Vamsidhar Chavakula

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Methods for rapid and objective quantification of interictal spikes in raw, unprocessed electroencephalogram (EEG) samples are scarce. We evaluated the accuracy of a tailored automated spike quantification algorithm. The automated quantification was compared with the quantification by two board-certified clinical neurophysiologists (gold-standard) in five(More)
OBJECT Although the length of hospital stay is often used as a measure of quality of care, data evaluating the predictors of extended hospital stay after craniotomy for tumor are limited. The goals of this study were to use multivariate regression to examine which preoperative characteristics and postoperative complications predict a prolonged hospital stay(More)
Stereotactic radiosurgery is one of the treatment options for brain metastases. However, there are patients who will progress after radiosurgery. One of the potential treatments for this subset of patients is laser ablation. Image-guided stereotactic biopsy is important to determine the histopathological nature of the lesion. However, this is usually based(More)
INTRODUCTION Although reoperation has been utilized as a metric of quality of care, no national analysis has evaluated the rate of, reasons for, and predictors of unplanned reoperation after craniotomy for tumor. METHODS Patients who underwent cranial tumor resection were extracted from the prospective National Surgical Quality Improvement Program (NSQIP)(More)
BACKGROUND Basilar invagination is a rare clinical condition characterized by upward protrusion of the odontoid process into the intracranial space, leading to bulbomedullary compression. It is often encountered in adults with rheumatoid arthritis. Transoral microscopic or endonasal endoscopic decompression may be pursued, with or without posterior(More)
INTRODUCTION Patients with aneurysmal subarachnoid hemorrhage (SAH) frequently undergo multiple angiographic studies within a 48-h period. We sought to evaluate the impact of these repeated contrast loads on renal function. METHODS We reviewed the records of a consecutive series of 104 patients with aneurysmal subarachnoid hemorrhage, most of whom(More)
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