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International Angiology 2007 March;26(1):49-52

Copyright © 2007 EDIZIONI MINERVA MEDICA

language: English

Changing patterns in the etiology of acute lower carotid stenosis

Klonaris C., Georgopoulos S., Katsargyris A., Tsekouras N., Bakoyiannis C., Giannopoulos A., Bastounis E.

Vascular Division, 1st Department of Surgery, Athens University Medical School, Athens, Greece


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Aim. The aim of this study was to examine the causes of acute lower limb ischemia (ALLI) in a major referral center in Greece.
Methods. Hospital records of patients that were admitted with ALLI between January 1, 2000 and December 31, 2004, were retrospectively reviewed for this purpose. A total of 440 cases of ALLI in 351 patients were identified.
Results. In 174 (39.54%) cases, the ischemia was attributed to embolism; in 221 (50.23%) to thrombosis and in the remaining 45 (10.23%) to less common causes of ALLI (trauma [iatrogenic and non], vasculitis, dissection). Of 174 cases of embolism, 136 (78.16%) were of cardiac origin, 22 (12.64%) were due to non-cardiac emboli, while in the remaining 16 cases (9.2%) no specific origin of embolism was found. Of 221 cases of thrombosis 66 (29.86%) concerned native arterial thrombosis, while 155 (70.14%) concerned postinterventional thrombosis, including 144 (65.16%) cases of bypass graft thrombosis and 11 (4.98%) cases of iliac or femoral stent thrombosis. Sixty patients were admitted more than once with ALLI, most commonly due to repeated bypass graft thrombosis (85%). The latter was diagnosed in 32.73% of all ALLI cases and presented more often than native arterial thrombosis by a ratio of approximately 2.2:1.
Conclusion. This study indicates that currently the leading cause for hospital admissions in patients with ALLI is thrombosis which most commonly occurs in bypass grafts rather than in native arteries.

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