This book attempts to make comprehensive and critical exposition of all the facts of nursing concepts. It is designed to serve as a reliable guide to work as educator, practitioner, clinician, or scholar.  This book provides comprehensive coverage of not only graduate nursing curricula but a step ahead so that postgraduates too will be benefited. It guides a student in right direction to have relevant knowledge, deeper understanding and critical thinking. It meets all the needs and expectations of an inspiring candidate, persuades them to crack any examination whether it is for staff development or entry to higher education in nursing field. It is gateway for success, provided a candidate goes through it thoroughly.