Predictors of Ventriculostomy-Associated Infections: A Retrospective Study of 243 Patients.

Objective: Risk factors of ventriculostomy-associated infection (VAI) reported in the literature are variable owing to heterogeneity of external ventricular drainage (EVD) procedures and management. This study aimed to assess the rate of VAI and its risk factors.

Methods: The medical records of patients >18 years old who received EVD catheterizations between January 2015 and December 2020 were retrospectively reviewed.

Recurrence and risk factors of posterior communicating artery aneurysms after endovascular treatment.

Background: Endovascular treatment (EVT) of posterior communicating artery aneurysms (PcomA) is challenging because of posterior communicating artery (Pcom) architecture. Additionally, these aneurysms have a high risk of recanalization compared with those located elsewhere.

Methods: The radiographic findings of 171 patients treated with EVT at two institutions were retrospectively reviewed.

Evaluation of the angiographic outcomes after clipping of intracranial aneurysms: determination of predisposing factors for occurrence of aneurysm remnants.

: Aneurysm remnants after microsurgical clipping have a risk of regrowth and rupture and have not been validated in the era of three-dimensional angiography. Therefore, this study aimed to evaluate the angiographic outcome using three-dimensional rotational images and determine the predictors for remnants after microsurgical clipping.: Between January 2014 and May 2017, 139 aneurysms in 106 patients who were treated with microsurgical clipping, were eligible for this study.

Rete middle cerebral artery anomalies: a unifying name, case series, and literature review.

Objective: Rete middle cerebral artery (MCA) is extremely rare and has not been frequently discussed. Rete MCA is a weblike anomaly of the MCA that does not coalesce and forms a prominent, large single branch from the plexiform vessels in the fetal stage. The purpose of this study was to further elucidate the clinical and radiological characteristics of patients with rete MCA.

Radiographic and microsurgical characteristics of proximal (A1) segment aneurysms of the anterior cerebral artery.

Background: Proximal A1 segment aneurysms of the anterior cerebral artery (ACA) radiologically resemble internal carotid artery bifurcation (ICBIF) aneurysms because of their anatomical proximity. However, proximal A1 aneurysms exhibit distinguishing features, relative to ICBIF aneurysms. We report our experience of managing proximal A1 aneurysms, then compare them to ICBIF aneurysms.

Post-traumatic headache in patients with minimal traumatic intracranial hemorrhage after traumatic brain injury: a retrospective matched case-control study.

Background: No evidence is available on the risks of neurologically asymptomatic minimal traumatic intracranial hemorrhage (mTIH) in patients with traumatic brain injury (TBI) for post-traumatic headache (PTH). The purpose of this study was to investigate whether mTIH in patients with TBI was associated with PTH and to evaluate its risk factors.

Methods: Between September 2009 and December 2014, 1484 patients with TBI were treated at our institution, 57 of whom had mTIH after TBI and were include in this study.

Preventive Effect of Clazosentan against Cerebral Vasospasm after Clipping Surgery for Aneurysmal Subarachnoid Hemorrhage in Japanese and Korean Patients.

Background: Clazosentan has been explored worldwide for the prophylaxis of cerebral vasospasm after aneurysmal subarachnoid hemorrhage (aSAH). In a dose-finding trial (CONSCIOUS-1) conducted in Israel, Europe, and North America, clazosentan (1, 5, and 15 mg/h) significantly reduced the incidence of cerebral vasospasm, but its efficacy in Japanese and Korean patients was unknown. We conducted a double-blind comparative study to evaluate the occurrence of cerebral vasospasm in Japanese and Korean patients with aSAH.

The course of headache in patients with moderate-to-severe headache due to mild traumatic brain injury: a retrospective cross-sectional study.

Background: Little is known about the long-term course of headache in patients with moderate-to-severe headache due to traumatic brain injury (TBI). We evaluated the course of headache in patients with moderate-to-severe headache due to mild TBI.

Methods: Since September 2009, patients with TBI prospectively rated their headache using a numeric rating scale (NRS).

Perimesencephalic Nonaneurysmal Subarachnoid Hemorrhage After Clipping of an Unruptured Aneurysm.

