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Anevrizma III: Disiplinlerarası Bakım
Anevrizma yönetimi, anevrizmanın boyutuna ve semptomlarına bağlı olarak konservatif tıbbi tedavi veya cerrahi müdahaleyi içerir. Konservatif yönetim g…
Anevrizma tedavisi, tipik olarak çapı 5,5 santimetrenin altında olan küçük, asemptomatik anevrizmalar için konservatif tedaviyi içerir.
Tütün bırakma, hiperlipidemi, hipertansiyon ve diyabet gibi durumların yönetilmesi ve kademeli olarak artan fiziksel aktivite gibi risk faktörü modifikasyonunu içerir.
Anevrizma boyutu, ultrason veya BT taramaları kullanılarak düzenli olarak izlenir.
Çapı 4.0-5.4 santimetre olan küçük anevrizmalar 6-12 ayda bir, 4.0 santimetreden küçük abdominal aort anevrizmaları ise 2-3 yılda bir izlenir.
5,5 santimetreden büyük asemptomatik anevrizmalar için açık anevrizma onarımı olarak bilinen cerrahi bir prosedür önerilir.
Abdominal bir insizyon, hastalıklı aort segmentinden trombüs veya plak çıkarılması ve anevrizmanın proksimal ve distal uçlarına sentetik bir greftin dikilmesini içerir.
Doğal aort duvarı daha sonra greftin etrafına dikilir.
Diğer bir prosedür olan endovasküler anevrizma onarımı, femoral arterden sokulan bir femoral arter kateteri kullanılarak abdominal aort anevrizmasının içine dikişsiz bir aort grefti yerleştirilmesini içerir.
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Q1: When is conservative treatment recommended for abdominal aortic aneurysms?
Conservative treatment is recommended for small, asymptomatic abdominal aortic aneurysms measuring less than 5.5 centimeters in diameter. This approach focuses on modifying risk factors such as tobacco cessation, managing hyperlipidemia, hypertension, and diabetes, and gradually increasing physical activity to prevent aneurysm growth and rupture.
Q2: What monitoring schedule is used for different sizes of abdominal aortic aneurysms?
Aneurysm monitoring frequency depends on size. Small aneurysms measuring 4.0 to 5.4 centimeters require ultrasound or CT scans every 6 to 12 months. Aneurysms smaller than 4.0 centimeters are monitored every 2 to 3 years. This surveillance helps detect expansion early, allowing timely intervention when necessary.
Q3: What are the key differences between open aneurysm repair and endovascular repair?
Open aneurysm repair involves a large abdominal incision where the surgeon removes thrombus or plaque and sutures a synthetic graft to the proximal and distal ends. Endovascular aneurysm repair is less invasive, placing a sutureless aortic graft inside the aneurysm via a femoral artery catheter, avoiding major abdominal surgery.
Q4: When is surgical repair recommended for asymptomatic aneurysms?
Surgical repair is advised for asymptomatic aneurysms measuring 5.5 centimeters or larger. At this size threshold, the rupture risk increases significantly, making intervention necessary. The choice between open aneurysm repair and endovascular repair depends on patient factors and anatomical considerations.
Q5: What is endoleak and why is it a concern after aneurysm repair?
Endoleak is the most common complication following abdominal aortic aneurysm repair, involving blood seeping back into the old aneurysm sac. It results from inadequate seal at graft ends, graft fabric tears, or leaks between overlapping segments. This complication can lead to continued aneurysm growth and potential rupture.
Q6: What other complications can occur after aneurysm repair besides endoleak?
Additional complications include aneurysm growth above or below the graft, aortic dissection, bleeding, aneurysm rupture, renal artery occlusion from stent migration, incisional hematoma, infection at the incision site, and graft thrombosis. Angiography is performed after repair to check for leaks and ensure graft patency.
Q7: How does surgical repair differ for iliac artery aneurysms versus saccular aneurysms?
Iliac artery aneurysm repair uses a bifurcated graft that replaces the entire affected segment. For saccular aneurysms, only the bulbous lesion is excised, and the artery is repaired using primary closure by suturing or applying an autogenous or synthetic patch graft. Both approaches aim to restore normal blood flow.