Which abbreviation indicates a patient is not allowed to eat or drink?

The abbreviation that indicates a patient is not allowed to eat or drink is "NPO," which stands for "nil per os." This Latin term translates to "nothing by mouth," and it is frequently used in medical settings to instruct healthcare providers and caregivers that a patient should not consume any food or liquids. This directive may be given for various reasons, such as preparing for surgery, diagnostic tests, or to prevent complications in patients with certain medical conditions.

Understanding this abbreviation is crucial for ensuring patient safety and adherence to medical protocols. For instance, if a patient is scheduled for surgery, consuming food or drink could lead to complications during anesthesia. Therefore, recognizing NPO and its implications in patient care is vital for CNAs.