BACKGROUND AND PURPOSE The relationship between enlarged subarachnoid spaces and subdural collections is poorly understood and creates challenges for clinicians investigating the etiology of subdural collections. The purpose of this study was to determine the prevalence of subdural collections on cross sectional imaging in children with macrocephaly correlating with subarachnoid space enlargeme...

We describe a percutaneous approach for cerebral surgical access. After lumbar puncture, the spinal subarachnoid space was traversed by using standard angiographic guidewire techniques until the introducer catheters were in the intracranial space. Under fluoroscopic guidance, the intracranial subarachnoid space was navigated, and the ventricular system entered. Subarachnoid placement was confir...

Histological changes of the cerebral arteries taken from 3 patients who died of cerebral vasospasm after subarachnoid hemorrhage were investigated and compared with those of 10 dogs with ex perimental vasospasm induced by a subarachnoid injection of 0.15-0.20 mg/kg of epinephrine. The cerebral arteries of the human autopsy cases known to have undergone spasm exhibited a wide lumen with thin med...

To test clinically whether a small dose of ifenprodil can enhance the anti-hyperalgesic effect of ketamine in dogs, a prospective randomized cross-over study was done with eight mongrel dogs (weighing 16.9 ± 3.7kg). Animals received two distinct treatments: ketamine (0.3mg kg-1; KT) and an ifenprodil plus ketamine combination (0.03mg kg and 0.3mg kg, respectively; IKT). Dogs were anesthetized w...

Subarachnoid block is routinely accessed blindly by the use of anatomical landmarks in localization subarachnoid. Performing procedure using landmark technique patients with spinal deformities or morbidly obese can inflict discomfort to patient from multiple needle pricks prolonged positioning during procedure. This article aims demonstrate C-arm fluoroscopy for easy and smooth access into suba...

BACKGROUND AND PURPOSE Although it has been suggested that humoral immunity plays a role in the pathogenesis of cerebral vasospasm after subarachnoid hemorrhage, there has been no quantitative assay for cellular immunity. We studied the kinetics of immune cells in the subarachnoid space after subarachnoid hemorrhage in the rat. METHODS One hundred fourteen Sprague-Dawley rats were used in thi...

OBJECTIVES To determine the feasibility of evaluating the subarachnoid space by measuring two novel sonographic parameters in axial section using transabdominal ultrasound, in addition to the parameters previously defined in coronal section, and to construct a normal range for the subarachnoid space width in singleton healthy fetuses. METHODS Healthy pregnant women between 20 and 29 weeks wer...

BACKGROUND Obstetric or non-obstetric surgery can be performed in pregnant women during the second trimester. We evaluated maximal sensory block level (MSBL), and other sensory block characteristics after spinal anesthesia in early and late second trimester pregnant women. METHODS Forty-four pregnant women scheduled for cervical cerclage under spinal anesthesia in the early second trimester (...

BACKGROUND Spinal anaesthesia (SA) has high success rates. However, inadequate block after SA has been reported even in the absence of technical problems. Various mechanisms for failed SA (FSA) have been proposed, but reports of cerebrospinal fluid (CSF) concentrations of local anaesthetics (LA) after FSA are scarce. We report lumbar CSF concentrations of bupivacaine in 20 patients in whom adeq...