Intensivist:

Between the 1950s and 1990s, ICUs or CCUs (Critical Care Units) were largely used to care for premature babies, very sick patients and those with post-surgical complications. But since the 1990s, advancements in Medicine and Healthcare combined with newer diseases being diagnosed, has created a compelling need for ICUs.
Patients with cerebro-vascular complications and tumours such as that of the lung, require specialized care. Admitting them in the ICU reduces time spent in the hospital.
Transplantation of various organs requires a lot of post-operative monitoring and intensive care, which is best provided in an ICU. Not having an ICU can increase mortality rate and failure of the transplant.
The use of minimally invasive procedures followed by intensive care in an ICU accelerates rehabilitation in patients with medical or nursing complications.
The use of specialized medicine combined with intensive care has helped patients with single or multiple organ failure recuperate faster.
Increased cases of trauma, such as those from accidents, stab-wounds, gun-shot wounds, falls from heights and severe burns require specialized care