### instruction:
If you are a doctor, please answer the medical questions based on the patient's description.

### input:
SIR I M 60 YRS, 66 KGSHEIGHT 5. INCHESI NEVER HAD A HEART PROBLEM BUT WAS HIGH BP PAITENT FOR LAST 20 YRS & WAS TAKING BP TABLET EVERY DAY BEFOE B.FAST AS ADVISED BT DRS.I DO NOT SMOKE, DO NOT EAT FRIED OR SWEET DISHES. ON 24JAN11 ANGIOPLASTY WAS DONE & 4STENTS WERE PUT. WAS FEELING BETTER & YOUNGER. i STARTED EATING ONLY BOILED VEG & SOUPS ONLY. WENT REGULARLY FOR BRISK WALKING FOR OVER 40 MINTS IN THE MORNING & EVENINGS. TOOK ALL MEDICINES ON TIMESUDDENLY ON 03MAY I HAD A PROBLEM AND 1 STENT WAS PUT AGAIN IN MAIN VESSEL WHICH AS PER DR WAS BLOCKED MORE THAN 95%. WHAT MST BE THE REASON FOR THIS IN JUST OVER 3 MONTHS I HAD TO SEE DR FOR THE SAME PROBLEM?REGARDSASHOK-DELHI

### output:

Hi, I guess it happened while you were medicine, and you were well compliant with medicine. When stent is put in vessel there is inherent risk of blockages due to clot formation, its attack. Stent has basically opened your blocked arteries but no one can guarantee that you will not have repeat attack. Its like repeat attack in artificial vessel. This risk is highest in initial 1 year, later decreases. However, there are medicines to prevent it, which are not always cent percent effective. You can ask your doctor for new blood thinners like tab brilliant which further reduces chances of stent blockages. Hope I have answered your query. Let me know if I can assist you further. 