A client is admitted to the Emergency Department (ED) with a suspected ST elevation myocardial infarction (STEMI) involving the inferior wall. The nurse anticipates that this client will be immediately scheduled for the cardiac catheterization laboratory. The goal of treatment is to:
Administer antiplatelet and anticoagulant medications to prevent further clot formation.
Relieve the blockage in the coronary artery and restore blood flow to the heart muscle.
Provide pain relief and initiate cardiac rehabilitation.
Stabilize the dient's blood pressure and administer thrombolytic therapy.
The Correct Answer is B
A) Administer antiplatelet and anticoagulant medications to prevent further clot formation:
While antiplatelet and anticoagulant medications are essential in the management of STEMI to reduce the risk of further clot formation, they are not the primary goal of treatment in the immediate phase. These medications are typically administered before or during the procedure (such as during cardiac catheterization) to prevent new clots, but the primary objective is to restore blood flow to the heart muscle through reperfusion therapy, either by angioplasty or thrombolytics.
B) Relieve the blockage in the coronary artery and restore blood flow to the heart muscle:
This is the primary goal of treatment in STEMI. The most urgent intervention for a client with an ST elevation myocardial infarction (STEMI) is to relieve the blockage in the coronary artery and restore blood flow to the ischemic heart muscle. This is typically achieved through percutaneous coronary intervention (PCI) via cardiac catheterization, which involves either angioplasty (ballooning the artery) or stent placement. Restoring blood flow as quickly as possible reduces the extent of myocardial damage, improves the prognosis, and prevents complications like heart failure.
C) Provide pain relief and initiate cardiac rehabilitation:
Pain relief is important in the initial management of STEMI, typically with nitroglycerin and opioids for chest pain. However, the immediate goal in the ED is to address the underlying cause of the chest pain, which is the blockage of blood flow. Cardiac rehabilitation, while essential for long-term recovery, is not the immediate goal of treatment during the acute phase of a STEMI. The primary focus should be on restoring circulation to the affected myocardium.
D) Stabilize the client's blood pressure and administer thrombolytic therapy:
Stabilizing the client’s blood pressure is important, especially if the client is hypotensive, but it is not the main treatment goal. Thrombolytic therapy (clot-busting medications) is an option if PCI is not available or if it needs to be done within a certain time frame; however, the current best practice in STEMI is to perform PCI as soon as possible. Thrombolytics are typically used when PCI is not immediately available, but the ideal treatment is to restore blood flow through catheterization in a timely manner, as it is more effective than thrombolytic therapy at re-opening the blocked artery.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. Sublingual nitroglycerin each day to prevent chest pain:
The statement about taking sublingual nitroglycerin daily is incorrect. Sublingual nitroglycerin is prescribed as needed for acute chest pain (angina) or for relieving chest discomfort associated with myocardial infarction (MI). It is not intended for daily use as a preventive measure. The client should be educated to use sublingual nitroglycerin only when experiencing chest pain, and if the pain persists or worsens, they should seek immediate medical help. Daily or routine use of nitroglycerin should be avoided unless specifically instructed by a healthcare provider. The client should also be educated about other preventive measures like long-acting nitrates if needed for chest pain prevention.
Explanation of other options:
B. Clopidogrel to prevent clots from forming:
This statement is correct. Clopidogrel (Plavix) is an antiplatelet medication commonly prescribed after a myocardial infarction to help prevent the formation of blood clots, which can reduce the risk of future cardiovascular events such as stroke or further heart attacks. It works by inhibiting platelets from clumping together, which is crucial in the post-MI period.
C. Atorvastatin at bedtime to reduce my cholesterol levels:
This statement is correct. Atorvastatin is a statin medication that is used to lower cholesterol levels, particularly LDL cholesterol (the "bad" cholesterol), which contributes to atherosclerosis and increases the risk of further heart problems. Statins are often prescribed after a myocardial infarction to help reduce the risk of future events. Taking atorvastatin at bedtime is also a common recommendation because cholesterol synthesis is higher during the night.
D. Metoprolol to decrease my heart's need for oxygen:
This statement is correct. Metoprolol is a beta-blocker that reduces the heart rate and blood pressure, which in turn lowers the heart's oxygen demand. After a myocardial infarction, beta-blockers like metoprolol are commonly prescribed to prevent further heart damage, reduce ischemia, and decrease the likelihood of arrhythmias. They help in the management of heart failure as well by improving the heart's efficiency.
Correct Answer is D
Explanation
A) Fluid bolus and IV heparin:
A fluid bolus and IV heparin may be used in certain cardiovascular conditions, such as hypotension or in the setting of acute coronary syndrome (ACS) to prevent clot formation. However, in this case, the client is experiencing chest pain with ST segment elevations, a sign of ongoing ischemia, which suggests that the problem may be related to inadequate blood flow to the heart. Fluid boluses could exacerbate the condition if the heart's function is compromised, and IV heparin alone would not address the root cause of the ischemia. Hence, this is not the most appropriate intervention at this time.
B) A medical prescription for a stat chest x-ray:
A chest x-ray would not be immediately indicated in this scenario. The client's symptoms of chest pain, diaphoresis, and ST segment elevations on the ECG are indicative of myocardial ischemia or infarction, not a respiratory or structural lung issue that would be visualized on an x-ray. The priority here is to address the myocardial ischemia, which could be due to a clot or reocclusion in the coronary artery. A stat chest x-ray would not address the underlying cardiac issue, so this is not the best choice.
C) Coronary artery bypass (CABG) surgery if there is no improvement in 12 hours:
While CABG is an option for clients with severe coronary artery disease, it is generally considered when PCI is not successful or when there are multiple blockages that cannot be stented. In this situation, since the client has just undergone PCI and is now experiencing signs of reocclusion (e.g., chest pain, ST segment elevations), a repeat PCI with thrombectomy or angioplasty is more appropriate and urgent. Waiting 12 hours would delay treatment and risk further myocardial damage. CABG would not be the first intervention after a failed PCI within hours of the procedure.
D) Repeat PCI with thrombectomy or angioplasty:
This is the most appropriate intervention. The client's symptoms (chest pain, diaphoresis, and ST segment elevations) are suggestive of reocclusion of the stented artery, a complication that can occur after PCI. Reocclusion can cause further myocardial ischemia and infarction. A repeat PCI with thrombectomy or angioplasty would aim to reopen the blocked artery and restore blood flow to the myocardium, which is the immediate priority in this situation. This intervention can help resolve the ischemia and prevent further damage to the heart muscle.
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