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Eun J, Park IS. Assessing the Adequacy of Superficial Temporal Artery Blood Flow in Korean Patients Undergoing STA-MCA Anastomosis. J Korean Neurosurg Soc 2024; 67:158-165. [PMID: 37678413 PMCID: PMC10924909 DOI: 10.3340/jkns.2023.0125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Revised: 08/21/2023] [Accepted: 09/04/2023] [Indexed: 09/09/2023] Open
Abstract
OBJECTIVE Superficial temporal artery (STA)-middle cerebral artery (MCA) anastomosis is conducted for flow augmentation. In this study, we measured the STA cut flow of a Korean population and evaluated the relationship between STA cut flow and long-term patency of the bypass. METHODS A retrospective study was conducted. Intraoperative measurement of STA flow was conducted using a microvascular flow meter on patients who underwent STA-MCA. After cutting the distal end, the STA flow rate was measured with no resistance and recorded. After finishing anastomosis, STA flow was measured and recorded. The cut flow index was calculated by dividing post anastomosis flow by cut flow in intracranial atherosclerotic stenosis patients. RESULTS The median STA cut flow was 35.0 mL/min and the post anastomosis flow was 24.0 mL/min. The cut flow of STA decreased with aging (p=0.027) and increased with diameter (p=0.004). The cut flow showed no correlation with history of hypertension or diabetes mellitus (p=0.713 and p=0.786), but did correlate a positively with history of hyperlipidemia (p=0.004). There were no statistical differences in cut flow, STA diameter, and post anastomosis flow between the frontal and parietal branches (p=0.081, p=0.853, and p=0.990, respectively). CONCLUSION The median STA cut flow of a Korean population was 35 mL/min. Upon reviewing previous articles, it appears that there are differences in the STA cut flow between Western and Asian patients.
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Affiliation(s)
- Jin Eun
- Department of Neurosurgery, Eunpyeong St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Ik Seong Park
- Department of Neurosurgery, Bucheon St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
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Wen Y, Gou Y, Wang B, Wang Z, Chen S, Zhang S, Zhang G, Li M, Feng W, Qi S, Wang G. Is
STA
really a low‐flow graft? A quantitative ultrasonographic study of the flow of
STA
for cerebral revascularization in
MMD
patients. CNS Neurosci Ther 2023. [PMID: 37002791 PMCID: PMC10401118 DOI: 10.1111/cns.14197] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2022] [Revised: 03/06/2023] [Accepted: 03/21/2023] [Indexed: 04/04/2023] Open
Abstract
OBJECTIVE Direct revascularization remains an important tool in the treatment of patients with Moyamoya disease (MMD). The superficial temporal artery (STA) is the most commonly used donor vessel for direct bypass, and an STA graft has traditionally been considered a low-flow graft for flow augmentation. This study aimed to quantitatively evaluate the blood flow of the STA after direct revascularization. METHODS All direct revascularization procedures performed between 2018 and 2021 by one experienced neurosurgeon were screened. Quantitative ultrasound was used to measure the flow data of the patient's bilateral parietal branch of the STA(STA-PB), the bilateral frontal branch of the STA(STA-FB), and the left radial artery. Data on the patients' basic information, Suzuki grade, Matsushima type, anastomosis type, and blood biochemical parameters were collected and analyzed using univariate and multivariate models. An MBC Scale scoring system was proposed to evaluate the recipient artery network of the middle cerebral artery (MCA) tree. The relationship between MBC Scale score and STA graft flow was statistically analyzed. RESULTS In total, 81 patients (43 males and 38 females) successfully underwent STA-MCA bypass and were included in this study. The mean flow rates in the STA-PB graft on 1 day preoperatively, 1 day postoperatively, 7 days postoperatively, and >6 months postoperatively (long-term) were 10.81, 116.74, 118.44, and 56.20 mL/min respectively. Intraoperative graft patency was confirmed in all patients. Comparing the preoperative and all postoperative time points, the STA-PB flow rates were statistically significant (p < 0.001). The MCA-C score was significantly associated with postoperative flow rate on day 1 (p = 0.007). CONCLUSION The STA is a useful donor artery for direct revascularization inpatients with MMD and can provide sufficient blood supply to the ischemic cerebral territory.