Background: Perimesencephalic nonaneurysmal subarachnoid hemorrhage (PNSAH) is a benign form of subarachnoid hemorrhage with an excellent clinical outcome. The cause of PNSAH remains unknown. We report a case of PNSAH in a patient with a history of clipping of an unruptured aneurysm.

Multidisciplinary management for the treatment of proximal posterior inferior cerebellar artery aneurysms.

Objectives: Aneurysms of the proximal posterior inferior cerebellar artery (PICA) are rare. The management of proximal PICA aneurysms is challenging with either surgical or endovascular treatment. We report our successful experience of treating PICA aneurysms with a multimodal approach.

Borderline basal ganglia hemorrhage volume: patient selection for good clinical outcome after stereotactic catheter drainage.

OBJECTIVE The purpose of this study was to determine predisposing factors for good clinical outcome in patients with spontaneous basal ganglia hemorrhage with borderline volumes (defined as a hematoma volume between 20 and 50 cm) who had undergone treatment by stereotactic catheter drainage. METHODS From the 298 patients whose information had been prospectively collected in the institutional database between January 2010 and December 2013, 93 patients were included in this retrospective study and divided into 2 groups: best medical treatment alone (Group A, n = 44) and best medical treatment plus catheterization (Group B, n = 49). All patients met the following criteria: 1) a diagnosis of spontaneous basal ganglia hemorrhage, and 2) a borderline hematoma volume (20 to 50 cm).

Deep Intracerebral Hemorrhage Caused by Rupture of Distal Lenticulostriate Artery Aneurysm : A Report of Two Cases and a Literature Review.

Intracerebral hemorrhage (ICH) is common among various types of storkes; however, it is rare in young patients and patients who do not have any risk factors. In such cases, ICH is generally caused by vascular malformations, tumors, vasculitis, or drug abuse. Basal ganglia ICH is rarely related with distal lenticulostriate artery (LSA) aneurysm.

Effects of preventive surgery for unruptured intracranial aneurysms on attention, executive function, learning and memory: a prospective cohort study.

Background: We prospectively evaluated the effects of preventive surgery for unruptured intracranial aneurysms on attention, executive function, learning and memory.

Methods: Between March 2012 and June 2013, 56 patients were recruited for this study. Fifty-one patients met the inclusion criteria and were enrolled.

Effects of Prophylactic Antiepileptic Drugs on Clinical Outcomes in Patients with a Good Clinical Grade Suffering from Aneurysmal Subarachnoid Hemorrhage.

Objective: Routine use of prophylactic antiepileptic drugs (AED) has been debated. We retrospectively evaluated the effects of prophylactic AED on clinical outcomes in patients with a good clinical grade suffering from aneurysmal subarachnoid hemorrhage (aSAH).

Materials And Methods: Between September 2012 and December 2014, 84 patients who met the following criteria were included: (1) presence of a ruptured aneurysm; (2) Hunt-Hess grade 1, 2, or 3; and (3) without seizure presentation.

Headache After Cerebral Angiography: Frequency, Predisposing Factors, and Predictors of Recovery.

Background And Purpose: Headache after cerebral angiography is frequent but has received little attention. The purpose of this study was to evaluate the incidence and risk factors of headache after cerebral angiography. This study also addressed the predisposing factors that facilitate headache recovery.

The Course of Headache in Patients With Moderate-to-Severe Headache Due to Aneurysmal Subarachnoid Hemorrhage: A Retrospective Cross-Sectional Study.

Objectives: The purpose of this study was to evaluate the course of headache in patients with moderate-to-severe headache due to aneurysmal subarachnoid hemorrhage (aSAH) and to identify its predisposing factors.

Background: Little is known about the long-term course of headache in patients with aSAH.

Methods: Since September 2009, patients with aSAH have had their headaches prospectively rated using a numeric rating scale (NRS).

Clinical Risk Factors Affecting Procedure-Related Major Neurological Complications in Unruptured Intracranial Aneurysms.

Purpose: The operative risk and natural history rupture risk for the treatment of unruptured intracranial aneurysms (UIAs) should be evaluated. The purpose of this study was to report our experience with treating UIAs and to outline clinical risk factors associated with procedure-related major neurological complications.

Materials And Methods: We treated 1158 UIAs in 998 patients over the last 14 years.

Incidence and risk factors for rebleeding during cerebral angiography for ruptured intracranial aneurysms.

