Final answer:
The appropriate course of action would be to assess the patient's response to the ventricular bigeminy(option d).
Step-by-step explanation:
In the given scenario, the ECG monitor of a patient in the cardiac care unit after a myocardial infarction (MI) indicates ventricular bigeminy with a rate of 50 beats/minute. Based on this information, the appropriate course of action would be to assess the patient's response to the dysrhythmia.
Ventricular bigeminy is a dysrhythmia characterized by an irregular heart rhythm in which every other beat originates from the ventricles. In this case, there are alternate beats originating from the ventricles, resulting in a heart rate of 50 beats/minute.
Since the patient is stable and not in immediate danger, no immediate interventions such as defibrillation or medication administration are necessary. However, it is important to monitor the patient closely and assess their response to the dysrhythmia to determine if further intervention or treatment is required(option d).