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What should the nurse monitor for in a patient with hypokalemia?
- A. Monitor for muscle weakness
- B. Check deep tendon reflexes (DTRs)
- C. Monitor for seizures
- D. Monitor for bradycardia
Correct Answer: A
Rationale: The correct answer is to monitor for muscle weakness in a patient with hypokalemia. Hypokalemia, which is low potassium levels, can lead to muscle weakness due to its effects on neuromuscular function. Checking deep tendon reflexes (Choice B) is not typically associated with hypokalemia. Seizures (Choice C) are more commonly associated with low calcium levels rather than low potassium levels. Bradycardia (Choice D) is a symptom of hyperkalemia (high potassium levels) rather than hypokalemia.
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A nurse is administering insulin to a patient after misreading their glucose as 210 mg/dL instead of 120 mg/dL. What should the nurse monitor for?
- A. Monitor for hypoglycemia
- B. Monitor for hyperkalemia
- C. Administer glucose IV
- D. Document the incident
Correct Answer: A
Rationale: The correct answer is to monitor for hypoglycemia. Insulin administration based on a misread glucose level can lead to hypoglycemia due to the unnecessary lowering of blood sugar levels. Monitoring for hypoglycemia involves assessing the patient's blood glucose levels frequently, observing for signs and symptoms such as shakiness, confusion, sweating, and administering glucose if hypoglycemia occurs. Choice B, monitoring for hyperkalemia, is incorrect as insulin administration typically lowers potassium levels. Choice C, administering glucose IV, is not the immediate action needed as the patient could potentially develop hypoglycemia from the excess insulin. Choice D, documenting the incident, is important but not the immediate priority when dealing with a potential hypoglycemic event.
What are the expected changes on an ECG for a patient with hypokalemia?
- A. Flattened T waves
- B. Prominent U waves
- C. ST elevation
- D. Wide QRS complexes
Correct Answer: A
Rationale: Flattened T waves are an early sign of hypokalemia on an ECG. Hypokalemia primarily manifests as flattened T waves on an ECG. While prominent U waves can be seen in hypokalemia, they are not as specific as flattened T waves. ST elevation is more commonly associated with conditions like myocardial infarction rather than hypokalemia. Wide QRS complexes are typically not a feature of hypokalemia on an ECG.
What medication should be given first to a patient experiencing wheezing and coughing due to an allergic reaction?
- A. Albuterol 3 ml via nebulizer
- B. Cromolyn via nebulizer
- C. Aminophylline IV
- D. Methylprednisolone 100 mg IV
Correct Answer: A
Rationale: The correct answer is Albuterol 3 ml via nebulizer. Albuterol is a bronchodilator that helps relieve wheezing and coughing by opening up the airways, making it the first-line treatment for allergic reactions presenting with these symptoms. Cromolyn and aminophylline are not typically used as first-line treatments for acute allergic reactions with wheezing and coughing. Methylprednisolone, a corticosteroid, may be beneficial for inflammation in the setting of an allergic reaction but is not the initial medication of choice to address wheezing and coughing.
What does continuous bubbling in the water seal chamber of a chest tube indicate?
- A. An air leak
- B. A blocked chest tube
- C. Normal chest tube function
- D. Continuous drainage from the chest tube
Correct Answer: A
Rationale: Continuous bubbling in the water seal chamber of a chest tube indicates an air leak in the system. This occurs when air is entering the system through a leak, preventing the lung from fully re-expanding. Choice B, a blocked chest tube, is incorrect as a blocked tube would result in a lack of drainage rather than continuous bubbling. Choice C, normal chest tube function, is incorrect as continuous bubbling signifies an issue. Choice D, continuous drainage from the chest tube, is incorrect as bubbling in the water seal chamber specifically indicates an air leak, not just the presence of drainage.
What is the priority action for a patient with chest pain from acute coronary syndrome?
- A. Administer sublingual nitroglycerin
- B. Check the patient's cardiac enzymes
- C. Administer aspirin
- D. Obtain IV access
Correct Answer: A
Rationale: The correct answer is to administer sublingual nitroglycerin. This medication helps dilate the blood vessels, reducing the workload of the heart and improving blood flow to the heart muscle, which is crucial in the management of acute coronary syndrome. Checking cardiac enzymes (choice B) is important for diagnosing a heart attack but is not the priority over providing immediate relief to the patient's chest pain. Administering aspirin (choice C) is also important in acute coronary syndrome to prevent further clot formation, but it is not the priority action for immediate pain relief. Obtaining IV access (choice D) is necessary for administering medications or fluids; however, in this scenario, providing sublingual nitroglycerin for prompt pain relief takes precedence.