Final answer:
Upon the initial assessment of a client with arthritis, the nurse should primarily consider the pain level as it is a critical indicator of the severity of arthritis and impacts the client's functionality and quality of life.
Step-by-step explanation:
Clinical Assessment of Arthritis
When a nurse is initially assessing a client with arthritis, it is important to focus on symptoms that directly relate to the condition. These include joint pain, stiffness, swelling, and the limitation in the range of motion. Therefore, among the options provided:
- Blood group is typically not immediately relevant to arthritis and its symptoms.
- Anxiety level is not a primary concern during initial assessment, although it might be considered in a comprehensive care plan.
- Pain level is a crucial indicator of the severity of the arthritis and impacts the client's quality of life and ability to function.
- Glucose level may be relevant if the patient has a comorbid condition such as diabetes, but not specifically for the initial assessment of arthritis.
Therefore, the most appropriate option for the initial assessment of a client with arthritis is C) Pain level.