The advanced practice registered nurse (APRN) is measuring the fundal height of a pregnant patient at 21 weeks gestation. To perform this assessment the APRN uses a tape measure and extends it from the pubic symphysis to which anatomical landmark?

Joint disorders in older adults can present with overlapping symptoms, but careful assessment of pattern, duration of stiffness, and joints involved helps differentiate inflammatory from degenerative conditions. Rheumatoid arthritis is a chronic systemic autoimmune disease that primarily affects synovial joints, leading to inflammation, pain, and progressive joint damage. It typically presents with symmetrical joint involvement, prolonged morning stiffness, and signs of active inflammation such as warmth and tenderness. Identifying these features is essential for early diagnosis and disease-modifying treatment.

Rationale:
A. Rheumatoid arthritis is the most likely cause because it presents with symmetrical joint involvement, prolonged morning stiffness lasting more than one hour, and inflammation of small joints such as the MCP and wrists. The presence of tender, warm joints indicates active synovitis due to autoimmune-mediated destruction of the synovial membrane. Although DIP joints are less commonly affected, the overall pattern of inflammatory, bilateral joint pain strongly supports RA.

B. Osteoarthritis typically involves degenerative changes in weight-bearing joints and commonly affects the DIP joints, but it is not associated with prolonged morning stiffness or significant warmth. Stiffness in OA is usually brief, lasting less than 30 minutes, and improves with activity. The presence of inflammatory signs such as warmth and prolonged stiffness makes OA less likely in this case.

C. Gouty arthritis usually presents as acute, episodic attacks of severe pain, often affecting a single joint such as the first metatarsophalangeal joint. It is characterized by redness, intense pain, and swelling rather than chronic bilateral involvement of wrists and MCP joints. The chronic, symmetrical pattern described in this patient is not typical of gout.

D. Trigger finger is a localized tendon disorder caused by stenosing tenosynovitis of the flexor tendon sheath, leading to locking or catching of a finger during movement. It does not cause systemic joint inflammation or symmetrical polyarticular pain. The presentation in this case involves multiple joints with inflammatory signs, making trigger finger an unlikely explanation.

Functional assessment in older adults evaluates their ability to perform tasks necessary for independent living and self-care. These abilities are categorized into basic activities of daily living (ADLs) and instrumental activities of daily living (IADLs). IADLs involve more complex skills required for managing a household and maintaining independence in the community. Conditions such as rheumatoid arthritis can significantly impair fine motor skills and joint function, affecting tasks like cooking and meal preparation.

Rationale:
A. Instrumental activities of daily living include complex tasks such as meal preparation, housekeeping, medication management, transportation, and financial management. Difficulty with meal preparation indicates impairment in these higher-level functional tasks. Severe rheumatoid arthritis can cause joint pain, stiffness, and deformities that interfere with hand function, making IADLs the appropriate classification.

B. Activities of daily living refer to basic self-care tasks such as bathing, dressing, toileting, transferring, and eating. While rheumatoid arthritis may eventually affect these abilities in severe cases, meal preparation is not classified under basic ADLs. Therefore, this option does not accurately reflect the described deficit.

C. Functional activities of daily living is not a standard classification term in clinical functional assessment frameworks. The recognized categories are basic ADLs and instrumental ADLs. Because this option is not a validated classification, it is not appropriate for documentation.

D. Independent activities of daily living is not a formal category used in functional assessment tools. While independence is the overall goal of care, it is not a distinct classification for documenting specific deficits. The correct established category for meal preparation difficulty is instrumental activities of daily living.