Unexpected abnormal intraoperative neurophysiologic monitoring change by multiple spontaneous intracerebral haemorrhage during endovascular coiling.

We report a patient with multiple angiographically negative intracerebral haemorrhages, which were recognized by significant changes in intraoperative neurophysiologic monitoring during the coil embolization of a left middle cerebral artery aneurysm.

The RAP Index during Intracranial Pressure Monitoring as a Clinical Guiding for Surgically Treated Aneurysmal Subarachnoid Hemorrhage: Consecutive Series of Single Surgeon.

Background: It is well known that assessing the RAP index along with intracranial pressure (ICP) monitoring in traumatic brain injury patients is helpful. We will discuss the usefulness of this assessment tool as a clinical guide for surgically treated poor grade aneurysmal subarachnoid hemorrhage (SAH).

Methods: This retrospective study included 35 patients with aneurysmal SAH who presented with World Federation of Neurosurgical Societies (WFNS) grade V SAH and received surgical treatment from January 2013 to December 2018.

Spontaneous Disappearance of an Arachnoid Cyst after Burr Hole Drainage of Chronic Subdural Hematoma.

It is well known that the presence of arachnoid cysts (ACs) in young patients is a risk factor for developing a chronic subdural hematoma (CSDH) after a minor head injury. Although there have been controversies with the treatment, most authors recommend only draining the CSDH if the AC is asymptomatic. This judgement is based on the facts that this surgical approach has shown good clinical outcomes, and the AC usually remains unchanged after the surgery.

Contralateral Mechanical Thrombectomy of Partial Deployed Stent Retrieval for Acute Anterior Inferior Cerebellar Artery Occlusion.

Background: Acute anterior inferior cerebellar artery (AICA) occlusion is considered an acute ischemic stroke requiring medical treatment without mechanical thrombectomy (MT). There is a procedural risk of parent vessel rupture, but neurologic deficits are not generally severe. Here, we report a case of MT performed using partially deployed stent retrieval for acute AICA occlusion.

Recurrence of Small Cerebral Aneurysms (< 4 mm) Treated Endovascularly Using Target® Nano™ Coils.

Objective: In our series, endovascular coiling with Target® Nano™ coils (Stryker Neurovascular, Fremont, CA, USA) with diameters of 1 or 1.5 mm exhibited favorable technical feasibility in the treatment of small cerebral aneurysms (< 4 mm). However, little is known about the recurrence of small cerebral aneurysms treated using Target® Nano™ coils.

Predictive value of neurophysiologic monitoring during neurovascular intervention for postoperative new neurologic deficits.

Purpose: Forms of intraoperative neurophysiologic monitoring (IONM), including somatosensory evoked potentials (SSEPs) and motor evoked potentials (MEPs), have been widely used in the field of neurosurgery. This study aimed to evaluate the diagnostic efficacy of IONM in identifying intraoperative events and predicting postoperative neurologic deficits in neurovascular intervention.

Methods: From January 2013 to December 2016, we retrospectively reviewed patients who underwent neurovascular intervention under general anesthesia with the use of IONM.

A novel DHCR7 mutation in a Smith-Lemli-Opitz syndrome infant presenting with neonatal cholestasis.

Smith-Lemli-Opitz syndrome (SLOS) is an autosomal recessive malformation syndrome caused by a defect in cholesterol biosynthesis. The incidence is very low in Asians and only one case has been reported in Korea thus far. Recently, we found an infant with neonatal cholestasis.

Inkjet printing of single-walled carbon nanotubes and electrical characterization of the line pattern.

Single-walled carbon nanotubes (SWCNTs) were patterned using inkjet printing. To make the uniform networks of dropped SWCNTs, the effects of substrate heating, surface hydrophilicity of the substrate and the jetting process were investigated. Circuit diagrams including holes, lines and curves were printed on glass and polymer substrates, and the conductive lines were printed on a glass substrate to characterize their electrical properties by I-V curve and impedance measurements.