A nurse is reinforcing teaching with a client who has kidney stones. Which of the following instructions should the nurse include.

Choice A rationale Restricting dietary calcium is generally not recommended for most patients with kidney stones unless specifically indicated. Paradoxically, low calcium intake can increase the absorption of dietary oxalates in the intestines, leading to higher urinary oxalate levels and an increased risk of calcium oxalate stone formation. Maintaining a normal calcium intake helps bind oxalates within the digestive tract, preventing them from entering the bloodstream and eventually being excreted into the urine where they crystallize. Choice B rationale Increasing fluid intake is a primary intervention for preventing nephrolithiasis, but 1 liter per day is insufficient. Most clinical guidelines recommend a daily fluid intake that maintains a urine output of at least 2 to 2.5 liters. High fluid volume dilutes the concentration of minerals and salts in the urine, such as calcium, oxalate, and uric acid, thereby reducing the likelihood of crystals precipitating and aggregating into solid stones within the renal pelvis. Choice C rationale Straining or filtering all urine is a critical instruction for patients with active or suspected kidney stones. This process allows for the collection of stone fragments or gravel that may be passed during micturition. Once captured, these specimens are sent for laboratory analysis to determine the exact chemical composition of the stone. Identifying whether a stone is composed of calcium oxalate, uric acid, or struvite is essential for tailoring effective long term dietary and pharmacological prevention. Choice D rationale Sugar sweetened beverages, particularly those containing high levels of fructose and phosphoric acid, are associated with an increased risk of kidney stone development. Fructose can increase the urinary excretion of calcium, oxalate, and uric acid, while also making the urine more acidic. These metabolic changes create an environment highly conducive to the crystallization of stone forming minerals. Patients should be encouraged to consume water or citrus based fluids which contain citrate to inhibit stone formation.