Scurvy is a disease resulting from a lack of vitamin C. Early symptoms of deficiency include weakness, fatigue, and sore arms and legs. Without treatment, decreased red blood cells, gum disease, changes to hair, and bleeding from the skin may occur. As scurvy worsens, there can be poor wound healing, personality changes, and finally death from infection or bleeding.
Vitamins are organic molecules that are essential to an organism in small quantities for proper metabolic function. Essential nutrients cannot be synthesized in the organism in sufficient quantities for survival, and therefore must be obtained through the diet. For example, Vitamin C can be synthesized by some species but not by others; it is not considered a vitamin in the first instance but is in the second. Most vitamins are not single molecules, but groups of related molecules called vitamers. For example, there are eight vitamers of vitamin E: four tocopherols and four tocotrienols.
Emergency medical services (EMS), also known as ambulance services or paramedic services, are emergency services that provide urgent pre-hospital treatment and stabilisation for serious illness and injuries and transport to definitive care. They may also be known as a first aid squad, FAST squad, emergency squad, ambulance squad, ambulance corps, life squad or by other initialisms such as EMAS or EMARS.
Internal medicine, also known as general internal medicine in Commonwealth nations, is a medical specialty for medical doctors focused on the prevention, diagnosis, and treatment of internal diseases. Medical practitioners of internal medicine are referred to as internists, or physicians in Commonwealth nations. Internists possess specialized skills in managing patients with undifferentiated or multi-system disease processes. They provide care to both hospitalized (inpatient) and ambulatory (outpatient) patients and often contribute significantly to teaching and research. Internists are qualified physicians who have undergone postgraduate training in internal medicine, and should not be confused with "interns”, a term commonly used for a medical doctor who has obtained a medical degree but does not yet have a license to practice medicine unsupervised.
Battlefield medicine, also called field surgery and later combat casualty care, is the treatment of wounded combatants and non-combatants in or near an area of combat. Civilian medicine has been greatly advanced by procedures that were first developed to treat the wounds inflicted during combat. With the advent of advanced procedures and medical technology, even polytrauma can be survivable in modern wars. Battlefield medicine is a category of military medicine.
George Richards Minot was an American medical researcher who shared the 1934 Nobel Prize with George Hoyt Whipple and William P. Murphy for their pioneering work on pernicious anemia.
A medical error is a preventable adverse effect of care ("iatrogenesis"), whether or not it is evident or harmful to the patient. This might include an inaccurate or incomplete diagnosis or treatment of a disease, injury, syndrome, behavior, infection, or other ailment.
Sir Alexander Armstrong was an Irish naval surgeon, explorer, naturalist and author. After obtaining a medical degree he joined the Royal Navy and was stationed on board HMS Investigator, tasked with finding the lost expedition of explorer Sir John Franklin. Investigator was trapped in the ice at Mercy Bay in 1851 and Armstrong spent several winters in the Arctic before he returned to London.
A medical specialty is a branch of medical practice that is focused on a defined group of patients, diseases, skills, or philosophy. Examples include those branches of medicine that deal exclusively with children (paediatrics), cancer (oncology), laboratory medicine (pathology), or primary care. After completing medical school or other basic training, physicians or surgeons and other clinicians usually further their medical education in a specific specialty of medicine by completing a multiple-year residency to become a specialist.
An intensive care unit (ICU), also known as an intensive therapy unit or intensive treatment unit (ITU) or critical care unit (CCU), is a special department of a hospital or health care facility that provides intensive care medicine.
Alexander Hepburne Macklin was a British physician who served as one of the two surgeons on Sir Ernest Shackleton's Imperial Trans-Antarctic Expedition of 1914–1917. In 1921–1922, he joined the Shackleton–Rowett Expedition aboard the Quest. When Sir Ernest Shackleton advert came out in newspapers, the surgeon signed up as he had been on many ships as a surgeon. He was also a dog trainer on Shackleton’s expedition.
A heart transplant, or a cardiac transplant, is a surgical transplant procedure performed on patients with end-stage heart failure or severe coronary artery disease when other medical or surgical treatments have failed. As of 2018, the most common procedure is to take a functioning heart, with or without both lungs, from a recently deceased organ donor and implant it into the patient. The patient's own heart is either removed and replaced with the donor heart or, much less commonly, the recipient's diseased heart is left in place to support the donor heart.
Unnecessary health care is health care provided with a higher volume or cost than is appropriate. In the United States, where health care costs are the highest as a percentage of GDP, overuse was the predominant factor in its expense, accounting for about a third of its health care spending in 2012.
Wilderness medicine is a medical specialty concerned with medical care in remote, wilderness and expedition environments. The specialty includes prior planning, public health issues, a number of sub-specialties as well as responding to emergencies. One modern definition of wilderness medicine is "medical care delivered in those areas where fixed or transient geographic challenges reduce the availability of, or alter requirements for, medical or patient movement resources".
Josef F. Schmid is a German-American physician, NASA flight surgeon and a major general in the United States Air Force Reserves. He served as an aquanaut on the joint NASA-NOAA NEEMO 12 underwater exploration mission in May 2007. On 8 October 2021 he became one of the first humans to be Holoported off the planet and into space, visiting the International Space Station by telepresence.
Anthony L. Komaroff is an American physician, clinical investigator, editor, and publisher. He serves as the Distinguished Simcox-Clifford-Higby Professor of Medicine at Harvard Medical School and Senior Physician at Brigham and Women's Hospital in Boston.
Illnesses and injuries during space missions are a range of medical conditions and injuries that may occur during space flights. Some of these medical conditions occur due to the changes withstood by the human body during space flight itself, while others are injuries that could have occurred on Earth's surface. A non-exhaustive list of these conditions and their probability of occurrence can be found in the following sources:
Sean Kevin Roden was a NASA flight surgeon with multiple roles for medical operations including for the International Space Station (ISS) from 2004 to 2007.
Daniel Turner was a London physician who published the first textbook on dermatology in English. De Morbis Cutaneis was first published in 1714 and went through several English editions. It was also published in French and German.
