rochoy

Rev Pneumol Clin 2018 Dec 12;74(6):416-426. Epub 2018 Nov 12.

Université de Lille, 59000 Lille, France. Electronic address:

Introduction: Scuba diving has long been contraindicated for asthmatics. Recommendations are evolving towards authorisation under certain conditions. Our objective was to review the literature on the risks associated with scuba diving among asthmatics and about recommendations on this subject. Read More

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http://dx.doi.org/10.1016/j.pneumo.2018.10.002DOI Listing
December 2018
3 Reads

Aviation medicine considerations in parachuting operations.

J R Army Med Corps 2018 Nov 14. Epub 2018 Nov 14.

RAF Centre of Aviation Medicine, Royal Air Force, Henlow, UK.

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http://dx.doi.org/10.1136/jramc-2018-001090DOI Listing
November 2018
1 Read

The cost of decompression illness: the case of lobster and sea cucumber fishery in Yucatan, Mexico.

Undersea Hyperb Med 2018 Sep-Oct;45:531-539

International Hospital, Cozumel, Quintana Roo, Calle 5 Sur 21B, Centro, 77600 San Miguel de Cozumel, Quintana Roo, Mexico.

Diving fisheries are an important source of income and protein for many coastal communities around the world. However, these fisheries are also the cause of both fatal and non-fatal injuries. The aim of this study is to estimate the costs of decompression sickness (DCS) in the diving small-scale fisheries that target benthic resources in the Yucatan, Mexico. Read More

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November 2018
13 Reads

Updates in diving medicine: evidence published in 2017-2018.

Authors:
Brian M Keuski

Undersea Hyperb Med 2018 Sep-Oct;45:511-520

Duke Center for Hyperbaric Medicine and Environmental Physiology, Duke University Medical Center, Durham, North Carolina U.S.

This report summarizes some of the most relevant studies during the 2017-2018 academic year of scientific literature for diving medicine. The article selection is the result of a PubMed search for "diving," as well as a manual review of the journals Undersea and Hyperbaric Medicine and Diving and Hyperbaric Medicine. Four articles were published reporting on new advances in decompression modeling. Read More

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November 2018
8 Reads

Mystery Case: White matter lesion related to decompression sickness following extreme breath-hold diving.

Neurology 2018 Oct;91(18):847-848

From the Neuroimaging Department (C.G., S.R.) and the Infectious Diseases Department (T.M.), North Lisbon Hospital Center; and Underwater and Hyperbaric Medicine Center (A.T.), Portuguese Navy, Portugal.

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http://www.neurology.org/lookup/doi/10.1212/WNL.000000000000
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http://dx.doi.org/10.1212/WNL.0000000000006441DOI Listing
October 2018
2 Reads

A Systematic Review and Meta-Analysis of Decompression Sickness in Altitude Physiological Training.

Aerosp Med Hum Perform 2018 Nov;89(11):941-951

A review of decompression sickness (DCS) cases associated with the NASA altitude physiological training (APT) program at the Johnson Space Center (JSC) motivated us to place our findings into the larger context of DCS prevalence from other APT centers. We reviewed JSC records from 1999 to 2016 and 14 publications from 1968 to 2004 about DCS prevalence in other APT programs. We performed a meta-analysis of 15 APT profiles (488 cases / 385,116 exposures). Read More

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http://www.ingentaconnect.com/content/10.3357/AMHP.5135.2018
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http://dx.doi.org/10.3357/AMHP.5135.2018DOI Listing
November 2018
12 Reads

Deciphering function of the pulmonary arterial sphincters in loggerhead sea turtles ().

J Exp Biol 2018 Dec 4;221(Pt 23). Epub 2018 Dec 4.

Fundación Oceanografic de la Comunidad Valenciana, Gran Vía Marques del Turia 19, 46005 Valencia, Spain.

To provide new insight into the pathophysiological mechanisms underlying gas emboli (GE) in bycaught loggerhead sea turtles (), we investigated the vasoactive characteristics of the pulmonary and systemic arteries, and the lung parenchyma (LP). Tissues were opportunistically excised from recently dead animals for studies of vasoactive responses to four different neurotransmitters: acetylcholine (ACh; parasympathetic), serotonin (5HT), adrenaline (Adr; sympathetic) and histamine. The significant amount of smooth muscle in the LP contracted in response to ACh, Adr and histamine. Read More

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http://jeb.biologists.org/lookup/doi/10.1242/jeb.179820
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http://dx.doi.org/10.1242/jeb.179820DOI Listing
December 2018
8 Reads

[Capillary leak syndrome secondary to decompression sickness: A case report].

