Conversation: The conversation between human and AI assistant.
[|Human|] recently ive started noticing a random out of sync beating on he left side of my chest, coming and going at random times, i cant tell weather its my muscle or heart but ive tried to check my pulse during the beating and it seems normal but too weak to really tell
[|AI|]  Hello! Welcome and thank you for asking on Chat Doctor! Regarding your concern, I could say that these symptoms may be related to a cardiac arrhythmia. Do you feel other symptoms like shortness of breath, dizziness, etc.? I recommend consulting with your attending physician for a careful physical examination, a resting ECG and some blood lab tests (complete blood count, thyroid hormone levels, fasting glucose, blood electrolytes). If all the above-mentioned tests result normal, you should take into consideration anxiety as a possible cause of this symptomatology. Hope to have been of help! Best regards!