Can you take betaloc when your heart rate is too fast during physical examination?

It will not affect the indexes of ECG, but it will cause hypotension, and the heart rate will easily drop to 50 beats. People with normal heart rate are generally normal at 60- 100. Don't be too nervous. Sit for a few minutes before the examination to relax, and the heart rate will generally slow down. If you must take betaloc, 1/4 or half a tablet is enough.