Rev Med Interne 2019 Jan 17;40(1):38-42. Epub 2018 Oct 17.

Service de médecine hyperbare et expertise plongée (SMHEP), hôpital d'instruction des armées (HIA) Sainte-Anne, BP 600, 83800 Toulon cedex 9, France.

Background: Capillary leak syndrome is a rare type of decompression sickness (DCS) that may be responsible for hypovolemic shock with edema.

Clinical Case: A 21-year-old amateur diver suffered from an inner ear DCS following air diving to 96msw. He presented subsequent deterioration with hypovolemia and facial edema secondary to capillary leak syndrome. Read More

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https://linkinghub.elsevier.com/retrieve/pii/S02488663183065
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http://dx.doi.org/10.1016/j.revmed.2018.07.013DOI Listing
January 2019
10 Reads

[The value of MRI in early diagnosis of dysbaric osteonecrosis].

Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2018 Jun;36(6):454-456

Yangpu Hospital, Tongji University, Shanhai 200090, China.

To investigate the value of MRI in the early diagnosis of diagnosis of dysbaric osteonecrosis. Labor hygiene investigation and occupation health were examined on 52 high pressure operating personnel, were selected for the examination of both shoulders, hips and knees with X-ray and CT scan. The cystic sign in dysbaric osteonecrosis as an important imaging feature, which perform in the MRI examination for T1W I sequence showed low or slightly low signal and T2W I sequence showed high signal, and X-ray and CT have a lower detection rate than MRI. Read More

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http://dx.doi.org/10.3760/cma.j.issn.1001-9391.2018.06.016DOI Listing
June 2018
13 Reads

Body mass index in association with decompression sickness events: cross-sectional study among small-scale fishermen-divers in southeast Mexico.

Undersea Hyperb Med 2018 Jul-Aug;45(4):445-451

UNEXMAR, Universidad Marista de Mérida, Mérida, Yucatán.

Introduction: Decompression sickness is endemic to small-scale fishermen-divers from coastal communities in southeast Mexico; overweight and obesity are also highly prevalent in the region. Existing literature suggests it is possible that fat tissue could play a role in decompression sickness pathophysiology. Our aim in this study is to describe the association between the number and severity of DCS events treated at the hyperbaric program and fishermen-diver body mass index. Read More

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September 2018
5 Reads

Oxygen exposures at NASA's Neutral Buoyancy Lab: a 20-year experience.

Undersea Hyperb Med 2018 Jul-Aug;45(4):427-436

University of Texas Medical Branch, Galveston, Texas.

Astronauts training for extravehicular activity (EVA) operations can spend many hours submerged underwater in a pressurized suit, called an extravehicular mobility unit (EMU), exposed to pressures exceeding 2 atmospheres absolute (ATA). To minimize the risk of decompression sickness (DCS) a 46% nitrox mixture is used. This limits the nitrogen partial pressure, decreasing the risk of DCS. Read More

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September 2018
3 Reads

Fatty diet, active hydrophobic spots, and decompression sickness.

Authors:
Ran Arieli

Diving Hyperb Med 2018 Sep;48(3):197

Corresponding author: The Israel Naval Medical Institute, Israel Defence Forces Medical Corps, Haifa, Israel; Eliachar Research Laboratory, Western Galilee Medical Centre, Nahariya, Israel, 12 Klil-Hakhoresh, Rakefet, D.N. Misgav 2017500, Israel,

In a study of the effect of a fatty diet on decompression bubbles, based on the responses to a questionnaire regarding daily food consumption, the approximate fat intake for each diver was calculated, taking into account the maximum recommended intake for a person doing his type of work. Following hyperbaric exposure, divers were divided into two groups: 'bubblers' (a minimum of the second level on the Kisman-Masurel scale) and 'non-bubblers'. Bubblers had higher fat consumption than non-bubblers (146 ± 39% versus 92 ± 18%). Read More

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http://www.dhmjournal.com/index.php/journals
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http://dx.doi.org/10.28920/dhm48.3.197DOI Listing
September 2018
5 Reads

Inner ear barotrauma in divers: an evidence-based tool for evaluation and treatment.

Diving Hyperb Med 2018 Sep;48(3):186-193

Corresponding author: Otolaryngology-Head and Neck Surgery, 1 Jarrett White Road, Tripler Army Medical Center, Hawaii, USA,

Objective: To systematically search the literature for studies evaluating the typical presentation and testing that is performed for divers with inner ear symptoms and then to create a tool for clinicians when evaluating a diver with inner ear symptoms.

