António Brandão, Carla Gonçalves, Susana Rafaela Martins, Artur Caldas, Oliver Reisten, Iñigo Soteras
{"title":"Canyoning Incidents and Accidents: Causes and Injury Patterns.","authors":"António Brandão, Carla Gonçalves, Susana Rafaela Martins, Artur Caldas, Oliver Reisten, Iñigo Soteras","doi":"10.1177/10806032251355494","DOIUrl":"https://doi.org/10.1177/10806032251355494","url":null,"abstract":"<p><p>ObjectiveThe aim of this convenience sampling study was to analyze incidents and accidents occurring in the context of canyoning so as to understand their causes, resulting injuries, and severity.MethodsThe sample consisted of 179 individuals (104 males, 75 females, age 35±9 y) who experienced an incident or accident while practicing canyoning and voluntarily participated in this convenience sampling study. The methods employed included the collection of information regarding incidents and accidents reported by canyoning practitioners. The most frequently associated activities for these events were identified as well as the body parts most affected by injuries. Additionally, an examination of the causes that posed a higher risk of accidents and injuries was conducted.ResultsOur results revealed that 21% of participants were beginners, among whom 23% were involved in accidents and 16% in incidents. In contrast, 79% of participants were experienced, with 84% involved in incidents and 78% in accidents. Additionally, 32% of accidents occurred during jumping progression, and 28% occurred while walking. Rope progression was the third most frequently associated activity with accidents, accounting for 24% of cases. Regarding incidents, rope progression was the most common activity, representing 49%, followed by water progression at 22%. Lower limb injuries were the most prevalent, particularly 25% affecting the tibia/fibula and 24% the ankles.ConclusionsThe main causes of accidents were jumping and walking progression, with rope progression being the most common in incidents. Lower limb injuries, especially to the tibia, fibula, and ankle, were most frequent. There is a need to increase awareness among canyoning practitioners about the risks of these activities.</p>","PeriodicalId":49360,"journal":{"name":"Wilderness & Environmental Medicine","volume":" ","pages":"10806032251355494"},"PeriodicalIF":1.4,"publicationDate":"2025-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144700204","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Descriptive Characteristics of Drowning-Related Out-of-Hospital Cardiac Arrest in Marine Leisure Activities on a Japanese Island.","authors":"Akimi Tsuruta, Yutaka Igarashi, Kenta Tsuruta, Shigeto Takeshima, Shoji Yokobori","doi":"10.1177/10806032251359644","DOIUrl":"https://doi.org/10.1177/10806032251359644","url":null,"abstract":"<p><p>IntroductionDrowning is a global public health concern, with over 300,000 deaths annually. In Japan, approximately 700 drowning-related fatalities occur each year, increasingly involving older adults during marine leisure activities. However, limited data are available on the clinical characteristics of such incidents at tourist destinations. This study describes the characteristics and outcomes of drowning-related out-of-hospital cardiac arrest (OHCA) cases on a remote tourist island in Japan.MethodsThis retrospective, single-center descriptive case series reviewed OHCA cases due to drowning at Yaeyama Hospital between June 2021 and December 2023. Patient demographics, incident details, and outcomes were collected. Key variables included age, type of activities, bystander cardiopulmonary resuscitation (CPR), instructor presence, time to hospital arrival, and neurological outcomes based on the Cerebral Performance Category (CPC) scale.ResultsAmong 31 OHCA cases, 90% (28 cases) involved tourists. The median age was 50 years, with most incidents related to snorkeling (10 cases) or scuba diving (9 cases). Bystander CPR was performed in 14 cases; 7 patients achieved return of spontaneous circulation. Instructors were present in 9 adult cases; however, whether they performed CPR could not be confirmed. At discharge, one adult had a CPC score of 1, and one had CPC 4. All 5 pediatric patients had CPC 1. The mean time from incident recognition to hospital arrival was 52 min.ConclusionThis case series highlights demographic and situational patterns in drowning-related OHCA during marine activities. Further research is needed to identify risk factors and improve prevention strategies in resource-limited island settings.</p>","PeriodicalId":49360,"journal":{"name":"Wilderness & Environmental Medicine","volume":" ","pages":"10806032251359644"},"PeriodicalIF":1.4,"publicationDate":"2025-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144692141","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Robert J Rolfe, Sofia Zavala, Elizabeth R Blackwood, Regina C LaRocque, Edward T Ryan
