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https://www.readbyqxmd.com/read/28095955/preconditioning-to-reduce-decompression-stress-in-scuba-divers
#1
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/28080899/health-and-nutritional-assessment-of-free-ranging-eastern-indigo-snakes-drymarchon-couperi-in-georgia-united-states
#2
S Emmanuelle Knafo, Terry M Norton, Mark Mitchell, Dirk J Stevenson, Natalie Hyslop, Robert Poppenga, Marcie Oliva, Tai Chen, Carolyn Cray, Samantha E J Gibbs, Lance Durden, Nancy Stedman, Stephen Divers, Ellen Dierenfeld
Clinical pathology and nutritional parameters are useful in evaluating and monitoring threatened and endangered wildlife populations, but reference ranges for most snake species are lacking. From 2001 to 2005, health assessments were performed on 58 eastern indigo snakes (EIS) (Drymarchon couperi) captured in the wild in southeastern Georgia, United States. Health and nutritional assessments performed included hematology, serum biochemistry, fat-soluble vitamins, heavy metals, pesticide contaminants, parasitology, and surveys of other pathogens...
December 2016: Journal of Zoo and Wildlife Medicine: Official Publication of the American Association of Zoo Veterinarians
https://www.readbyqxmd.com/read/28074326/minimally-invasive-staging-surgery-in-women-with-early-stage-endometrial-cancer-analysis-of-the-national-cancer-data-base
#3
Amy J Bregar, Alexander Melamed, Elisabeth Diver, Joel T Clemmer, Shitanshu Uppal, John O Schorge, Laurel W Rice, Marcela G Del Carmen, J Alejandro Rauh-Hain
PURPOSE: The aim of this study was to determine factors associated with the adoption of minimally invasive surgery (MIS) compared with laparotomy in the treatment of endometrial cancer and to compare surgical outcomes and survival between these two surgical modalities. METHODS: We utilized the National Cancer Data Base (NCDB) to identify women diagnosed with presumed early-stage endometrial cancer between 2010 and 2012. We also identified factors associated with the performance of MIS and utilized propensity score matching to create a matched cohort of women who underwent minimally invasive staging surgery or laparotomy for surgical staging...
January 10, 2017: Annals of Surgical Oncology
https://www.readbyqxmd.com/read/28063666/development-of-a-clinical-applicable-graphical-user-interface-to-automatically-detect-exercise-oscillatory-ventilation-the-vodex-tool
#4
Justien Cornelis, Tim Denis, Paul Beckers, Christiaan Vrints, Dirk Vissers, Maggy Goossens
BACKGROUND: Cardiopulmonary exercise testing (CPET) gained importance in the prognostic assessment of especially patients with heart failure (HF). A meaningful prognostic parameter for early mortality in HF is exercise oscillatory ventilation (EOV). This abnormal respiratory pattern is recognized by hypo- and hyperventilation during CPET. Up until now, assessment of EOV is mainly done upon visual agreement or manual calculation. The purpose of this research was to automate the interpretation of EOV so this prognostic parameter could be readily investigated during CPET...
December 29, 2016: International Journal of Cardiology
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
#5
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/28060323/a-model-to-simulate-clinically-relevant-hypoxia-in-humans
#6
Lars Eichhorn, Florian Kessler, Volker Böhnert, Felix Erdfelder, Anja Reckendorf, Rainer Meyer, Richard K Ellerkmann
In case of apnea, arterial partial pressure of oxygen (pO2) decreases, while partial pressure of carbon dioxide (pCO2) increases. To avoid damage to hypoxia sensitive organs such as the brain, compensatory circulatory mechanisms help to maintain an adequate oxygen supply. This is mainly achieved by increased cerebral blood flow. Intermittent hypoxia is a commonly seen phenomenon in patients with obstructive sleep apnea. Acute airway obstruction can also result in hypoxia and hypercapnia. Until now, no adequate model has been established to simulate these dynamics in humans...
December 22, 2016: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28031856/small-bowel-obstruction-attributable-to-phytobezoar
#7
Nasrin Razavianzadeh, Behzad Foroutan, Farhad Honarvar, Mohammad Forozeshfard
Small bowel obstruction (SBO) is a common condition encountered in surgical practice. Literature shows divers and many different etiologies for intestinal obstruction. However, bezoars are rarely reported as an etiological factor. A bezoar happens most commonly in patients with impaired gastrointestinal motility. There are four types of bezoars: phytobezoars, trichobezoars, pharmacobezoars and lactobezoars. The most common type is phytobezoars, which are composed of undigested fiber from vegetables or fruits especially persimmons...
December 2016: Oxford Medical Case Reports
https://www.readbyqxmd.com/read/28029291/evaluation-of-gastroscopy-and-biopsy-of-the-proventriculus-and-ventriculus-in-pigeons-columba-livia
#8
Izidora Sladakovic, Angela E Ellis, Stephen J Divers
OBJECTIVE To evaluate the efficacy and safety of gastroscopy and biopsy of the proventriculus and ventriculus in pigeons (Columba livia). ANIMALS 15 adult pigeons. PROCEDURES Each pigeon was anesthetized, and the upper gastrointestinal tract (from the cervical portion of the esophagus to the ventriculus) was endoscopically evaluated by use of a rigid endoscope inserted orally. Saline (0.9% NaCl) solution was orally infused to achieve lumen dilation and visibility. Two mucosal biopsy specimens were collected from each of the proventriculus and ventriculus, histologically evaluated, and graded for crush artifacts and depth...
January 2017: American Journal of Veterinary Research
https://www.readbyqxmd.com/read/28025931/a-review-of-clinical-trial-endpoints-of-patients-with-pulmonary-arterial-hypertension-and-chronic-thromboembolic-pulmonary-hypertension-and-how-they-relate-to-patient-outcomes-in-the-united-states
#9
Christine Divers, David Platt, Edward Wang, Jay Lin, Melissa Lingohr-Smith, Stephen C Mathai
: Pulmonary arterial hypertension (PAH) and chronic thromboembolic pulmonary hypertension (CTEPH) are subgroups of pulmonary hypertension and are considered rare diseases. Understanding how endpoints of clinical trials (and patient registry studies) of patients with PAH and CTEPH are associated with patient outcomes is important in order to address the concerns of patients, health care providers, decision makers, and payers. The purpose of this review was to examine how endpoints used in clinical trials and patient registry studies are associated with outcomes of patients with PAH and CTEPH...
January 2017: Journal of Managed Care & Specialty Pharmacy
https://www.readbyqxmd.com/read/28011096/minimally-invasive-radical-hysterectomy-for-cervical-cancer-is-associated-with-reduced-morbidity-and-similar-survival-outcomes-compared-with-laparotomy
#10
Elisabeth Diver, Emily Hinchcliff, Allison Gockley, Alexander Melamed, Leah Contrino, Sarah Feldman, Whitfield Growdon
STUDY OBJECTIVE: In cervical cancer, there are limited randomized trials to indicate whether patient outcomes are equivalent after radical hysterectomy (RH) via minimally invasive (MIS) or traditional laparotomy (XL) approach. The aim of this study was to assess patient outcomes of women with cervical cancer undergoing upfront RH at two large academic institutions to determine if mode of surgery affects patient outcomes. DESIGN: A retrospective cohort study Design classification: Canadian Task Force Classification II-1 SETTING: Two academic medical institutions in the United States from 2000 to 2013 PATIENTS: Women undergoing upfront RH for cervical cancer INTERVENTION: Minimally invasive techniques (laparoscopic and robotic) for RH, as compared with XL MEASUREMENTS AND MAIN RESULTS: 383 women met eligibility requirements...
December 20, 2016: Journal of Minimally Invasive Gynecology
https://www.readbyqxmd.com/read/28009387/diving-exposure-and-health-effects-in-divers-working-in-different-areas-of-professional-diving
#11
Ågot Irgens, Kari Troland, Rune Djurhuus, Marit Grønning
BACKGROUND: The aim of the present study was to compare diving exposure and health effects in different areas of professional diving. MATERIALS AND METHODS: The Norwegian Labour Inspection Authority's Diving Register contains data on all professional inshore divers who have held a diving certificate at any time since 1980. Of these divers, the "Norwegian diver 2011" questionnaire was completed by 2848 (48.7%). A total of 1167 male divers reported that they often worked in one area of diving only (rescue diving, diving instruction, fish farming, quay/construction work and offshore/oil related)...
2016: International Maritime Health
https://www.readbyqxmd.com/read/27981464/assessing-coral-health-and-disease-from-digital-photographs-and-in-situ-surveys
#12
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
#13
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/27966205/increasing-the-probability-of-surviving-loss-of-consciousness-underwater-when-using-a-rebreather
#14
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
#15
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
#16
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/27966201/the-demographics-and-diving-behaviour-of-dan-asia-pacific-members-with-and-without-pre-existing-medical-conditions
#17
John Lippmann, David McD Taylor, Christopher Stevenson, Simon Mitchell
INTRODUCTION: This report examines Diver Alert Network Asia-Pacific (DAN AP) members with and without cardiac or respiratory conditions, diabetes or hypertension and compares their demographics, health and diving activities. METHODOLOGY: Two online cross-sectional surveys of DAN AP members were conducted. The first sought information from 833 divers who applied for membership between July 2009 and August 2013 and who had declared the targeted medical conditions...
December 2016: Diving and Hyperbaric Medicine: the Journal of the South Pacific Underwater Medicine Society
https://www.readbyqxmd.com/read/27965591/pre-dive-whole-body-vibration-better-reduces-decompression-induced-vascular-gas-emboli-than-oxygenation-or-a-combination-of-both
#18
Costantino Balestra, Sigrid Theunissen, Virginie Papadopoulou, Cedric Le Mener, Peter Germonpré, François Guerrero, Pierre Lafère
Purpose: Since non-provocative dive profiles are no guarantor of protection against decompression sickness, novel means including pre-dive "preconditioning" interventions, are proposed for its prevention. This study investigated and compared the effect of pre-dive oxygenation, pre-dive whole body vibration or a combination of both on post-dive bubble formation. Methods: Six healthy volunteers performed 6 no-decompression dives each, to a depth of 33 mfw for 20 min (3 control dives without preconditioning and 1 of each preconditioning protocol) with a minimum interval of 1 week between each dive...
2016: Frontiers in Physiology
https://www.readbyqxmd.com/read/27959907/assessing-caribbean-shallow-and-mesophotic-reef-fish-communities-using-baited-remote-underwater-video-bruv-and-diver-operated-video-dov-survey-techniques
#19
Dominic A Andradi-Brown, Consuelo Macaya-Solis, Dan A Exton, Erika Gress, Georgina Wright, Alex D Rogers
Fish surveys form the backbone of reef monitoring and management initiatives throughout the tropics, and understanding patterns in biases between techniques is crucial if outputs are to address key objectives optimally. Often biases are not consistent across natural environmental gradients such as depth, leading to uncertainty in interpretation of results. Recently there has been much interest in mesophotic reefs (reefs from 30-150 m depth) as refuge habitats from fishing pressure, leading to many comparisons of reef fish communities over depth gradients...
2016: PloS One
https://www.readbyqxmd.com/read/27955947/recent-equine-scientific-publications-of-interest-just-in-case-you-missed-them
#20
EDITORIAL
Thomas J Divers
No abstract text is available yet for this article.
December 9, 2016: Veterinary Clinics of North America. Equine Practice
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