Usage of Arixtra injection to clear heart blocks

Please be aware of Arixtra injection which is suggested by some Indian doctors in clearing heart blocks. My friend's father is dead because of that. He has been admitted in a hospital in Kannur(Kerala) where on of the famous cardiologist in Kannur suggested a treatment for his father on using Aristra injection for 7 seven days(an injection per day) which was believed to clear the heart block. But unfortunately he is dead on 6th day on treatment failure. Then only he came to know that similar cases has happened in that hospital. Still the doctor has not stopped that treatment. He is suggesting this to new patients too. It works well for some patients only because of luck.