Pune Army Doctors Achieve Medical Breakthrough in Treating Rare Coronary Stent Infections
In a significant medical achievement, a team of doctors from the Army Institute of Cardiothoracic Sciences (AICTS) in Pune has successfully treated four patients suffering from an exceptionally rare and life-threatening condition known as coronary stent infection. This condition, medically referred to as post-percutaneous coronary intervention, coronary artery aneurysm, or coronary stent infection, has fewer than 50 documented cases globally, making it a poorly understood and highly dangerous complication.
Rare Condition with High Mortality Rates
The four patients had initially undergone angioplasty procedures at various civil and private hospitals before being referred to AICTS for advanced management. According to medical literature, coronary stent infections carry mortality rates of up to 40%, particularly when diagnosis or intervention is delayed. The rarity of the condition often leads to under-recognition, increasing the risk of severe complications, including sudden cardiac death.
A senior cardiothoracic surgeon at AICTS emphasized the gravity of the situation: "This complication is extremely rare and potentially fatal. Globally, the evidence is limited to isolated case reports and small series. Managing even a single case is demanding, so treating four successfully was a significant achievement. All of them have recovered well."
Complex Surgical Procedures and Recovery
Each case presented unique surgical challenges that required meticulous planning and execution between December 2024 and January. The surgical approach involved either extraction or exclusion of the infected coronary stent aneurysm, followed by coronary artery bypass grafting beyond the affected segment to restore blood flow. Procedures lasted between three-and-a-half to five hours, depending on the complexity.
Dr. Avinash Inamdar, former head of the department of heart surgery at BJ Medical College, commented on the importance of this success: "Such cases are rare. The fact that it could be treated is a big positive. One or two such patients had approached us for consultation in the past. However, AICTS's success could help provide standard operating procedures, which will be useful for private hospitals too. It is a boon for cardiologists in India."
Early Diagnosis and Risk Factors
Early diagnosis is critical in managing coronary stent infections. The onset of infection can occur within days of stent placement, with the four patients experiencing symptoms ranging from as early as one day to about two weeks post-procedure. All patients had received drug-eluting stents earlier, which experts say may carry a higher risk of infection due to delayed healing of the vessel lining. This can leave parts of the stent exposed, creating a potential site for bacterial colonization.
Doctors attributed such infections to multiple risk factors, including:
- Breaches in sterile protocols during procedures
- Repeated vascular access
- Prolonged catheter use
- Existing infections elsewhere in the body
The most common pathogens suspected in these cases are Staphylococcus aureus and Pseudomonas species.
Comprehensive Treatment Protocol at AICTS
The treatment protocol at AICTS combines early imaging with aggressive medical and surgical intervention. Coronary angiography is used as the first-line diagnostic tool, followed by CT coronary angiography for surgical mapping and PET-CT scans to pinpoint infection sites. Patients are typically treated with a four-week course of targeted antibiotics. However, in cases involving complications such as aneurysm formation or persistent infection, surgery becomes unavoidable.
A member of the doctor's team explained the surgical management: "Surgical management involves complete removal of infected material, debridement of surrounding tissue, and revascularization through bypass grafting. Precision is key because of the high-risk anatomy involved."
This breakthrough not only highlights the expertise of the AICTS team but also sets a precedent for handling such rare and complex cardiac conditions in India and beyond.
