Understanding the Ventilation-Perfusion Relationship
To ensure that enough oxygen is provided by ventilation to saturate the blood fully requires that ventilation and perfusion of the lungs are adequately matched. Ventilation (V) refers to the flow of air into and out of the alveoli, while perfusion (Q) refers to the...
Understanding Acute Coronary Syndromes
The term ‘acute coronary syndromes’ describes a group of clinical conditions, all of which usually present with chest pain as a consequence of myocardial ischaemia or infarction. The acute coronary syndromes comprise: Unstable angina Non-ST elevation myocardial...
Hepatitis B Serology and Vaccination
Hepatitis B is an infection of the liver caused by the hepatitis B virus (HBV), a double-stranded DNA virus of the Hepadnaviridae family that replicates by reverse transcription. Hepatitis B is the most common cause of hepatitis globally, and the World Health...
Practice Questions for the PLAB Part 1
The Professional and Linguistic Assessments Board (PLAB) test is the main route by which International Medical Graduates (IMGs) demonstrate that they have the necessary skills and knowledge to practice medicine in the UK. The PLAB Part 1 is a computer-based exam that...
