Sedation is an essential part of modern intensive care, helping clinicians manage critically ill patients who require mechanical ventilation and other life-support interventions. Yet achieving the right depth of sedation remains a significant clinical challenge. Propofol is the first-line sedative of choice in many ICU settings, but patients can respond very differently to the same dose, particularly during critical illness. Current assessment methods rely largely on observing the patient's response, rather than directly measuring the amount of drug in their system.

The evidence presented here examines the relationship between sedation practice, patient outcomes and the demands placed on critical care services. It explores how sedation is currently delivered and assessed, why practice needs to evolve, and the consequences associated with excessive or prolonged sedation, including delirium, cognitive decline, delayed extubation, longer ICU stays and increased mortality. It also considers the wider clinical and economic implications, from ventilator-associated pneumonia and cancelled surgery to the efficient use of critical care capacity.

Taken together, this research highlights the importance of more precise, individualised sedation management. It provides the clinical context for understanding the potential role of measuring propofol concentrations alongside established bedside assessment, supporting clinicians in making better-informed decisions about sedation and its impact on patients.