Which example reflects the correct use of approved abbreviations in a medical record?

The correct choice demonstrates proper abbreviation usage in a medical record by including the medication name, the dosage, and the route in a concise manner. Using "5mg" adheres to accepted medical notation, which uses numerical values for precise measurement while maintaining clarity and brevity. Additionally, “PO” is commonly used in medical documentation to indicate oral administration, ensuring that the information is conveyed efficiently to other healthcare professionals.

In contrast, the other examples offer less clarity or are inconsistent with standard abbreviations. For instance, spelling out "milligrams" and "by mouth" or using "five" instead of the numerical "5" may not conform to the concise format often preferred in medical records. The goal of using approved abbreviations is to facilitate clear communication among healthcare providers, which is effectively achieved in the correct answer.