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Gas decompression

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https://www.readbyqxmd.com/read/29762333/hemodynamic-shock-caused-by-tension-pneumoperitoneum-in-a-5-year-old-girl
#1
Marie-Sophie Zentar, Laureline Berteloot, Naziha Khen Dunlop, Olivier Bustarret, Bénédicte Pigneur, Gérard Cheron, François Angoulvant
Tension pneumoperitoneum is a relatively rare occurrence in the pediatric population. However, tension pneumoperitoneum is associated with significant morbidity and mortality if it is not promptly diagnosed and treated. A 5-year-old girl was admitted to emergency department with abdominal pain. She was in shock, and the radiograph film of the abdomen revealed a voluminous tension pneumoperitoneum. Aggressive fluid challenges were performed in intensive care followed by urgent laparotomy. Primary abdominal compartment due to trapped gas caused a decreased venous return and visceral perfusion...
May 14, 2018: Pediatric Emergency Care
https://www.readbyqxmd.com/read/29749331/colonoscopic-decompression-of-childhood-sigmoid-and-cecal-volvulus
#2
Iraj Shahramian, Ali Bazil, Danial Ebadati, Karim Rostami, Mojtaba Delaramnasab
Cases of colonic volvulus in children are infrequently described in the literature. Here we describe the case of three patients with colonic volvulus. The first patient was a 10-year-old girl with abdominal dilation and pain and no bowel movement for 48 h. Her abdominal X-ray showed the coffee bean sign adjacent to the diaphragm, which was compatible with a diagnosis of cecal volvulus. The second patient was a 4-year-old boy with a history of chronic constipation during the past year and with no bowel movement for 24 h...
March 2018: Turkish Journal of Gastroenterology: the Official Journal of Turkish Society of Gastroenterology
https://www.readbyqxmd.com/read/29746600/impact-of-positive-end-expiratory-pressure-on-cerebral-hemodynamic-in-paediatric-patients-with-post-traumatic-brain-swelling-treated-by-surgical-decompression
#3
Silvia De Rosa, Gianluca Villa, Paola Franchi, Aldo Mancino, Federica Tosi, Marina Alessandra Martin, Simona Bazzano, Giorgio Conti, Silvia Maria Pulitanò
INTRODUCTION: The objective of our present study is to evaluate the impact of different PEEP levels on cerebral hemodynamic, gas exchanges and respiratory system mechanics in paediatric patients with post-traumatic brain swelling treated with decompressive craniectomy (DC). MATERIALS AND METHODS: A prospective physiologic study was carried out on 14 paediatric patients presenting with severe traumatic brain swelling treated with DC. Transcranial Doppler ultrasonography was performed on the middle cerebral artery bilaterally after DC...
2018: PloS One
https://www.readbyqxmd.com/read/29695441/pulmonary-ventilation-perfusion-mismatch-a-novel-hypothesis-for-how-diving-vertebrates-may-avoid-the-bends
#4
REVIEW
Daniel Garcia Párraga, Michael Moore, Andreas Fahlman
Hydrostatic lung compression in diving marine mammals, with collapsing alveoli blocking gas exchange at depth, has been the main theoretical basis for limiting N2 uptake and avoiding gas emboli (GE) as they ascend. However, studies of beached and bycaught cetaceans and sea turtles imply that air-breathing marine vertebrates may, under unusual circumstances, develop GE that result in decompression sickness (DCS) symptoms. Theoretical modelling of tissue and blood gas dynamics of breath-hold divers suggests that changes in perfusion and blood flow distribution may also play a significant role...
April 25, 2018: Proceedings. Biological Sciences
https://www.readbyqxmd.com/read/29687909/breath-hold-diving
#5
John R Fitz-Clarke
Breath-hold diving is practiced by recreational divers, seafood divers, military divers, and competitive athletes. It involves highly integrated physiology and extreme responses. This article reviews human breath-hold diving physiology beginning with an historical overview followed by a summary of foundational research and a survey of some contemporary issues. Immersion and cardiovascular adjustments promote a blood shift into the heart and chest vasculature. Autonomic responses include diving bradycardia, peripheral vasoconstriction, and splenic contraction, which help conserve oxygen...
