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
第一作者:Dapeng Mo,Gang Luo
通讯作者:Zhongrong Miao
2016-11-04
发表杂志:Stroke and Vascular Neurology
发表类型: Original Contributions
影响因子(IF): 4.081
PMID: 28959477 Pubmed原文链接 全文下载
Hyperperfusion syndrome (HPS) is a rare but potentially a life-threatening complication aftercarot id artery angioplasty and stenting (CAS). Staged CAS has been an alternative to prevent HPS.
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.
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.
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.