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Affiliation(s)
- Yunyu Wen
- Department of Neurosurgery, Nanfang Hospital Southern Medical University Guangzhou Guangdong China
- Laboratory for Precision Neurosurgery, Nanfang Hospital Southern Medical University Guangzhou Guangdong China
| | - Yanxia Gou
- Department of Stomatology, Nanfang Hospital Southern Medical University Guangzhou Guangdong China
| | - Baoping Wang
- Department of Ultrasound, Nanfang Hospital Southern Medical University Guangzhou Guangdong China
| | - Zhibin Wang
- Department of Neurosurgery, Nanfang Hospital Southern Medical University Guangzhou Guangdong China
- Laboratory for Precision Neurosurgery, Nanfang Hospital Southern Medical University Guangzhou Guangdong China
| | - Siyuan Chen
- Department of Neurosurgery, Nanfang Hospital Southern Medical University Guangzhou Guangdong China
- Laboratory for Precision Neurosurgery, Nanfang Hospital Southern Medical University Guangzhou Guangdong China
| | - Shichao Zhang
- Department of Neurosurgery, Nanfang Hospital Southern Medical University Guangzhou Guangdong China
- Laboratory for Precision Neurosurgery, Nanfang Hospital Southern Medical University Guangzhou Guangdong China
| | - Guozhong Zhang
- Department of Neurosurgery, Nanfang Hospital Southern Medical University Guangzhou Guangdong China
- Laboratory for Precision Neurosurgery, Nanfang Hospital Southern Medical University Guangzhou Guangdong China
| | - Mingzhou Li
- Department of Neurosurgery, Nanfang Hospital Southern Medical University Guangzhou Guangdong China
- Laboratory for Precision Neurosurgery, Nanfang Hospital Southern Medical University Guangzhou Guangdong China
| | - Wenfeng Feng
- Department of Neurosurgery, Nanfang Hospital Southern Medical University Guangzhou Guangdong China
- Laboratory for Precision Neurosurgery, Nanfang Hospital Southern Medical University Guangzhou Guangdong China
| | - Songtao Qi
- Department of Neurosurgery, Nanfang Hospital Southern Medical University Guangzhou Guangdong China
- Laboratory for Precision Neurosurgery, Nanfang Hospital Southern Medical University Guangzhou Guangdong China
| | - Gang Wang
- Department of Neurosurgery, Nanfang Hospital Southern Medical University Guangzhou Guangdong China
- Laboratory for Precision Neurosurgery, Nanfang Hospital Southern Medical University Guangzhou Guangdong China
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Wang X, Liu H, Xu M, Chen C, Ma L, Dai F. Efficacy assessment of superficial temporal artery-middle cerebral artery bypass surgery in treating moyamoya disease from a hemodynamic perspective: a pilot study using computational modeling and perfusion imaging. Acta Neurochir (Wien) 2023; 165:613-623. [PMID: 36595057 DOI: 10.1007/s00701-022-05455-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Accepted: 12/05/2022] [Indexed: 01/04/2023]
Abstract
BACKGROUND Superficial temporal artery-middle cerebral artery (STA-MCA) bypass is a common surgery in treating moyamoya disease (MMD) with occluded MCA. Computational fluid dynamics (CFD) simulation might provide a simple, non-invasive, and low-cost tool to evaluate the efficacy of STA-MCA surgery. AIM We aim to quantitatively investigate the treatment efficacy of STA-MCA surgery in improving the blood flow of MMD patients using CFD simulation. METHODS This retrospective study included 11 MMD patients with occlusion around proximal MCA who underwent STA-MCA bypass surgery. CFD simulation was performed using patient-specific blood pressure and postoperative artery geometry. The volumetric flow rates of STA and the bypass, average flow velocity in the proximal segment of transcranial bypass, transcranial pressure drop, and transcranial flow resistance were measured and compared with a postoperative increment of cerebral blood flow (CBF) in MCA territories derived from perfusion imaging. Per-branch pressure drop from model inlet to bypass branch outlet was calculated. RESULTS The volumetric flow rates of STA and the bypass were 80.84 ± 14.54 mL/min and 46.03 ± 4.21 mL/min. Average flow velocity in proximal bypass, transcranial pressure drop, and transcranial flow resistance were 0.19 ± 0.07 m/s, 3.72 ± 3.10 mmHg, and 6.54 ± 5.65 10-8 Pa s m-3. Postoperative mean increment of CBF in MCA territories was 16.03 ± 11.72 mL·100 g-1·min-1. Per-branch pressure drop was 10.96 ± 5.59 mmHg and 7.26 ± 4.25 mmHg in branches with and without stenosis. CONCLUSIONS CFD simulation results are consistent with CBF observation in verifying the efficacy of STA-MCA bypass, where postoperative stenosis may influence the hemodynamics.
