ICU is a term used to describe an emergency unit in a hospital that provides intensive care to patients with extremely severe and potentially life-threatening illnesses.

Platelets are non-nucleated cells that circulate in the bloodstream and are produced in the bone marrow from Megakaryocytes. Platelets play a role in the body's hemostasis process. If platelets are reduced, bleeding can occur.

The nutritional needs of ICU patients are complex. These patients may require adjustments in protein and electrolyte levels. Nutritional issues for patients on mechanical ventilation for long periods of time are particularly important as they affect the patient's ability to recover.

Hyperglycemia or hypoglycemia is a common disorder in intensive care units in both diabetic and non-diabetic patients. Uncontrolled hyperglycemia/hypoglycemia can be a cause of death in ICU patients.

Fever is a common symptom in ICU patients. It has many different causes and is sometimes difficult to diagnose. If an ICU patient has a fever, diagnosing and treating the cause correctly is extremely important in improving the patient's mortality rate.