Aortic Aneurysm Treatment in Hyderabad

Types of Aortic Aneurysm

Thoracic Aortic Aneurysm (TAA)

Affects the portion of the aorta that passes through the chest. Further classified by location: ascending aorta (before the arch), aortic arch, and descending thoracic aorta. Ascending aortic aneurysms are the most common and are often associated with bicuspid aortic valve or connective tissue disorders such as Marfan syndrome.

Abdominal Aortic Aneurysm (AAA)

Affects the portion of the aorta below the diaphragm, most commonly below the renal arteries. More common in men over 65 with a history of smoking. The most common aortic aneurysm type overall. Screening with ultrasound is recommended for high-risk individuals.

Thoracoabdominal Aortic Aneurysm

Extends from the chest into the abdomen, involving a longer segment of the aorta and often the origins of the vessels supplying the kidneys and bowel. The most complex aneurysm to treat surgically.

Aortic Dissection

Strictly distinct from an aneurysm but closely related. Occurs when a tear in the inner layer of the aortic wall allows blood to track between the layers, creating a false channel. A surgical emergency. Risk factors include hypertension, bicuspid aortic valve, Marfan syndrome, and pre-existing aortic aneurysm.

Causes and Risk Factors

Hypertension:

The most important modifiable risk factor for both aneurysm development and progression. Elevated blood pressure exerts constant mechanical stress on the aortic wall, accelerating degeneration.

Atherosclerosis:

Plaque buildup in the aortic wall weakens the vessel, particularly in the abdominal aorta. Shares risk factors with coronary artery disease.

Smoking:

The single strongest modifiable risk factor for abdominal aortic aneurysm. Smokers have a 3 to 5 times higher risk of AAA than non-smokers. Smoking also accelerates aneurysm growth rate.

Connective Tissue Disorders:

Marfan syndrome, Loeys-Dietz syndrome, and Ehlers-Danlos syndrome (vascular type) are genetic conditions that weaken the structural proteins in the aortic wall, causing aneurysms at younger ages and often in the ascending aorta.

Bicuspid Aortic Valve:

Approximately 50% of patients with a bicuspid aortic valve develop ascending aortic dilation. Regular surveillance with echocardiography or CT is essential in this group.

Family History:

A first-degree relative with an aortic aneurysm increases personal risk by approximately 10-fold. Genetic screening may be appropriate in familial cases.

Inflammatory and Infectious Causes:

Giant cell arteritis, Takayasu arteritis, and rarely, infections (mycotic aneurysms) can weaken the aortic wall and cause aneurysm formation.

Symptoms of Aortic Aneurysm

The majority of aortic aneurysms are asymptomatic until they are large, rapidly expanding, or have ruptured. When symptoms do occur, they vary by location.

Thoracic Aneurysm Symptoms

Chest or back pain (often deep, constant, and not related to exertion), hoarseness or difficulty swallowing if the aneurysm compresses adjacent structures, new or worsening heart murmur if the aortic root is involved and the aortic valve is affected.

Abdominal Aneurysm Symptoms

Pulsating sensation in the abdomen, deep abdominal or back pain. A tender, pulsatile mass may be felt on examination when the aneurysm is large.

Ruptured Aneurysm (Emergency)

Sudden, severe tearing or ripping pain in the chest, abdomen, or back. Collapse, profound hypotension, and loss of consciousness. A ruptured aortic aneurysm is immediately life-threatening and requires emergency surgical intervention.

Sudden severe tearing or ripping chest or back pain is a medical emergency. Call +91 9000909073 or go directly to the nearest emergency department immediately. Do not wait for symptoms to change. Aortic dissection and rupture are time-critical emergencies.

Diagnosing Aortic Aneurysm

Ultrasound:

The standard screening investigation for abdominal aortic aneurysm. Accurate, inexpensive, non-invasive, and suitable for repeated monitoring. Recommended for men over 65 with a smoking history.

CT Angiography:

The primary imaging modality for thoracic aneurysms and for pre-operative planning of all aortic interventions. Provides precise measurements of aneurysm dimensions, relationship to branch vessels, and access route anatomy.

MRI/MR Angiography:

An alternative to CT that avoids radiation. Preferred for younger patients requiring repeated surveillance and for connective tissue disorder patients. Provides excellent anatomical detail without contrast in selected sequences.

Transthoracic and Transoesophageal Echocardiography:

Evaluates the ascending aorta and aortic root. Important for assessing associated bicuspid aortic valve disease and monitoring ascending aortic aneurysm size in Marfan syndrome and related conditions.

Genetic Testing:

For patients with ascending aortic aneurysm at a young age, strong family history, or clinical features of Marfan or Loeys-Dietz syndrome, genetic testing guides risk stratification and surgical thresholds.

Treatment of Aortic Aneurysm

Medical Management and Surveillance

Small aneurysms below the threshold for intervention are managed with regular imaging surveillance and aggressive risk factor modification. Blood pressure control to a target below 130/80 mmHg is essential. Beta-blockers are often used specifically because they reduce the rate of aortic expansion in Marfan syndrome and may benefit other aneurysm types. Smoking cessation is strongly recommended, as smoking significantly accelerates aneurysm growth.

Surveillance intervals depend on aneurysm size and growth rate. A 4 cm abdominal aneurysm may be rescanned annually; one approaching the repair threshold is rescanned every 3 to 6 months.

Surgical Repair Thresholds

The decision to repair is based on aneurysm size, growth rate, symptoms, and individual patient factors:

Ascending Aorta Repair Threshold

5.5 cm in most patients. 5.0 cm in Marfan syndrome, Loeys-Dietz syndrome, or bicuspid aortic valve with rapid growth. 4.5 cm when combined with aortic valve surgery.

Descending Thoracic / TAAA Threshold

5.5 to 6.0 cm in most patients. Lower threshold for connective tissue disorders.

Abdominal Aortic Aneurysm Threshold

5.5 cm in men. 5.0 to 5.5 cm in women (relative to body size). Any rapidly growing aneurysm (more than 1 cm per year). Any symptomatic aneurysm.

Open Surgical Repair

The conventional treatment for aortic aneurysm. The diseased segment of aorta is replaced with a synthetic graft under general anesthesia. Open repair requires a sternotomy (for thoracic) or laparotomy/retroperitoneal incision (for abdominal). It is highly durable with excellent long-term outcomes but carries significant operative stress, particularly for the abdominal approach.

Endovascular Aneurysm Repair (EVAR / TEVAR)

A minimally invasive alternative to open surgery. A fabric-covered stent graft is delivered through catheters in the femoral arteries (groin) and deployed inside the aneurysm, excluding the weakened segment from blood pressure. EVAR (for abdominal aneurysms) and TEVAR (for thoracic aneurysms) have significantly lower short-term morbidity and mortality than open repair, making them the preferred option for patients with suitable anatomy. Long-term durability requires continued surveillance as endoleaks (blood pressure reaching the aneurysm sac) can occur.