{"title":"Mosquito-Borne Infections in International Travelers.","authors":"Robert J Rolfe, Sofia Zavala, Elizabeth R Blackwood, Regina C LaRocque, Edward T Ryan","doi":"10.1177/10806032251356485","DOIUrl":"https://doi.org/10.1177/10806032251356485","url":null,"abstract":"<p><p>Mosquito-borne infections are a common cause of illness among returning travelers. Frontline healthcare providers should maintain a high degree of suspicion for these infections when evaluating ill returning travelers. This narrative review provides an overview of the most common mosquito-borne infections in travelers. We conducted a search of the medical literature for updates in the past 5 y. We reviewed resources of the US Centers for Disease Control (Yellow Book, Advisory Committee on Immunization Practices), and US Food and Drug Administration. Arboviral infections and malaria are the most frequently diagnosed mosquito-borne infections in returning travelers. Among the mosquito-borne arboviral infections, chikungunya, yellow fever, and Japanese encephalitis are all vaccine preventable. Dengue fever, although the most common arboviral infection worldwide, does not yet have a vaccine approved for use in US travelers. The incidence of Zika virus infection has decreased substantially in recent years, including a reduced frequency of infections reported in travelers. The risk of mosquito-borne illnesses can be reduced by behavioral changes and use of insect repellent, screens, netting, and insecticide-impregnated clothing. Malaria can be further prevented through the appropriate use of chemoprophylaxis.</p>","PeriodicalId":49360,"journal":{"name":"Wilderness & Environmental Medicine","volume":" ","pages":"10806032251356485"},"PeriodicalIF":1.4,"publicationDate":"2025-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144676332","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Restructuring Riley's Historic 3-Compartment Lung Model for Evaluation of Pulmonary Gas Exchange.","authors":"Jack A Loeppky, Marcos F Vidal Melo","doi":"10.1177/10806032251350582","DOIUrl":"https://doi.org/10.1177/10806032251350582","url":null,"abstract":"<p><p>In 1951, Riley's classic 3-compartment model of gas exchange estimated pulmonary shunt, alveolar dead space, and an effective compartment representing the functioning lung. But trial-and-error steps and conversion charts made its application impractical. We implemented estimates of alveolar and effective PCO<sub>2</sub> to simplify computations, making it useful when more advanced technologies are unavailable. Using stepwise computations, we studied 10 healthy individuals and 43 outpatients with mild to severe chronic obstructive pulmonary disease and, in another study, 32 healthy subjects during 12 h of hypobaric hypoxia at 426 mm Hg (ALT). The \"effective\" PaCO<sub>2</sub> due to pulmonary shunt and Haldane effect when breathing increased O<sub>2</sub> was calculated via the CO<sub>2</sub> dissociation curve. The model was applied while breathing air and 25% O<sub>2</sub> to simulate sea level in outpatients at 1620 m. Pulmonary shunt rose significantly with increasing hypoxemia (<i>P</i><0.001), whereas alveolar dead space remained high. Breathing 25% O<sub>2</sub> reduced the shunt (<i>P</i><0.001) by elevating systemic PO<sub>2</sub>. The effective compartment in healthy subjects was 0.87, but only 0.41 in patients with severe hypoxemia, increasing to 0.45 on 25% O<sub>2</sub> (<i>P</i>=0.031). In ALT, a scoring system demonstrated that 16 subjects experienced acute mountain sickness (AMS) after 1 h with a significant increase in pulmonary shunt compared with 16 subjects without AMS. The model shows that hypoxemia in patients is associated with perfusion redistribution from high to low V/Q regions, consistent with reports using more sophisticated techniques. Subjects susceptible to AMS also increased shunt, suggesting autonomic instability.