March 25, 2018: Comprehensive Physiology
https://www.readbyqxmd.com/read/29658485/hyperbaric-oxygen-therapy-its-use-in-medical-emergencies-and-its-development-in-hong-kong
#6
J Ks Leung, R Pk Lam
Hyperbaric oxygen therapy is widely accepted as life-saving treatment for decompression illness. Yet its use in acute carbon monoxide poisoning has remained controversial because of inconsistent findings in clinical trials. Hyperbaric oxygen therapy has an adjunctive role in managing gas gangrene, necrotising soft-tissue infection, and crush injury, as supported by case series. Several cases have been reported in the literature detailing the use of hyperbaric oxygen therapy in patients with severe anaemia in whom blood transfusion is not possible...
April 2018: Hong Kong Medical Journal, Xianggang Yi Xue za Zhi
https://www.readbyqxmd.com/read/29616324/variability-in-circulating-gas-emboli-after-a-same-scuba-diving-exposure
#7
V Papadopoulou, P Germonpré, D Cosgrove, R J Eckersley, P A Dayton, G Obeid, A Boutros, M-X Tang, S Theunissen, C Balestra
PURPOSE: A reduction in ambient pressure or decompression from scuba diving can result in ultrasound-detectable venous gas emboli (VGE). These environmental exposures carry a risk of decompression sickness (DCS) which is mitigated by adherence to decompression schedules; however, bubbles are routinely observed for dives well within these limits and significant inter-personal variability in DCS risk exists. Here, we assess the variability and evolution of VGE for 2 h post-dive using echocardiography, following a standardized pool dive in calm warm conditions...
April 3, 2018: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/29599384/pneumatosis-intestinalis-in-a-preterm-infant-should-we-treat-all-intestinal-pneumatosis-as-necrotising-enterocolitis
#8
Siu Jun Chew, Rajadurai Samuel Victor, Krishna Revanna Gopagondanahalli, Suresh Chandran
Gastric pneumatosisis a very rare site of pneumatosis intestinalis (PI), and we report this finding in a preterm female infant with cyanotic congenital heart disease. The infant was stable initially on nasal intermittent mandatory ventilation; however, torrential pulmonary flow through a large patent ductus arteriosus prompted closure using oral ibuprofen. After an episode of haematochezia, she developed PI, affecting mainly the gastric wall and small intestine with portal venous gas. Her bowel movements were regular, with no abdominal distension or significant gastric aspirates...
March 28, 2018: BMJ Case Reports
https://www.readbyqxmd.com/read/29571231/a-case-control-questionnaire-survey-of-decompression-sickness-risk-in-okinawa-divers
#9
Naoko Suzuki, Kazuyoshi Yagishita, Mitsuhiro Enomoto, Yasushi Kojima, Takuya Oyaizu, Masaharu Shibayama, Kazuo Yamamoto
Background: Decompression sickness (DCS) is a rare condition that is often difficult to diagnose in deep-sea divers. Because of this, prevention and early diagnosis are important. In this case-control study, we examined the risk and preventive factors associated with DCS. Methods: Our original questionnaire survey was conducted among 269 recreational divers in Okinawa. Divers who were diagnosed with DCS by a physician (n = 94) were compared with healthy recreational divers (n = 175)...
January 2018: Undersea & Hyperbaric Medicine: Journal of the Undersea and Hyperbaric Medical Society, Inc
https://www.readbyqxmd.com/read/29545754/angiotensin-converting-enzyme-inhibitor-has-a-protective-effect-on-decompression-sickness-in-rats
#10
Aleksandra Mazur, Anthony Guernec, Jacky Lautridou, Julie Dupas, Emmanuel Dugrenot, Marc Belhomme, Michael Theron, François Guerrero
Introduction: Commercial divers, high altitude pilots, and astronauts are exposed to some inherent risk of decompression sickness (DCS), though the mechanisms that trigger are still unclear. It has been previously showed that diving may induce increased levels of serum angiotensin converting enzyme. The renin angiotensin aldosterone system (RAAS) is one of the most important regulators of blood pressure and fluid volume. The purpose of the present study was to control the influence of angiotensin II on the appearance of DCS...
