HESI LPN
CAT Exam Practice Test
1. While caring for a client with bilateral chest tubes, the bubbling in the water-seal chamber of the right chest tube stops. What action is most important for the nurse to take?
- A. Check the chest tube connections to the water-seal container
- B. Replace the water-seal collection container
- C. Increase the amount of wall suction connected to the right chest tube
- D. Milk the tubing connected to the right chest tube
Correct answer: A
Rationale: The most important action for the nurse to take when the bubbling in the water-seal chamber of the right chest tube stops is to check the chest tube connections to the water-seal container. This is crucial to ensure there are no disconnections or leaks affecting the bubbling. Replacing the water-seal collection container (choice B) is not necessary unless there is a malfunction; increasing suction (choice C) without assessing the connections can be harmful, and 'milking' the tubing (choice D) is an inappropriate action that can cause damage to the system.
2. Which type of Leukocyte is involved with allergic responses and the destruction of parasitic worms?
- A. Neutrophils
- B. Lymphocytes
- C. Eosinophils
- D. Monocytes
Correct answer: C
Rationale: Eosinophils are the correct answer. Eosinophils are specialized white blood cells that play a crucial role in allergic responses and combating parasitic infections. They release substances to destroy parasites and modulate allergic reactions. Neutrophils (Choice A) are mainly involved in fighting bacterial infections. Lymphocytes (Choice B) play a key role in the immune response, including antibody production, but are not primarily responsible for combating parasites or allergic responses. Monocytes (Choice D) are involved in immune defense, differentiating into macrophages or dendritic cells, but they are not mainly associated with allergic responses or parasitic worm destruction.
3. The nurse is assessing a 3-month-old infant who had a pylorotomy yesterday. This child should be medicated for pain based on which finding?
- A. Restlessness
- B. Clenched Fist
- C. Increased pulse rate
- D. Increased respiratory rate
Correct answer: A
Rationale: In infants, restlessness can be a significant indicator of discomfort or pain, necessitating appropriate pain management. While choices B, C, and D can also be associated with pain, restlessness is a more general and reliable indicator in this scenario. A clenched fist might indicate pain or distress, but it is not as specific as restlessness in assessing pain in infants. Increased pulse rate and respiratory rate can be influenced by various factors other than pain, making them less reliable indicators of pain in this context.
4. The charge nurse of a cardiac telemetry unit is assigning client care to a registered nurse (RN) and a practical nurse (PN). Which client should be assigned to the RN?
- A. One day after a permanent pacemaker insertion, a client's telemetry monitor shows a pacer rhythm.
- B. Two hours after undergoing cardioversion, a client's telemetry monitor shows a normal sinus rhythm.
- C. A client started on carvedilol the previous day for heart failure has controlled atrial fibrillation.
- D. Four hours after admission, a client with syncope shows complete heart block on the telemetry monitor.
Correct answer: D
Rationale: The correct answer is D because complete heart block is a critical condition that requires immediate assessment and management by a registered nurse (RN). In complete heart block, there is a significant conduction disturbance that can lead to serious complications. The RN is better equipped to handle such complex and potentially life-threatening situations. Choices A, B, and C involve less critical conditions that can be managed by a practical nurse (PN) under the supervision of the RN. Therefore, assigning the client with complete heart block to the RN ensures prompt and appropriate intervention.
5. Following a thyroidectomy, a client experiences tetany. The nurse should expect to administer which intravenous medication?
- A. Sodium iodide solution
- B. Levothyroxine sodium (Synthroid)
- C. Calcium gluconate
- D. Propranolol (Inderal)
Correct answer: C
Rationale: Following a thyroidectomy, tetany can occur due to hypoparathyroidism, leading to low calcium levels. Therefore, the nurse should administer calcium gluconate intravenously to raise the calcium levels. Choice A, Sodium iodide solution, is incorrect as it is used for thyroid conditions, not for treating tetany. Choice B, Levothyroxine sodium (Synthroid), is incorrect as it is a thyroid hormone replacement and does not address low calcium levels. Choice D, Propranolol (Inderal), is incorrect as it is a beta-blocker used for conditions like hypertension and not indicated for tetany after thyroidectomy.
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