My 62 Years Brother Had Heart Attack On 27th February

my 62 years brother had heart attack on 27th february and now his heart is working 30 to 35 perscent ,his lad is blocked .dr did his angio graphy but still his lad is blocked .diabetic patient,1.6 greatinine,using medecine ,doctor advised him to com 18th for iability test,isit useful and out of danger for him,they want to reopen lad for stent,i am v worried is it a case of bypass,is he stable for treatment or can use only medecine
seema from pakistan 0000