</p>","PeriodicalId":49360,"journal":{"name":"Wilderness & Environmental Medicine","volume":" ","pages":"10806032251350582"},"PeriodicalIF":1.4,"publicationDate":"2025-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144660825","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Epidemiology of Electronic Mountain Biking Injuries: An Unexplored Emerging Extreme Sport.","authors":"Gemma Ruddick, Larissa Trease, Sue Pearson","doi":"10.1177/10806032251356489","DOIUrl":"https://doi.org/10.1177/10806032251356489","url":null,"abstract":"<p><p>IntroductionMountain biking is a fast-growing recreational activity. Electronic mountain bikes (EMTBs) are becoming more common and can attract a different demographic to traditional mountain bikes. The difference in bike design could lead to a differing injury profile. This study examined acute EMTB injuries, an unstudied area.MethodsA voluntary online survey collected data on EMTB injuries sustained by riders in the Australian Capital Territory and New South Wales. Descriptive statistics were used to analyze injury events.ResultsOver the study period (November 2022-June 2023) 67 injuries were recorded across 46 injury events. The median age of participants was 49 y (range, 20-67 y), and respondents were predominantly male (males 63%, females 35%, other 2%). Common injuries were superficial skin injuries (42%), mainly to the limbs. The study recorded 7 fractures to the limbs and 7 to the head and trunk. Most injuries were sustained from collisions or obstacles (49%). Most occurred traveling downhill (63%) on blue graded single tracks (65%), and 22% injuries occurred whilst traveling uphill. Injury management were spread across self-managed (44%), Emergency Department care (31%) and other health providers (26%). In the 7-d period following the injury 59% of riders experienced moderate to severe pain, and 50% were unable to participate in MTB riding.ConclusionElectronic mountain biking participants have a similar injury profile to traditional mountain bikers, but their demographics may differ. More research is needed to determine whether there is increased representation of female and older riders in electronic mountain biking.</p>","PeriodicalId":49360,"journal":{"name":"Wilderness & Environmental Medicine","volume":" ","pages":"10806032251356489"},"PeriodicalIF":1.4,"publicationDate":"2025-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144585408","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"West Ridge Forerunner: Thomas F. Hornbein and the Development of the Maytag Oxygen Mask for the 1963 American Mount Everest Expedition.","authors":"George W Rodway, Robert B Schoene","doi":"10.1177/10806032251351587","DOIUrl":"https://doi.org/10.1177/10806032251351587","url":null,"abstract":"<p><p>Those with an interest in the history of mountaineering are aware of the visionary achievement of the first ascent of the West Ridge of Everest-and first traverse of the mountain-by Tom Hornbein and Willi Unsoeld during the 1963 American Mount Everest expedition led by Norman Dyrunfurth. In many respects, this climb defined Hornbein (1930-2023) in the eyes of the international mountaineering community. One aspect of his career in high altitude mountaineering that also reflected his professional interests has received scant attention. This largely overlooked contribution was that of the design and development, in the years and months leading up to the American expedition to Everest, of a more capable and comfortable mask for use with an open-circuit supplemental oxygen system. The primary intent of this paper was to relate the story of what came to be known as the Maytag mask, but the authors also provide a brief backdrop to Hornbein's life and times to give perspective to his endeavors in the valleys as well as on the peaks.</p>","PeriodicalId":49360,"journal":{"name":"Wilderness & Environmental Medicine","volume":" ","pages":"10806032251351587"},"PeriodicalIF":1.4,"publicationDate":"2025-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144530688","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Embarking in the Backcountry: Traumatic Injuries Sustained in the Boundary Waters Canoe Area.","authors":"Anna Marie Rauzi, Melissa Harry, Kristin Colling","doi":"10.1177/10806032251351842","DOIUrl":"10.1177/10806032251351842","url":null,"abstract":"<p><p>IntroductionThe Boundary Waters Canoe Area (BWCA) is a backcountry recreation area. This study aimed to characterize injuries sustained in the BWCA.MethodsA single reviewer completed a retrospective chart review of trauma admissions to Essentia Health from January 1, 2014 to February 25, 2023. Patients were included if their injury was documented to have occurred in the BWCA and they had not opted out of research.ResultsEighteen patients were found to have sustained injury in the BWCA. Most were adult males (78%), White (89%), and nonsmokers (94%). Most patients had no alcohol (83.3%) or drug (94.4%) use related to the injury. Seven patients self-extricated out to the BWCA, 6 were transported by ground Emergency Medical Services, and 5 required flight extrication. Median time from notification of injury to Emergency Medical Services arrival was 64 min. Time from notification of injury to hospital arrival was a median of 131 min. Falls were the main mechanism of injury (61%), followed by strike injury (22%) and water injury (17%). A few patients required lifesaving interventions (eg, prehospital intubations, needle thoracostomy, and blood transfusion). Twelve patients required a procedure (eg, <5 chest tubes and 10 surgeries). All 18 patients were alive at discharge.ConclusionThe most common injuries sustained in the BWCA were from falls, strikes, and water injuries. In collaboration with forest ranger stations, we plan to provide this information to backpackers to assist in their preparation for backcountry emergencies.</p>","PeriodicalId":49360,"journal":{"name":"Wilderness & Environmental Medicine","volume":" ","pages":"10806032251351842"},"PeriodicalIF":1.1,"publicationDate":"2025-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144530687","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Caitlin Roake, Charizza Grace Besmanos, Patil Armenian
{"title":"A Case of Accidental <i>Veratrum californicum</i> (California False Hellebore) Toxicity.","authors":"Caitlin Roake, Charizza Grace Besmanos, Patil Armenian","doi":"10.1177/10806032251348162","DOIUrl":"https://doi.org/10.1177/10806032251348162","url":null,"abstract":"<p><p>The <i>Veratrum</i> genus of plants contains multiple toxic alkaloid compounds, and ingestion of <i>Veratrum</i> species may result in clinically significant human illness. Although many cases of <i>Veratrum</i> ingestion have been reported in the Eastern United States and Europe, no case report of human toxicity from the most common California species, <i>Veratrum californicum,</i> exists in the literature. We report on the clinical course and treatment of a patient with a known <i>Veratrum californicum</i> ingestion. We discuss the identification of the <i>Veratrum</i> species and compare our case to other cases of <i>Veratrum</i> ingestions reported in the literature. We find that similar to ingestions of other <i>Veratrum</i> species, our patient became hypotensive and bradycardic, requiring fluid resuscitation. Similar to other reports, our patient responded to treatment with atropine and was able to safely discharge after a short hospital stay. Our case adds the first reported ingestion of <i>Veratrum californicum</i> to the literature of other <i>Veratrum</i> ingestions and suggests that this toxicity similarly responds to atropine and hemodynamic support.</p>","PeriodicalId":49360,"journal":{"name":"Wilderness & Environmental Medicine","volume":" ","pages":"10806032251348162"},"PeriodicalIF":1.4,"publicationDate":"2025-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144327512","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Shoulder Deformity as a Result of a Fall While Skiing.","authors":"Morteza Khodaee, Arshia Khodaee","doi":"10.1177/10806032251349736","DOIUrl":"https://doi.org/10.1177/10806032251349736","url":null,"abstract":"","PeriodicalId":49360,"journal":{"name":"Wilderness & Environmental Medicine","volume":" ","pages":"10806032251349736"},"PeriodicalIF":1.4,"publicationDate":"2025-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144327513","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}