pus.ppt
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This document discusses types of pus and its formation. Pus is a thick, yellow or green fluid that accumulates at the site of an infection. It contains dead tissue, white blood cells, and bacteria. The color and smell of pus depends on the infecting organism. Pus is formed when the body sends white blood cells to fight infection, and some cells and surrounding tissue die off. Common bacteria that cause pus include Staphylococcus aureus and Streptococcus pyogenes, which release toxins damaging tissue. Risk factors for postoperative pus include diabetes, smoking, obesity, long surgeries, and weakened immunity. Any pus must be drained and treated with antibiotics based on gram stain and culture
pus.ppt
- 1. Wednesday, April 12, 2023 1 Types of pus DR. HIWA OMER AHMED PROFESSOR IN GENERAL AND BARIATRIC SURGERY UNIVERSITY OF SULAIMANI COLLEGE OF MEDICINE – SULAIMANI CITY- KURDISTAN
- 2. Wednesday, April 12, 2023 2 Pus Pus is a whitish-yellow, yellow, or brown- yellow protein-rich fluid called liquor puris that accumulates at the site of an infection.
- 3. Wednesday, April 12, 2023 3 Overview Pus is a thick fluid containing dead tissue, cells (WBC), and bacteria. Depending on the location and type of infection, pus can be many colors, including white, yellow, green, and brown. While it sometimes has a foul smell, it can also be odorless.
- 4. Wednesday, April 12, 2023 4 Color and smell The whitish-yellow, yellow, yellow-brown, and greenish color of pus is the result of an accumulation of dead neutrophils. Pus can sometimes be green because some white blood cells produce a green antibacterial protein called myeloperoxidase. Pseudomonas aeruginosa produces a green pigment called pyocyanin. Pus from infections caused by P. aeruginosa is particularly foul-smelling. If blood gets into the affected area, the yellowish or greenish color may also have tinges of red.
- 5. Wednesday, April 12, 2023 5 Pathophysiology of pus formation When the body detects an infection, it sends neutrophils, to destroy the fungi or bacteria. During this process, some of the neutrophils and tissue surrounding the infected area will die. Pus will accumulate as the dead material. Many types of infection can cause pus. Infections involving the bacteria Staphylococcus aureus Streptococcus pyogenes are especially prone to pus. Both of these bacteria release toxins that damage tissue, creating pus.
- 6. Wednesday, April 12, 2023 6 Causes for postoperative suppurations DM smoking obesity surgical procedures that last for more than two hours Dysfunctioned immune system undergoing treatment, such as chemotherapy, steroid..etc
- 7. Wednesday, April 12, 2023 7 Pus any where must be drained Gram stain+ empirical AB C & S, AB accordingly