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https://www.readbyqxmd.com/read/28439981/evolution-of-the-plasma-proteome-of-divers-before-and-after-a-single-scuba-dive
#1
Jacky Lautridou, Vianney Pichereau, Sébastien Artigaud, Benoit Bernay, Otto Barak, Ryan Hoiland, Andrew T Lovering, Ingrid Eftedal, Zeljko Dujic, François Guerrero
PURPOSE: Decompression sickness (DCS) is a poorly understood and complex systemic disease caused by inadequate desaturation following a reduction of ambient pressure. A previous proteomic study of ours showed that DCS occurrence but not diving was associated with changes in the plasma proteome in rats, including a dramatic decrease of abundance of the tetrameric form of Transthyretin (TTR). The present study aims to assess the impact on the human blood proteome of a dive inducing significant decompression stress but without inducing DCS symptoms...
April 25, 2017: Proteomics. Clinical Applications
https://www.readbyqxmd.com/read/28429454/scuba-diving-patent-foramen-ovale-and-heart-rhythm-disturbances-the-role-of-underwater-holter-monitoring-case-report
#2
Szymon Olędzki, Andrzej Wojtarowicz, Edyta Płońska-Gościniak, Maciej Lewandowski, Jarosław Gorący
Patent foramen ovale (PFO) is thought to be a risk factor for decompression illness (DCI). Catheter-based closure procedure reduces the risk of DCI in selected scuba divers with PFO. Major complication of invasive approach are rare, minor, especially heart rhythm disturbances are reported relatively often. We describe a case of 41-year-old diver, who underwent PFO closure due to recurrent DCI events. Afterward, he experienced no DCI symptoms; however, he complained about feeling of the heart beating during a submersion...
April 21, 2017: Annals of Noninvasive Electrocardiology
https://www.readbyqxmd.com/read/28398949/sildenafil-possible-prophylaxis-against-swimming-induced-pulmonary-edema-sipe
#3
Stefanie D Martina, John J Freiberger, Dionne F Peacher, Michael J Natoli, Eric A Schinazi, Dawn N Kernagis, Jennifer Av Potter, Claire E Otteni, Richard E Moon
Swimming-induced pulmonary edema (SIPE) occurs during swimming and scuba diving, usually in cold water, in susceptible healthy individuals, especially military recruits and triathletes. We have previously demonstrated that pulmonary artery pressure (PAP) and pulmonary artery wedge pressure (PAWP) are higher during immersed exercise in SIPE-susceptible individuals vs. controls, confirming that SIPE is a form of hemodynamic pulmonary edema. Oral sildenafil 50 mg 1 hour before immersed exercise reduced PAP and PAWP, suggesting that sildenafil may prevent SIPE...
April 11, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28397524/effects-of-oxygen-enriched-air-on-cognitive-performance-during-scuba-diving-an-open-water-study
#4
Anne-Kathrin Brebeck, Andreas Deussen, Henning Schmitz-Peiffer, Ursula Range, Costantino Balestra, Sinclair Cleveland, Jochen D Schipke
Backround: Nitrogen narcosis impairs cognitive function, a fact relevant during SCUBA-diving. Oxygen-enriched air (nitrox) became popular in recreational diving, while evidence of its advantages over air is limited. AIM: Compare effects of nitrox28 and air on two psychometric tests. METHODS: In this prospective, double-blind, open-water study, 108 advanced divers (38 females) were randomized to an air or a nitrox-group for a 60-min dive to 24 m salt water. Breathing gas effects on cognitive performance were assessed during the dive using a short- and long-term memory test and a number connection test...
April 11, 2017: Research in Sports Medicine
https://www.readbyqxmd.com/read/28390222/recovery-of-deceased-scuba-divers-from-within-flooded-subterranean-caves
#5
Peter Buzzacott, Craig Nelson, Ken Hill, Lamar Hires
Each year in the US three divers, on average, perish inside flooded caves and their remains require recovery. Recovery is a hazardous undertaking often performed by members of the International Underwater Cave Rescue and Recovery (IUCRR) team, in collaboration with local law enforcement and medical examiners/coroners. Since forming in 1999 the IUCRR have established standard recovery procedures for cave diving fatalities. This article reviews each stage of the recovery; the call out, arrival on site, the search, recording/preserving the evidence, the recovery, the handover and post-recovery record-keeping...
