Bacterial Infection of Wound

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Bacterial Infection of Wound
By
Dr. Humodi A. Saeed Associate Prof. of Medical
Microbiology College of Medical Laboratory
Science Sudan University of Science and
Technology E mail address Biotechsust_at_hotmail.com
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Bacterial Infection of Wound
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The Wound

• Definition
• A wound is a breach (damage) in a normal tissue
  (May be superficial or deep) resulting
  accidentally or of planned surgery.

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The Wound

• Types
• 1. Early acute wound
• 2. Long-term chronic wounds

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Bacterial Infection of Wound

• Wound contamination
• Wound colonization
• Wound Infection

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Bacterial Infection of Wound

• Wound contamination
• The presence of non-replicating bacteria in the
  wound.

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Bacterial Infection of Wound

• Wound contamination
• All chronic wounds are contaminated by bacteria.

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Bacterial Infection of Wound

• Wound contamination
• contaminants come from the indigenous microflora
  and/or the environment.

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Bacterial Infection Wound

• Wound colonization
• The presence of replicating bacteria adherent to
  the wound in the absence of injury to the host.

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Bacterial Infection of Wound

• Wound colonization
• Most of the following organisms are normal skin
  flora.
• 1. S. epidermidis,
• 2. other coagulase ve Staphylococci.
• 3. Corynebacterium sp.
• 4. Brevibacterium sp.
• 5. Proprionibacterium acnes

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Bacterial Infection of Wound

• Wound Infection

The presence of replicating bacteria within a
wound that cause host injury.
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Bacterial Infection of Wound

• Wound Infection
• Staphylococcus aureus,
• Beta-hemolytic Streptococcus
• (S. pyogenes, S. agalactiae)
• 3. E. coli
• 4. Proteus
• Klebsiella
• Anaerobes
• Pseudomonas
• Acinetobacter

.
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Bacterial Infection of WoundLab. Diagnosis

• specimen collection.
• Tissue biopsy
• Needle aspirate
• Wound swab
• (Surface or Deep wound)

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Bacterial Infection of WoundLab. Diagnosis

• Suspected organism
• Bite wounds
• Eikenella corrodens, Pasteurella multocida,
  Pasteurella canis, Staphylococcus aureus, group A
  Streptococcus, mixed anaerobe, many gram-negative
  bacilli.
• Surgical wounds
• Staphylococrus aureus, coagulase-negative
  Staphylococcus, groups A and B Streptococci,
  Clostridium perfringens, Corynebacterium species
  many other bacteria.
• Traumatic wounds
• Bacillus species, Staphylococcus aureus, group A
  Strepiococcus, many gram negative bacilli.

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Thank you
I would like to thank Dr. Neal R. Chamberlain