A patient with a history of chronic alcohol abuse has been admitted to the unit with cirrhosis. Upon review of the patient's laboratory test results, the nurse notes that the patient's ammonia level is elevated at 218 mcg/dL. What medication should the nurse prepare to administer?

Choice A reason:
Decreased afterload due to vasodilation is not the primary cause of hypotension in acute myocardial infarction. While vasodilation can lower blood pressure, in the context of MI, the more direct and significant cause of hypotension is the reduced cardiac contractility leading to decreased cardiac output. Vasodilation and afterload reduction are not the primary mechanisms in this scenario.

Choice B reason:
A rapid heart rate, or tachycardia, can contribute to hypotension by reducing the time for the heart to fill with blood between beats. However, in the context of an acute myocardial infarction, the primary issue is the heart's ability to contract effectively. Therefore, while a rapid heart rate might exacerbate the condition, it is not the main cause of hypotension.

Choice C reason:
Decreased cardiac contractility, resulting in decreased cardiac output, is the primary cause of hypotension in acute myocardial infarction. The damaged heart muscle cannot pump effectively, leading to reduced blood flow and low blood pressure. This is a direct consequence of the myocardial damage caused by the infarction, making this the correct answer.

Choice D reason:
Increased capillary permeability is not a primary cause of hypotension in acute myocardial infarction. This condition is more associated with inflammatory responses, sepsis, or allergic reactions. The main cause of hypotension in MI is related to the heart's reduced pumping ability.

Choice A reason:
An embolus is the term used to describe a detached blood clot or other material that travels through the bloodstream and can cause a blockage in a blood vessel. Emboli can be composed of blood clots, fat, air, or other substances, and they can lead to serious conditions like strokes or pulmonary embolisms when they obstruct blood flow.

Choice B reason:
A thrombus is a blood clot that forms in a blood vessel and remains at its site of origin. It does not refer to a clot that has detached and is traveling through the bloodstream. The distinction between thrombus and embolus is crucial in understanding and describing vascular conditions.

Choice C reason:
Thromboembolus is a term that combines thrombus and embolus, indicating that a thrombus has become an embolus. While accurate, the more precise and commonly used term for a detached blood clot is simply "embolus."

Choice D reason:
Infarction refers to tissue death due to a lack of blood supply, often caused by an embolus or thrombus blocking a blood vessel. It does not describe the detached blood clot itself but rather the result of its action.