Mohammad Sami Walid

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OBJECTIVE To study the role of drains in lumbar spine fusions. METHODS The charts of 402 patients who underwent lumbar decompression and fusion (LDF) were retrospectively reviewed. Patients were classified per International Classification of Diseases, 9th Edition (ICD-9) procedure code as 81.07 (lateral fusion, 74.9%) and 81.08 (posterior fusion, 25.1%).(More)
BACKGROUND Postoperative fever is a common sequel of spine surgery. In the presence of rigid nationally mandated clinical guidelines, fever management may consume more health care resources than is reasonably appropriate. OBJECTIVE To study the relationship between postoperative fever, infection rate, and hospital charges in a cohort of spine surgery(More)
BACKGROUND CONTEXT Somatosensory evoked potential (SSEP) is used to monitor integrity of the brain, spinal cord, and nerve roots during spinal surgery. It records the electrical potentials from the scalp after electrical stimulation of the peripheral nerves of the upper or lower limbs. The standard monitoring modality in lumbosacral spine surgery includes(More)
INTRODUCTION Ollier Disease is a sporadic skeletal disorder with a predisposition to oncogenesis. It is estimated at around 1/100,000. We are presenting a young patient with Ollier Disease and high-grade astrocytoma. CASE REPORT A 14-year-old, Caucasian male with Ollier Disease presented with a history of headaches, vomiting, blurred vision, and unsteady(More)
Outpatient spine surgery is becoming popular because of its substantial economic advantages. We retrospectively studied 97 spine surgery outpatients and 578 inpatients who had proceeded through a common process of surgical venue selection. No differences (p > 0.05) were found in gender, race, obesity rate (46.9% versus [vs.] 42.9%), hypertension (9.7% vs.(More)
BACKGROUND After an aneurysmal subarachnoid hemorrhage, cerebral microcirculatory changes occur as a result cerebral vasospasm. The objective of this study is to investigate, with a computational model, how various degrees of vasospasm are influenced by increasing the mean blood pressure and decreasing the blood viscosity. METHODS Using ANSYS CFX(More)
INTRODUCTION Laparoscopic hysterectomy for large fibroid uteri is technically a difficult procedure. In this article, we report our experience with fibroid uteri >1 kg in weight. MATERIALS AND METHODS An intent-to-treat study. RESULTS From 2003 to 2009, 13 patients were successfully treated for large fibroid uteri with postoperative specimens weighing(More)
Renal cell carcinoma is an uncommon type of cancer that rarely metastasizes to the brain. The prognosis after discovering brain metastasis has traditionally been dismal. We are presenting a case of renal cell carcinoma with multiple brain metastases that was successfully treated with multimodal therapy including a new type of medication.
Endometriosis may in severe cases lead to obliteration of the anterior and/or posterior cul-de-sacs in the female pelvis. The anterior cul-de-sac is generally less commonly affected. This type of cases usually presents a challenge for the operating surgeon, whether via open route or through laparoscopy. In this paper, we present an illustrative case and(More)