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International Angiology 2012 February;31(1):22-7

Copyright © 2012 EDIZIONI MINERVA MEDICA

language: English

Immediate conversion to CAS after neurological intolerance at cross-clamping test during CEA: a preliminary experience

Guy Bianchi P. 1, Tolva V. 1, Dalainas I. 2, Bertoni G. 1, Cireni L. 1, Trimarchi S. 3, Rampoldi V. 3, Casana R. 1

1 IRCCS Istituto Auxologico Italiano, Milan, Italy; 2 Department of Vascular Surgery, Attikon University Hospital, Athens, Greece; 3 Unit of Vascular Surgery, IRCCS Policlinico San Donato, Milan, Italy


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AIM: The aim of this preliminary study is to evaluate the feasibility and efficacy of CAS as treatment option to endarterectomy when carotid shunt cannot be used safely.
METHODS: The medical records concerning 469 carotid stenosis treated between January 2006 and December 2009 were retrospectively reviewed, focusing on cross-clamp intolerance during CEA. Patients with cross-clamping intolerance were divided in two groups. Group 1: those that concluded the open procedure with the use of a shunt, and Group 2: those who experience immediate brain intolerance and coma and were immediately converted to an endovascular procedure. Mortality and neurological adverse event rate were compared between shunted CEA and cross-clamping intolerant cases converted into CAS. The secondary end-point was long-term survival.
RESULTS: Carotid cross-clamp intolerance occurred in 30 cases (8.7%). CEA with Pruitt-Inahara’s shunt was performed in 17 cases with a perioperative neurological adverse event rate of 23.5%. In 13 cases limitations to shunting due to quick onset of coma and/or an unfavorable anatomy were encountered. In these 13 cases the open intervention was immediately converted into endovascular procedure. Technical success was achieved in all the converted to CAS cases (100%), with a perioperative neurological adverse event rate of 7.7% (P=0.35 between the two groups). No significant difference emerges comparing patient’s survival between the cases CONCLUSION: Nevertheless, the small dimension of this survey, immediate conversion to CAS resulted feasible with a lower risk of neurological adverse events if compared to CEA with shunt, and could be considered as an alternative to CEA when carotid shunt cannot be used safely.

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