Aviation heart

The primary psychoactive component of cannabis, Δ9 -tetrahydrocannabinol (THC) impairs cognitive function and psychomotor performance, particularly for complex tasks like piloting an aircraft. The Federal Aviation Administration's (FAA) Forensic Sciences Section at the Civil Aerospace Medical Institute (Oklahoma City, OK) performs toxicological analyses on pilots fatally injured in general aviation incidents, permitting cannabinoids measurement in a broad array of postmortem biological specimens. Cannabinoid concentrations in postmortem fluids and tissues from 10 pilots involved in airplane crashes are presented...

OBJECTIVE: To summarize critical cases of emergency helicopter transferring between hospitals and improve the quality and safety of critical care. METHODS: The task records of Guangxi Aviation Medical Rescue Training Base from September 2017 to September 2020 were retrieved. The mission acceptance, implementation results, disease spectrum composition, pre-transfer preparation and medical intervention on board were summarized. RESULTS: (1) General information: a total of 168 patients of helicopter transfer requests were registered, of which 36 patients were transferred, 35 patients were successful, 1 patient had cardiac arrest during the landing phase, and died several hours after continuous resuscitation...

PURPOSE: We explore the potential use of radar technology for fiducial marker tracking for monitoring of respiratory tumor motion during radiotherapy. Historically microwave radar technology has been widely deployed in various military and civil aviation applications to provide detection, position and tracking of single or multiples objects from far away and even through barriers. Recently, due to many advantages of the microwave technology, it has been successfully demonstrated to detect breast tumor, and to monitor vital signs in real-time such as breathing signals or heart rates...

Exposure to acute transition from negative (-Gz) to positive (+ Gz) gravity significantly impairs cerebral perfusion in pilots of high-performance aircraft during push-pull maneuver. This push-pull effect may raise the risk for loss of vision or consciousness. The aim of the present study was to explore effective countermeasures against cerebral hypoperfusion induced by the push-pull effect. Twenty healthy young volunteers (male, 21 ± 1 year old) were tested during the simulated push-pull maneuver by tilting...

Exposure to reduced levels of breathable oxygen is known to cause a number of deleterious effects on human performance. Previous work has demonstrated that in healthy adults, hypoxia results in decrements on a wide range of sensory, cognitive, and motor tasks. However, very little is known about the time course of recovery of cognitive functions following a hypoxic exposure. While previous studies have shown that physiological responses like heart rate and oxygen saturation rebound almost immediately, one previous study has shown a delayed recovery for response time (RT) measures following hypoxia...

The electrification of heavy-duty transport and aviation will require new strategies to increase the energy density of electrode materials1,2 . The use of anionic redox represents one possible approach to meeting this ambitious target. However, questions remain regarding the validity of the O2- /O- oxygen redox paradigm, and alternative explanations for the origin of the anionic capacity have been proposed3 , because the electronic orbitals associated with redox reactions cannot be measured by standard experiments...

BACKGROUND: Children with severe congenital heart disease (CHD) are rarely treated in developing countries and have very little to no chance to survive in their local environment. Mécénat Chirurgie Cardiaque (MCC) flies to France children with CHD from developing countries. This report focuses on the early, mid, and late outcomes of 531 children with severe CHD sent to MCC for surgery from 1996 to 2019. METHODS: The inclusion criteria were based on diagnosis and not on procedure...

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The present research was aimed at investigating in a simulation experiment whether the initiation of a hostile project in an environment akin to airport security checkpoints would translate in variation of cardiac activity. Twenty-three participants (eight women) enrolled as mock passengers had to make several traverses of a security checkpoint while carrying luggage containing either a neutral or a falsely dangerous item. The traverses with the falsely dangerous item were associated with an elevation of heart rate and higher drops of heart rate variability than the traverses with the neutral item...

BACKGROUND: Airplane de-icing technicians work from either an open-basket or closed-basket. OBJECTIVE: The objective of this study is to identify the tasks that have an influence on the physical fatigue of open-basket aircraft de-icing technicians. METHODS: In a Canadian airport during the winter of 2016-2017, a field study was conducted in which the heart rate of 12 volunteer participants was collected. The data was analyzed along with the 22 tasks that make up the activity of open-basket aircraft de-icing...

