HESI LPN
HESI Test Bank Medical Surgical Nursing
1. A client who had surgery yesterday is becoming increasingly anxious. The client’s respiratory rate has increased to 38 breaths/minute. The client has a nasogastric tube to low intermittent suction with 500 ml of yellow-green drainage over the last four hours. The client's arterial blood gases (ABGs) indicate a decreased CO2 and an increased serum pH. Which serum laboratory value should the nurse monitor first?
- A. Electrolytes.
- B. Creatinine.
- C. Blood urea nitrogen.
- D. Glucose.
Correct answer: A
Rationale: The correct answer is A, Electrolytes. In this scenario, the client is at risk for metabolic alkalosis due to the loss of gastric secretions through the nasogastric tube. Monitoring electrolytes is crucial to assess the levels of sodium, potassium, chloride, and bicarbonate, which are important in maintaining the acid-base balance of the body. Changes in these electrolyte levels can provide valuable information about the client's fluid status and acid-base balance. Creatinine, blood urea nitrogen, and glucose levels are important parameters to monitor in different situations but are not the priority in this case of potential metabolic alkalosis.
2. Following a bout of diarrhea, which foods should be offered to the school-age child?
- A. Apricots and peaches
- B. Chocolate milk
- C. Applesauce and milk
- D. Bananas and rice
Correct answer: D
Rationale: After rehydration, it is important to offer foods that are nonirritating to the bowel to the child. Bananas and rice are considered the best options as they are least likely to irritate the gastrointestinal tract. Apricots, peaches, and applesauce are fruits that may cause GI irritation, while milk, including chocolate milk, can also be irritating to the bowel. Therefore, the optimal choice for a child recovering from diarrhea would be bananas and rice.
3. A male client with acquired immune deficiency syndrome (AIDS) and Pneumocystis carinii pneumonia has a CD4+ T cell count of 200 cells/microliter. The client asks the nurse why he keeps getting these massive infections. Which pathophysiologic mechanism should the nurse describe in response to the client's question?
- A. Bone marrow suppression of white blood cells causes insufficient cells to phagocytize organisms.
- B. Exposure to multiple environmental infectious agents overburdens the immune system until it fails.
- C. The humoral immune response lacks B cells that form antibodies and opportunistic infections result.
- D. Inadequate numbers of T lymphocytes are available to initiate cellular immunity and macrophages.
Correct answer: D
Rationale: With a CD4+ T cell count of 200 cells/microliter, the client's immune system is severely compromised, leading to opportunistic infections.
4. While changing the dressing of a client with a leg ulcer, the nurse observes a red, tender, and swollen wound at the site of the lesion. Before reporting this finding to the healthcare provider, the nurse should note which of the client’s laboratory values?
- A. Neutrophil count.
- B. Hematocrit.
- C. Blood pH.
- D. Serum potassium and sodium.
Correct answer: A
Rationale: The correct answer is A: Neutrophil count. Neutrophil count helps assess for infection, which is indicated by the redness, tenderness, and swelling of the wound. Elevated neutrophil count is a common sign of bacterial infection. Hematocrit (choice B) measures the proportion of blood volume that is occupied by red blood cells and is not directly related to wound infection. Blood pH (choice C) and serum potassium and sodium (choice D) are important for assessing acid-base balance and electrolyte levels but are not the primary indicators of wound infection.
5. A client with chronic kidney disease is advised to follow a low-phosphorus diet. Which food should the client avoid?
- A. Milk
- B. Apples
- C. Carrots
- D. Rice
Correct answer: A
Rationale: Correct Answer: Milk. Milk is high in phosphorus and should be avoided in a low-phosphorus diet for clients with chronic kidney disease. Choice B (Apples), C (Carrots), and D (Rice) are not significant sources of phosphorus and can be included in moderation in a low-phosphorus diet. Apples and carrots are generally considered healthy choices for most individuals, while rice is a staple food that is low in phosphorus and can be part of a renal diet.
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