Certified Wound Ostomy Nurse (CWON) Practice Test

When are cultures especially indicated?

1. When antiseptic solutions are used

2. When topical antibiotic ointments are used

3. When using only dressings

4. Only in the absence of any infection

The correct answer is: When topical antibiotic ointments are used

Cultures are especially indicated when topical antibiotic ointments are used because these agents can alter the normal bacterial flora and may mask the symptoms of an underlying infection. In this context, obtaining a culture is essential for identifying the specific organism causing the infection and determining its antibiotic sensitivities, which guides appropriate treatment. The use of topical antibiotics can both reduce the visibility of an infection and complicate the interpretation of clinical signs, making culture testing crucial for accurate diagnosis and effective management. In contrast, cultures may not be necessary when antiseptic solutions are used as they are typically broad-spectrum agents that can clear or inhibit various bacteria, potentially making it more challenging to identify a specific pathogen. When only dressings are employed, if there are no signs of infection, cultures may not provide additional value, and in the absence of any infection, testing is generally unnecessary. Hence, the situation of using topical antibiotics creates a clear indication for cultures to ensure proper treatment pathways.