Hospital-Acquired Pneumonia


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Definition

Hospital-acquired pneumonia is an infection of the lungs that occurs during a hospital stay. This type of pneumonia can be very severe. Sometimes it can be fatal.


Alternative Names

Nosocomial pneumonia; Ventilator-associated pneumonia; Health-care associated pneumonia


Causes, incidence, and risk factors

Pneumonia is a common illness. It is caused by many different germs. Hospital-acquired pneumonia tends to be more serious than other lung infections, because:

  • Patients in the hospital are often very sick and cannot fight off germs.
  • The types of germs present in a hospital are often more dangerous than those encountered in the community.

Hospital-acquired pneumonia occurs more often in patients who are using a respirator machine to help them breathe. This machine is also called a ventilator. This type of pneumonia is known as ventilator-associated pneumonia.

Hospital-acquired pneumonia can also be spread by health care workers, who can pass germs from their hands or clothes from one patient to another. That is why hand-washing, wearing gowns, and using other safety measures is so important in the hospital.

Patients who are more prone to getting hospital-acquired pneumonia include patients who:

  • Are alcoholic
  • Have had chest surgery or other major surgery
  • Have a weak immune system from cancer treatment, certain medicines, or severe wounds
  • Have long-term (chronic) lung disease
  • Breathe saliva or food into their lungs as a result of not being fully alert or problems swallowing
  • Are older

References

American Thoracic Society. Guidelines for the management of adults with hospital-acquired, ventilator-associated, and healthcare-associated pneumonia. Am J Respir Crit Care Med. 2005 Feb 15;171(4):388-416.

Chastre J, Luyt CE. Ventilator-associated pneumonia. In: Mason RJ, Broaddus VC, Martin TR, et al. Murray& Nadel's Textbook of Respiratory Medicine. 5th ed.Philadelphia,Pa: Saunders Elsevier; 2010:chap 33.

Craven DE, Chroneou A. Nosocomial pneumonia. In: Mandell GL, Bennett JE, Dolin R, eds. Principles and Practice of Infectious Diseases. 7th ed. Philadelphia, Pa: Elsevier Churchill Livingstone; 2009:chap 303.

Fishman N, Calfee DP. Prevention and control of health care-associated infections. In: Goldman L, Schafer AI, eds. Cecil Medicine. 24th ed.Philadelphia,PA: Saunders Elsevier; 2011:chap 290.

Limper AH. Overview of pneumonia.In: Goldman L, Schafer AI, eds. Cecil Medicine. 24th ed.Philadelphia,PA: Saunders Elsevier; 2011:chap 97.


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Review Date: 2/26/2012
Reviewed By: David C. Dugdale, III, MD, Professor of Medicine, Division of General Medicine, Department of Medicine, University of Washington School of Medicine. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M. Health Solutions, Ebix, Inc.
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Last Updated 4/3/2012
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