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https://www.readbyqxmd.com/read/28296928/the-probability-and-severity-of-decompression-sickness
#1
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
#2
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.
March 2, 2017: Headache
https://www.readbyqxmd.com/read/28250656/new-cytotoxic-cembranoid-from-indonesian-soft-coral-sarcophyton-sp
#3
Hedi Indra Januar, Neviaty Putri Zamani, Dedi Soedharma, Ekowati Chasanah
CONTEXT: Sarcophyton is a soft coral species that contains various secondary metabolites with cytotoxic activity. The production of cytotoxic compounds in soft corals is suggested as their allelochemical to win space competition. Therefore, if a particular soft coral species dominates a reef area, it may suggest to contain interesting bioactive compounds. AIMS: This research aimed to characterize the cytotoxic compounds in dominant soft coral species (Sarcophyton sp...
January 2017: Pharmacognosy Research
https://www.readbyqxmd.com/read/28249344/psychotropic-drug-use-in-recreational-scuba-divers-and-its-effect-on-severe-narcosis
#4
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...
March 1, 2017: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/28228681/discovery-of-a-new-species-of-hermit-crab-of-the-genus-pylopaguropsis-alcock-1905-from-the-caribbean-den-commensal-or-cleaner-crustacea-anomura-paguridae
#5
Rafael Lemaitre
A new secretive, yet brightly colored hermit crab species of the family Paguridae, Pylopaguropsis mollymulleraesp. n., is fully described based on specimens from the reefs of Bonaire, Lesser Antilles, southern Caribbean Sea. Populations of this new species were discovered and photographed in the Bonaire National Marine Park under a large coral ledge, at a depth of 13.7 m, living in crevices known by scuba divers to serve as den to a pair of "flaming reef lobsters" Enoplometopus antillensis, or a "broad banded moray" Channomuraena vittata...
2017: ZooKeys
https://www.readbyqxmd.com/read/28183028/estimates-of-the-non-market-value-of-sea-turtles-in-tobago-using-stated-preference-techniques
#6
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
#7
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
#8
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
#9
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/28068374/a-five-year-in-situ-growth-study-on-shallow-water-populations-of-the-gorgonian-octocoral-calcigorgia-spiculifera-in-the-gulf-of-alaska
#10
Robert P Stone, Patrick W Malecha, Michele M Masuda
Gorgonian octocorals are the most abundant corals in Alaska where they provide important structural habitat for managed species of demersal fish and invertebrates. Fifty-nine gorgonian species have been reported from Alaska waters but little is known about their life history characteristics to help us gauge their ability to recover from seafloor disturbance. Colonies of the holaxonian Calcigorgia spiculifera were tagged beginning in 1999 at three sites in Chatham Strait, Southeast Alaska, using scuba and their growth measured annually for up to 5 years...
2017: PloS One
https://www.readbyqxmd.com/read/28062791/hooked-on-a-career-with-fish
#11
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/28060862/thirty-year-old-paradigm-about-unpalatable-perch-egg-strands-disclaimed-by-the-freshwater-top-predator-the-european-catfish-silurus-glanis
#12
Lukáš Vejřík, Ivana Vejříková, Luboš Kočvara, Zuzana Sajdlová, Son Chung Hoang The, Marek Šmejkal, Jiří Peterka, Martin Čech
So far, perch egg strands have been considered unpalatable biological material. However, we repeatedly found egg strands of European perch (Perca fluviatilis) in the diet of European catfish (Silurus glanis) caught by longlines in Milada and Most Lakes, Czech Republic. The finding proves that perch egg strands compose a standard food source for this large freshwater predatory fish. It extends the present knowledge on catfish foraging plasticity, showing it as an even more opportunistic feeder. Utilization of perch egg strands broadens the catfish diet niche width and represents an advantage against other fish predators...
2017: PloS One
https://www.readbyqxmd.com/read/27981464/assessing-coral-health-and-disease-from-digital-photographs-and-in-situ-surveys
#13
C A Page, S N Field, F J Pollock, J B Lamb, G Shedrawi, S K Wilson
Methods for monitoring the status of marine communities are increasingly adopting the use of images captured in the field. However, it is not always clear how data collected from photographic images relate to historic data collected using traditional underwater visual census methods. Here, we compare coral health and disease data collected in situ by scuba divers with photographic images collected simultaneously at 12 coral reef sites. Five globally relevant coral diseases were detected on 194 colonies from in situ surveys and 79 colonies from photos, whilst 698 colonies from in situ surveys and 535 colonies from photos exhibited signs of compromised health other than disease...
