Cardiac critical Care refers to specialized systemic treatment for patients suffering from serious cardiovascular disease (CVD), which includes both heart and vascular disease. CVD is one of the world’s leading causes of death. Many general hospitals have created an cardiac critical care unit for serious CVD patients, known as the cardiovascular critical care department, in order to avoid death from CVDs. Modern treatment for CVDs has evolved as a result of technical advances in clinical cardiology, such as intrusive hemodynamic monitoring and intracoronary interventional procedures and equipment. 

The number of serious CVD patients admitted to cardiac critical care is rising year after year. In order to provide the best patient care, dedicated medical personnel are needed. Selecting effective means from different hemodynamic resources and adjusting their use according to clinical situations such as cardiogenic shock and acute heart failure is needed for optimal patient care. Furthermore, critical care patients also develop complications such as respiratory failure and renal failure. As a result, medical personnel working in such units must be able to provide systemic intensive care. 

Coronary care units (CCUs) are typically subsets of intensive care units (ICUs) devoted to the care of critically ill cardiac patients in the United States. These units are commonly found in hospitals that perform cardiothoracic surgery on a regular basis. Noncardiovascular disease-related acuity has improved dramatically in the CICU, which may be affecting mortality. Intensive Cardiac Care Units have evolved from coronary care units, which were originally designed to treat acute myocardial infarction, to care for a larger population of acute cardiac patients (ICCUs).

The provision of continuous cardiac rhythm monitoring by electrocardiography (ECG) is a key feature of the so-called cardiovascular intensive care unit (CICU). This allows for early medication, cardioversion, or defibrillation, which improves the prognosis of serious CVD patients. Furthermore, different types of diagnostic medical equipment and therapeutic equipment are needed for cardiovascular intensive care. In the CICU, systemic management is needed in addition to circulation management.