Correct Answer: C

Rationale: Enuresis is a common symptom of urinary tract infections in school-age children. It is often a presenting symptom due to irritation of the bladder. Periorbital edema (Choice A) is more indicative of conditions like nephrotic syndrome or renal disorders. Decreased frequency of urination (Choice B) is not typically associated with urinary tract infections. Diarrhea (Choice D) is not a common symptom of urinary tract infections but may occur due to other reasons like gastrointestinal infections.

Correct Answer: A

Rationale: The correct answer is A: Platelet count. Platelet count helps assess clotting abnormalities that could cause petechiae and ecchymoses. Petechiae and ecchymoses are often associated with bleeding disorders, so it is crucial to evaluate the platelet count to determine if there is a deficiency in platelets. Choices B, C, and D are incorrect because potassium level, creatinine clearance, and prealbumin do not directly relate to assessing clotting abnormalities associated with petechiae and ecchymoses.

Correct Answer: A

Rationale: When a client in active labor has ruptured membranes, the priority action for the nurse is to apply a fetal heart rate monitor. This is crucial for continuous monitoring of the baby's heart rate and ensuring fetal well-being. Initiating fundal massage may be indicated for uterine atony after delivery, not for ruptured membranes during labor. Administering oxytocin IV could be appropriate in some cases to augment labor, but it is not the immediate priority after ruptured membranes. Inserting an indwelling urinary catheter is not necessary solely based on ruptured membranes; it may be indicated for specific situations like epidural anesthesia where the client cannot void.

Correct Answer: C

Rationale: The correct answer is C: Serum potassium. Furosemide is a potassium-wasting diuretic, meaning it can lead to potassium loss in the body. Monitoring serum potassium levels is crucial to evaluate the effectiveness of furosemide and prevent hypokalemia. Options A, B, and D are incorrect because furosemide does not directly affect sodium, glucose, or calcium levels in the same way it impacts potassium levels.

Correct Answer: C

Rationale: The correct first action for the nurse to take when preparing to administer packed RBCs is to check the client's identification using two identifiers. This step is crucial to ensure that the right blood is given to the right client, preventing any transfusion errors. Priming the IV tubing with dextrose 5% in water and administering the blood through a 22-gauge catheter are important steps but should come after confirming the client's identity. Ensuring the client's consent is on file is also important but is not the immediate priority when preparing to administer packed RBCs.