Home
Resources
Publications
Staged Carotid Artery Angioplasty and Stenting for Patients With High-Grade Carotid Stenosis With High Risk of Developing Hyperperfusion Injury: A Retrospective Analysis of 44 Cases

Staged Carotid Artery Angioplasty and Stenting for Patients With High-Grade Carotid Stenosis With High Risk of Developing Hyperperfusion Injury: A Retrospective Analysis of 44 Cases

Dapeng Mo, Gang Luo, Bo Wang, Ning Ma, Feng Gao, Xuan Sun, Xiaotong Xu, Zhongrong Miao

Stroke Vasc Neurol. 2016 Dec 19;1(4):147-153.

PMID: 28959477

Abstract:

Background:
Hyperperfusion syndrome (HPS) is a rare but potentially a life-threatening complication after carotid artery angioplasty and stenting (CAS). Staged CAS has been an alternative to prevent HPS.
Materials and methods:
44 of 908 patients with high-grade internal carotid artery stenosis or near occlusion were at risk of HPS because of poor collateral flow and impaired cerebral blood flow (CBF). They were treated with first (stage 1), followed by a full CAS (stage 2) 1 month later. Their 30-day outcomes were tabulated and analysed.
Results:
During follow-up, 1 of the 44 (2.2%) patients developed HPS immediately, 3 (7%) had postprocedural HPS (ie, transcranial Doppler (TCD) >120%) without clinical symptoms and 3 (7%) required stenting at stage 1 for carotid dissections. After stage 1, there were significant improvement between the preprocedural and postprocedural CBF (0.98±0.06 vs 0.85±0.05, p<0.05), mean transit time (MTT; 1.05±0.05 vs 1.15±0.05, p<0.05), time to peak (TTP; 1.04±0.06 vs 1.20±0.06, p<0.05) on CT perfusion (CTP), and CBF (66.41±7.41 vs 44.44±6.43, p<0.05) on TCD. After stage 2, improvement was seen in CBF (1.01±0.07 vs 0.98±0.06, p<0.05), MTT (1.01±0.05 vs 1.05±0.05, p<0.05), TTP (0.99±0.06 vs 1.04±0.06, p<0.05) on CTP and CBF (66.41±7.41 vs 93.78±18.81, p<0.05) on TCD. 2 had postoperative increase of middle cerebral artery mean flow velocity of 120% after stage 2 without clinical symptoms.
Conclusion:
Staged carotid artery stenting probably decreased the chance of developing HPS in this group of selected patients. Although requiring a 2-step intervention, staged CAS may be a safe and effective alternative.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP298931	MTT - CAS 298-93-1		298-93-1	Price

As a specialist in analytical chemical Products, Alfa Chemistry offers consumers a wealth of raw materials and a full range of technologies and services.

QUICK LINKS

HEADQUARTERS

Tel:

Fax:

Email: