Conversation: The conversation between human and AI assistant.
[|Human|] I am 39 yr old female, have been working out regularly for nearly a year. Thus far, had successfully used treadmill and elliptical. However, today, after working with a personal trainer for the first time. I got extremely dizzy and everything literally went white and I couldnt hear much of what the trainer said for at least 15 min. I had to sit down immediately and thought I was going to black out. I was quite concerned as this has never happened before. My breathing was fine however, no wheezing, shortness of breath. Any ideas??? I am 5,5- 136lbs. Born with a heart murmur, otherwise no known heart concerns, issues.
[|AI|]  Thanks for your question on Chat Doctor. I can understand your concern. The way you have described that episode, possibility of transient ischemic attack (TIA) is more likely. Another possibility is cardiac event (you are already having heart murmur). So better to consult doctor and get done ECG, 2d echo, stress test and MRI brain. If all these are normal then no need to worry much. Hope I have solved your query. I will be happy to help you further. Wish you good health. Thanks.