March 27, 2017: Forensic Science International
https://www.readbyqxmd.com/read/28385268/macroinvertebrate-communities-from-the-shallow-soft-bottoms-of-deception-island-southern-ocean-a-paradise-for-opportunists
#6
Carlos Angulo-Preckler, Carlos Leiva, Conxita Avila, Sergi Taboada
Deception Island (South Shetland Islands) is an atypical spot in its Antarctic context, being a still active volcano with a submerged caldera. Although the sea-floor of its enclosed bay, Port Foster, has been extensively studied from 40 m down, little is known about the macrozoobenthic composition of its shallower areas. The aim of this study was to characterize the so far unexplored soft-bottom marine macroinvertebrate communities living within the first few meters depth in Port Foster. Eight sampling stations were selected, and three replicates per station and depth (5 and 15 m) were collected by SCUBA diving using 0...
March 29, 2017: Marine Environmental Research
https://www.readbyqxmd.com/read/28364033/case-report-acute-facial-swelling-in-a-recreational-technical-diver
#7
Peter Buzzacott, William K Dolen, James Chimiak
A recreational scuba diver wore a second scuba regulator against his face during a scuba dive, attached by an elastic rubber cord necklace. After surfacing, the diver's left face became swollen. Through a process of elimination all other items of scuba equipment were excluded as potential causes. A dive with the same equipment minus the necklace confirmed the involvement of the necklace in the pathogenesis of the hypersensitive reaction. In vitro ImmunoCap IgE assay was positive to latex (1.30 kUa/L), subsequent patch testing for contact dermatitis provoked a reaction for benzophenone-4, (a UV stabalizer) and Fourier Transform Infra Red spectroscopy identified the elastic as ethylene propylene rubber, containing additional unidentified compounds...
April 2017: Physiological Reports
https://www.readbyqxmd.com/read/28357826/anton-s-syndrome-as-a-presentation-of-decompression-illness
#8
Charles Paul Azzopardi, Lyubisa Matity, Stephen Muscat
We present a case of a patient with Anton's syndrome due to decompression illness (DCI) after recreational scuba diving. Visual anosognosia, or denial of loss of vision, which is associated with lack of awareness regarding visual loss in the setting of cortical blindness, is known as Anton's syndrome (also termed Anton-Babinski syndrome). Our patient presented with progressive neurological DCI treated with repeated recompression. The anosogosia resolved after 48 h. Subsequent echocardiography revealed a persistent (patent) foramen ovale...
March 2017: Diving and Hyperbaric Medicine: the Journal of the South Pacific Underwater Medicine Society
https://www.readbyqxmd.com/read/28357819/a-comparative-evaluation-of-two-decompression-procedures-for-technical-diving-using-inflammatory-responses-compartmental-versus-ratio-deco
#9
Enzo Spisni, Claudio Marabotti, Luigia De Fazio, Maria Chiara Valerii, Elena Cavazza, Stefano Brambilla, Klarida Hoxha, Antonio L'Abbate, Pasquale Longobardi
INTRODUCTION: The aim of this study was to compare two decompression procedures commonly adopted by technical divers: the ZH-L16 algorithm modified by 30/85 gradient factors (compartmental decompression model, CDM) versus the 'ratio decompression strategy' (RDS). The comparison was based on an analysis of changes in diver circulating inflammatory profiles caused by decompression from a single dive. METHODS: Fifty-one technical divers performed a single trimix dive to 50 metres' sea water (msw) for 25 minutes followed by enriched air (EAN50) and oxygen decompression...
