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Flesh-eating bacteria !

Discussion in 'Microbiology' started by Egyptian Doctor, Oct 16, 2011.

  1. Egyptian Doctor

    Egyptian Doctor  Moderator Verified Doctor

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    Necrotizing soft tissue infection is a rare but very severe type of bacterial infection that can destroy the muscles, skin, and underlying tissue. Necrotizing refers to something that causes tissue death.

    Causes, incidence, and risk factors: Many different types of bacteria can cause this type of infection. A very severe and usually deadly form of necrotizing soft tissue infection is due to Streptococcus pyogenes, which is sometimes called "flesh-eating bacteria."

    Necrotizing soft tissue infection develops when the bacteria enters the body, usually through a minor cut or scrape. The bacteria begins to grow and release harmful substances (toxins) that:
    • Directly kill tissue
    • Interfere with the blood flow to the tissue
    • Break down materials in the tissue, which rapidly spreads the bacteria, leading to widespread effects such as shock
    Symptoms: The first sign of infection may be a small, reddish, painful spot or bump on the skin. This quickly changes to a very painful bronze- or purple-colored patch that grows rapidly. The center may become black and die off. The skin may break open and ooze fluid. The wound may quickly grow in less than an hour.

    Symptoms may include general ill feeling, fever, sweating, chills, nausea, dizziness, profound weakness, and finally shock. Without treatment, death can occur rapidly.

    Signs and tests: How the skin and tissue look can help the doctor diagnose a necrotizing soft tissue infection. Often a patient will be diagnosed in the operating room by a surgeon. Imaging tests, such as CT scans, are sometimes helpful.

    Tests performed on blood, fluids, or tissue from the area may determine the bacteria that is causing the infection.

    Treatment: Powerful, broad-spectrum antibiotics must be given immediately through a vein (IV). Surgery is required to open and drain infected areas and remove dead tissue. Sometimes donor immunoglobulins (antibodies) are given by vein to help fight the infection.

    Skin grafts may be needed after the infection goes away. If an arm or leg infection cannot be controlled, amputation of the limb may be considered.

    If the bacteria is determined to be an oxygen-avoiding organism (anaerobe), the patient may receive hyperbaric oxygen therapy. This involves placing the patient in a chamber that delivers 100% oxygen at high pressure.

    Expectations (prognosis): How well a patient does depends on:
    • How fast the diagnosis was obtained
    • The type of bacteria causing the infection
    • How quickly the infection spreads
    • How well the antibiotics work
    Scarring and deformity are common with this type of disease. The death rate is high, even with aggressive treatment and powerful antibiotics. Untreated, the infection spreads and causes death.

    Complications:
     

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  2. rabab froja

    rabab froja Famous Member

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    very good brief
     


  3. Ingrid

    Ingrid Well-Known Member

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    Thank you for this quick review, good information!
     


  4. Nana Shonk

    Nana Shonk Bronze Member

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    Necrotizing fasciitis
    What is an infection? If any person gets injured and allow the cuts and wounds open to the environment through which bacteria and microbes enter our skin damaging it. This infected cuts and wounds when start getting affected by bacteria and microbes is called infection. In this, Necrotizing Fasciitis the infected area skins and muscles are quickly destroyed by bacteria and what is bacteria, is flesh eating bacteria. These bacteria actually not eat up our skin or muscles but release toxins in our skin which trigger our health. The patients suffering from these have very painful symptoms. The appearance will look normal but at the same time the pain is an oomph factor.
     

    Andrea Gronwall and Yashwin A like this.

  5. alicat

    alicat Active member

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    Very informative!! Thanks
     


  6. Yashwin A

    Yashwin A Young Member

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    thanks . Very nice brief info
     


  7. JudeIsha

    JudeIsha Young Member

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    thank you
     


  8. Shahid Dar

    Shahid Dar Famous Member

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  9. Noahkins.

    Noahkins. Young Member

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    Thanx for the information...........
     


  10. suryaadhiprakoso

    suryaadhiprakoso Young Member

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    wow very helpful..^^
    thank you
     


  11. indra

    indra Bronze Member

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    Ngeri mbok...
    Thanks
     


  12. M W Salam

    M W Salam Young Member

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    that was a very nice presentation...
    :)
     


  13. ralo

    ralo Active member

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    secondary healing of skin
     


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