Endovascular Aneurysm Repair (EVAR)

Endovascular aneurysm repair (EVAR) is a minimally invasive procedure that is designed to treat abdominal aortic aneurysms (AAAs), which are a type of aneurysm found on the body. There are different types of aortic aneurysms that are classified based on where along the aorta the weakness occurs. Abdominal aortic aneurysms are the most common type of aneurysm. They form bulges found in the largest artery in the human body. These bulges are very dangerous as they can rupture at any moment, leading to internal bleeding. EVAR procedures are usually used to treat abdominal aortic aneurysms. Thoracic aortic aneurysms are a type of aneurysm that form in the thoracic aorta, which travels through the chest. Both of these aneurysms pose serious risks to the body, and it is crucial to distinguish between them to ensure that they are treated properly.

Unlike traditional open surgery, EVAR works by creating small punctures to insert an engineered graft through the femoral arteries of the body. The surgeon will create an incision in the body, insert a long tube called a catheter into the incision, weave it through the blood vessel, and then place a tube in the aneurysm to function as a pipe. This helps create a new path for blood flow and reduces stress on the aneurysm. One of the primary benefits of the EVAR procedure is that it is highly efficient in treating AAAs. Additionally, since the procedure is minimally invasive, it can significantly reduce the length of hospital stays for patients by accelerating recovery time. In fact, many patients are able to return home just a day after the procedure.  This makes EVAR an appealing option to many patients, especially those who may have diseases or conditions that make it difficult to perform open surgery.

However, despite its many benefits, EVAR has its drawbacks. For instance, the surgery may cause damage to nearby blood vessels and tissues. It can also lead to infection, bleeding, injuries to the spinal cord, and reduced blood flow to the legs (which may lead to limb ischemia). Additionally, the grafts inserted during the surgery may start to malfunction as time passes, which can result in additional procedures to replace the graft. Endoleaks, which occur when blood continues to enter the sac of the aneurysm even after the procedure, may also occur.

In conclusion, endovascular aneurysm repair (EVAR) has transformed the medical field by changing the way that surgeons treat aortic aneurysms and offering a promising alternative to traditional open-heart surgery. EVAR can reduce hospital stays, accelerate recovery time, and alleviate stress for many patients. However, this procedure may not be suitable for everyone, and there are certain risks that should be taken into consideration. As surgical techniques continue to improve, EVAR will likely continue to be a favorable treatment option for many patients.

Written by Hawi Teju at Incisionary

References

Aortic Aneurysm: Symptoms, Causes & Treatment. (2017, March 12). Cleveland Clinic. https://my.clevelandclinic.org/health/diseases/16742-aorta-aortic-aneurysm 

Clinic, C. (2022, January 26). Endovascular aneurysm repair lowers the risk of life-threatening tears or ruptures. EVAR uses minimally invasive techniques to reinforce blood vessel walls. Cleveland Clinic. https://my.clevelandclinic.org/health/treatments/22291-endovascular-aneurysm-repair 

Endovascular Repair of Abdominal Aortic Aneurysms | Society for Vascular Surgery. (2026). Vascular.org. https://vascular.org/patients-and-referring-physicians/conditions/endovascular-repair-abdominal-aortic-aneurysms 

Panoramic shot of Penn Medicine’s downtown campus. (2025). Pennmedicine.org. https://www.pennmedicine.org/treatments/endovascular-aneurysm-repair-evar