Skip navigation

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

URL of this page: https://medlineplus.gov/criticalcare.html

Critical Care

Also called: ICU, Intensive care
On this page

Learn More

See, Play and Learn

  • No links available

Resources

Summary

What is critical care?

Critical care is medical care for people who have life-threatening injuries and illnesses. It usually takes place in an intensive care unit (ICU). A team of specially-trained health care providers gives you 24-hour care. This includes using machines to constantly monitor your vital signs. It also usually involves giving you specialized treatments.

Who needs critical care?

You need critical care if you have a life-threatening illness or injury, such as:

What happens in a critical care unit?

In a critical care unit, health care providers use lots of different equipment, including:

  • Catheters, flexible tubes used to get fluids into the body or to drain fluids from the body
  • Dialysis machines ("artificial kidneys") for people with kidney failure
  • Feeding tubes, which give you nutritional support
  • Intravenous (IV) tubes to give you fluids and medicines
  • Machines which check your vital signs and display them on monitors
  • Oxygen therapy to give you extra oxygen to breathe in
  • Tracheostomy tubes, which are breathing tubes. The tube is placed in a surgically made hole that goes through the front of the neck and into the windpipe.
  • Ventilators (breathing machines), which move air in and out of your lungs. This is for people who have respiratory failure.

These machines can help keep you alive, but many of them can also raise your risk of infection.

Sometimes people in a critical care unit are not able to communicate. It's important that you have an advance directive in place. This can help your health care providers and family members make important decisions, including end-of-life decisions, if you are not able to make them.

Treatments and Therapies

Related Issues

Clinical Trials

Children

Patient Handouts

The information on this site should not be used as a substitute for professional medical care or advice. Contact a health care provider if you have questions about your health.