Final answer:
The abbreviation 'QD' indicates a need for further teaching because it can be easily confused with other abbreviations.
Step-by-step explanation:
The abbreviation 'q4h' stands for 'every 4 hours', which is commonly used in healthcare settings to indicate the frequency of medication administration or other treatments. This abbreviation does not indicate a need for further teaching.
The abbreviation 'PO' stands for 'by mouth' and is used to specify the route of administration for medication. It is important to use this abbreviation correctly to avoid medication errors, so it does not indicate a need for further teaching.
The abbreviation 'SC' stands for 'subcutaneous' and is used to specify the route of administration for certain medications, such as insulin. This abbreviation is also correct and does not indicate a need for further teaching.
The abbreviation 'QD' stands for 'every day' and is often used to indicate the frequency of medication administration. However, this abbreviation is not recommended due to the potential confusion it can cause, as it could be mistaken for 'QID' (four times a day) or 'QOD' (every other day). Therefore, the use of 'QD' indicates a need for further teaching.