Gangrene-Symptoms And Causes

Gangrene-Symptoms And Causes

Question 1. Write A Short Note On Gas Gangrene.
Answer:

Gas gangrene is a special form of wet gangrene caused by gas-forming clostridia.

• These bacteria gain entry into the tissues through the open contaminated wound, especially in the muscles, or as a complication of operations on the colo,n, which normally contains clostridia.
• Clostridiproduces various toxins that produce necrosis and edema locally and are absorbed, producing profound systemic manifestations.

Gangrene symptoms

Gas Gangrene Gross Changes

• The affected area is swollen, edematous, painful, and crepitant due to the accumulation of gas bubbles within the tissue.
• The affected tissue becomes dark black and foul-smelling.

Gas Gangrene Microscopically

• Muscle fibers undergo coagulative necrosis with liquefaction.
• A large number of gram-positive bacilli can be identified.
• At the periphery, a zone of leucocyte infiltration, edema, and congestion are found.
• Capillary and venous thrombi are common.

Dry vs wet gangrene

Question 2. Write The Difference Between Moist And Dry Gangrene.
Answer: