Why heart stents can get blocked again and how patients can prevent it

Getting a heart stent opens a blocked artery, but it does not guarantee a permanent fix. A stent is a small mesh tube placed inside an artery to keep it open. While modern versions reduce problems, the artery can still narrow again or develop a blood clot inside the tube. Dr Bipeenchandra Bhamre, a cardiac surgeon in Mumbai, explains that re-narrowing inside the stent, known as restenosis, happens in about five to ten percent of patients. Problems happen for different reasons. Restenosis involves tissue growing inside the stent over time, while a blood clot causes a sudden blockage. Fatty deposits can also build up elsewhere in the coronary arteries to form new blockages.

Warning Signs

Warning signs include chest pain or pressure, breathlessness, unusual fatigue, and discomfort spreading to the arm, jaw or back. A sudden blockage can trigger a heart attack, though symptoms may sometimes be mild. Anyone facing these signs needs emergency medical help right away. Blockages can happen at different times. A blood clot may form within hours, days or months, while restenosis often develops over several months. Problems can also appear years later from new clots or fatty deposits.

Risk Factors

Certain people face a higher risk of complications. This includes individuals with diabetes, high cholesterol, high blood pressure, kidney disease, or a smoking habit. Risk is also higher for people with complex blockages, long or multiple stents, or past restenosis. Missing prescribed antiplatelet medicines is a major risk factor because these drugs stop blood clots from forming inside the stent. Patients must take medicines as directed and talk to a doctor before making any changes.

Treatment And Prevention

Doctors can treat a blocked stent depending on the cause and severity. Treatments include using a balloon to widen the area, inserting another stent, using special techniques to remove the blockage, or performing bypass surgery. Patients can lower their risk by eating a healthy diet, staying physically active as advised, avoiding tobacco, and controlling diabetes, blood pressure, and cholesterol. Regular follow-up appointments with a cardiologist are also necessary to monitor health and check medication use.

Context

Heart disease often requires long-term management even after surgical procedures like stenting. Because cardiovascular conditions involve chronic changes in blood vessels, medications and lifestyle habits play a continuous role in preventing future emergencies.