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“MODIFIED FROZEN ELEPHANT TRUNK” TECHNIQUE IN URGENT MANAGEMENT OF COMPLICATED AORTIC DISEASE: VNHI EXPERIENCE
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Abstract
Injuries to the ascending aorta or aortic arch remain a significant challenge for cardiac surgeons and interventionists. These lesions often lack a safe proximal landing zone for stent-graft placement, and conventional aortic replacement surgery using cardiopulmonary bypass may not always provide a definitive solution. In this study, we describe emergency cases at the Vietnam National Heart Institute – Bach Mai Hospital, where an modified Frozen Elephant Trunk (FET) technique was applied to treat complex aortic pathologies. This hybrid approach combines endovascular intervention with open aortic replacement to achieve complete lesion resolution. Among the cases studied: 6 patients (42.8%) had aortic arch aneurysms, 5 patients (35.8%) had Stanford type A aortic dissections, 3 patients (21.4%) had complicated Stanford type B aortic dissections. The modified FET technique requires precise assessment of aortic pathology, appropriate stent-graft sizing, and meticulous surgical execution. A well-coordinated multidisciplinary surgical-interventional team is essential to meet the demands of emergency interventions.
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Keywords
thoracic aortic aneurysm, aortic dissection, frozen elephant trunk technique, thoracic endovascular aortic repair
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