Hello docs. My doctor suggested me to keep monitoring your bp. I am using digital omron bp machine at home. And check bp twice daily. Now I want to ask you is it reliable. I have heard that whatever reading comes on omron bp machine we should do minus (-)10 to that reading both systolic n diastolic. For eg if it comes 130/80 we should cut 10 degree. And actual reading is 120/70. Is it really so. Someone told me no you should do +20 to both systolic n diastolic pressure. On omron machine. Plzzz help me docs. As you r all experienced. Which one is correct. (-10) or (+ 20) to the reading. Im really worried my bp comes 110/82 always on omron.