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Aortic Surgery Glossary

100 terms total — 24 showing — Last updated 15 Sep 2026

aortic stiffness index

Advanced Technical IVT

A measure of aortic wall elasticity calculated from the relationship between pressure change and relative diameter change.

Showing 73–96 of 100

hemodynamically significant

Intermediate Technical IVT

A lesion or condition that causes measurable impairment of blood flow sufficient to affect organ perfusion or cardiac fu...

Technical Term Full entry →

hybrid aortic arch repair

Advanced Technical IVT

A combined surgical and endovascular approach for treating complex aortic arch pathology.

Technical Term Full entry →

intramural hematoma

Advanced Technical IVT

Bleeding within the aortic wall without communication between true and false lumens.

Technical Term Full entry →

IRAD

Intermediate Technical IVT

International Registry of Acute Aortic Dissection, a multinational database tracking acute aortic dissection outcomes.

Abbreviation Full entry →

landing zone

Professional Technical IVT

The anatomical segment of healthy aorta where an endovascular stent graft seals, critical for preventing endoleaks.

Technical Term Full entry →

malperfusion syndrome

Advanced Technical IVT

Organ dysfunction resulting from compromised blood flow due to aortic dissection or other aortic pathology.

Technical Term Full entry →

Marfan syndrome

Intermediate Technical IVT

A connective tissue disorder frequently associated with aortic root dilatation and risk of dissection.

Technical Term Full entry →

An atherosclerotic plaque that ulcerates through the internal elastic lamina into the media.

Technical Term Full entry →

PMEG

Professional Technical IVT

Acronym for Physician Modified Endograft, a custom stent graft modified by the surgeon to fit specific patient anatomy.

Abbreviation Full entry →

proximal seal zone

Advanced Technical IVT

The anatomical region where the proximal end of an endovascular graft achieves fixation and sealing against the aortic w...

Anatomical Reference Full entry →

pseudoaneurysm

Intermediate Technical IVT

A contained rupture of the arterial wall with blood flow contained by surrounding tissue rather than vessel wall layers.

Technical Term Full entry →

retrograde cerebral perfusion

Professional Technical IVT

Technique providing blood flow to the brain through venous circulation during aortic arch surgery when antegrade flow is...

RCP
Technical Term Full entry →

Ross procedure

Professional Technical IVT

Aortic valve replacement using the patient's own pulmonary valve as an autograft, with pulmonary valve replacement using...

Technical Term Full entry →

SINE

Professional Technical IVT

Acronym for Spinal Ischemic Neurologic Event, a complication of thoracoabdominal aortic surgery affecting spinal cord fu...

Abbreviation Full entry →

sinotubular junction

Intermediate Technical IVT

The anatomical boundary between the sinuses of Valsalva and the tubular portion of the ascending aorta, marking the uppe...

STJ
Technical Term Full entry →

spinal cord ischemia

Professional Technical IVT

Inadequate blood supply to the spinal cord, a serious complication of thoracoabdominal aortic surgery causing potential...

Technical Term Full entry →

Stanford classification

Intermediate Technical IVT

A two-type system for classifying aortic dissections based on ascending aorta involvement.

Technical Term Full entry →

TAAA

Intermediate Technical IVT

Acronym for Thoracoabdominal Aortic Aneurysm, aneurysmal dilatation involving both thoracic and abdominal aortic segment...

Abbreviation Full entry →

TEVAR

Professional Technical IVT

Thoracic endovascular aortic repair, a minimally invasive procedure using stent grafts to treat thoracic aortic patholog...

Technical Term Full entry →

Type A dissection

Intermediate Technical IVT

An aortic dissection involving the ascending aorta according to Stanford classification, requiring emergent surgical rep...

Technical Term Full entry →

type B dissection

Intermediate Technical IVT

Aortic dissection that does not involve the ascending aorta, typically beginning distal to the left subclavian artery.

Technical Term Full entry →

Type IIIA endoleak

Professional Technical IVT

Blood flow into the aneurysm sac through a defect in the stent graft fabric.

Technical Term Full entry →

Type IIIB endoleak

Advanced Technical IVT

Endoleak caused by fabric tears, suture holes, or graft porosity in endovascular aortic repair devices.

Technical Term Full entry →

visceral debranching

Professional Technical IVT

Surgical bypass of visceral arteries prior to endovascular repair to create adequate landing zones for stent graft deplo...

Technical Term Full entry →
Showing 73–96 of 100

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