An Intensive Care Unit (ICU) is a specialized section of a hospital designed to provide comprehensive care for patients with severe or life-threatening conditions. It is equipped with advanced medical technology and staffed by a team of healthcare professionals, including doctors, nurses, and respiratory therapists, who monitor patients closely and administer treatments. Patients in the ICU may require constant observation due to issues such as severe infections, respiratory failure, or post-surgical recovery. The environment is typically more controlled and quieter than other hospital areas, allowing for focused care and quick response to any changes in a patient's condition.