Antidiuretic Hormone (ADH) and Water Balance Disorders

This advanced topic explores the physiology of Antidiuretic Hormone (ADH/Vasopressin) and its critical role in regulating water balance and plasma osmolality. Zambian university students in clinical biochemistry, physiology, or medicine will study the synthesis, release, and action of ADH on the renal collecting ducts. The module covers disorders of ADH function, including Syndrome of Inappropriate ADH Secretion (SIADH) and Diabetes Insipidus (central and nephrogenic). Mastery of this topic is essential for interpreting serum and urine osmolality results, diagnosing complex fluid and electrolyte imbalances, and excelling in tertiary-level examinations. This knowledge is crucial for managing patients in critical care, nephrology, and endocrinology departments within Zambian hospitals.