Hello Recently i have checked my mother's blood pressure. In left hand it is 123/81 and in right hand it is 136/89.I am worried about the difference of bp between both hands. I have checked her bp continuously for last 10 days both morning and evening and took average after measuring 3 times.The systolic difference is always between 10-15 and diastolic difference is with in 10. Is it dangerous? She is 60 years old having height 5'1" and weight 70kg.she is hypertensive for almost last 10 years. Recently doctor changed her medicine from Telma-80 to olmetime-40.