Define: special-needs populations

4 oz of active ingredient is added to 500 mL of an alcohol-based solution. What is the final concentration (v/v)?

A) 0.79% B) 0.8% C) 19.35% D) 24%

Op-site, collodion, adhesive gels, and Steri-strips are examples of which type of surgical dressing?

a. one-layer b. pressure c. rigid d. three-layer