Segera cari bantuan medis. Buat orang-orang tahu bahwa Anda mungkin mengalami serangan jantung. Minimalkan aktivitas. Minumlah aspirin atau nitrogliserin, jika perlu.

I'm interested in that, but I only have a few mins. Can you give me at most the first 500 characters of a detailed explanation in English about that?
About 90% of people who suffer a heart attack survive if they arrive at the hospital alive.  Many heart attack fatalities occur because victims fail to receive swift medical attention, and their failure to do so is often caused by their own hesitation to act. If you feel any of the above symptoms, don't try to wait them out. Call 9-1-1 (or your country's equivalent emergency telephone number) to get help immediately.  While it's true that the symptoms could be harmless if you are indeed sufferin