This respected text offers a solid understanding of the theoretical foundation of nursing practice as well as comprehensive patient-care guidance based on the latest scientific evidence. Thoroughly updated and revised, this 3rd edition examines diseases and disorders of every body system as well as men's health, women's health, psychosocial problems, and more. It also presents new coverage of pathophysiology, diagnostic reasoning, evidence-based practice, geriatrics, and pediatrics. Clear, concise, readable, well organized, and easy to follow, the text, together with the resources online at DavisPlus, offers complete coverage of the APRN's role as a primary care provider. This title integrates new discussions of health policy and primary care throughout the text. It presents more information on pediatrics and geriatrics based on new advanced practice guidelines. It includes new content relevant to Doctor of Nursing Practice (DNP) programs. It offers two new appendices on the aging process and the older adult. It includes new coverage of coding and billing. It delivers enhanced teaching and learning resources online at DavisPlus. It organizes content around the Circle of Caring framework for nursing-based knowledge and holistic care. It explores complementary and alternative treatments for each disorder. It considers interactions of pharmaceuticals with alternative medications and nutraceuticals. It features chapters on decision-making, palliative care, psychotherapy in primary care, self care, and the business of advanced practice.