March 2017: Diving and Hyperbaric Medicine: the Journal of the South Pacific Underwater Medicine Society
https://www.readbyqxmd.com/read/28356403/short-and-long-term-effects-of-diving-on-pulmonary-function
#10
Kay Tetzlaff, Paul S Thomas
The diving environment provides a challenge to the lung, including exposure to high ambient pressure, altered gas characteristics and cardiovascular effects on the pulmonary circulation. Several factors associated with diving affect pulmonary function acutely and can potentially cause prolonged effects that may accumulate gradually with repeated diving exposure. Evidence from experimental deep dives and longitudinal studies suggests long-term adverse effects of diving on the lungs in commercial deep divers, such as the development of small airways disease and accelerated loss of lung function...
March 31, 2017: European Respiratory Review: An Official Journal of the European Respiratory Society
https://www.readbyqxmd.com/read/28296928/the-probability-and-severity-of-decompression-sickness
#11
Laurens E Howle, Paul W Weber, Ethan A Hada, Richard D Vann, Petar J Denoble
Decompression sickness (DCS), which is caused by inert gas bubbles in tissues, is an injury of concern for scuba divers, compressed air workers, astronauts, and aviators. Case reports for 3322 air and N2-O2 dives, resulting in 190 DCS events, were retrospectively analyzed and the outcomes were scored as (1) serious neurological, (2) cardiopulmonary, (3) mild neurological, (4) pain, (5) lymphatic or skin, and (6) constitutional or nonspecific manifestations. Following standard U.S. Navy medical definitions, the data were grouped into mild-Type I (manifestations 4-6)-and serious-Type II (manifestations 1-3)...
2017: PloS One
https://www.readbyqxmd.com/read/28251616/migraine-with-neurological-features-in-a-scuba-diver-with-a-patent-foramen-ovale
#12
Ashhar Ali, A David Rothner
Neurologic complications of decompression sickness have been observed for over half of a century. Little is known, however, about the risk of diving in patients that suffer from migraine with aura (MWA). We report the case of a pediatric patient with a history of migraine with aura, who was later found to have a PFO, who developed headache with neurological symptoms during a scuba diving lesson.
April 2017: Headache
https://www.readbyqxmd.com/read/28249344/psychotropic-drug-use-in-recreational-scuba-divers-and-its-effect-on-severe-narcosis
#13
Thierry Krummel, Alicia Thiery, Marion Villain, Bernard Schittly, Benoit Brouant
Recreational scuba diving is no longer reserved for young healthy individuals, and as a result, medical drug consumption is on the rise in the diving population. Due to the possible potentiation of nitrogen narcosis by psychotropic drugs, the latter are hence discouraged and are subject to contraindications for practice. However, there are no available experimental data to support this theoretical assumption. The objective of this study is to investigate whether psychotropic drug users are more at risk of severe narcosis...
April 2017: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/28183028/estimates-of-the-non-market-value-of-sea-turtles-in-tobago-using-stated-preference-techniques
#14
Michelle Cazabon-Mannette, Peter W Schuhmann, Adrian Hailey, Julia Horrocks
Economic benefits are derived from sea turtle tourism all over the world. Sea turtles also add value to underwater recreation and convey non-use values. This study examines the non-market value of sea turtles in Tobago. We use a choice experiment to estimate the value of sea turtle encounters to recreational SCUBA divers and the contingent valuation method to estimate the value of sea turtles to international tourists. Results indicate that turtle encounters were the most important dive attribute among those examined...
February 6, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28164160/pseudomonas-aeruginosa-as-an-etiologic-agent-of-nephrolithiasis-in-deep-water-divers
#15
Victoria Y Bird, Ryan Chastain-Gross, Raymond Sutkowski, Vincent G Bird, Paulas Vyas, Ryan Joseph
Background: A number of occupations and professions may be associated with unique hazards relevant to urologic care. Case Presentation: We relate the presentation, care, and the occupational hazard of urinary tract infection (UTI), presenting as cystitis and pyelonephritis, with stone formation in a scuba diver. The patient voiced concern that his diving suit malfunction was related to his UTI and stone disease. We review the risk of UTI in the diving environment. We also report the development of infection-related stone in this case...