2018: Frontiers in Physiology
https://www.readbyqxmd.com/read/29535634/effect-of-shallow-and-deep-scuba-dives-on-heart-rate-variability
#11
Yeonsik Noh, Hugo F Posada-Quintero, Yan Bai, Joseph White, John P Florian, Peter R Brink, Ki H Chon
Prolonged and high pressure diving may lead to various physiological changes including significant alterations of autonomic nervous system (ANS) activity that may be associated with altered physical performance, decompression sickness, or central nervous system oxygen toxicity. Ideally, researchers could elucidate ANS function before, during, and after dives that are most associated with altered function and adverse outcomes. However, we have a limited understanding of the activities of the ANS especially during deeper prolonged SCUBA diving because there has never been a convenient way to collect physiological data during deep dives...
2018: Frontiers in Physiology
https://www.readbyqxmd.com/read/29503252/scuba-diving-in-pregnancy
#12
REVIEW
Robert L Reid, Melissa Lorenzo
OBJECTIVE: Obstetrical care providers may occasionally encounter women with questions about the safety of Self-Contained Underwater Breathing Apparatus (SCUBA) diving in pregnancy. This article provides an overview of safety issues associated with basic SCUBA diving and offers guidance to practitioners about how to evaluate and counsel pregnant women about the associated maternal and fetal risks. Basic diving physiology is reviewed and the implications of SCUBA diving during pregnancy are discussed...
March 1, 2018: Journal of Obstetrics and Gynaecology Canada: JOGC, Journal D'obstétrique et Gynécologie du Canada: JOGC
https://www.readbyqxmd.com/read/29491309/portal-venous-gas-due-to-decompression-sickness
#13
Akihiko Kondo, Hiroki Nagawasa, Ikuto Takeuchi, Youichi Yanagawa
No abstract text is available yet for this article.
February 28, 2018: Internal Medicine
https://www.readbyqxmd.com/read/29460254/diagnosis-of-arterial-gas-embolism-in-scuba-diving-modification-suggestion-of-autopsy-techniques-and-experience-in-eight-cases
#14
Josep M Casadesús, Fernando Aguirre, Ana Carrera, Pere Boadas-Vaello, Maria T Serrando, Francisco Reina
The purpose of this study was to suggest modifications of autopsy techniques in order to improve post-mortem diagnosis of arterial gas embolism (AGE) based on multidisciplinary investigation of SCUBA diving fatalities. Five adult human cadavers from the voluntary donation program of the Human Anatomy Laboratory, and eight judicial autopsied bodies of SCUBA divers from the Forensic Pathology Service were assessed. Before performing any autopsies, we accessed the diving plan and the divers' profiles for each case...
March 2018: Forensic Science, Medicine, and Pathology
https://www.readbyqxmd.com/read/29450472/otorhinolaryngology-and-diving-part-1-otorhinolaryngological-hazards-related-to-compressed-gas-scuba-diving-a-review
#15
Matt Lechner, Liam Sutton, Jonathan M Fishman, David M Kaylie, Richard E Moon, Liam Masterson, Christoph Klingmann, Martin A Birchall, Valerie J Lund, John S Rubin
Importance: Scuba diving is becoming increasingly popular. However, scuba diving is associated with specific risks; 80% of adults and 85% of juvenile divers (aged 6-17 years) have been reputed to have an ear, nose, or throat complaint related to diving at some point during their diving career. Divers frequently seek advice from primary care physicians, diving physicians, and otorhinolaryngologists, not only in the acute setting, but also related to the long-term effects of diving. Observations: The principles underpinning diving-related injuries that may present to the otorhinolaryngologist rely on gas volume and gas saturation laws, and the prevention of these injuries requires both that the diver is skilled and that their anatomy allows for pressure equalization between the various anatomical compartments...
March 1, 2018: JAMA Otolaryngology—Head & Neck Surgery
https://www.readbyqxmd.com/read/29413991/gas-embolism-as-a-potential-cause-of-death-by-helium-poisoning-postmortem-computed-tomography-changes-in-two-cases-of-suicidal-helium-inhalation
#16
Aleksandra Borowska-Solonynko, Agnieszka Dąbkowska
Evaluation of two suicidal helium inhalation cases is presented, comprising both conventional autopsy methods and postmortem computed tomography. Conventional postmortem examinations reveal no characteristic changes. Modern diagnostic techniques enabled to disclosethe presence of a very large amount of accumulated gas in all examined areas, including veins and arteries of the head, torso, lower extremities, heart chambers, and between muscle fibers in both cases. The changes due to possible putrefaction were taken into consideration - radiological alteration index was calculated...
