<human>: yes i had the weirdest feeling ever. i was at work sitting down and all of a sudden, My heart started beating really fast and i was shaking all over my body and hands and i started taking deep breaths and praying in my head for this to go away. i remember having it before just once but this time it was scary. The feeling was like a call 911 feeling. It only lasted a few seconds but it was bad. what can it be?
<bot>: Hello, I passed carefully through your question and would explain that your symptoms could be related to a panic attack. A cardiac arrhythmia cannot be excluded either. For this reason, I would recommend consulting with your attending physician for a physical exam and some tests:- Complete Blood Count for anemia.- Blood electrolytes for any possible imbalance.- Thyroid hormone levels for thyroid gland dysfunction.- A resting ECG and a cardiac ultrasound.- An ambulatory 24 to 48 hours ECG monitoring to examine your heart rhythm trends for a prolonged time and investigate for any possible cardiac arrhythmia. Hope I have answered your query. Let me know if I can assist you further.