• This book is a concise form of the main API Textbook for “on-the-spot” use and application. • The goal of this handbook or companion book is to provide students and residents a practical and systematic framework or a “how-to” and “hands-on” focus for initiating and imparting patient care mainly at the bedside and elsewhere. • This book has been conceptualized so that students and residents can use it as a quick referral and also as a guide during teaching and at the time of examination. • This book focuses on practical approaches and considerations.