2017: Journal of Endourology Case Reports
https://www.readbyqxmd.com/read/28128653/possible-central-nervous-system-oxygen-toxicity-seizures-among-us-recreational-air-or-enriched-air-nitrox-open-circuit-diving-fatalities-2004-2013
#16
P Buzzacott, P J Denoble
BACKGROUND: The first diver certification programme for recreational 'enriched air nitrox' (EAN) diving was released in 1985. Concerns were expressed that many EAN divers might suffer central nervous system (CNS) oxygen toxicity seizures and drown. METHODS: US fatalities on open-circuit scuba occurring between 2004-2013, where the breathing gas was either air or EAN, were identified. Causes of death and preceding circumstances were examined by a medical examiner experienced in diving autopsies...
2017: Brain Injury: [BI]
https://www.readbyqxmd.com/read/28095955/preconditioning-to-reduce-decompression-stress-in-scuba-divers
#17
Peter Germonpré, Costantino Balestra
BACKGROUND: Using ultrasound imaging, vascular gas emboli (VGE) are observed after asymptomatic scuba dives and are considered a key element in the potential development of decompression sickness (DCS). Diving is also accompanied with vascular dysfunction, as measured by flow-mediated dilation (FMD). Previous studies showed significant intersubject variability to VGE for the same diving exposure and demonstrated that VGE can be reduced with even a single pre-dive intervention. Several preconditioning methods have been reported recently, seemingly acting either on VGE quantity or on endothelial inflammatory markers...
February 1, 2017: Aerospace Medicine and Human Performance
https://www.readbyqxmd.com/read/28062791/hooked-on-a-career-with-fish
#18
Lydia Brown
Lydia Brown tried many new hobbies while at vet school and found her favourite was scuba diving. That led to a lifelong passion for the sea 'and everything in it'. Unsurprisingly, she soon found herself beginning a career in aquaculture.
January 7, 2017: Veterinary Record
https://www.readbyqxmd.com/read/27966207/partial-retraction-of-lawrence-chd-chen-iyd-the-effect-of-scuba-diving-on-airflow-obstruction-in-divers-with-asthma-diving-and-hyperbaric-medicine-2016-march-46-1-11-14
#19
Christopher Hd Lawrence, Isobel Yd Chen
Consistent with the Committee on Publication Ethics guidelines, we the above authors are initiating a partial retraction of our paper: Lawrence CHD, Chen IYD. The effect of scuba diving on airflow obstruction in divers with asthma. Diving and Hyperbaric Medicine. 2016 March;46(1):11-14. We wish to make the following statement: "Following independent statistical review of our paper we would like to withdraw the following: all subgroup statistical analysis including Table 1 and the statement "∗ P 〈 0.05, non-asthmatic controls vs Group A3 asthmatics" in the legend of Figure 2; the discussion statement: "We hope that these data will provide practitioners assessing and risk stratifying people with asthma prior to diving with a modest evidence basis on which to advise them of their relative risk of airflow obstruction compared to the normal population...
December 2016: Diving and Hyperbaric Medicine: the Journal of the South Pacific Underwater Medicine Society
https://www.readbyqxmd.com/read/27966206/middle-ear-barotrauma-causing-transient-facial-nerve-paralysis-after-scuba-diving
#20
Matthew Lee Carmichael, K Paul Boyev
Middle ear barotrauma is a well known entity with typical injury occurring when diving or ascending in a commercial jetliner. Patients often present with symptoms of acute onset otalgia, hearing loss and sometimes haemotympanum (with or without tympanic membrane perforation). On rare occasions, facial nerve paralysis can occur when the tympanic segment of the facial nerve is dehiscent within the middle ear. We present a case of spontaneously resolving facial nerve palsy associated with middle ear barotrauma following a brief, shallow dive...
December 2016: Diving and Hyperbaric Medicine: the Journal of the South Pacific Underwater Medicine Society
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