My brother is 65 years of age, under 200 lbs and about 5'10".  He has had bypass surgery and has a pacemaker/defibrilator.  He has had blood in his stool the past several days; yesterday also had blood in urine.  Blood is dark red; quite a bit he said.  No pain associated. he is headed to the ER; what could this be?
Hello, Almost all cardiac patients will be on blood thinner medication like Aspirin, clopidogrel, etc. A complication of blood thinners is bleeding cause blood in urine or stool or cough. A regular check of PT INR will help you prevent such complication. Hope I have answered your query. Let me know if I can assist you further. Take care Regards, Dr S.R.Raveendran, Sexologist