Purpose: The purpose was to evaluate the incidence and risk factors for rebleeding during cerebral angiography in ruptured intracranial aneurysms.

Materials And Methods: Among 1896 patients with ruptured intracranial aneurysms between September 2006 and December 2013, a total of 11 patients who experienced rebleeding of the ruptured aneurysms during digital subtraction angiography (DSA) were recruited in this study.

Results: There were 184 patients (9.

Microsurgical clipping of unruptured middle cerebral artery bifurcation aneurysms: incidence of and risk factors for procedure-related complications.

Objective: To report our experiences in microsurgical clipping of unruptured middle cerebral artery (MCA) bifurcation aneurysms and to evaluate the incidence of and risk factors for procedure-related complications.

Methods: The study comprised 416 patients treated between March 2003 and February 2014. All patients met the following criteria: 1) microsurgical clipping of an unruptured MCA bifurcation aneurysm was performed, and 2) clinical and radiographic follow-up data were available including preoperative digital subtraction angiography.

Preliminary experience with self-expanding closed-cell stent placement in small arteries less than 2 mm in diameter for the treatment of intracranial aneurysms.

Object: The purpose of this study was to report the authors' preliminary experience using self-expanding closed-cell stents deployed in small arteries (< 2 mm in diameter) to treat intracranial aneurysms.

Methods: A total of 31 patients were studied. All subjects met the following criteria: 1) they received an Enterprise stent for treatment of a wide-necked aneurysm or a dissecting aneurysm or as part of a stent-salvage procedure; and 2) they had an Enterprise stent deployed in a small parent artery (< 2 mm in diameter) that had no atherosclerotic stenosis.

Clinico-radiological Characteristics of Spontaneous Basal Ganglia Hemorrhage, According to Regional Classification.

Objective: The clinico-radiologic features of the spontaneous basal ganglia hemorrhage (BGH) may often differ one from another, according to its regional location. Therefore, we attempted to classify the BGH into regional subgroups, and to extrapolate the distinct characteristics of each group of BGH.

Materials And Methods: A total of 103 BGHs were analyzed by retrospective review of medical records.

Stent-assisted coil embolization of ruptured wide-necked aneurysms in the acute period: incidence of and risk factors for periprocedural complications.

Unlabelled: OBJECT.: The purpose of this study was to report the authors' experiences in stent-assisted coil embolization (SAC) of ruptured wide-necked aneurysms in the acute period and to evaluate the incidence of and risk factors for periprocedural complications.

Methods: A total of 72 patients were recruited for this study between March 2007 and June 2012.

Long-term clinical and angiographic outcomes of wrap-clipping strategies for unclippable cerebral aneurysms.

Purpose: To evaluate the efficacy and stability of the wrap-clipping methods as a reconstructive strategy in the treatment of unclippable cerebral aneurysms.

Materials And Methods: Twenty four patients who had undergone wrap-clipping microsurgery were retrospectively reviewed. Type and morphology of the treated aneurysm, utilized technique for wrap-clip procedure, and clinical outcome with angiographic results at their last follow-up were evaluated.

The role of endovascular treatment for ruptured distal anterior cerebral artery aneurysms: comparison with microsurgical clipping.

Background And Purpose: The purpose of this study was to compare clinical outcomes and treatment-related complications between coiling and clipping for ruptured distal anterior cerebral artery (DACA) aneurysms.

Methods: Eighty-four consecutive patients (M:F = 36:48; mean 53.8 years) with ruptured DACA aneurysms were treated by either clipping (n = 46, 54.

Blood pressure-lowering effect of carotid artery stenting in patients with symptomatic carotid artery stenosis.

Background: In patients with symptomatic carotid artery stenosis, long-term effects of carotid artery stenting (CAS) on blood pressure (BP) changes have not been documented well. We evaluated the effects of CAS on BP and found out its predisposing factors in patients with symptomatic carotid artery stenosis.

Methods: Between January 2003 and June 2012, a total of 107 patients were recruited, and all subjects met the following inclusion criteria: (1) patients underwent CAS with symptomatic carotid artery stenosis > 50%; (2) patients had clinical and radiographic data for at least 1 year of follow-up after CAS; and (3) patients had BP measurements at four different time points: pretreatment, post-treatment, 1-month follow-up, and 1-year follow-up.