Methods: Nine databases, including PubMed/MEDLINE were systematically searched through 31 January 2018. The PRISMA statement was followed. Read More

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http://dx.doi.org/10.28920/dhm48.3.186-193DOI Listing
September 2018
15 Reads

Reliability of venous gas embolism detection in the subclavian area for decompression stress assessment following scuba diving.

Diving Hyperb Med 2018 Sep;48(3):132-140

French Navy Diving School, Toulon, France.

Introduction: Ultrasonic detection of venous gas emboli (VGE) in the precordial (PRE) region is commonly used in evaluation of decompression stress. While subclavian (SC) VGE detection can also be used to augment and improve the evaluation, no study has rigorously compared VGE grades from both sites as decompression stress indicators.

Methods: This retrospective study examined 1,016 man-dives breathing air extracted from the Defence Research and Development Canada dataset. Read More

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http://dx.doi.org/10.28920/dhm48.3.132-140DOI Listing
September 2018
8 Reads

Decompression sickness, fatness and active hydrophobic spots.

Diving Hyperb Med 2018 Sep;48(3):130-131

Diving Medical Centre, Royal Netherlands Navy, PO Box 10.000, 1780 CA Den Helder, The Netherlands,

Since decompression sickness (DCS) in humans was first described, mankind has embarked on an odyssey to prevent it. The demonstration that decompression releases bubbles, which mainly contain inert gas (nitrogen, helium), into the circulation and that the slower the decompression rate the lesser the incidence of DCS, resulted in 1908 in the publication of the first, reasonably safe diving tables. Besides the development of proper diving tables, the selection of divers is also of importance. Read More

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http://dx.doi.org/10.28920/dhm48.3.130-131DOI Listing
September 2018
2 Reads

Persistent foramen ovale closure in divers with a history of decompression sickness.

Neth Heart J 2018 Nov;26(11):535-539

Department of Cardiology, University Medical Center, Utrecht, The Netherlands.

Objective: To study the effect of percutaneous patent foramen ovale (PFO) closure in divers with a history of decompression sickness (DCS).

Study Design: (1) Retrospective study of patient records and (2) telephonic follow-up. Patients with unexplained decompression sickness, who were referred to a cardiologist with a focus on diving medicine between 2000 and 2017, were included in the study RESULTS: A total of 62 divers with DCS were included. Read More

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http://link.springer.com/10.1007/s12471-018-1153-x
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http://dx.doi.org/10.1007/s12471-018-1153-xDOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6220018PMC
November 2018
9 Reads

Image Gallery: Cutis marmorata as a manifestation of decompression sickness.

Authors:
M Rozenblat M Ziv

Br J Dermatol 2018 Jul;179(1):e1

Emek Medical Center, Department of Dermatology, Afula, Israel.

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http://dx.doi.org/10.1111/bjd.16604DOI Listing

Decreased Incidence of Pulmonary Barotrauma After Discontinuation of Emergency Free Ascent Training.

Aerosp Med Hum Perform 2018 Sep;89(9):816-821

Introduction: Because a significant association between training to perform emergency free ascent (EFA) and the occurrence of pulmonary barotrauma (PBT) was demonstrated in 2006, the Belgian Underwater Federation (BUF) decided to discontinue this procedure. An evaluation was needed 10 yr after the implementation of this change.

Methods: All medical records with a diagnosis of PBT that occurred in Belgium from November 2006 to September 2016 were prospectively collected. Read More

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http://dx.doi.org/10.3357/AMHP.5003.2018DOI Listing
September 2018
2 Reads

Retrospective Evaluation of Clinical Symptoms Due to Mild Hypobaric Hypoxia Exposure in Microgravity.

Aerosp Med Hum Perform 2018 Sep;89(9):792-797

Introduction: A habitat atmosphere of 34% oxygen (O2) and 66% nitrogen (N2) at 8.2 psia (56.5 kPa) is proposed to minimize the risk of decompression sickness during extravehicular activity. Read More

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http://dx.doi.org/10.3357/AMHP.4913.2018DOI Listing
September 2018
2 Reads

White Matter Status of Participants in Altitude Chamber Research and Training.

