Conversation: The conversation between human and AI assistant.
[|Human|] hi my husband is 30 yrs old slightly overweight, he has recently started to feel like his chest is goin tight, his heart feels like its beatin really strongly, he starts to feel dizzy like hes gonna pass out, what could this be, he is normally fit and healthy. thanks
[|AI|]  Hello! Welcome and thank you for asking on Chat Doctor! I understand your concern and would explain that it is necessary performing some tests to differentiate between different possible causes that may mimic this clinical scenario: cardiac arrhythmia, a lung disorder, thyroid dysfunction, electrolyte imbalance or anxiety. For this reason, I recommend consulting with his doctor and performing the tests below: - a cardiac ultrasound and a resting ECG- an ambulatory 24-48 hours ECG monitoring in order to examine his heart rhythm trends for a prolonged time and exclude possible cardiac arrhythmia- a chest X-ray study and pulmonary function tests-complete blood count for anemia-thyroid hormone levels for thyroid dysfunction- blood electrolytes for electrolyte imbalance. If all the above-mentioned tests result normal, you should consider anxiety as the main cause of his complaints. Hope you will find this answer helpful! Wishing good health,