A nurse is administering platelets to a client who reports having lower back pain and feeling chilled and itchy. Which of the following actions should the nurse take first?

A) An older adult who is confused and has urinary frequency:
This client is at the greatest risk for a fall due to several factors. Confusion increases the likelihood of disorientation and impaired judgment, leading to accidents. Urinary frequency may necessitate frequent trips to the bathroom, increasing the chances of falls, especially if the client is disoriented or unsteady on their feet.

B) An older adult with hearing impairment:
While hearing impairment can contribute to a fall risk by limiting the client's ability to hear warnings or instructions, it may not pose as immediate a risk as confusion and urinary frequency, which directly affect mobility and judgment.

C) A client who has a dressing on his foot due to a pressure ulcer:
While having a dressing on the foot due to a pressure ulcer increases the risk of falls by potentially affecting the client's gait and balance, it may not be as significant a risk factor as confusion and urinary frequency, which directly impact the client's ability to safely navigate their environment.

D) A client who has osteoarthritis and uses a walker:
Although osteoarthritis and the use of a walker can contribute to mobility issues and an increased risk of falls, they may not present as immediate a risk as confusion and urinary frequency, which can lead to more unpredictable and hazardous situations.

A. Raise the bed to a comfortable height:
Raising the bed to a comfortable height is essential for proper body mechanics and preventing back strain. It ensures the nurse can perform the procedure efficiently and safely.

B. Stand on the left side of the bed:
While a left-handed nurse might prefer to stand on the left side for better access, this choice depends on the room layout and client position. Standing on the side where the nurse is most comfortable is essential, but it is not the primary action compared to ensuring proper bed height.

C. Raise the side rail on the working side of the bed:
Raising the side rail on the working side of the bed could obstruct the nurse's access to the client and is not generally recommended during procedures requiring close access to the client.

D. Use the non-dominant hand to insert the catheter:
The dominant hand, in this case, the left hand, should be used to insert the catheter for better control and precision. The non-dominant hand is typically used to hold the genitalia and provide stability.