What should be the priority action when a patient is admitted with chest pain from acute coronary syndrome?

Correct Answer: A

Rationale: The correct answer is to administer sublingual nitroglycerin. This is the priority action in treating chest pain associated with acute coronary syndrome as it helps to dilate blood vessels, improve blood flow to the heart, and reduce cardiac tissue damage. Administering nitroglycerin is crucial in managing the symptoms and potential complications of acute coronary syndrome. Obtaining IV access (Choice B) is important for administering medications and fluids but does not address the immediate symptom of chest pain. Checking cardiac enzymes (Choice C) and administering aspirin (Choice D) are essential steps in the management of acute coronary syndrome, but they should follow the administration of nitroglycerin to address the immediate symptom and improve blood flow to the heart.

Correct Answer: A

Rationale: Correct Answer: A. Unrelieved pain, pallor, and pulselessness are classic signs of compartment syndrome that indicate inadequate blood flow to the affected area. These symptoms are crucial to monitor as they signify a medical emergency requiring immediate intervention. Choices B, C, and D are incorrect because they do not align with the typical manifestations of compartment syndrome. Localized redness and swelling may be present but are not the primary indicators. Fever and infection are also not specific to compartment syndrome, and muscle weakness and fatigue are not typically prominent symptoms of this condition.

Correct Answer: A

Rationale: The correct answer is A: CD4 T-cell count below 180 cells/mm3. In a patient with HIV, monitoring the CD4 T-cell count is crucial as it reflects the status of the immune system. A CD4 T-cell count below 200 cells/mm3 indicates severe immunocompromise and risk of opportunistic infections. Hemoglobin levels (choice B) are important for assessing anemia but do not directly reflect the immune status in HIV patients. Serum albumin levels (choice C) are indicators of nutritional status and inflammation, not specific to HIV disease progression. White blood cell count (choice D) may fluctuate due to various conditions and is not as specific as the CD4 T-cell count in assessing HIV progression.

Correct Answer: A

Rationale: When continuous bubbling is observed in the chest tube water seal chamber, the appropriate intervention is to tighten the connections of the chest tube system. This step helps address an air leak in the system, which could compromise its effectiveness. Choice B (Replace the chest tube system) is not the initial step and may be unnecessary if the issue can be resolved by tightening connections. Choice C (Clamp the chest tube) is incorrect as clamping the chest tube could lead to a dangerous increase in pressure within the system. Choice D (Continue monitoring the chest tube) is also not the best immediate action to take when continuous bubbling is present, as prompt intervention is needed to prevent complications.

Correct Answer: A

Rationale: Flattened T waves are the classic ECG finding in hypokalemia. Hypokalemia primarily affects the repolarization phase of the cardiac action potential, leading to T wave abnormalities. While prominent U waves are typically associated with hypokalemia as well, flattened T waves are the most specific and sensitive ECG abnormality seen in hypokalemia. Elevated ST segments and wide QRS complexes are not typically seen in hypokalemia and are more indicative of other electrolyte imbalances or cardiac conditions.