Dear Dr, my sister is 35 years female, 100kg s ,160cm s, she has had sleeve gastrectomy 3 months ago & lost 35 Kg s since that ( she was 135 Kg s) , but now she is complaining of continous dizziness & faintouts 1week ago , she went to the doctor &he told her that she has bradycardia! ( which he didn t know its couse after investigations) and now he tells her that she need pacemaker