Correlation Between Laminar Wall Shear Stress and Growth of Unruptured Cerebral Aneurysms: In Vivo Assessment
| Autor: | Peter Theiss, Denise Brunozzi, Amanda Andrews, Sepideh Amin-Hanjani, Fady T. Charbel, Ali Alaraj |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Adult
Male medicine.medical_specialty Hemodynamics Magnetic resonance angiography Correlation 03 medical and health sciences 0302 clinical medicine Aneurysm In vivo Internal medicine medicine Shear stress Humans cardiovascular diseases Aged Retrospective Studies Aged 80 and over medicine.diagnostic_test business.industry Repeated measures design Intracranial Aneurysm Middle Aged medicine.disease 030220 oncology & carcinogenesis Disease Progression cardiovascular system Cardiology Female Surgery Stress Mechanical Neurology (clinical) business Parent vessel Blood Flow Velocity Magnetic Resonance Angiography 030217 neurology & neurosurgery |
| Zdroj: | World Neurosurgery. 131:e599-e605 |
| ISSN: | 1878-8750 |
| DOI: | 10.1016/j.wneu.2019.08.005 |
| Popis: | Background Cerebral aneurysm growth is significantly associated with aneurysm rupture, but risk factors for aneurysm growth are not well characterized. It is believed that altered intracranial hemodynamics may contribute to the pathophysiology of aneurysm growth, but these mechanisms are not fully understood. Objective Here, we assess the correlation between growth of unruptured cerebral aneurysms over time and average laminar shear stress on the wall of the parent vessel proximal to the aneurysm. Methods Patients with unruptured, untreated cerebral aneurysms followed over time at our institution between 2005 and 2017 were retrospectively reviewed. Patients were included if at least 1 quantitative magnetic resonance angiography study was performed at baseline and follow-up. The nonparametric Wilcoxon-Mann-Whitney test was used to compare mean parent vessel−laminar wall shear stress (PV-LWSS) proximal to the aneurysm in growing versus stable aneurysms. Change in PV-LWSS over time was evaluated using the 1-way repeated measures analysis of variance test. Results Thirty-three patients with 45 total aneurysms were included (63% female, mean age 60 years). Four patients presented with aneurysm growth over time. Unstable aneurysms had significantly higher PV-LWSS compared with stable aneurysms at the time of first diagnosis (29.3 vs. 13.1 dynes/cm2, P = 0.02) and at 1-year follow-up (25.8 vs. 12.3 dynes/cm2, P = 0.05). Conclusions The subset of unruptured cerebral aneurysms that demonstrate growth over time has a significantly higher mean PV-LWSS than stable aneurysms, as measured by quantitative magnetic resonance angiography. This information at the time of diagnosis may help predict future aneurysm growth, stratify rupture risk, and identify those aneurysms that should undergo prophylactic treatment. |
| Databáze: | OpenAIRE |
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