Wound, Ostomy and Continence Nurses Society (WOCN) Practice Exam

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What is the recommended pressure for irrigation when cleansing a necrotic wound?

  1. 4-5 PSI

  2. 8-15 PSI or pulsatile lavage

  3. 20-30 PSI

  4. Over 30 PSI

The correct answer is: 8-15 PSI or pulsatile lavage

In the context of cleansing a necrotic wound, the recommended pressure of 8-15 PSI or using pulsatile lavage is supported by evidence-based practice. This pressure range is effective in removing debris and bacteria from the wound bed while minimizing the risk of further tissue injury. Achieving effective cleaning at this pressure helps facilitate granulation and the healing process. Irrigating at pressures lower than this range may not adequately remove all necrotic tissue, which can impede healing. Conversely, using pressures higher than 15 PSI may cause trauma to the surrounding healthy tissue and increase the risk of adverse effects, such as further damage or bleeding. Therefore, the 8-15 PSI range is ideal, balancing effectiveness with safety for necrotic wound management.

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