B. Infection of wound
Soil contaminated wound . It occurs after car accident and war. . It is caused by gram-negative rods.
. Extensive tissue destruction with necrosis of muscle, foul
smelling discharge and gas under the skin. . It is mainly caused by C. perfringens. Burns . Infection of burn is by P. aeruginosa, S. aureus, S. pyogenes and gram-negative rods. Surgical wounds . Types
. Clean wound . Clean contaminated wound . Contaminated wound . Dirty wound Laboratory diagnosis: Specimen: Swab from lesion, ulcer and discharge. Smear: Gram staining from primary specimen or culture. Culture: Blood agar medium and Mac Conkey agar medium Biochemical and sensitivity testing for microbe identification. Treatment: Based on sensitivity testing.