Candidal Web Space Infection Diagnosis and Management

Pre-Collection Preparation and Specimen Collection

The American Diabetes Association and Infectious Diseases Society of America recommend thorough cleansing and debridement of the wound site before obtaining a specimen for culture to avoid contamination with colonizing organisms 1, 2
The Infectious Diseases Society of America suggests that debriding all nonviable tissue from the wound before specimen collection removes contaminating organisms and exposes the actual infected tissue, with a strength of evidence rated as high 1, 2
The Centers for Disease Control and Prevention recommend ensuring the patient has not received antibiotics immediately prior to collection if possible, though this should not delay urgent empiric therapy in severe cases, with a strength of evidence rated as moderate 1, 2

The Infectious Diseases Society of America recommends using a sterile scalpel blade or dermal curette to scrape tissue from the ulcer base after debridement, with a sensitivity and specificity significantly higher than superficial swabs 1, 2
The Clinical Infectious Diseases journal suggests performing a tissue biopsy from the debrided wound base, with a strength of evidence rated as high 1, 2
The Intensive Care Medicine journal recommends sending specimens promptly in a sterile container or appropriate transport media, with a strength of evidence rated as moderate 2

The Infectious Diseases Society of America recommends that blood cultures should be obtained if the patient has systemic signs of infection or candidemia is suspected, though conventional blood cultures detect only 50% of disseminated candidiasis, with a strength of evidence rated as moderate 5
The Intensive Care Medicine journal suggests considering lysis centrifugation of blood cultures if available, as this increases yield by 30-40%, with a strength of evidence rated as low 5
The European Society of Clinical Microbiology and Infectious Diseases recommends species-level identification as mandatory because non-albicans species are increasingly common in diabetic patients and have different antifungal resistance patterns, with a strength of evidence rated as high 5

The American Diabetes Association recommends that diabetic and immunocompromised patients with suspected fungal infection should always have cultures obtained given their higher risk of unusual pathogens and resistant organisms, with a strength of evidence rated as high 1, 2
The Infectious Diseases Society of America suggests that all moderate-to-severe infections require cultures before initiating therapy, with a strength of evidence rated as moderate 2
The Clinical Infectious Diseases journal recommends that patients with chronic wounds or recent antibiotic exposure require cultures to guide targeted therapy, with a strength of evidence rated as moderate 1, 2