Variability of Clinical and Angiographic Results Based on the Treatment Preference (Endovascular or Surgical) of Centers Participating in the Subarachnoid Hemorrhage Database of the Working Group of the Spanish Society of Neurosurgery.

Objectives: Since the introduction of endovascular treatment for cerebral aneurysms, hospitals in which subarachnoid hemorrhage is treated show different availability and/or preferences towards both treatment modalities. The main aim is to evaluate the clinical and angiographic results according to the hospital's treatment preferences applied.

Methods: This study was conducted based on use of the subarachnoid hemorrhage database of the Vascular Pathology Group of the Spanish Neurosurgery Society.

Non traumatic giant aneurysm of middle meningeal artery. Case report and review of the literature.

A case of a non-traumatic giant aneurysm of the middle meningeal artery is presented in a 59-year-old patient with a history of liver transplantation, liver cirrhosis and hepatocarcinoma, chronic renal disease, hypertension and chronic bronchitis who presented with tonic-clonic seizures. CT and MRI showed a lesion suggestive of metastasis without ruling out a glial type tumor. He was operated through a left FT craniotomy.

Prognosis of patients in coma after acute subdural hematoma due to ruptured intracranial aneurysm.

Acute subdural hematomas (aSDH) secondary to intracranial aneurysm rupture are rare. Most patients present with coma and their functional prognosis has been classically considered to be very poor. Previous studies mixed good-grade and poor-grade patients and reported variable outcomes.

[Arteriovenous malformations of the brain: personal experience with 121 patients treated with microsurgery].

Introduction: Arteriovenous malformations (AVM) can be found in 0.1% of the population, and the most frequent presenting symptom is intracranial haemorrhage.

Aim: To conduct a descriptive analysis of a series of cases of AVM that had been treated surgically by a neurosurgeon.

Posterior fossa arteriovenous malformations: Significance of higher incidence of bleeding and hydrocephalus.

Objective: Hydrocephalus associated with different types of intracranial arteriovenous malformations (AVMs) has been scarcely studied. In the present report we investigate this association with posterior fossa AVMs (pfAVMs). We hypothesized that there is an increased risk of hydrocephalus and required permanent cerebrospinal fluid (CSF) shunt in patients with pfAVMs that may be linked to the increased risk of bleeding of these lesions.

Rapid resolution of brain ischemic hypoxia after cerebral revascularization in moyamoya disease.

Background: In moyamoya disease (MMD), cerebral revascularization is recommended in patients with recurrent or progressive ischemic events and associated reduced cerebral perfusion reserve. Low-flow bypass with or without indirect revascularization is generally the standard surgical treatment. Intraoperative monitoring of cerebral partial pressure of oxygen (PtiO2) with polarographic Clark-type probes in cerebral artery bypass surgery for MMD-induced chronic cerebral ischemia has not yet been described.

[Intraoperative monitoring of oxygen tissue pressure: Applications in vascular neurosurgery].

Ischemic lesions related to surgical procedures are a major cause of postoperative morbidity in patients with cerebral vascular disease. There are different systems of neuromonitoring to detect intraoperative ischemic events, including intraoperative monitoring of oxygen tissue pressure (PtiO2). The aim of this article was to describe, through the discussion of 4 cases, the usefulness of intraoperative PtiO2 monitoring during vascular neurosurgery.

Intraoperative monitoring of brain tissue oxygenation during arteriovenous malformation resection.

Background: In normal perfusion pressure breakthrough (NPPB) it is assumed that following arteriovenous malformation (AVM) resection, vasoparalysis persists in the margins of the lesion and that a sudden increase in cerebral blood flow (CBF) after AVM exclusion leads to brain swelling and postsurgical complications. However, the pathophysiology NPPB remains controversial.The aim of our study was to investigate the oxygenation status in tissue surrounding AVMs and in the distant brain using intraoperative monitoring of cerebral partial pressure of oxygen (PtiO(2)) to achieve a better understanding of NPPB pathophysiology.