March 2018: Legal Medicine
https://www.readbyqxmd.com/read/29402359/-predictive-value-of-partial-pressure-of-end-tidal-carbon-dioxide-on-the-effect-of-active-abdominal-compression-decompression-cardiopulmonary-resuscitation-and-serum-s100b-protein-on-cerebral-function
#17
Hongwei Wang, Xin Sha, Sisen Zhang, Xianfa Jiao, Longxian Zhao, Yingxin Cen, Wei Song, Jing Li, Lixiang Wang
OBJECTIVE: To explore the predictive value of partial pressure of end-tidal carbon dioxide (PET CO2 ) on the effect of active abdominal compression-decompression cardiopulmonary resuscitation (AACD-CPR) and serum S100B protein on cerebral function. METHODS: 142 adult patients with in-hospital cardiac arrest (IHCA) AACD-CPR in Zhengzhou People's Hospital, Affiliated Southern Medical University from September 2014 to December 2017 were enrolled. Patients were divided into successful group and failure group according to restoration of spontaneous circulation (ROSC) or not; and then according to Glasgow-Pittsburgh cerebral performance categories (CPC) one month after ROSC, the successful group was divided into good prognosis group (CPC 1-2) and poor prognosis group (CPC 3-5) further...
February 2018: Zhonghua Wei Zhong Bing Ji Jiu Yi Xue
https://www.readbyqxmd.com/read/29384906/a-rare-case-report-of-multiple-myeloma-presenting-with-paralytic-ileus-and-type-ii-respiratory-failure-due-to-hypercalcemic-crisis
#18
Yuchen Guo, Liang He, Yiming Liu, Xueyuan Cao
RATIONALE: Paralytic ileus is characterized by the signs and symptoms of intestinal obstruction but without any mechanical lesions in the intestinal lumen. Several medical and surgical conditions can lead to this ailment, such as electrolyte disturbances that impair intestinal motility. However, hypercalcemia secondary to multiple myeloma as a major cause of paralytic ileus has rarely been reported. PATIENT CONCERNS: The patient got severe constipation with difficulty in the passage of both gas and feces for 7 days...
December 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29384478/discrimination-between-bycatch-and-other-causes-of-cetacean-and-pinniped-stranding
#19
Yara Bernaldo de Quirós, Meghan Hartwick, David S Rotstein, Michael M Garner, Andrea Bogomolni, William Greer, Misty E Niemeyer, Greg Early, Frederick Wenzel, Michael Moore
The challenge of identifying cause of death in discarded bycaught marine mammals stems from a combination of the non-specific nature of the lesions of drowning, the complex physiologic adaptations unique to breath-holding marine mammals, lack of case histories, and the diverse nature of fishing gear. While no pathognomonic lesions are recognized, signs of acute external entanglement, bulging or reddened eyes, recently ingested gastric contents, pulmonary changes, and decompression-associated gas bubbles have been identified in the condition of peracute underwater entrapment (PUE) syndrome in previous studies of marine mammals...
January 31, 2018: Diseases of Aquatic Organisms
https://www.readbyqxmd.com/read/29340152/impact-of-gas-emboli-and-hyperbaric-treatment-on-respiratory-function-of-loggerhead-sea-turtles-caretta-caretta
#20
Cyril Portugues, Jose Luis Crespo-Picazo, Daniel García-Párraga, Jordi Altimiras, Teresa Lorenzo, Alicia Borque-Espinosa, Andreas Fahlman
Fisheries interactions are the most serious threats for sea turtle populations. Despite the existence of some rescue centres providing post-traumatic care and rehabilitation, adequate treatment is hampered by the lack of understanding of the problems incurred while turtles remain entrapped in fishing gears. Recently it was shown that bycaught loggerhead sea turtles ( Caretta caretta ) could experience formation of gas emboli (GE) and develop decompression sickness (DCS) after trawl and gillnet interaction. This condition could be reversed by hyperbaric O2 treatment (HBOT)...
2018: Conservation Physiology
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