INTRODUCTION: China has the largest number of patients with coronary heart disease (CHD) in the world. Numerous pharmacological strategies are available for CHD in routine clinical practice. CHD-induced angina pectoris affects patients' quality of life and is a key predictor of prognosis. This study will compare the effectiveness of different antiangina treatments, particularly ATP-sensitive potassium channel (KATP ) activators, in the Central China District. This proposal underpins the first comparison of antiangina therapies in patients with CHD in China using a multicentre, retrospective, hospital system-based assessment...

The accelerated growth of commercial flights has resulted in a huge upswing of air travelers over the last few decades, including passengers with a wide range of cardiovascular conditions. Notwithstanding the ongoing COVID-19 pandemic that has set back the aviation industry for the next 1-2 years, air travel is expected to rebound fully by 2024. Guidelines and evidence-based recommendations for safe air travel in this group vary, and physicians often encounter situations where opinions and assessments on fitness for flights are sought...

The exponential growth of commercial flights has resulted in an explosion of air travelers over the last few decades, including passengers with a wide range of cardiovascular conditions. Notwithstanding the ongoing COVID-19 pandemic that had set back the aviation industry for the next 1-2 years, air travel is expected to rebound fully by 2024. Guidelines and evidence-based recommendations for safe air travel in this group vary, and physicians often encounter situations where opinions and assessments on fitness for flights are sought...

OBJECTIVE: To understand human factors (HF) contributing to disturbances during invasive cardiac procedures, including frequency and nature of distractions, and assessment of operator workload. METHODS: Single centre prospective observational evaluation of 194 cardiac procedures in three adult cardiac catheterisation laboratories over 6 weeks. A proforma including frequency, nature, magnitude and level of procedural risk at the time of each distraction/interruption was completed for each case...

INTRODUCTION: Cardiovascular disease (CVD) is the leading cause of death in western industrial countries and one of the most frequent causes of sudden incapacitation in flight for pilots. There are limited data available on cardiovascular risk profiles of pilots, and especially military pilots. The aim of this study was to assess the prevalence of cardiovascular risk factors (CVRF) in German military pilots. METHODS: The changing prevalence of CVRF in active military pilots was studied using a cross-sectional survey during two distinct periods, 2007-2009 and 2016-2018...

The Joint Casualty and Compassionate Centre Commemorations team (JCCC), part of the British Ministry of Defence, is responsible for managing the identification of human remains from British casualties who fell during WWI and WWII primarily. With this task in mind, the work to identify and rebury the historic battle casualties is at the heart of this team's work. In addition, the team also considers new evidence regarding possible identification of an individual buried as "unknown" and they administer the Protection of Military Remains Act 1986...

BACKGROUND: From 2007, the Federal Aviation Administration (FAA) permitted pilots who have had a heart transplant to be considered for recertification under special issuance at the third-class level. The objective of this study was to evaluate certification safety and determine if any adverse outcome occurred in this airman group as a consequence of this policy. METHODS: Methods involved collecting data from the FAA Document Imaging Workflow System to identify airmen undergoing cardiac transplantation since 2007, and examining medical and safety-related outcomes through the National Transportation Safety Board-related accident database and the Centers for Disease Control and Prevention National Death Index...

OBJECTIVES: The authors formulated a hypothesis that, on completion of the training program by cadets, their vestibular habituation would increase, measured by the time of the duration of the test on the unlocked looping, in contrast to the initial values and the control group. MATERIAL AND METHODS: The research involved 35 male cadets, first-year students of the Polish Air Force Academy in Dęblin. The examined persons were on average 20 years of age. They were divided into 2 groups...

The application of physiologically based modeling approaches in evaluating health risks in diverse environments is limited by scarcity of comprehensive reviews detailing how physiological parameters are altered due to stressors. A modern high-performance aviation environment in particular has the potential for simultaneous exposure to chemical and non-chemical stressors which may interact via non-chemical stressor-mediated pharmacokinetic alterations. To support physiologically based pharmacokinetic (PBPK) modeling of in-flight disposition inhaled chemicals, literature review, and synthesis was conducted to determine the impact of gravitational (+Gz) forces on PBPK modeling inputs...

INTRODUCTION: Paragliding is an emerging discipline of aviation, with recreational pilots flying distances over 100 km. It remains risky. Accidents typically relate to pilot error rather than equipment failure. We measured cognition and physiological responses during simulated flight, to investigate whether errors might be due to pilot impairment, rather than misjudgment. METHODS: There were 10 male paraglider pilots (aged 19-58 yr) who undertook a simulated flight in an environmental chamber from sea level (0...