Chapter 9: Carotid Intervention Flashcards
(102 cards)
a surgical incision through the wall of an artery into the lumen
arteriotomy
A catheter-based procedure in which a metal mesh tube is deployed into an artery to keep it open following balloon angioplasty to dilate a stenosis
carotid artery stenting
A surgical procedure during which the carotid artery is opened and plaque is removed in order to restore normal luminal diameter
carotid endarectomy
a narrowing of the lumen of a stent that causes a stenosis
in-stent restenosis
abbreviated PTFE, is a synthetic graft material used to create grafts and blood vessel patches; a common brand name is Gore-Tex
polytetrafluoroethylene
plaque observed at end of ECA site, may have abrupt stepped edge (shelf-lesion_; color and spectral Doppler may display turbulence or elevated PSV depending on severity
residual plaque
disruption along vessel wall with moving material observed within lumen; disturbed color flow patterns and elevated PSV often present
intimal flap
no color filling, no lumen detected, no spectral Doppler signal
occlusion
irregular buckling of patch material along vessel wall; perivascular fluid accumulation
infected patch
nonvascular mass adjacent to vessel; may appear cystic or contain various levels of echogenicity
hematoma
dilated area attached to vessel with flow demonstrated on color and spectral Doppler; to and fro pattern flow may be detected in connection between dilated sac and native vessel; color swirling (yin-yang appearance_ present within dilated sac
pseudoaneurysm
focal area of elevated velocities with poststenotic turbulence; homogeneous material present along the wall in cases of restenosis due to hyperplasia
restensosis
open operation that is performed through an arteriotomy mode longitudinally from normal ICA, through the bulb, and into CCA
Carotid edarectomy
common potential problems of carotid endarectomy
narrowing as a result of closure
plaque retained from an incomplete excision
neointimal hyperplastic response to the months of follow-up
Patches may be either _____ or ____.
autogeneous vein
synthetic
complete transection of ICA at carotid bifurcation; does not require a patch because sutures are placed on widened bulb of ICA
eversion carotid endarectomy
Post CAS patients should have an exam done at least ____ or less for baseline study.
1 month
patch that has woven appearance to walls
Dacron patch
patch that shows as two brightly echogenic lines
double layered PTFE
Snythetic patch and swelling typically lie _____ to endarectomy.
superficial
may be the result of blood extravasated from surrounding tissue or loose ligatures
hematoma
nonstenotic vascular problem that gives vessel aneurysmal appearance
oversized or irregular patch
Patch identified as synthetic is more ______ than an autogeneous patch
thrombogenic
stenosis identified within first postoperative month are considered:
technical problems of surgery