The present study was aimed at determining surgical policy and terms of intervention in bilateral atherosclerotic lesions of carotid arteries. Depending on the treatment policy, a total of 114 patients were subdivided into two groups. Group One patients underwent the traditional procedure and carotid reconstruction was performed on the side with more pronounced stenosis or in the carotid basin with ischaemic stroke where an ischaemic episode had occurred, with the total rate of complications related to ischaemic stroke or death amounting to 4.4%. In Group Two patients in order to determine the side subject to carotid reconstruction we primarily used a newly developed policy for determining the most affected carotid basin. For this purpose we worked out a special scale making it possible to determine the degree of the lesion of the carotid basin from each side. Using this policy we managed to decrease the complication rate in Group Two patients to 2.1%. According to our data the optimal terms for performing carotid endarterectomy on the opposite side vary from 2 to 3 months.
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