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Article: [COLUMN: Spirit for Prevention of Surgical Site Infection(SSI)in Neurosurgery].

Yasuhara, Takao / Date, Isao

2022 Volume 50, Issue 5, Page(s) 1095–1098

MeSH term(s)	Humans ; Neurosurgery ; Neurosurgical Procedures ; Risk Factors ; Surgical Wound Infection/prevention & control
Language	Japanese
Publishing date	2022-09-21
Publishing country	Japan
Document type	Journal Article
ZDB-ID	197053-7
ISSN	1882-1251 ; 0301-2603
ISSN (online)	1882-1251
ISSN	0301-2603
DOI	10.11477/mf.1436204670
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Article: [Surgical Tips and Precautions for Supratentorial Tumors in Children].

Ishida, Joji / Date, Isao

No shinkei geka. Neurological surgery

2022 Volume 50, Issue 6, Page(s) 1314–1322

Abstract: Pediatric brain tumors account for approximately 15% of all pediatric cancers. Approximately half of the cases are malignant, and entail postoperative radiation therapy and chemotherapy. Herein, we describe perioperative tips and precautions for ... ...

Abstract	Pediatric brain tumors account for approximately 15% of all pediatric cancers. Approximately half of the cases are malignant, and entail postoperative radiation therapy and chemotherapy. Herein, we describe perioperative tips and precautions for pediatric supratentorial tumors other than suprasellar tumors from our institution. Postoperative cerebrospinal fluid issues are especially prevalent in children, and three representative cases have been presented for discussion. Further, skull closure deems close attention, being crucial for children's future growth, in terms of a cosmetic aspect.
MeSH term(s)	Child ; Humans ; Supratentorial Neoplasms/surgery ; Brain Neoplasms/surgery
Language	Japanese
Publishing date	2022-11-18
Publishing country	Japan
Document type	English Abstract ; Journal Article
ZDB-ID	197053-7
ISSN	1882-1251 ; 0301-2603
ISSN (online)	1882-1251
ISSN	0301-2603
DOI	10.11477/mf.1436204697
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Article: [Evidence of Efficacy of Superficial Temporal Artery-Middle Cerebral Artery Bypass in Japan].

Hishikawa, Tomohito / Date, Isao

No shinkei geka. Neurological surgery

2022 Volume 50, Issue 4, Page(s) 745–751

Abstract: The Japanese EC-IC Bypass Trial(JET)Study demonstrated that a superficial temporal artery-middle cerebral artery(STA-MCA)bypass is effective in preventing the recurrence of ischemic stroke in cases of atherosclerotic internal carotid artery or MCA steno- ... ...

Abstract	The Japanese EC-IC Bypass Trial(JET)Study demonstrated that a superficial temporal artery-middle cerebral artery(STA-MCA)bypass is effective in preventing the recurrence of ischemic stroke in cases of atherosclerotic internal carotid artery or MCA steno-occlusive lesions with symptoms. The JET-2 Study revealed that the hemodynamic criteria for STA-MCA bypass in the JET Study(rest cerebral blood flow < 80% and cerebrovascular reactivity < 10%)were adequate. An STA-MCA bypass was ranked as recommendation B; the level of evidence was moderate under the conditions of quantitative evaluation of cerebral hemodynamics and low frequency of perioperative complications, as described in the Japanese Guidelines for the Management of Stroke 2021. An education system for the accurate assessment of cerebral hemodynamics, meticulous surgical procedures, and perioperative management for STA-MCA bypass is necessary to hand over evidence of STA-MCA bypass efficacy in Japan to future generations. Simultaneously, new evidence of STA-MCA bypass efficacy should be explored with the advancement of medicine and should be disseminated worldwide.
MeSH term(s)	Cerebral Revascularization/methods ; Cerebrovascular Circulation/physiology ; Humans ; Japan ; Middle Cerebral Artery/surgery ; Temporal Arteries/surgery
Language	Japanese
Publishing date	2022-08-10
Publishing country	Japan
Document type	Journal Article
ZDB-ID	197053-7
ISSN	1882-1251 ; 0301-2603
ISSN (online)	1882-1251
ISSN	0301-2603
DOI	10.11477/mf.1436204616
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Article: [Essential Tremor That is Difficult to Improve with Standard Medical Treatment-Suppression: Surgical Treatment of Tremor].

