Ventilator-associated pneumonia (VAP) is a lung infection that affects people who are on
mechanical ventilation. Pneumonia affects the small airways and air sacs in the lungs. It can make it hard for oxygen to pass into the body.
This problem is commonly caused by a specific bacterium.
Mechanical ventilation can increase the risk of pneumonia. The tube that is needed in the throat makes it easier for bacteria to get deep into the lungs.
This problem is more common in older adults. Other things that may raise the risk of this problem are:
Chronic lung disease
Conditions that affect the nervous system
A weakened immune system
Long term use of antibiotics
Repeated placement of a tube in the throat
A tube placed through an opening in the throat rather than down through the nose or mouth
Long term ventilation
Long periods of lying on your back
Problems may be:
Nausea or vomiting
Thick mucus, greenish mucus, or pus-like phlegm
Shortness of breath
Nails or lips that are blue in color
The doctor will ask about your symptoms and health history. A physical exam will be done.
Your body fluids may be tested. This can be done with:
Blood tests—to measure oxygen, carbon dioxide, and acid in the blood
Blood cultures—to look for what may be causing infection
Cultures from below the chest tube
Images may be taken of the area. This can be done with:
Ventilator-associated pneumonia. EBSCO DynaMed website. Available at: https://www.dynamed.com/condition/ventilator-associated-pneumonia. Accessed August 20, 2021.
Ventilator-associated pneumonia (VAP). Centers for Disease Control and Prevention website. Available at: https://www.cdc.gov/HAI/vap/vap.html. Accessed August 20, 2021.
Last reviewed July 2021 by
EBSCO Medical Review Board
James Cornell, MD
Last Updated: 8/20/2021
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