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  • Title: The masaryk hospital extracranial-intracranial bypass study.
    Author: Radovnicky T, Vachata P, Bartos R, Sames M.
    Journal: Neurosurg Rev; 2017 Jan; 40(1):53-57. PubMed ID: 27194131.
    Abstract:
    Patients with symptomatic internal carotid artery (ICA) occlusion with haemodynamic impairment are at higher risk of ischaemic stroke, and they require treatment. There are two main options: the best medical treatment and an extracranial-intracranial bypass. The aims of this study are to analyse the 30-day and 2-year risk of stroke and death in patients with extracranial-intracranial bypass performed by our department and to compare our results with major published studies. This retrospective study enrolled patients who underwent surgery from 1998 to 2012. Inclusion criteria were the following: (1) radiological diagnosis of symptomatic atherosclerotic internal carotid artery occlusion (AICAO), (2) less than 50 % stenosis of a contralateral ICA, (3) transient ischaemic attack (TIA) or ischaemic stroke in the hemispheric territory on an occluded side within 120 days and (4) haemodynamic impairment of at least stage I according to transcranial Doppler sonography (TCDS), perfusion CT and SPECT. Patients were followed up in the outpatient department with TCDS and sonography of the contralateral ICA and the anastomosis after 6 weeks and every 12 months after that. All risks of stroke and death from surgery were recorded throughout the 30 days and the following 2 years post surgery. From September 1998 to November 2012, 93 patients were selected for bypass surgery. There were 72 men and 21 women in an age range of 33 to 79 years (mean 58.9 years) and a follow-up range of 13 to 187 months (mean 108 months). The 30-day risk of stroke and death was 7.5 %. It consists of one death, one major ischaemic stroke, two reversible neurological deficits and three TIAs. The 2-year risk of stroke and death was 9.7 %. Extracranial-intracranial bypass is an effective treatment of haemodynamic impairment in patients with internal carotid occlusion. Maintaining low-level morbidity and mortality is possible with a dedicated neurovascular team. This is the only way in which we can reduce the risk of stroke and death in patients with bypass compared to patients treated medically.
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