Aerosp Med Hum Perform 2018 Sep;89(9):777-786

Introduction: Magnetic resonance imaging (MRI) brain scans of U.S. Air Force (USAF) altitude workers show increased white matter hyperintensities (WMH) that appear related to decompression stress. Read More

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http://www.ingentaconnect.com/content/10.3357/AMHP.5090.2018
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http://dx.doi.org/10.3357/AMHP.5090.2018DOI Listing
September 2018
18 Reads

Provocative decompression causes diffuse vascular injury in mice mediated by microparticles containing interleukin-1β.

J Appl Physiol (1985) 2018 Aug 16. Epub 2018 Aug 16.

Emergency Medicine, University of Maryland School of Medicine, United States.

Inflammatory mediators are known to be elevated in association with decompression from elevated ambient pressure, but their role in tissue damage or overt decompression sickness is unclear. Circulating microparticles (MPs) are also know to increase and because interleukin (IL)-1β is packaged within these particles, we hypothesized that IL-1β was responsible for tissue injuries. Here, we demonstrate that elevations of circulating MPs containing up to 9-fold higher concentrations of IL-1β occur while mice are exposed to high air pressure (790 kPa), whereas smaller particles carrying proteins specific to exosomes are not elevated. Read More

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http://dx.doi.org/10.1152/japplphysiol.00620.2018DOI Listing
August 2018
7 Reads

Acute decompression following simulated dive conditions alters mitochondrial respiration and motility.

Am J Physiol Cell Physiol 2018 Nov 15;315(5):C699-C705. Epub 2018 Aug 15.

Department of Anesthesiology and Critical Care, Perelman School of Medicine, University of Pennsylvania , Philadelphia, Pennsylvania.

While barotrauma, decompression sickness, and drowning-related injuries are common morbidities associated with diving and decompression from depth, it remains unclear what impact rapid decompression has on mitochondrial function. In vitro diving simulation was performed with human dermal fibroblast cells subjected to control, air, nitrogen, and oxygen dive conditions. With the exception of the gas mixture, all other related variables, including absolute pressure exposure, dive and decompression rates, and temperature, were held constant. Read More

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https://www.physiology.org/doi/10.1152/ajpcell.00243.2018
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http://dx.doi.org/10.1152/ajpcell.00243.2018DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6293051PMC
November 2018
13 Reads

Course and characteristics of work disability 3 years before and after lumbar spine decompression surgery- a national population-based study.

Sci Rep 2018 Aug 7;8(1):11811. Epub 2018 Aug 7.

Karolinska Institutet, Department of Clinical Neuroscience, Division of Insurance Medicine, Berzeliusv. 3, 171 77, Stockholm, Sweden.

Despite decompression surgery being a widespread intervention for patients with dorsopathies (i.e. back pain) affecting the lumbar spine, the scientific knowledge on patterns and characteristics of work disability before and after the surgery is limited. Read More

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http://dx.doi.org/10.1038/s41598-018-30211-4DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6081436PMC
August 2018
3 Reads

Modeling Tissue and Blood Gas Kinetics in Coastal and Offshore Common Bottlenose Dolphins, .

Front Physiol 2018 17;9:838. Epub 2018 Jul 17.

Chicago Zoological Society's Sarasota Dolphin Research Program, Mote Marine Laboratory, Sarasota, FL, United States.

Bottlenose dolphins () are highly versatile breath-holding predators that have adapted to a wide range of foraging niches from rivers and coastal ecosystems to deep-water oceanic habitats. Considerable research has been done to understand how bottlenose dolphins manage O during diving, but little information exists on other gases or how pressure affects gas exchange. Here we used a dynamic multi-compartment gas exchange model to estimate blood and tissue O, CO, and N from high-resolution dive records of two different common bottlenose dolphin ecotypes inhabiting shallow (Sarasota Bay) and deep (Bermuda) habitats. Read More

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http://dx.doi.org/10.3389/fphys.2018.00838DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6060447PMC
July 2018
2 Reads

Indices of Increased Decompression Stress Following Long-Term Bed Rest.

Front Physiol 2018 18;9:442. Epub 2018 Jul 18.

Department of Automation, Biocybernetics and Robotics, Jožef Stefan Institute, Ljubljana, Slovenia.

Human extravehicular activity (EVA) is essential to space exploration and involves risk of decompression sickness (DCS). On Earth, the effect of microgravity on physiological systems is simulated in an experimental model where subjects are confined to a 6° head-down bed rest (HDBR). This model was used to investigate various resting and exercise regimen on the formation of venous gas emboli (VGE), an indicator of decompression stress, post-hyperbaric exposure. Read More

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http://dx.doi.org/10.3389/fphys.2018.00442DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6058089PMC

Resting Metabolic Rate and Lung Function in Wild Offshore Common Bottlenose Dolphins, , Near Bermuda.

