The nurse monitors the client in the immediate hours following an anterior-lateral wall myocardial infarction for the development of:
a systolic murmur
ventricular dysrhythmias
a pericardial friction rub
renal insufficiency
The Correct Answer is B
A. A systolic murmur: A systolic murmur is often associated with valvular heart disease, particularly mitral regurgitation, which can sometimes result from papillary muscle dysfunction after a myocardial infarction. However, a systolic murmur is not a typical or immediate complication following an anterior-lateral wall MI. The focus in the early hours after an MI should be on more acute complications, such as dysrhythmias and hemodynamic stability, rather than a murmur, which may develop more gradually over time.
B. Ventricular dysrhythmias: Ventricular dysrhythmias are one of the most common and life-threatening complications in the immediate hours following an acute myocardial infarction (MI), especially with an anterior-lateral wall MI. These dysrhythmias occur due to the electrical disturbances caused by myocardial injury and ischemia. The heart muscle becomes more susceptible to abnormal electrical activity after the infarction, and monitoring for ventricular tachycardia or fibrillation is crucial. These arrhythmias can lead to sudden cardiac arrest, which is why they are a high priority for monitoring in the immediate post-MI period.
C. A pericardial friction rub: A pericardial friction rub is a sign of pericarditis, which can occur after an MI, particularly several days to a week later, rather than in the immediate post-MI period. While pericarditis is a possible complication of MI, it is less likely to present immediately after the infarction, especially in the first few hours. The nurse should monitor for pericarditis, but it is not as high a priority as dysrhythmias during the first hours after MI.
D. Renal insufficiency: While renal insufficiency can develop as a result of poor perfusion or shock following a myocardial infarction, it is not one of the most immediate or common complications to watch for in the first hours after an anterior-lateral MI. The primary concern in this acute phase is monitoring for cardiovascular complications, such as dysrhythmias, rather than renal function. Renal insufficiency would be a secondary concern, particularly if the patient is hypotensive or experiencing other signs of multi-organ involvement.
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Related Questions
Correct Answer is A
Explanation
A. Muscle rigidity and bradykinesia: Parkinson's disease (PD) is characterized by a combination of motor symptoms due to the degeneration of dopamine-producing neurons in the brain. The hallmark motor symptoms include muscle rigidity (stiffness of muscles, making movement difficult) and bradykinesia (slowness of movement). These symptoms are typically present early in the disease and can lead to difficulties with daily activities such as walking, speaking, and performing fine motor tasks. These two signs are primary indicators of Parkinson's disease.
B. Facial pain and ptosis: Facial pain and ptosis (drooping eyelids) are not typical symptoms of Parkinson's disease. PD can affect facial expression (resulting in a masked face), but it does not usually cause facial pain. Ptosis is more commonly seen in conditions like Horner's syndrome, myasthenia gravis, or as a side effect of medications, but it is not a hallmark symptom of Parkinson's disease.
C. Diarrhea and nausea: While gastrointestinal symptoms such as constipation can be seen in Parkinson's disease due to autonomic dysfunction and decreased gut motility, diarrhea and nausea are not typical primary symptoms. In fact, constipation is a more common issue in PD. Nausea could result from the use of medications like levodopa, but it is not a defining feature of the disease itself.
D. Ecchymosis and petechiae: Ecchymosis (bruising) and petechiae (small red or purple spots on the skin) are not characteristic of Parkinson's disease. These findings are more often associated with platelet disorders, bleeding disorders, or vascular conditions. While Parkinson's disease can involve complications like falls (which could lead to bruising), these are not direct symptoms of the disease itself. The primary symptoms involve motor and autonomic dysfunction.
Correct Answer is B
Explanation
A. Decrease in heart rate: While nitroglycerin can sometimes cause reflex tachycardia (an increase in heart rate) as a compensatory mechanism in response to a decrease in blood pressure, its primary effect is on reducing myocardial oxygen demand through vasodilation. Although heart rate may decrease in some situations due to improved perfusion or as a secondary response to pain relief, a decrease in heart rate is not the most reliable or immediate indicator of effectiveness in this context. The relief of chest pain is a more direct measure of the drug's impact.
B. Relief of chest pain: Nitroglycerin works by dilating blood vessels, which reduces myocardial oxygen demand and improves blood flow to the heart, particularly in cases of acute myocardial infarction (MI). The primary therapeutic goal is to relieve chest pain (angina) and reduce the workload of the heart. Monitoring for relief of chest pain is the most direct and important indicator of the medication's effectiveness. If the chest pain decreases or resolves, it suggests that the medication is helping to alleviate the ischemia caused by the MI.
C. Decrease in cardiac dysrhythmias: Nitroglycerin is not primarily used to treat dysrhythmias, although improved perfusion and reduced myocardial oxygen demand may indirectly reduce the occurrence of dysrhythmias in some cases. However, a decrease in dysrhythmias is not a primary goal of nitroglycerin therapy, and the nurse should not primarily monitor for this outcome. Any dysrhythmias should be managed with other specific interventions if needed.
D. Decrease in blood pressure: Nitroglycerin's vasodilatory effect does lead to a reduction in blood pressure, particularly in patients with high blood pressure or in the context of a myocardial infarction. However, excessive hypotension can be dangerous and may lead to inadequate perfusion of vital organs. The nurse must monitor blood pressure closely to avoid hypotension, but a decrease in blood pressure is not the main goal of therapy. The primary objective is to relieve the chest pain associated with the MI. If blood pressure drops too low, it may indicate a need to adjust the dose or discontinue the nitroglycerin.
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