Final answer:
Nurses may perform controlled acts when ordered by an MD, dentist, chiropodist, or NP. Options including physiotherapists or dietitians are generally incorrect as they do not typically have the authority to order such acts, making option b the correct choice.
Step-by-step explanation:
The conditions under which nurses may perform a controlled act vary depending on jurisdictional laws and regulations. Generally speaking, a nurse may perform a controlled act when it is:
- Ordered by a physician (MD), dentist, nurse practitioner (NP), or in some jurisdictions, other health professionals such as chiropractors or podiatrists (chiropodists).
- In accordance with a hospital or healthcare facility's policies and the professional scope of practice.
- Supported by the nurse's own knowledge, skills, and judgment to safely carry out the procedure.
Based on the options given in the question, nurses may perform a controlled act when ordered by an MD, chiropractor, dentist, chiropodist, or NP. Therefore, option b is the correct choice: if ordered by an MD, dentist, chiropodist, or NP. It's important to note that other healthcare professionals like physiotherapists or dietitians typically do not have the authority to order nurses to perform controlled acts, except in certain circumstances where specific delegations or directives are in place.