期刊
AMERICAN JOURNAL OF NEURORADIOLOGY
卷 30, 期 1, 页码 91-94出版社
AMER SOC NEURORADIOLOGY
DOI: 10.3174/ajnr.A1369
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资金
- NATIONAL HEART, LUNG, AND BLOOD INSTITUTE [R21HL072247] Funding Source: NIH RePORTER
- NATIONAL INSTITUTE OF NEUROLOGICAL DISORDERS AND STROKE [R01NS042646] Funding Source: NIH RePORTER
- NHLBI NIH HHS [HL72247, R21 HL072247, R21 HL072247-03] Funding Source: Medline
- NINDS NIH HHS [R01 NS042646, R01 NS042646-06, NS42646, R01 NS042646-07] Funding Source: Medline
BACKGROUND AND PURPOSE: Elastase-induced aneurysms in rabbits have been proposed as a useful preclinical tool for device development. The object of this study was to report rates of morbidity and mortality associated with the creation and embolization of elastase-induced rabbit aneurysms and to assess the impact of operator experience on these rates. MATERIALS AND METHODS: Elastase-induced model aneurysms were created in New Zealand white rabbits (n = 700). One neuroradiologist/investigator, naive to the aneurysm-creation procedure at the outset of the experiments, performed all surgeries. All morbidity and deaths related to aneurysm creation In = 700) and embolization procedures (n = 529) were categorized into acute and chronic deaths. Data were analyzed with single-regression analysis and analysis of variance. To assess the impact of increasing operator experience, we broke the number of animals into 50-animal increments. RESULTS: There were 121 (17%) deaths among 700 subjects. Among 700 aneurysm-creation procedures, 59 deaths (8.4%) were noted. Among 529 aneurysm-embolization procedures, 43 deaths (8.1 %) were noted. Nineteen additional deaths (2.7% of 700 subjects) were unrelated to the procedures. Simple regression-indicated mortality associated with procedures diminished with increasing operator experience (R-2 = 0.38, P = .0180), and that for each 50-rabbit increment mortality was reduced, on average, by 0.6%. CONCLUSIONS: Mortality rates of approximately 8% are associated with both experimental aneurysm creation and with embolization in the rabbit elastase-induced aneurysm model, Increasing operator experience is inversely correlated with mortality, and the age of the rabbit is positively associated with morbidity.
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