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Affiliation(s)
- Xinhong Wang
- Department of Radiology, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310009, Zhejiang Province, China.
| | - Haipeng Liu
- Research Centre for Intelligent Healthcare, Coventry University, Coventry, CV1 5FB, UK.
| | - Mengxi Xu
- Department of Radiology, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310009, Zhejiang Province, China
| | - Cong Chen
- Department of Radiology, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310009, Zhejiang Province, China
| | - Linlin Ma
- Department of Radiology, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310009, Zhejiang Province, China
| | - Fangyu Dai
- Department of Neurology, Zhoushan Hospital, Wenzhou Medical University, Zhoushan, 316000, Zhejiang Province, China
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Chen S, Wang B, Wen Y, Wang Z, Long T, Chen J, Zhang G, Li M, Zhang S, Pan J, Feng W, Qi S, Wang G. Ultrasonic hemodynamic changes of superficial temporal artery graft in different angiogenesis outcomes of Moyamoya disease patients treated with combined revascularization surgery. Front Neurol 2023; 14:1115343. [PMID: 36873438 PMCID: PMC9978192 DOI: 10.3389/fneur.2023.1115343] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2022] [Accepted: 01/25/2023] [Indexed: 02/18/2023] Open
Abstract
Objective Combined bypass is commonly used in adult Moyamoya disease (MMD) for revascularization purposes. The blood flow from the external carotid artery system supplied by the superficial temporal artery (STA), middle meningeal artery (MMA), and deep temporal artery (DTA) can restore the impaired hemodynamics of the ischemic brain. In this study we attempted to evaluate the hemodynamic changes of the STA graft and predict the angiogenesis outcomes in MMD patients after combined bypass surgery by using quantitative ultrasonography. Methods We retrospectively studied Moyamoya patients who were treated by combined bypass between September 2017 and June 2021 in our hospital. We quantitatively measured the STA with ultrasound and recorded the blood flow, diameter, pulsatility index (PI) and resistance index (RI) to assess graft development preoperatively and at 1 day, 7 days, 3 months, and 6 months after surgery. All patients received both pre- and post- operative angiography evaluation. Patients were divided into either well- or poorly-angiogenesis groups according to the transdural collateral formation status on angiography at 6 months after surgery (W group or P group). Patients with matshushima grade A or B were divided into W group. Patients with matshushima grade C were divided into P group, indicating a poor angiogenesis development. Results A total of 52 patients with 54 operated hemispheres were enrolled, including 25 men and 27 women with an average age of 39 ± 14.3 years. Compared to preoperative values, the average blood flow of an STA graft at day 1 postoperation increased from 16.06 ± 12.47 to 117.47± 73.77 (mL/min), diameter increased from 1.14 ± 0.33 to 1.81 ± 0.30 (mm), PI dropped from 1.77 ± 0.42 to 0.76 ± 0.37, and RI dropped from 1.77 ± 0.42 to 0.50 ± 0.12. According to the Matsushima grade at 6 months after surgery, 30 hemispheres qualified as W group and 24 hemispheres as P group. Statistically significant differences were found between the two groups in diameter (p = 0.010) as well as flow (p = 0.017) at 3 months post-surgery. Flow also remained significantly different at 6 months after surgery (p = 0.014). Based on GEE logistic regression evaluation, the patients with higher levels of flow post-operation were more likely to have poorly-compensated collateral. ROC analysis showed that increased flow of ≥69.5 ml/min (p = 0.003; AUC = 0.74) or a 604% (p = 0.012; AUC = 0.70) increase at 3 months post-surgery compared with the pre-operative value is the cut-off point which had the highest Youden's index for predicting P group. Furthermore, a diameter at 3 months post-surgery that is ≥0.75 mm (p = 0.008; AUC = 0.71) or 52% (p =0.021; AUC = 0.68) wider than pre-operation also indicates a high risk of poor indirect collateral formation. Conclusions The hemodynamic of the STA graft changed significantly after combined bypass surgery. An increased flow of more than 69.5 ml/min at 3 months was a good predictive factor for poor neoangiogenesis in MMD patients treated with combined bypass surgery.
