The document discusses the referral system in healthcare. It defines referral as sending a patient to another physician for management of a specific problem, while the original physician coordinates total care. Factors affecting referrals include specialist availability, physician specialty, training, and uncertainty in diagnosis. The referral process involves decision making, considering the patient's background, selecting an appropriate specialist, preparing the patient and family, and preparing the consultant. Benefits are prompt diagnosis and management for patients, learning for physicians, and improved quality of care. Types of referrals include mandatory, elective, interval, collateral, cross-referral, and self-referral. The purposes are to provide comprehensive care and access to specialized services. The roles of nurses include observing