Book excerpt: Titles in the Key topics series gives rapid access to ultra- concise facts adn tips on "must know" clinical topics. Each of the +/-150 topics is summarised in handy note0style (bullet point) format. Essential information is summarised at a level that is ideal for specialty trainees embarking on professional training, and candidates undertaking postgraduate professional examinations, Practicing clinicians, speciality assistants and nurses will also find the information invaluable. Content is arranged in consistent, standardised manner, to facilitate ease and speed of use. This makes the Key Topics series the perfect resource for point-of-care reference and as a revision guide.