Correct Answer: A

Rationale: The correct first intervention for a patient admitted with unstable angina is to administer nitroglycerin. Nitroglycerin helps to relieve chest pain by dilating blood vessels and increasing blood flow to the heart, thereby reducing cardiac workload. This intervention aims to alleviate symptoms and prevent further cardiac damage. Obtaining cardiac enzymes (Choice B) is important for diagnosing a myocardial infarction but is not the initial intervention for unstable angina. Starting IV fluids (Choice C) may be indicated in specific cases like hypovolemia but is not the primary intervention for unstable angina. Monitoring for chest pain (Choice D) is essential but taking action to alleviate the pain, like administering nitroglycerin, is the primary focus in the initial management of unstable angina.

Correct Answer: A

Rationale: When a patient experiences abdominal cramping during enema administration, the nurse should lower the height of the enema solution container. This action helps relieve the cramping by slowing down the flow of the solution. Choice B, stopping the procedure and removing the tubing, is incorrect as it is too drastic and may not address the cramping. Choice C, continuing the enema at a slower rate, may exacerbate the cramping if the flow rate is still too high. Choice D, increasing the flow of the enema solution, would worsen the cramping and is not the appropriate intervention.

Correct Answer: A

Rationale: When a nurse administers insulin for a misread glucose level, they should monitor for hypoglycemia. Insulin lowers blood sugar levels, so the patient may experience hypoglycemia if given insulin unnecessarily. Monitoring for hypoglycemia involves observing for symptoms such as shakiness, sweating, dizziness, confusion, and palpitations. Choices B and C are incorrect because administering insulin for a misread glucose level would lower blood sugar levels, resulting in hypoglycemia, not hyperglycemia or hyperkalemia. Choice D is not the immediate priority; the focus should be on patient safety and monitoring for potential adverse effects of the unnecessary insulin.

Correct Answer: A

Rationale: The correct answer is A: Albuterol via nebulizer. Albuterol is the first-line treatment for wheezing caused by an allergic reaction as it quickly opens the airways, providing rapid relief. Choice B, Methylprednisolone 100 mg IV, is a systemic corticosteroid that may be used in severe cases to reduce inflammation but is not the initial treatment for acute wheezing. Choice C, Cromolyn 20 mg via nebulizer, is a mast cell stabilizer that is more commonly used for prophylaxis rather than acute relief in allergic conditions. Choice D, Aminophylline 500 mg IV, is a bronchodilator that is less commonly used now due to its narrow therapeutic window and potential for toxicity, making it less preferred than Albuterol for initial treatment of wheezing.

Correct Answer: A

Rationale: An escharotomy is a surgical incision made to release pressure in a part of the body that has a deep burn and excessive swelling. This procedure is crucial in preventing further damage due to restricted blood flow and compromised circulation. Choice B is incorrect because it describes debridement, which is the removal of dead tissue from wounds. Choice C is incorrect as it does not specifically address the purpose of relieving pressure in burn injuries. Choice D is incorrect as it describes a procedure more related to thoracentesis, which is the removal of excess fluid from the chest, typically the pleural space.