Hi doctor! During the day I have 4-5 times my heart convulsion (vibration), in 2-3 seconds then it goes away, feeling scared and then feeling tired. My blood pressure dropped to 10 degrees 3 years ago, after I was overworked. Right now my blood pressure is still 10 degrees. I went to Saigon to check, measure the ECG and the results of sinus bradycardia. Thanks to the doctor for treatment advice, thanks!