Abdominal Aortic Reconstruction – Procedure & Treatment

What is Abdominal Aortic Reconstruction?

Abdominal aortic reconstruction is a vascular surgical procedure in which the abdominal aorta – the largest blood vessel in the abdominal cavity – is surgically repaired or replaced. The procedure is most commonly performed for an abdominal aortic aneurysm (AAA), which is an abnormal enlargement of the aorta, but may also be required for other aortic conditions such as severe atherosclerosis or aortic dissection.

The abdominal aorta runs from the diaphragm down to where it divides into the two iliac arteries supplying the legs. Damage or enlargement of this vessel can become life-threatening, making surgical reconstruction urgently necessary in many cases.

Indications – When is the Procedure Necessary?

The most common reasons for abdominal aortic reconstruction include:

• Abdominal aortic aneurysm (AAA): Enlargement of the aorta to more than 3 cm in diameter; repair is generally recommended at 5–5.5 cm due to rupture risk
• Symptomatic or ruptured aneurysm: Emergency indication with immediate risk to life
• Aortic dissection: A tear in the inner wall of the aorta allowing blood to flow between its layers
• Aorto-iliac occlusive disease: Severe atherosclerosis causing impaired blood flow to the legs
• Traumatic aortic injury: Following accidents with vascular damage

Diagnostics Before the Procedure

Prior to abdominal aortic reconstruction, various diagnostic measures are performed to assess the anatomy of the vessel and the overall condition of the patient:

• Ultrasound (sonography): The primary screening method for measuring aortic diameter
• CT angiography (CTA): Detailed imaging of the aorta and its branches; the standard method for surgical planning
• Magnetic resonance imaging (MRI): Used as an alternative in patients with contrast agent intolerance
• Laboratory tests and cardiac evaluations: Assessment of cardiovascular risk

Surgical Techniques

Open Abdominal Aortic Reconstruction

In the traditional open approach, the abdominal aorta is accessed through a midline abdominal incision (laparotomy) or a lateral flank incision (retroperitoneal approach). The diseased segment is replaced with a vascular prosthesis (typically made of Dacron or PTFE). Depending on the extent of the disease, a straight tube graft or a bifurcated Y-shaped graft extending into the iliac arteries is used.

Endovascular Aortic Repair (EVAR)

Endovascular aortic repair (EVAR) is a minimally invasive technique in which a stent graft is delivered through the femoral arteries in the groin and deployed within the aorta. EVAR has replaced open surgery in many patients over recent years, offering the advantages of shorter recovery times, lower short-term complication rates, and reduced perioperative mortality.

Hybrid Procedures

In complex cases, open and endovascular techniques can be combined to address challenging anatomical situations that cannot be managed with a single approach.

Risks and Possible Complications

As with any major surgical procedure, specific risks are associated with abdominal aortic reconstruction:

• Bleeding during or after the operation
• Heart attack or cardiac arrhythmias (especially in patients with pre-existing heart disease)
• Kidney failure due to temporary interruption of blood supply
• Thrombosis or embolism
• Wound infections or prosthesis infection
• Erectile dysfunction due to nerve injury (in open surgery)
• Endoleak (incomplete sealing) after EVAR with renewed pressure in the aneurysm sac
• Spinal ischaemia with paralysis (in extensive procedures)

Follow-Up Care and Rehabilitation

Regular follow-up is essential after abdominal aortic reconstruction. After open surgery, the hospital stay is typically 7–14 days; after EVAR, it is often only 2–4 days. Key follow-up measures include:

• Regular imaging controls using ultrasound or CT (particularly after EVAR to detect endoleaks)
• Medical therapy for blood pressure control and atherosclerosis prevention (e.g., statins, antiplatelet agents)
• Lifestyle changes: smoking cessation, healthy diet, regular physical activity
• Physiotherapy to restore physical fitness and endurance

Prognosis

Abdominal aortic reconstruction is a well-established procedure with good long-term outcomes. In elective cases (planned, non-emergency surgery), perioperative mortality at experienced vascular surgery centres is below 2–5%. In emergency settings involving a ruptured aneurysm, mortality rates are significantly higher. In the long term, the procedure can nearly eliminate the risk of a life-threatening aortic rupture.

References

1. Wanhainen A et al. - European Society for Vascular Surgery (ESVS) 2019 Clinical Practice Guidelines on the Management of Abdominal Aorto-iliac Artery Aneurysms. European Journal of Vascular and Endovascular Surgery, 2019; 57(1): 8-93.
2. Chaikof EL et al. - The Society for Vascular Surgery practice guidelines on the care of patients with an abdominal aortic aneurysm. Journal of Vascular Surgery, 2018; 67(1): 2-77.
3. Rutherford's Vascular Surgery and Endovascular Therapy, 9th Edition. Elsevier, 2019.