Perioperative fluid therapy requires the correct selection, amount, and composition of fluids based on the patient's underlying pathology, state of hydration, and type and duration of surgical stress. Filling a gap in the literature, this source provides a solid foundation to practical perioperative fluid management, fluid solutions, and the utilization of fluids in clinical and surgical environments, and analyzes the composition of body compartments, the regulation of water and electrolytes, and bodily response to traumatic and surgical conditions.