Correct Answer: A

Rationale: The correct answer is to administer sublingual nitroglycerin. This is the priority action for a patient admitted with chest pain from acute coronary syndrome. Nitroglycerin helps dilate blood vessels, improve blood flow to the heart, and relieve chest pain. Checking the patient's urine output (Choice B) is not the priority in this situation. Administering IV fluids (Choice C) may not be necessary unless indicated by the patient's condition. Obtaining cardiac enzymes (Choice D) is important but is not the initial action needed to address the patient's acute symptoms.

Correct Answer: B

Rationale: When a patient experiences abdominal cramping during an enema administration, the nurse should lower the height of the enema solution container. Lowering the container helps to relieve cramping by slowing the flow of the solution, making it more comfortable for the patient. Increasing the flow (Choice A) would exacerbate the cramping. Stopping the procedure (Choice C) may not be necessary if adjusting the height resolves the issue. Removing the enema tubing (Choice D) is not the initial action indicated for cramping; adjusting the height is the more appropriate intervention.

Correct Answer: B

Rationale: Synchronized cardioversion is the correct electrical intervention for a patient with ventricular tachycardia and a pulse. This procedure delivers a synchronized electrical shock to the heart during a specific phase of the cardiac cycle, aiming to restore the heart's normal rhythm. Defibrillation (choice A) is used for pulseless ventricular tachycardia or ventricular fibrillation. Pacing (choice C) is typically used for bradycardias or certain types of heart blocks. Medication administration (choice D) may be used in some cases, but in the scenario of ventricular tachycardia with a pulse, synchronized cardioversion is the preferred intervention.

Correct Answer: A

Rationale: The correct answer is A: Flattened T waves on an ECG. Hypokalemia is characterized by flattened T waves on an ECG, which is an early indicator of low potassium levels. Elevated ST segments (Choice B) are associated with conditions like myocardial infarction, not hypokalemia. Prominent U waves (Choice C) are typically seen in hypokalemia, but flattened T waves are more specific. Bradycardia (Choice D) can be a manifestation of severe hypokalemia but is not as specific as flattened T waves on an ECG.

Correct Answer: A

Rationale: The correct answer is to administer nitroglycerin. Nitroglycerin is the priority intervention for a patient with possible acute coronary syndrome as it helps dilate blood vessels, reduce chest pain, and improve blood flow to the heart. This intervention is crucial in managing acute coronary syndrome and should be given promptly. Getting IV access may be necessary, but administering nitroglycerin takes precedence to alleviate symptoms and prevent further heart damage. Auscultating heart sounds and administering aspirin are important aspects of the assessment and treatment plan, but they are not the priority interventions in the acute phase of suspected acute coronary syndrome.