The nurse auscultates a client's heart sounds and hears a midsystolic click associated with mitral valve prolapse. Which diagnostic test should the nurse prepare the client to expect the healthcare provider (HCP) to prescribe?

A. Low-density lipoproteins (LDL) 185 mg/dL (4.79 mmol/L): This LDL value is significantly above the recommended level for a client with a history of myocardial infarction. Elevated LDL contributes to atherosclerotic plaque formation and increases the risk of further cardiac events.

B. Triglycerides 155 mg/dL (1.75 mmol/L): Although this value is at the higher end of the normal range, it is still within acceptable limits. While elevated triglycerides are a cardiovascular risk factor, this level alone does not require urgent follow-up.

C. Lipase 50 units/L (0.83 μkat/L): This lipase level is well within the normal range and is not relevant to cardiac health. Lipase is typically used to evaluate pancreatic function and has no direct bearing on post-myocardial infarction follow-up.

D. High-density lipoproteins (HDL) 60 mg/dL (1.55 mmol/L): This HDL value is above the recommended minimum and is actually considered protective against heart disease. No follow-up is needed for this value, as it reflects favorable cardiovascular risk status.

• Myocardial infarction (MI): The client reports chest pain rated 8/10, radiating to the left arm, and has ST segment elevation on ECG. These findings are classic for ST-elevation myocardial infarction (STEMI), requiring immediate intervention.
• Draw laboratory cardiac markers: Troponin and other cardiac enzymes are critical for confirming myocardial injury. They help guide diagnosis, treatment, and monitoring of MI progression or resolution.
• Insert two peripheral IV (PIV) access devices: Dual IV access ensures reliable and rapid administration of emergency medications, fluids, or thrombolytics. This is vital for stabilizing the client during acute cardiac events.
• Pain level: Ongoing pain assessment is essential for monitoring myocardial ischemia, evaluating treatment response, and guiding further interventions to prevent cardiac tissue damage.
• 12-lead electrocardiogram (ECG): Continuous or repeated ECGs help detect changes in ST segments, arrhythmias, or infarct progression. It’s crucial in monitoring the effectiveness of interventions and early detection of complications.

• Reflux: While reflux may cause chest discomfort, it is not associated with ST elevation or arm radiation. These findings are cardiac in nature and point away from gastrointestinal causes.
• Costochondritis: This musculoskeletal condition causes localized chest pain but does not result in ECG changes or radiating pain. It is not supported by the client's data.
• Atrial fibrillation (A-fib): The client has a normal heart rate and regular rhythm. A-fib would show an irregular rhythm on ECG, not ST elevation, and is not the suspected diagnosis here.
• Insert nasogastric tube (NGT) for nutritional intake: An NGT is not a priority for a client with acute chest pain. The focus should be on stabilizing cardiac function rather than nutritional support.
• Consult nutritionist: Nutritional counseling may be relevant later, but it is not an acute intervention during a suspected myocardial infarction.
• Begin strict bedrest: While activity should be limited, “strict bedrest” is not always necessary and may lead to complications like DVT. The client’s mobility orders depend on cardiac stability.
• Intake and output: While important in general care, it is not as immediately critical in early MI management as pain and ECG monitoring.
• Nutritional intake: Nutritional monitoring is not an immediate priority during acute chest pain evaluation and cardiac stabilization.
• Peripheral edema: Edema may indicate chronic heart failure, but it is not a key indicator for acute myocardial infarction or urgent follow-up in this scenario.