For which client should the nurse instruct the assistive personnel to avoid using a straight razor?

Using a straight razor can pose significant risks to clients who are at an increased risk of bleeding. In the case of a client taking warfarin, a blood thinner, the likelihood of bleeding from even minor cuts is elevated. Warfarin alters the blood's clotting ability, making it essential to minimize any potential for injury during activities such as shaving.

In contrast, while a postoperative client may also have specific needs for careful handling, the primary concern with using a straight razor is directly related to bleeding risk rather than surgical recovery. Clients with an infection do not necessarily face an increased bleeding risk from shaving, and those taking acetaminophen face no additional bleeding risk compared to the general population. Therefore, instructing assistive personnel to avoid using a straight razor for clients on warfarin is crucial for ensuring their safety and minimizing the risk of complications.