NCLEX-RN
NCLEX RN Free Practice Questions Questions
Extract:
Question 1 of 5
Stat serum electrolytes ordered for a client in acute renal failure revealed a serum potassium level of 6.4. The physician is immediately notified and orders 50 mL of dextrose and 10 U of regular insulin IV push. The nurse administering these drugs knows the rationale for this therapy is to:
Correct Answer: D
Rationale: Sodium polystyrene sulfonate (Kayexalate), a cation exchange resin, exchanges sodium ions for potassium ions in the large intestine reducing the serum potassium. Calcium is administered to protect the myocardium from the adverse effects of hyperkalemia. Serum levels reflect hyperkalemia. Rapid catabolism releases potassium from the body tissue into the bloodstream. Infection and hyperthermia increase the process of catabolism. The administration of dextrose and regular insulin IV forces potassium back into the cells decreasing the potassium in the serum.
Question 2 of 5
Which measure helps reduce nipple soreness associated with breastfeeding?
Correct Answer: B
Rationale: Breaking suction by placing a finger between the baby’s mouth and the breast prevents trauma to the nipple, reducing soreness. Feeding early promotes latch but doesn’t address soreness directly, warm soaks may increase inflammation, and a bra supports but doesn’t prevent nipple trauma.
Question 3 of 5
The orthopedic nurse should be particularly alert for a fat embolus in which of the following clients having the greatest risk for this complication after a fracture?
Correct Answer: C
Rationale: Fat embolus is most common in long bone fractures, especially the femur, and in young adults. A 21-year-old with a femur fracture (
C) is at highest risk. Fibula (
A), wrist (
B), and arm (
D) fractures have lower risk.
Question 4 of 5
A newborn weighed seven pounds at birth. At six months of age, the infant could be expected to weigh:
Correct Answer: A
Rationale: Infants typically double their birth weight by 6 months. A 7-pound newborn would weigh approximately 14 pounds at 6 months. The other weights are excessive or unrealistic.
Question 5 of 5
Diabetes during pregnancy requires tight metabolic control of glucose levels to prevent perinatal mortality. When evaluating the pregnant client, the nurse knows the recommended serum glucose range during pregnancy is:
Correct Answer: A
Rationale: The recommended range is 70-120 mg/dL to reduce the risk of perinatal mortality. (B, C,
D) These levels are not recommended. The higher the blood glucose, the worse the prognosis for the fetus. Hypoglycemia can also have detrimental effects on the fetus.