Health Leadership Associates is pleased to introduce this fourth edition. This book has been developed especially for Pediatric Nurse Practioners and Family Nurse Practitioners preparing to take certification examinations. Also a great reference book in the practice setting. The text is divided into systems with also an indepth coverage of growth and development and health promotion and maintenance. The common disorders of the various body systems provide succinct summaries of definitions, etiology, signs and symptoms, clinical findings, differential diagnoses, diagnostic tests\findings, and managment\treatment. The final chapter addresses PNP role development, current trends and health policy issues including topics such as credentialing, legal issues, legislation, reimbursement and delivery systems. Following each chapter are test questions, which are intended to serve as an introduction to the testing arena. In addition a bibliography is included for those who need a more indepth discussion of the subject matter in each chpater.