Articles

Understanding the APGAR Score

Understanding the APGAR Score

The Apgar score is a simple method of assessing a neonate’s well-being at birth. There are five criteria, each of which is allocated a score between zero and two. The assessment is generally performed at one and five minutes after delivery, and may be repeated later...

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John Snow and the 1854 Cholera Outbreak

John Snow and the 1854 Cholera Outbreak

In August 1854, Soho in London was struck with a severe cholera outbreak. Cholera is a gastrointestinal infection caused by the bacterium Vibrio cholerae. It is still prevalent in areas with inadequate sanitation and poor food and water hygiene and remains a...

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Wound Healing

Wound Healing

Wound healing, as a normal biological process in the human body, is achieved through four precisely and highly programmed events: haemostasis, inflammation, proliferation, and remodelling. For a wound to heal successfully, all four phases must occur in the proper...

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Haemophilia

Haemophilia

Haemophilia is a group of hereditary genetic disorders that result in impaired coagulation. There are two main types of haemophilia: Haemophilia A Haemophilia B Haemophilia A Haemophilia A is a bleeding disorder caused by a deficiency of clotting factor VIII. It is...

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Acute Limb Ischaemia

Acute Limb Ischaemia

Acute limb ischaemia is defined as a sudden decrease in limb perfusion that threatens the viability of the limb. It is most commonly caused by acute thrombotic occlusion of a previously partially occluded, thrombosed arterial segment or secondary to an embolus from a...

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Germ Warfare and the Siege of Fort Pitt

Germ Warfare and the Siege of Fort Pitt

Germ warfare is defined as "the use of biological toxins or infectious agents with the intent to kill or incapacitate as an act of war." These biological agents are quite literally used as deadly living weapons. Germ warfare is by no means a modern concept, and...

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Cytochrome p450 Enzymes and Drug Metabolism

Cytochrome p450 Enzymes and Drug Metabolism

Many drugs are metabolised in the liver. Drugs are either metabolised by phase I reactions (oxidation, reduction, or hydrolysis) or phase II reactions (e.g. glucuronidation). Phase I reactions are mainly carried out by the cytochrome P450 family of isoenzymes, of...

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Building a Career in Global Health and Expedition Medicine

Building a Career in Global Health and Expedition Medicine

Building a career in global health and expedition medicine - the good, the bad, and the stuff no one tells you! Can I be a neurosurgeon and travel the world with my work? I’d like to do paediatrics but with some humanitarian work- is that possible? Will I still be...

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Understanding Homeostasis

Understanding Homeostasis

Homeostasis is the property of a system in which variables are regulated so that internal conditions remain stable and relatively constant. Examples of homeostasis include the regulation of temperature and pH balance. The two body systems that are responsible for...

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