Creation of sidewall aneurysm in rabbits: aneurysm patency and growth follow-up.

Abstract:

INTRODUCTION:To explore the patency and growth of surgical sidewall aneurysms in rabbits. MATERIALS AND METHODS:Forty sidewall aneurysms were created in the right common carotid artery (RCCA). Intravenous digital subtraction angiography (DSA) through the ear vein was performed immediately after creation. Three weeks later, intra-arterial DSA through the femoral artery was performed. Aneurysm sizes (neck, width, height and volume) were measured and calculated immediately after creation and 3 weeks later. Aneurysm patency after creation was evaluated. Differences in aneurysm sizes immediately after creation and 3 weeks later were compared using the Student's t test. RESULTS:Aneurysms and the parent artery remained patent in 38 (95%) of the 40 rabbits 3 weeks after creation. Two other rabbits (5%) showed aneurysm occlusion. There was a significant difference in aneurysm neck size 3 weeks after creation (3.6±0.9 mm vs 2.4±0.4 mm, p<0.0001). The aneurysm became wider 3 weeks later (5.8±1.5 mm vs 4.3±1.2 mm, p<0.0001). Aneurysm length was also larger than immediately after creation (6.1±1.3 mm vs 4.3±1.4 mm, p<0.0001). The aneurysm volume was larger than that created immediately (127.5±89.4 mm(3) vs 51.0±34.9 mm(3), p<0.0001). CONCLUSIONS:The patency rate of sidewall aneurysms in rabbits is high. The aneurysm keeps growing for at least 3 weeks after creation.

journal_name

J Neurointerv Surg

authors

Ding YH,Tieu T,Kallmes DF

doi

10.1136/neurintsurg-2012-010575

subject

Has Abstract

pub_date

2014-01-01 00:00:00

pages

29-31

issue

1

eissn

1759-8478

issn

1759-8486

pii

neurintsurg-2012-010575

journal_volume

6

pub_type

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