Final answer:
The first thing you should do is assess the patient's vital signs to gather important information about their condition.
Step-by-step explanation:
The first thing you should do after entering the room and being notified of a patient experiencing bradycardia is to assess the patient's vital signs. Bradycardia refers to a heart rate that is slower than normal, typically less than 60 beats per minute. You can assess the patient's heart rate by checking their pulse, listening to their heart sounds using a stethoscope, or looking at the monitor if it is available. By assessing the heart rate, you can gather important information about the patient's condition and determine the next steps in their care.