Kazuhiro Ohwaki

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Subarachnoid haemorrhage (SAH) patients in Fisher group 3 have a high risk of vasospasm and chronic hydrocephalus. We have provided cisternal irrigation combined with a head-shaking method for preventing vasospasm in SAH patients. We investigated 76 SAH patients in Fisher group 3 who received cisternal irrigation with head-shaking to evaluate the(More)
The authors report an unusual case of a 11-year-old boy whose supratentorial ependymoma showed rapid growth. He had had generalized convulsive seizures when he was 9 years old. On an initial CT scan a small calcified lesion was identified adjacent to the right sensorimotor cortex. Repeated CT scans showed no interval change in the size of the tumor for 16(More)
OBJECT Although the mechanisms underlying neurocognitive changes after carotid endarterectomy (CEA) are poorly understood, intraoperative ischemia and postoperative hemodynamic changes may play a role. METHODS Data from 81 patients who underwent unilateral CEA with routine shunt use for carotid artery stenosis were retrospectively evaluated. These(More)
OBJECT Lowering the blood pressure (BP) of patients with intracerebral haemorrhage (ICH) can prevent haematoma enlargement but may also promote secondary infarction in areas adjacent to the haematoma, which can lead to neurological deterioration. Little is known about the effects of low BP on early neurological deterioration (END). We conducted a(More)
INTRODUCTION The vast majority of patients with intracerebral hemorrhage (ICH) are admitted to an intensive care unit (ICU). Patients admitted to ICUs have a high risk of developing nosocomial infections, while complicating infection appears to be associated with a longer ICU stay. An increased length of ICU stay translates directly into increased costs.(More)
BACKGROUND Routine shunting to minimize ischemia during carotid endarterectomy (CEA) is controversial. The aim of this study was to stratify the ischemic parameters associated with CEA and evaluate the effect of routine shunting in attempting to mitigate those ischemia. METHOD Data from 248 CEAs with routine shunting were retrospectively evaluated. Our(More)
INTRODUCTION Little information is available on the efficacy of aggressive treatment such as surgery in improving the outcome of severely affected patients after supratentorial intracerebral hemorrhage (ICH). Our objective was to assess the effect of hematoma removal and ventricular drainage on the mortality of patients with severe primary supratentorial(More)
The aim of this study was to assess whether body mass index (BMI) was associated with abnormal results of other tests related to metabolic disorders in the periodic health checkup, and determine whether changes in BMI were associated with changes in these other tests. We surveyed 2,392 Japanese male workers, aged 19-59 who have received regular health(More)
BACKGROUND Spinal cerebrospinal fluid (CSF) leaks, which are considered a cause of intracranial hypotension, generally do not cause any local symptoms. Although symptoms are key elements for further evaluation, few studies have examined symptom predictors of intracranial hypotension. The aim of this study was to determine what symptoms are predictors of CSF(More)
BACKGROUND The mechanisms underlying post-extracranial to intracranial (EC-IC) bypass neurocognitive changes are poorly understood. METHODS Data from 55 patients who underwent a unilateral EC-IC bypass for atherosclerotic internal carotid artery (ICA)/middle cerebral artery (MCA) steno-occlusive disease were retrospectively evaluated. These patients(More)