A nurse is caring for a client brought to the emergency room with acute chest pain. The client is being worked up for possible acute myocardial infarction (MI). The client asks why blood is being drawn for cardiac enzymes. What should the nurse explain to the client regarding why the cardiac enzyme troponin is being collected?
"These tests will enable the provider to determine the heart structure and mobility of the heart valves."
"Cardiac enzymes assist in diagnosing the presence of congestive heart failure."
"Cardiac enzymes like troponin shows there has been damage to the heart tissues and muscle."
"Cardiac enzymes will identify the exact location of the MI."
The Correct Answer is C
A) "These tests will enable the provider to determine the heart structure and mobility of the heart valves." This statement is incorrect because cardiac enzyme tests, including troponin levels, do not assess heart structure or valve mobility. Imaging studies like echocardiograms are typically used for evaluating heart structure and function.
B) "Cardiac enzymes assist in diagnosing the presence of congestive heart failure." While cardiac enzymes can provide some information about heart function, they are not specifically used to diagnose congestive heart failure. The primary role of cardiac enzymes, particularly troponin, is in diagnosing myocardial injury, such as an acute myocardial infarction.
C) "Cardiac enzymes like troponin shows there has been damage to the heart tissues and muscle." This statement accurately reflects the purpose of measuring troponin levels. Troponin is a protein released into the bloodstream when heart muscle cells are damaged, making it a crucial biomarker for diagnosing an acute myocardial infarction.
D) "Cardiac enzymes will identify the exact location of the MI." This statement is misleading. While troponin levels can indicate that damage has occurred, they do not provide information about the specific location of the myocardial infarction. Other imaging techniques, such as an angiogram, are needed to determine the exact location of blockages or damage.
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Correct Answer is C
Explanation
A) Increase of high-density lipoproteins: While higher levels of high-density lipoproteins (HDL) are generally associated with a lower risk of cardiovascular disease, enalapril is not primarily used to target lipid levels. Its main purpose is to manage blood pressure and reduce the risk of heart failure and renal complications, rather than specifically affecting HDL levels.
B) Decreased pain from intermittent claudication: Intermittent claudication is typically related to peripheral artery disease, which may not be directly improved by enalapril. While managing blood pressure can indirectly benefit circulation, enalapril is not indicated specifically for alleviating pain associated with claudication.
C) Decreased blood pressure: Enalapril is an ACE inhibitor used primarily to treat hypertension. A significant decrease in blood pressure is a direct therapeutic effect of the medication, indicating that it is effectively managing the client’s condition. Monitoring blood pressure helps assess the medication's efficacy in achieving the desired therapeutic outcome.
D) Decrease in low-density lipoproteins: Although reducing low-density lipoprotein (LDL) levels can benefit cardiovascular health, enalapril is not primarily prescribed for this purpose. Its effects on lipid levels are minimal compared to its role in lowering blood pressure and protecting renal function, making a decrease in LDL levels an irrelevant indicator of its therapeutic effect.
Correct Answer is D
Explanation
A. Low fat diet: While a low-fat diet can be beneficial for overall cardiovascular health, it is not the most critical intervention for a client with Buerger's Disease. The primary concern is addressing the underlying causes of the disease rather than just dietary modifications.
B. Blood glucose control: This is important for clients with diabetes but is not specific to Buerger's Disease. Effective management of blood glucose levels does not directly address the primary issues associated with this condition.
C. Blood pressure control: Managing blood pressure is important for overall cardiovascular health; however, it is not the most immediate concern for a client with Buerger's Disease compared to smoking cessation.
D. Smoking cessation: This is the most critical intervention. Buerger's Disease is strongly associated with tobacco use, and smoking cessation is essential to halt the progression of the disease and improve symptoms. Educating the client about the importance of quitting smoking can lead to significant improvements in their condition and overall vascular health.