A nurse is teaching a group of clients about osteoarthritis. Which of the following recommendations should the nurse include in the teaching?

A. Use Echinacea to manage joint pain:
Echinacea is a natural supplement, but its effectiveness in managing joint pain related to osteoarthritis is not well-established. It's important for individuals to consult their healthcare provider before using any supplements, as they may interact with medications or have other adverse effects.

B. Maintain a recommended body weight.
Maintaining a healthy body weight is an important recommendation for managing osteoarthritis. Excess weight puts additional stress on weight-bearing joints, such as knees and hips, which can worsen osteoarthritis symptoms. Losing weight, if necessary, or maintaining a healthy weight can help reduce joint pain and improve mobility in individuals with osteoarthritis.

C. Apply ice to the joint before exercising:
Applying ice can help reduce inflammation and provide pain relief, but it's typically used after exercising or during acute flare-ups, not necessarily before exercising. Heat is often recommended before exercise to warm up the joint and improve flexibility.

D. Reduce the amount of purine in the diet:
This recommendation is more relevant for managing gout, a different type of arthritis caused by the buildup of uric acid crystals in the joints. Purine-rich foods can trigger gout attacks but are not directly related to osteoarthritis. Osteoarthritis is primarily related to wear and tear of the joints over time.

A. "Pyelonephritis increases a person's risk for kidney damage." - Pyelonephritis is a bacterial infection of the renal parenchyma and renal pelvis, typically caused by the ascent of bacteria from the lower urinary tract into the kidneys. If left untreated, it can lead to kidney damage, including scarring of the renal tissue and impaired kidney function.

B. "Pyelonephritis is an infection of the lower urinary tract." - This statement is incorrect. Pyelonephritis specifically involves the upper urinary tract, affecting the kidneys. In contrast, infections of the lower urinary tract (such as cystitis) affect the bladder and urethra.

C. "Pyelonephritis often causes no symptoms in affected clients." - This statement is incorrect. Pyelonephritis typically presents with symptoms such as fever, chills, flank pain, painful urination (dysuria), and frequent urination. Clients with pyelonephritis usually experience noticeable symptoms.

D. "Pyelonephritis is most often caused by Staphylococcus saprophyticus." - This statement is incorrect. While Staphylococcus saprophyticus is a common cause of urinary tract infections, pyelonephritis is more commonly caused by gram-negative bacteria, such as Escherichia coli, which often ascend from the lower urinary tract into the kidneys.