Certified Wound Care Nurse (CWCN) Practice Exam

Which treatment is contraindicated in the presence of metallic ions in a wound?

1. Electrical stimulation

2. Hyperbaric oxygen therapy

3. Ultrasound therapy

4. Negative pressure wound therapy

The correct answer is: Electrical stimulation

Electrical stimulation is contraindicated in the presence of metallic ions in a wound because these ions can interfere with the electrical current required for the therapy to be effective. In the presence of metallic ions, the electrical field can become disrupted, leading to ineffective treatment and potential tissue damage. Additionally, the presence of metallic debris can create an environment conducive to complications, such as localized heating or changes in pH, which may exacerbate the wound condition rather than promote healing. The other treatment modalities listed do not have the same contraindications when it comes to the presence of metallic ions in wounds. Hyperbaric oxygen therapy, for instance, primarily focuses on delivering oxygen under increased atmospheric pressure and is not affected by metallic ions. Ultrasound therapy utilizes sound waves and is also unlikely to be impacted negatively by the presence of such ions. Negative pressure wound therapy works by creating a vacuum environment to promote healing and does not directly interact with metallic materials in the same detrimental way.