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Affiliation(s)
- Siyuan Chen
- Department of Neurosurgery, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Baoping Wang
- Department of Ultrasonography, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Yunyu Wen
- Department of Neurosurgery, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Zhibin Wang
- Department of Neurosurgery, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Tinghan Long
- Department of Neurosurgery, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Junda Chen
- Department of Neurosurgery, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Guozhong Zhang
- Department of Neurosurgery, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Mingzhou Li
- Department of Neurosurgery, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Shichao Zhang
- Department of Neurosurgery, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Jun Pan
- Department of Neurosurgery, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Wenfeng Feng
- Department of Neurosurgery, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Songtao Qi
- Department of Neurosurgery, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Gang Wang
- Department of Neurosurgery, Nanfang Hospital, Southern Medical University, Guangzhou, China
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Wang G, Zhang X, Gou Y, Wen Y, Zhang G, Li M, Zhang S, Yin Y, Chen S, Qi S, Feng W. A Hybrid Strategy for Patients With Complex Cerebral Aneurysm: STA-MCA Bypass in Combination With Endovascular Embolization. Front Neurol 2021; 11:614601. [PMID: 33519692 PMCID: PMC7844085 DOI: 10.3389/fneur.2020.614601] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Accepted: 11/27/2020] [Indexed: 12/16/2022] Open
Abstract
Objective: This work aims to present our experience of patients with complex cerebral aneurysm treated with a hybrid approach: superficial temporal artery–middle cerebral artery (STA–MCA) bypass in combination with endovascular exclusion of the aneurysm. Method: Patients with aneurysms deemed unclippable and uncoilable were included. All patients were treated with a hybrid approach. After STA–MCA bypass, the parent artery was temporarily occluded. If the intraoperative motor evoked potential (MEP) and somatosensory evoked potential (SEP) waveforms remain normal and last for 30 min, the aneurysm and te parent artery will be embolized permanently with detachable balloons or coils. Results: A total of 20 patients with 22 aneurysms were included in this study. There were 13 women and 7 men, with an average age of 42.5 years. Intraoperative angiography showed the good patency of all the STA grafts, and neither SEP nor MEP abnormalities were detected. After the parent artery and the aneurysm were occluded, the intraoperative angiography showed an immediately successful exclusion of the aneurysm in 20 aneurysms and immediate contrast stasis in two. All patients recovered uneventfully without ischemic or hemorrhagic complication. Angiography at 6-month follow-up showed the total obliteration in 20 aneurysms. Two aneurysms showed residuals and were recoiled. All STA grafts showed a good patency, and the mean graft flow was 124.2 ml/min. Conclusion: STA–MCA bypass in combination with endovascular exclusion is an appropriate option for patients with complex cerebral aneurysms that are not amenable to direct surgical clipping or endovascular embolization.
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Affiliation(s)
- Gang Wang
- Department of Neurosurgery, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Xi'an Zhang
- Department of Neurosurgery, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Yanxia Gou
- Department of Anesthesiology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Yunyu Wen
- Department of Neurosurgery, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Guozhong Zhang
- Department of Neurosurgery, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Mingzhou Li
- Department of Neurosurgery, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Shichao Zhang
- Department of Neurosurgery, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Yanyi Yin
- Department of Neurosurgery, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Siyuan Chen
- Department of Neurosurgery, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Songtao Qi
- Department of Neurosurgery, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Wenfeng Feng
- Department of Neurosurgery, Nanfang Hospital, Southern Medical University, Guangzhou, China
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