Sasaki, Tatsuya / Date, Isao

Brain and nerve = Shinkei kenkyu no shinpo

2022 Volume 74, Issue 5, Page(s) 645–651

Abstract: Drug-refractory essential tremors, especially those in the upper extremities, may benefit from surgical treatment. Currently, three main treatment methods are available: deep brain stimulation (DBS), radiofrequency coagulation (RF), and magnetic ... ...

Abstract	Drug-refractory essential tremors, especially those in the upper extremities, may benefit from surgical treatment. Currently, three main treatment methods are available: deep brain stimulation (DBS), radiofrequency coagulation (RF), and magnetic resonance -guided focused ultrasound surgery (MRgFUS). DBS is a device-based therapy, and its effects are reversible, whereas RF and FUS create irreversible coagulation lesions. DBS and RF require the direct puncturing of the target, whereas FUS focuses ultrasound from extracranial sources. The primary target is the ventralis intermedius of the thalamus (Vim); however, the posterior subthalamic area (PSA) is also reportedly an effective target site. In this article, we will summarize the features of the three treatments for essential tremors, and discuss the treatment strategies and methods for each symptom.
MeSH term(s)	Deep Brain Stimulation/methods ; Essential Tremor/surgery ; Humans ; Thalamus/diagnostic imaging ; Thalamus/surgery ; Treatment Outcome ; Tremor/surgery
Language	Japanese
Publishing date	2022-05-16
Publishing country	Japan
Document type	Journal Article
ZDB-ID	390389-8
ISSN	1344-8129 ; 1881-6096 ; 0006-8969
ISSN (online)	1344-8129
ISSN	1881-6096 ; 0006-8969
DOI	10.11477/mf.1416202092
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Article ; Online: Evaluation of the shrinkage process of a neck remnant after stent-coil treatment of a cerebral aneurysm using silent magnetic resonance angiography and computational fluid dynamics analysis: illustrative case.

Satoh, Toru / Sugiu, Kenji / Hiramatsu, Masafumi / Haruma, Jun / Date, Isao

Journal of neurosurgery. Case lessons

2024 Volume 7, Issue 16

Abstract: Background: Silent magnetic resonance angiography (MRA) mitigates metal artifacts, facilitating clear visualization of neck remnants after stent and coil embolization of cerebral aneurysms. This study aims to scrutinize hemodynamics at the neck remnant ... ...

Abstract	Background: Silent magnetic resonance angiography (MRA) mitigates metal artifacts, facilitating clear visualization of neck remnants after stent and coil embolization of cerebral aneurysms. This study aims to scrutinize hemodynamics at the neck remnant by employing silent MRA and computational fluid dynamics. Observations: The authors longitudinally tracked images of a partially thrombosed anterior communicating artery aneurysm's neck remnant, which had been treated with stent-assisted coil embolization, using silent MRA over a decade. Computational fluid dynamics delineated the neck remnant's reduction process, evaluating hemodynamic parameters such as flow rate, wall shear stress magnitude and vector, and streamlines. The neck remnant exhibited diminishing surface area, volume, neck size, dome depth, and aspect ratio. Its reduction correlated with a decline in the flow rate ratio of the remnant dome to the inflow parent artery. Analysis delineated regions within the contracting neck remnant characterized by consistently low average wall shear stress magnitude and variation, accompanied by notable variations in wall shear stress vector directionality. Lessons: Evaluation of neck remnants after stent-coil embolization is possible through silent MRA and computational fluid dynamics. Predicting the neck remnant reduction may be achievable through hemodynamic parameter analysis.
Language	English
Publishing date	2024-04-15
Publishing country	United States
Document type	Journal Article
ISSN	2694-1902
ISSN (online)	2694-1902
DOI	10.3171/CASE24141
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Article ; Online: Trigeminal neuralgia caused by a persistent primitive trigeminal artery: preoperative three-dimensional multifusion imaging and computational fluid dynamics analysis. Illustrative case.

