Correct Answer: C

Rationale: Crackles in the lungs are a classic sign of fluid volume overload. When there is an excess of fluid in the lungs, it can manifest as crackling sounds upon auscultation. This finding indicates the accumulation of fluid in the alveoli and interstitial spaces of the lungs, which is a common manifestation of fluid volume overload.

Correct Answer: B

Rationale: The correct answer is B because increasing the intake of fresh fruits and vegetables can help manage blood pressure. These foods are rich in nutrients like potassium, fiber, and antioxidants, which are beneficial for individuals with hypertension. Dairy products are usually high in saturated fats, which can be detrimental to blood pressure control. Whole grains are generally recommended for their health benefits, including maintaining a healthy weight and heart health. Red meat is often high in saturated fats and can contribute to high blood pressure and other cardiovascular risks.

Correct Answer: D

Rationale: Opening sterile supplies before donning sterile gloves is a critical step in maintaining the sterility of the supplies during a dressing change procedure. By doing so, the healthcare professional ensures that they do not touch non-sterile surfaces with their hands once sterile gloves are worn, reducing the risk of introducing pathogens to the wound and minimizing the potential for contamination.

Correct Answer: A

Rationale: Placing a pillow between the client's legs is crucial post hip arthroplasty surgery to prevent hip dislocation. This intervention helps maintain proper alignment and prevents legs from crossing midline, reducing the risk of hip prosthesis dislocation. Elevating the head of the bed to 45 degrees, positioning the client on the operative side, or keeping the client's legs adducted are not recommended postoperative interventions for a total hip arthroplasty, as they can increase the risk of complications and compromise the surgical site.

Correct Answer: B

Rationale: When using a cane, it is crucial to move the cane forward first to provide support and enhance balance. Advancing the cane before the weaker or stronger leg helps widen the base of support, thereby improving stability during ambulation. Keeping the cane too far or too close to the body can affect its supportive function. Moreover, utilizing the cane solely for stair climbing limits its overall utility in maintaining balance and stability during regular walking.