Arterial blood gas analysis plays an indispensable role in the assessment and management of patients with a huge range of acute medical and surgical problems. Its importance as a key tool in the work-up of acutely unwell patients rivals that of the ECG and the chest x-ray. This book covers all aspects of the arterial blood gas in a simple, user-friendly manner. The first part explains the technique, the values obtained and common patterns of abnormalities, while the second part comprises a series of worked examples and case scenarios to allow the reader to put this system into practice.