Satoh, Toru / Yasuhara, Takao / Umakoshi, Michiari / Date, Isao

Journal of neurosurgery. Case lessons

2023 Volume 5, Issue 19

Abstract: Background: Trigeminal neuralgia (TN) is caused by trigeminal nerve compression by colliding vessels. Preoperative three-dimensional (3D) multifusion images are useful for surgical simulations. Moreover, computational fluid dynamics (CFD) analysis of ... ...

Abstract	Background: Trigeminal neuralgia (TN) is caused by trigeminal nerve compression by colliding vessels. Preoperative three-dimensional (3D) multifusion images are useful for surgical simulations. Moreover, computational fluid dynamics (CFD) analysis of colliding vessels may be useful for hemodynamic evaluation at the site of neurovascular contact (NVC). Observations: A 71-year-old woman had TN due to compression of the trigeminal nerve by the superior cerebellar artery (SCA) fused with the persistent primitive trigeminal artery (PTA). Preoperative 3D multifusion simulation images of silent magnetic resonance (MR) angiography and MR cisternography depicted the NVC, including the trigeminal nerve, SCA, and PTA. CFD analysis revealed the hemodynamic condition of the NVC, including the SCA and PTA. The wall shear stress magnitude (WSSm) at the NVC showed a local elevation due to flow confluence from the SCA and PTA. High WSSm was observed in the NVC. Lessons: Preoperative simulation images of MR angiography and MR cisternography may depict the NVC. CFD analysis can provide the hemodynamic condition at the NVC.
Language	English
Publishing date	2023-05-08
Publishing country	United States
Document type	Journal Article
ISSN	2694-1902
ISSN (online)	2694-1902
DOI	10.3171/CASE2381
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Article: A Case of High-Grade Glioma in an Eloquent Area Treated with Awake Craniotomy in an 85-year-old Patient.

Fujii, Kentaro / Hirano, Shuichiro / Kurozumi, Kazuhiko / Date, Isao

Acta medica Okayama

2023 Volume 77, Issue 3, Page(s) 335–340

Abstract: An 85-year-old woman presented with aphasia due to an occupying lesion in the left frontal lobe near the language area. Complete resection of the contrast-enhancing lesion was performed under awake conditions. The pathological diagnosis was anaplastic ... ...

Abstract	An 85-year-old woman presented with aphasia due to an occupying lesion in the left frontal lobe near the language area. Complete resection of the contrast-enhancing lesion was performed under awake conditions. The pathological diagnosis was anaplastic astrocytoma, and postoperative radiochemotherapy was administered. Awake surgery is a useful technique to reduce postoperative neurological sequelae and to maximize surgical resection. Although the patient was elderly, which is generally considered high risk, she did not have any severe neurological deficits and had a good outcome. Even in the extreme elderly, awake surgery can be useful for gliomas in language cortices.
MeSH term(s)	Female ; Humans ; Aged ; Aged, 80 and over ; Brain Neoplasms/surgery ; Brain Neoplasms/diagnosis ; Brain Neoplasms/pathology ; Wakefulness ; Monitoring, Intraoperative/methods ; Brain Mapping/methods ; Glioma/surgery ; Glioma/pathology ; Craniotomy
Language	English
Publishing date	2023-06-23
Publishing country	Japan
Document type	Case Reports
ZDB-ID	188415-3
ISSN	0386-300X ; 0001-6152
ISSN	0386-300X ; 0001-6152
DOI	10.18926/AMO/65504
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Article: [Surgical Site Infection(SSI)in Neurosurgery].

Yasuhara, Takao / Date, Isao

No shinkei geka. Neurological surgery

2021 Volume 49, Issue 5, Page(s) 1093–1104

Abstract: Although surgical site infections(SSIs)are usually controllable, their occasional occurrence is unavoidable. SSIs in neurosurgery comprise surgical-wound infections and surgical-organ/space infections. Data from the Japan Nosocomial Infections ... ...