January 2017: Environmental Monitoring and Assessment
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
#14
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...
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
#15
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
https://www.readbyqxmd.com/read/27966205/increasing-the-probability-of-surviving-loss-of-consciousness-underwater-when-using-a-rebreather
#16
REVIEW
Paul Haynes
Re-circulating underwater breathing apparatus (rebreathers) have become increasingly popular amongst sport divers. In comparison to open-circuit scuba, rebreathers are complex life support equipment that incorporates many inherent failure modes and potential for human error. This individually or in combination can lead to an inappropriate breathing gas. Analysis of rebreather diving incidents suggests that inappropriate breathing gas is the most prevalent disabling agent. This can result in spontaneous loss of consciousness (LoC), water aspiration and drowning...
December 2016: Diving and Hyperbaric Medicine: the Journal of the South Pacific Underwater Medicine Society
https://www.readbyqxmd.com/read/27966203/estimating-the-risk-of-a-scuba-diving-fatality-in-australia
#17
John Lippmann, Christopher Stevenson, David McD Taylor, Jo Williams
INTRODUCTION: There are few data available on which to estimate the risk of death for Australian divers. This report estimates the risk of a scuba diving fatality for Australian residents, international tourists diving in Queensland, and clients of a large Victorian dive operator. METHODOLOGY: Numerators for the estimates were obtained from the Divers Alert Network Asia-Pacific dive fatality database. Denominators were derived from three sources: Participation in Exercise, Recreation and Sport Surveys, 2001-2010 (Australian resident diving activity data); Tourism Research Australia surveys of international visitors to Queensland 2006-2014 and a dive operator in Victoria 2007-2014...
December 2016: Diving and Hyperbaric Medicine: the Journal of the South Pacific Underwater Medicine Society
https://www.readbyqxmd.com/read/27966202/provisional-report-on-diving-related-fatalities-in-australian-waters-in-2011
#18
John Lippmann, Christopher Lawrence, Andrew Fock, Scott Jamieson, Richard Harris
INTRODUCTION: An individual case review of diving-related deaths reported as occurring in Australia in 2011 was conducted as part of the DAN Asia-Pacific dive fatality reporting project. METHOD: The case studies were compiled using reports from witnesses, the police and coroners. In each case, the particular circumstances of the accident and, where available, details from the post-mortem examination are provided. A chain of events analysis was conducted for each case...
December 2016: Diving and Hyperbaric Medicine: the Journal of the South Pacific Underwater Medicine Society
https://www.readbyqxmd.com/read/27936044/comparison-of-reef-fish-survey-data-gathered-by-open-and-closed-circuit-scuba-divers-reveals-differences-in-areas-with-higher-fishing-pressure
#19
Andrew E Gray, Ivor D Williams, Kostantinos A Stamoulis, Raymond C Boland, Kevin C Lino, Brian B Hauk, Jason C Leonard, John J Rooney, Jacob M Asher, Keolohilani H Lopes, Randall K Kosaki
Visual survey by divers using open-circuit (OC) SCUBA is the most widely used approach to survey coral reef fishes. Therefore, it is important to quantify sources of bias in OC surveys, such as the possibility that avoidance of OC divers by fishes can lead to undercounting in areas where targeted species have come to associate divers with a risk of being speared. One potential way to reduce diver avoidance is to utilize closed circuit rebreathers (CCRs), which do not produce the noise and bubbles that are a major source of disturbance associated with OC diving...
2016: PloS One
https://www.readbyqxmd.com/read/27932905/macrofaunal-assemblages-associated-with-the-sponge-sarcotragus-foetidus-schmidt-1862-porifera-demospongiae-at-the-coasts-of-cyprus-and-greece
#20
Christina Pavloudi, Magdalini Christodoulou, Michalis Mavidis
BACKGROUND: This paper describes a dataset of macrofaunal organisms associated with the sponge Sarcotragus foetidus Schmidt, 1862, collected by scuba diving from two sampling sites: one in Greece (North Aegean Sea) and one in Cyprus (Levantine Sea). NEW INFORMATION: This dataset includes macrofaunal taxa inhabiting the demosponge Sarcotragus foetidus and contributes to the ongoing efforts of the Ocean Biogeographic Information System (OBIS) which aims at filling the gaps in our current knowledge of the world's oceans...
2016: Biodiversity Data Journal
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