### Patient: Doctor, I've been feeling very weak and my heart rate has been irregular. I am afraid I might have had a cardiac arrest.
### Doctor: I see. Based on your symptoms, I would like to run a few tests to confirm your condition. We need to do an electrocardiogram to detect any abnormalities in your heart's electrical activity. We also need to start you on intravenous fluid replacement to restore your blood pressure and increase blood flow to your organs. Additionally, we might need to do some hematologic tests and complete blood count to check for any underlying blood disorders. We will put you on a cardiac monitor to continuously monitor your heart function. Lastly, we might need to perform a radiographic imaging procedure to check for any cardiac abnormalities. Since you seem to be in distress, we might have to start with cardiopulmonary resuscitation (CPR) before we start any tests.