Abstract	Although surgical site infections(SSIs)are usually controllable, their occasional occurrence is unavoidable. SSIs in neurosurgery comprise surgical-wound infections and surgical-organ/space infections. Data from the Japan Nosocomial Infections Surveillance revealed an overall infection rate of 1.1% during the first half of 2020. Responses to two questionnaire-based surveys on SSI prevention and complications related to cranial implant/artificial bone revealed the real world situation in neurosurgery. In 2020, neurosurgical information was added to the practical guidelines concerning the proper use of prophylactic antibacterial drug for SSIs. COVID-19 hygiene control protocols may have reduced the incidence of SSIs. It may be prudent to continue this stringent hygiene control after the COVID-19 pandemic has abated. Information of medical material on SSI is presented in this article, including the Plus suture
MeSH term(s)	COVID-19 ; Humans ; Neurosurgery ; Neurosurgical Procedures/adverse effects ; Pandemics ; SARS-CoV-2 ; Surgical Wound Infection/epidemiology ; Surgical Wound Infection/prevention & control
Language	Japanese
Publishing date	2021-10-06
Publishing country	Japan
Document type	Journal Article
ZDB-ID	197053-7
ISSN	1882-1251 ; 0301-2603
ISSN (online)	1882-1251
ISSN	0301-2603
DOI	10.11477/mf.1436204493
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Article: [Programing of Deep Brain Stimulation and Features of Devices].

Sasaki, Tatsuya / Date, Isao

No shinkei geka. Neurological surgery

2021 Volume 49, Issue 4, Page(s) 829–837

Abstract: Deep brain stimulation(DBS)is an effective therapy for conditions involving drug-resistant involuntary movements, such as Parkinson's disease, tremor, and dystonia. Programming of DBS, as well as strict surgical indications, appropriate target selection, ...

Abstract	Deep brain stimulation(DBS)is an effective therapy for conditions involving drug-resistant involuntary movements, such as Parkinson's disease, tremor, and dystonia. Programming of DBS, as well as strict surgical indications, appropriate target selection, and accurate electrode placement, is one of the most important factors in the success of DBS. To obtain effective stimulation for a long period, it is important to expand the therapeutic window and reduce side effects. Recent advances in DBS devices have dramatically expanded the variety of stimulus settings. While the indication criteria of DBS and surgical techniques have been established, the details of the programming algorithm are not yet unified. In this paper, we describe the features of each device, basic programming methods, management of DBS-related side effects, and advanced stimulus methods.
MeSH term(s)	Algorithms ; Deep Brain Stimulation ; Dystonia/therapy ; Humans ; Parkinson Disease/therapy ; Tremor/therapy
Language	Japanese
Publishing date	2021-08-10
Publishing country	Japan
Document type	Journal Article
ZDB-ID	197053-7
ISSN	1882-1251 ; 0301-2603
ISSN (online)	1882-1251
ISSN	0301-2603
DOI	10.11477/mf.1436204461
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Article ; Online: Inverted gull-wing hinge decompressive craniotomy for infantile acute subdural hematoma: A case report.

Okuma, Yu / Yasuhara, Takao / Kin, Ittetsu / Daido, Shigeru / Date, Isao

Brain circulation

2023 Volume 9, Issue 1, Page(s) 35–38

Abstract: Infantile severe acute subdural hematomas (ASDHs) usually require a decompressive craniotomy. However, these infantile patients often suffer surgical site infection and aseptic bone-flap resorption after external decompression. In this report, we showed ... ...

Abstract	Infantile severe acute subdural hematomas (ASDHs) usually require a decompressive craniotomy. However, these infantile patients often suffer surgical site infection and aseptic bone-flap resorption after external decompression. In this report, we showed a case of a simplified hinge decompressive craniotomy in an infant with severe ASDH. A 2-month-old girl suffered from status epilepticus, impaired consciousness, multiple rib fractures, bilateral fundus hemorrhage, and a right ASDH. We performed a simplified hinge decompressive craniotomy, making a vascularized bone flap with a hinge using the partial temporal bone and temporal muscle and not fixing the bone flap like an inverted gull wing. Cranioplasty was performed 4 weeks after the decompression craniotomy with replaced resorbable substitute dura. Six months after the transfer, her development was generally in line with her age. The decompressive craniotomy with an inverted gull-wing hinge has shown a good outcome.
Language	English
Publishing date	2023-03-24
Publishing country	India
Document type	Case Reports
ZDB-ID	2950273-1
ISSN	2455-4626 ; 2394-8108
ISSN (online)	2455-4626
ISSN	2394-8108
DOI	10.4103/bc.bc_69_22
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