Correct Answer: A

Rationale: The correct answer is A: Flattened T waves on the ECG. Flattened T waves are an early indicator of hypokalemia on an ECG. Choice B, Elevated ST segments, is not typically seen in hypokalemia but can be a sign of myocardial infarction. Choice C, Widened QRS complex, is more commonly associated with hyperkalemia. Choice D, Prominent U waves, is typically associated with hypokalemia, but flattened T waves are considered a more specific and early sign.

Correct Answer: A

Rationale: The correct answer is A: Irritability, confusion, restlessness. These are common signs of Increased Intracranial Pressure (IICP) as they result from the increased pressure on brain tissue. Choices B, C, and D are incorrect. Fatigue and shortness of breath (SOB) are not typical symptoms of IICP. Changes in pupillary response can be seen in other conditions but are not specific to IICP. Elevated blood pressure is not a common sign of IICP.

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: The correct answer is to administer sublingual nitroglycerin. This intervention is a priority for a patient with possible acute coronary syndrome because nitroglycerin helps vasodilate coronary arteries, increase blood flow to the heart muscle, relieve chest pain, and reduce cardiac workload. Obtaining cardiac enzymes (choice B) is important for diagnosing myocardial infarction but is not the initial priority. Getting IV access (choice C) is essential for medication administration and fluid resuscitation but is not the priority over administering nitroglycerin. Auscultating heart sounds (choice D) is a routine assessment but does not address the immediate need to relieve chest pain and improve blood flow to the heart in acute coronary syndrome.

Correct Answer: A

Rationale: The correct answer is A: Flattened T waves on the ECG. Flattened T waves are an early indicator of hypokalemia on an ECG. Choice B, Elevated ST segments, is not typically seen in hypokalemia but can be a sign of myocardial infarction. Choice C, Widened QRS complex, is more commonly associated with hyperkalemia. Choice D, Prominent U waves, is typically associated with hypokalemia, but flattened T waves are considered a more specific and early sign.