What can be added to an oxygen system to reduce imitation to mucous membranes?

Rationale:
A. A flow rate of 4 liters per minute is within the safe range for a nasal cannula but is not the maximum recommended rate. While some clients may require this flow, higher flow rates are possible and safe under certain conditions.

B. A flow rate of 6 liters per minute is the maximum flow rate typically recommended for a standard nasal cannula. Exceeding this rate can cause drying of the nasal mucosa, discomfort, and reduced effectiveness of oxygen delivery. Flow rates above 6 liters per minute generally require the use of a different delivery device, such as a simple face mask or high-flow oxygen system, to maintain safety and adequate oxygenation.

C. A flow rate of 8 liters per minute is too high for a standard nasal cannula and can cause nasal irritation, drying, and discomfort. It may also be less effective because the client may inhale room air that dilutes the oxygen.

D. A flow rate of 2 liters per minute is safe and commonly used for clients needing low-level supplemental oxygen, but it is not the maximum allowable flow rate for a nasal cannula.

Rationale:
A. Placing the client’s first urine void in the collection container is incorrect because the first void of the day is always discarded in a 24-hour urine collection. The collection period begins with the second void, which is retained and then all subsequent urine is collected for the next 24 hours. Including the first void would result in inaccurate measurement of substances such as creatinine, protein, or electrolytes, which could affect diagnostic results.

B. Placing an external urinary catheter with a collection bag is outside the UAP’s scope of practice and is unnecessary for a routine 24-hour urine collection. Catheter insertion requires a licensed nurse to assess for complications and maintain sterile technique. Using a catheter when not indicated could increase the risk of infection and is not part of standard urine collection procedures.

C. Bringing a bucket of ice into the client’s bathroom shows that the UAP understands a critical aspect of 24-hour urine collection. Urine specimens must be kept cold during the collection period to prevent bacterial growth and chemical degradation, which ensures the accuracy and reliability of the laboratory results. This step is essential for maintaining specimen integrity over the entire 24-hour collection period.

D. Instructing the client to urinate directly into the specimen container for the first void is incorrect. The first void must be discarded, and the client’s urine for the remainder of the 24-hour period must be collected according to the protocol. Direct collection for the first void would compromise the accuracy of the test results.