Theprimary source of organisms causing surgical site infections (SSIs)is thepatient’s own endogenous flora. Bacteria from theskin, mucous membranes, or gastrointestinal tractcontaminate the surgical site, leading to infection.Common pathogens include Staphylococcus aureus, coagulase-negative staphylococci, and Enterobacteriaceae.
Why the Other Options Are Incorrect?
A. Operating room environment– While environmental contamination can contribute, it isnot the primary source.
B. Operating room personnel–Infection control measures(hand hygiene, gloves, masks) reducetransmission from personnel.
D. Healthcare personnel’s hands– Althoughhand contamination is a risk,it is secondary to the patient’s endogenous flora.
CBIC Infection Control Reference
According toAPIC guidelines, the patient’s own flora is the primary source of SSIs.
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