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 D
Explanation
A) Tachycardia: Propranolol is often used to manage tachycardia by reducing heart rate and controlling excessive adrenergic activity. Therefore, this diagnosis would not warrant clarification of the order; it is an appropriate use of the medication.
B) End-stage kidney failure: While caution is necessary when administering medications in clients with renal impairment, propranolol is primarily metabolized by the liver, and its use is not contraindicated in end-stage kidney failure. However, renal function can affect dosing, so monitoring would be important, but this diagnosis alone wouldn't require clarification.
C) Hypertension: Propranolol is commonly prescribed to manage hypertension, making this diagnosis a valid reason for the medication order. The use of propranolol in this context would not need clarification.
D) Asthma: Propranolol is a non-selective beta-blocker, which can cause bronchoconstriction and exacerbate asthma symptoms. This diagnosis would require the nurse to clarify the order, as beta-blockers are generally contraindicated in clients with asthma due to the risk of respiratory complications. If the client has reactive airway disease, an alternative medication should be considered.
Correct Answer is ["B","E"]
Explanation
A) Provide discharge instructions for a client who has a new skin graft: This task should not be delegated to an assistive personnel (AP) as it requires clinical judgment and knowledge about the specific care needs associated with a new skin graft. Discharge instructions must be provided by a qualified nurse.
B) Weigh a client who is on fluid restriction: This task can be delegated to an AP. Weighing a client is a straightforward procedure that does not require nursing judgment and is within the scope of practice for an AP.
C) Check a blood product with another nurse prior to administration: This task must be performed by a licensed nurse to ensure patient safety and compliance with protocols. Checking blood products requires knowledge of the client's specific needs and potential reactions.
D) Perform an admission assessment on a client: Admission assessments require nursing expertise and critical thinking. This task cannot be delegated to an AP, as it involves evaluating the client's condition and creating a care plan based on the assessment findings.
E) Ambulate an older adult client who has hypertension: This task can be delegated to an AP, provided the client is stable and there are no other complications. Assisting with ambulation is within the scope of practice for an AP, and it can help promote mobility and independence for the client.