The fifth edition, as the previous one, is strictly aligned with the revised Nursing syllabus. While retaining the strengths of the fourth edition, an effort has been made to give the latest edition a new look and make it more student friendly. In this direction, the existing figures, flowcharts, and tables have been thoroughly revised and newer illustrations added where necessary. Each chapter is followed by a synopsis to give a bird view of the important aspects dealt in the respective chapter. Long essays, short essays, short notes, and multiple choice questions (MCQs) have been included at the end of each chapter so as to serve as an active learning exercise. An exhaustive glossary of various terms used has also been provided at the end of the textbook for gaining a broad understanding of the subject.