A client with coronary artery disease (CAD) is admitted to the medical unit for testing. The client describes having had frequent episodes of angina over the last few days prior to admission. The client is now experiencing shortness of breath, nausea, and chest pressure. After obtaining the client's vital signs, which action should the nurse take next?

RationaleA. Troponin levels are cardiac biomarkers that are elevated in the blood when there is damage to the heart muscle, such as during a myocardial infarction (heart attack). Verifying the schedule for troponin assessments is important to monitor for myocardial damage and to guide treatment decisions.B. This action is aimed at creating a quiet and calm environment for the client, which can help reduce anxiety and minimize stimuli that might exacerbate symptoms. Creating a conducive environment is beneficial for the client's comfort and well-being but should not delay urgent interventions required for acute symptoms.C. PVCs are abnormal heartbeats that can occur in individuals with CAD and may indicate increased cardiac irritability or instability. While monitoring PVCs is important for assessing cardiac rhythm and potential complications, it is not the immediate priority over addressing acute symptoms such as shortness of breath, nausea, and chest pressure.D. Oxygen therapy is essential in the management of a client with suspected ACS to improve oxygenation and reduce cardiac workload. Maintaining oxygen saturation above 93% helps ensure adequate tissue oxygenation, especially during episodes of chest discomfort and potential myocardial ischemia.