Front Physiol 2018 17;9:886. Epub 2018 Jul 17.

Chicago Zoological Society's Sarasota Dolphin Research Program, Mote Marine Laboratory, Sarasota, FL, United States.

Diving mammals have evolved a suite of physiological adaptations to manage respiratory gases during extended breath-hold dives. To test the hypothesis that offshore bottlenose dolphins have evolved physiological adaptations to improve their ability for extended deep dives and as protection for lung barotrauma, we investigated the lung function and respiratory physiology of four wild common bottlenose dolphins () near the island of Bermuda. We measured blood hematocrit (Hct, %), resting metabolic rate (RMR, l O ⋅ min), tidal volume (, l), respiratory frequency (, breaths ⋅ min), respiratory flow (l ⋅ min), and dynamic lung compliance (, l ⋅ cmHO) in air and in water, and compared measurements with published results from coastal, shallow-diving dolphins. Read More

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http://dx.doi.org/10.3389/fphys.2018.00886DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6056772PMC
July 2018
15 Reads

Tirofiban, a Glycoprotein IIb/IIIa Antagonist, Has a Protective Effect on Decompression Sickness in Rats: Is the Crosstalk Between Platelet and Leukocytes Essential?

Front Physiol 2018 11;9:906. Epub 2018 Jul 11.

Département Environnement Opérationnel, Unité Environnements Extrêmes, Institut de Recherche Biomédicale des Armées - Equipe Résidente de Recherche Subaquatique Opérationnelle (Armed Forces Biomedical Research Institute - Resident Operational Subaquatic Research Team), Toulon, France.

In its severest forms, decompression sickness (DCS) may extend systemically and/or induce severe neurological deficits, including paralysis or even death. It seems that the sterile and ischemic inflammatory phenomena are consecutive to the reaction of the bubbles with the organism and that the blood platelet activation plays a determinant role in the development of DCS. According to the hypotheses commonly put forward, the bubbles could either activate the platelets by direct contact or be the cause of abrasion of the vascular epithelium, which would expose the basal plate glycogen and then prompt the platelets to activate. Read More

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http://dx.doi.org/10.3389/fphys.2018.00906DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6050390PMC
July 2018
11 Reads

Stability of residual hearing and cochlear implant function following multiple scuba dives: case report.

Undersea Hyperb Med 2018 May-Jun;45(3):371-376

Center for Hyperbaric Medicine, Department of Medicine, Virginia Mason Medical Center, Seattle, Washington U.S.

Objectives: There are limited data regarding the safety of cochlear implants during exposure to pressure changes associated with scuba and hyperbaric oxygen therapy. There are no data regarding the effects of barometric pressure changes on preserved low-frequency hearing after cochlear implantation. This case report evaluates the effect of barometric pressure changes on preserved low-frequency hearing after cochlear implantation. Read More

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July 2018
2 Reads

PDTC ameliorates decompression induced-lung injury caused by unsafe fast buoyancy ascent escape via inhibition of NF-κB pathway.

Undersea Hyperb Med 2018 May-Jun;45(3):351-362

Second Military Medical University, Shanghai, China.

Nuclear factor kappa B (NF-κB) is the critical transcriptional factor in the pathogenesis of acute lung injury (ALI). NF-κB regulates the expression changes of inflammatory factors such as tumor necrosis factor alpha (TNF-α), interleukin-1β (IL-1β) and interleukin 6 (IL-6). In a previous study we showed that decompression sickness (DCS) caused by simulated unsafe fast buoyancy ascent escape (FBAE) could result in ALI, which was characterized by expression changes of inflammatory factors in rat lung tissue. Read More

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July 2018
2 Reads

The Gradient Perfusion Model Part 3: An extraordinary case of decompression sickness.

Undersea Hyperb Med 2018 May-Jun;45(3):307-311

Long Beach Memorial Medical Center, Hyperbaric Medical Program, Long Beach, California U.S.

Introduction: Decompression sickness (DCS) has been associated with unusual circumstances such as breath-hold diving, shallow depths, and short bottom times. We report a case of DCS with an extraordinary cause and course.

Materials And Methods: A 72-year-old healthy Hispanic female was referred to our 24/7 Hyperbaric Medicine Unit for emergency hyperbaric oxygen recompression treatment (HBO2 RCT) after developing lower-extremity paralysis following a hyperbaric air exposure in a homemade hyperbaric chamber. Read More

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July 2018
17 Reads