Abstract
Long-term patency of superficial temporal artery to middle cerebral artery (STA–MCA) bypass surgery for atherosclerotic disease and associated risk factors for loss of patency have rarely been discussed. We retrospectively analyzed long-term patency following STA–MCA bypass and evaluated various demographic and clinical factors to identify the ones predictive of postsurgical loss of patency using records of 84 revascularization procedures (58 patients, 45 males; mean age at surgery 63.6 years, range 31–78 years). Bypass patency was diagnosed based on magnetic resonance angiography or three-dimensional computed tomography. The mean follow-up period was 24.7 months (range 6–63 months). Decreased bypass patency was observed in 4 of 58 patients (6.9 %) who collectively underwent 6 bypasses (7.1 %) of 84. All cases of decreased bypass patency were first detected within 6 months of surgery. Bypass patency was not correlated with age, sex, number of anastomoses, postoperative cerebral infarction, or control of postoperative diabetes mellitus. We found a significant association of bypass patency with hyperperfusion (p = 0.01) and postoperative smoking (p = 0.0036). Furthermore, we found a significant association of hyperperfusion with STA diameter (p < 0.0001), location of anastomosis (p = 0.075), and preoperative cerebral blood flow (p = 0.0399). In our retrospective study, hyperperfusion and smoking after surgery may be risk factors for decreased bypass patency in cerebral atherosclerotic disease patients. Careful monitoring of patency to prevent hyperperfusion and cessation of smoking are recommended, particularly within 6 months of the surgery.
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Abbreviations
- BBB :
-
breakdown of the blood–brain barrier
- CBF :
-
cerebral blood flow
- DWI :
-
MRI diffusion-weighted magnetic resonance angiography
- ET :
-
endothelin
- IMP :
-
SPECT N-isopropyl (123 I)-p-isodoamphetamine single-photon emission computed tomography
- MRA :
-
magnetic resonance angiography
- NO :
-
nitric oxide
- STA–MCA :
-
superficial temporal artery to middle cerebral artery
- 3D :
-
CTA three-dimensional computed tomography
- ROS :
-
reactive oxygen species
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Matano, F., Murai, Y., Tateyama, K. et al. Long-term patency of superficial temporal artery to middle cerebral artery bypass for cerebral atherosclerotic disease: factors determining the bypass patent. Neurosurg Rev 39, 655–661 (2016). https://doi.org/10.1007/s10143-016-0736-5
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DOI: https://doi.org/10.1007/s10143-016-0736-5