My father (age) has some stone in gall bedder largest one is 9.9 mm we visited to hospital for surgery during check up doctor found High BP 180 and advised us go TMT test after taking TelmikindAM seven days after my father given TMT test result of TMT test is positive. Now surgeon telling us your father surgery is HIGH risk surgery. If you want surgery you need to fill high risk consent form. What you suggest my father surgery is good decision or not because my feeling no pain in gall bladder he did not had any symptom of gall stone.