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Meningitis - staphylococcal

Staphylococcal meningitis

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Causes

Staphylococcal meningitis is caused by staphylococcus bacteria. When it is caused by Staphylococcus aureus or Staphylococcus epidermidis bacteria, it usually develops as a complication of surgery or as an infection that spreads through the blood from another site.

Risk factors include:

  • Infections of heart valves
  • Past infection of the brain
  • Past meningitis due to spinal fluid shunts
  • Recent brain surgery
  • Spinal fluid shunt
  • Trauma

Definition

Meningitis is an infection of the membranes covering the brain and spinal cord. This covering is called the meninges.

Bacteria are one type of germ that may cause meningitis. The staphylococcal bacteria is one type of bacteria that causes meningitis.

Exams and Tests

The health care provider will perform a physical exam. Questions will focus on symptoms and risk factors.

If the doctor thinks meningitis is possible, a lumbar puncture (spinal tap) is done to remove a sample of spinal fluid for testing. If you have a spinal fluid shunt, the sample may be taken from this instead.

Tests may include:

Outlook (Prognosis)

Early treatment improves the outcome. However, some people do not survive. Young children and adults over age 50 have the highest risk for death.

Staphylococcal meningitis often improves more quickly, with fewer complications, if the source of the infection is removed. The source may include shunts, hardware in joints, or artificial heart valves.

Possible Complications

Long-term complications may include:

Prevention

In high-risk people, taking preventive antibiotics before diagnostic or surgical procedures may help reduce the risk. Discuss this with your doctor.

Symptoms

Symptoms may come on quickly, and include:

Other symptoms that can occur with this disease:

  • Agitation
  • Bulging fontanelles in infants
  • Decreased alertness
  • Poor feeding or irritability in children
  • Rapid breathing
  • Unusual posture, with the head and neck arched backwards (opisthotonos)

Treatment

Antibiotics will be started as soon as possible. Vancomycin is the first choice for suspected staphylococcal meningitis. Nafcillin is sometimes used instead.

Often, treatment will include a search for, and removal of, possible sources of bacteria in the body. These include shunts or artificial heart valves.

When to Contact a Medical Professional

Call the local emergency number (such as 911) or go to an emergency room if you suspect meningitis in a young child who has the following symptoms:

  • Feeding problems
  • High-pitched cry
  • Irritability
  • Persistent, unexplained fever

Call the local emergency number if you develop any of the serious symptoms listed above. Meningitis can quickly become a life-threatening illness.

Review Date: 7/31/2016
Reviewed By: Jatin M. Vyas, MD, PhD, Assistant Professor in Medicine, Harvard Medical School; Assistant in Medicine, Division of Infectious Disease, Department of Medicine, Massachusetts General Hospital, Boston, MA. Also reviewed by David Zieve, MD, MHA, Isla Ogilvie, PhD, and the A.D.A.M. Editorial team.

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