The book, written as per the revised INC Syllabus 2021-22 for undergraduate nursing students, is a comprehensive guide for them with updated information. Each chapter starts with chapter outline to provide a glimpse of entire chapter. Highly experienced and qualified authors have put their heads together to bring out their best regarding the subject to help the students achieve excellent academic orientation and the contents of the book have been reviewed by eminent nursing experts. Text has been presented in a simple, understandable and lucid language; the diagrams and the flowcharts at the appropriate places make the book easy to use and comprehend. Throughout the book, the text is supported with numerous diagrams, figures, images and illustrations have been included to enhance the reading experience. Each chapter ends with numerous multiple choice questions (MCQs), short answer questions and long answer question have been incorporated for assessing cognitive skill ability and prepare students for various examinations.