can you please explain to me the left ventricle and O.S.A.? Why is it crucial to treat the L.V. if only mildly dysfunctional? Why is the L.M.C.A. so important? Can you please tell me why O.S.A. so important to treat if L.M.C.A. has a stent blocks up and a person has O.S.A.? Thankyou for your help, Jan. Dear Dr. I would love to talk/discuss all this with you, but I cannot pay you, I do not have the money and am not connected on the computer to pay. I am very sorry to have disturbed you, but were only aware of payment after typing everything into you - I literally thought it was for free. If you can assist me after me explaining this to you it would be greatly appreciated. Perhaps you can advise me of another contact that I could make, as I am very new to using a computer. Many thanks again, Jan.