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Natural history and clinical outcomes in patients with complex intracranial aneurysms: a review of 115 bypass cases and 22 nonsurgical cases

  • Jie Zhang
  • Xiang’en ShiEmail author
  • Fangjun Liu
  • Yuming Sun
  • Hai Qian
  • Zhongqing Zhou
  • Yongli Zhang
  • Long Wang
Original Article
  • 1 Downloads

Abstract

The purpose of this study was to evaluate the natural history of patients with these heterogeneous aneurysms to provide guidance for their treatment. This retrospective analysis was performed at a single institution and included 137 patients with complex intracranial aneurysms who underwent a natural history evaluation. Among the 115 patients who underwent bypass surgery, stroke (n = 39, 33.9%) was the most common clinical symptom followed by progressively severe headaches (n = 25, 21.7%). Of the 104 patients with follow-up information, 87 (83.7%) returned to a normal life within a mean follow-up of 4.17 ± 2.09 years. Ten deaths (9.6%) occurred after a mean of 1.3 ± 0.9 years. Among the 22 patients who selected nonsurgical treatment, mass effect (n = 9, 40.9%) was the most common clinical presentation, and 14 deaths (63.6%) occurred after a mean of 3.3 ± 2.5 years. The modified Rankin scale (mRS) scores of 5 survivors (5/22, 22.7%) progressed from 0–2 at initial presentation to 3–4. Bypass surgical treatment for these aneurysms appears to be effective and can achieve good clinical outcomes without additional limitations related to individual aneurysms despite the impact of recent endovascular techniques on vascular surgery.

Keywords

Complex intracranial aneurysms Outcome Bypass Natural history 

Notes

Funding information

Beijing Municipal Science and Technology Commission provided financial support in the form of a Natural Science Foundation of Beijing Municipality funding grant (no. 7161005 to Xiang’en Shi) and a Capital Foundation of Medical Development grant (no. Z161100000516019 to Xiang’en Shi).

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

Ethical approval

All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee (Beijing Municipal Science and Technology Commission) and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards.

Patient consent

Written informed consent was obtained from all patients included in this study.

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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Department of Neurosurgery, Fuxing HospitalCapital Medical UniversityBeijingPeople’s Republic of China
  2. 2.Department of Neurosurgery, Sanbo Brain HospitalCapital Medical UniversityBeijingChina

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