A nurse working in an emergency department is assessing a client who is experiencing chest pain that began 6 hr ago. Which of the following findings indicates that the client is having a myocardial Infarction?

Rationale for Correct Choices:

• Reye's syndrome: The toddler's worsening condition including vomiting, lethargy, and altered consciousness after a viral illness (influenza A) is consistent with Reye’s syndrome, which affects the liver and brain. The progression from mild viral symptoms to neurologic decline without respiratory compromise further supports this diagnosis.
• Aspirin administration: Giving aspirin during a viral illness in children is a well-known precipitant of Reye’s syndrome. The caregivers' report of alternating aspirin with acetaminophen confirms the exposure necessary to trigger the condition in a susceptible child.

Rationale for Incorrect Choices:

• Gastroenteritis: While vomiting is a feature of gastroenteritis, the absence of diarrhea and the presence of neurologic changes like lethargy and poor responsiveness make this unlikely. Additionally, the clear vomiting and lack of fluid intake without prior GI focus suggest another etiology.
• Bronchitis: Bronchitis typically causes a productive cough with wheezing, chest discomfort, and possible fever. This toddler's lungs are clear with a nonproductive cough, and neurologic signs are not typical of bronchitis.
• Acetaminophen administration: Acetaminophen is safe and commonly used to treat fever in toddlers. It is not associated with hepatic encephalopathy or neurologic complications seen in this scenario.
• Oseltamivir administration: Though oseltamivir may cause gastrointestinal side effects like nausea or vomiting, it does not explain the altered mental status and lethargy. It is also unlikely to cause such a significant clinical deterioration on its own.

Rationale for correct choices:

• Administer oxygen at 2 L/min via nasal cannula: The client's oxygen saturation has dropped to 92% on room air, indicating mild hypoxia. Supplemental oxygen should be administered to improve myocardial oxygenation and reduce ischemia while further interventions are being prepared.
• Administer sublingual nitroglycerin: Nitroglycerin is a first-line medication for chest pain caused by suspected myocardial ischemia. It promotes vasodilation, reduces myocardial oxygen demand, and provides symptom relief. Administering it promptly can help prevent further cardiac damage.

Rationale for incorrect choices:

• Request a prescription for an increase in statin medication: Although the client has hyperlipidemia, increasing the statin dose is not an immediate priority during an acute chest pain episode. Lipid management is important long-term but does not address the acute ischemic event.
• Prepare the client for cardiac catheterization: Cardiac catheterization may eventually be necessary, but it is not the nurse’s first action. The priority is to stabilize the client’s symptoms (oxygenation and pain) before preparing for any invasive diagnostic or therapeutic procedure.
• Check a STAT cardiac troponin: Troponin has already been obtained and is within normal limits at this point. While serial troponins may be needed later, immediate nursing priorities focus on symptom relief and oxygenation rather than repeating the test right away.
• Request a prescription for a beta-blocker: Beta-blockers may be used in the treatment of suspected myocardial infarction to reduce heart rate and myocardial oxygen demand. However, their initiation typically follows pain relief, oxygenation, and diagnostic confirmation, not as the first nursing action.