Publications by authors named "Nicholas J Hackett"

Nevus of Ota, also known as oculodermal melanocytosis, is a benign melanocytic lesion that develops along the distribution of the V1 and V2 branches of the trigeminal nerve. Prior reports have described the typical imaging and clinical features of nevus of Ota. We present a rare case of a 31 year-old female with midface tumors and presumed hemorrhage into an orbital lesion in the setting of nevus of Ota resulting in acute loss of vision.

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Background: The maturation of the brain involves the coordinated expression of thousands of genes, proteins and regulatory elements over time. In sensory pathways, gene expression profiles are modified by age and sensory experience in a manner that differs between brain regions and cell types. In the auditory system of altricial animals, neuronal activity increases markedly after the opening of the ear canals, initiating events that culminate in the maturation of auditory circuitry in the brain.

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Objectives: To evaluate whether age is independently associated with greater rate of unanticipated hospital admission within 30 days of ambulatory surgery.

Design: Retrospective database study.

Setting: The 2012 National Surgical Quality Improvement Project data set.

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Vesicular transporter proteins are an essential component of the presynaptic machinery that regulates neurotransmitter storage and release. They also provide a key point of control for homeostatic signaling pathways that maintain balanced excitation and inhibition following changes in activity levels, including the onset of sensory experience. To advance understanding of their roles in the developing auditory forebrain, we tracked the expression of the vesicular transporters of glutamate (VGluT1, VGluT2) and GABA (VGAT) in primary auditory cortex (A1) and medial geniculate body (MGB) of developing mice (P7, P11, P14, P21, adult) before and after ear canal opening (~P11-P13).

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Methods: The American Society of Anesthesiologists Physical Status classification system (ASA PS) is a method of characterizing patient operative risk on a scale of 1-5, where 1 is normal health and 5 is moribund. Every anesthesiologist is trained in this measure, and it is performed before every procedure in which a patient undergoes anesthesia. We measured the independent predictive value of ASA-PS for complications and mortality in the ACS-NSQIP database by multivariate regression.

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Objective: While neck dissection is important in the treatment of head and neck cancer, there is a paucity of studies evaluating outcomes. We sought to compare preoperative variables and outcomes between clean and contaminated neck dissections, using the 2006-2011 American College of Surgeons National Surgical Quality Improvement Program (ACS NSQIP) data sets.

Study Design: Retrospective review of prospectively maintained database.

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