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61 results on '"Yanovskaya M"'

54. Sinterability of monodisperse TiO2 powders

Author

Galakhov, A., Yanovskaya, M., Golubko, N., and Podzorova, L.

Abstract

Abstract: Sintering of monodisperse titania powders with a relatively large grain size (0.84±0.24 µm) is investigated. It is established that the use of nonagglomerated monodisperse powders makes it possible to fabricate ceramics with a density of 99.5% of the theoretical value and a narrow distribution of pore sizes without preliminary milling and by relatively simple technological means, namely, cold pressing and casting into gypsum molds followed by sintering at a relatively low temperature. In combination with a high density such a structure makes the developed ceramic material applicable for the production of porous membranes for microbiology and medicine.

Published
1996
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60. How neuropsychiatric comorbidity, modulatory indication, demographics, and other factors impact deep brain stimulation inpatient outcomes in the United States: A population-based study of 27,956 patients.

Author

Kortz MW, Kongs BM, McCray E, Grassia F, Hosokawa P, Bernstein JE, Moore SP, Yanovskaya M, and Ojemann SG

Subjects
Aged, Databases, Factual, Deep Brain Stimulation, Dystonic Disorders complications, Essential Tremor complications, Female, Humans, Male, Middle Aged, Obsessive-Compulsive Disorder complications, Parkinson Disease complications, Retrospective Studies, Treatment Outcome, United States, Dystonic Disorders therapy, Essential Tremor therapy, Obsessive-Compulsive Disorder therapy, Parkinson Disease therapy
Abstract

Objective: To determine how neuropsychiatric comorbidity, modulatory indication, demographics, and other characteristics affect inpatient deep brain stimulation (DBS) outcomes., Methods: This is a retrospective study of 45 months' worth of data from the National Inpatient Sample. Patients were aged ≥ 18 years old and underwent DBS for Parkinson Disease (PD), essential tremor (ET), general dystonia and related disorders, other movement disorder (non-PD/ET), or obsessive-compulsive disorder (OCD) at a US hospital. Primary endpoints were prolonged length of stay (PLOS), high-end hospital charges (HEHCs), unfavorable disposition, and inpatient complications. Logistic models were constructed with odds ratios under 95% confidence intervals. A p-value of 0.05 determined significance., Results: Of 214,098 records, there were 27,956 eligible patients. Average age was 63.9 ± 11.2 years, 17,769 (63.6%) were male, and 10,182 (36.4%) patients were female. Most of the cohort was White (51.1%), Medicare payer (64.3%), and treated at a large-bed size (80.7%), private non-profit (76.9%), and metro-teaching (94.0%) hospital. Neuropsychiatric comorbidity prevalence ranged from 29.9% to 47.7% depending on indication. Compared with PD, odds of complications and unfavorable disposition were significantly higher with other movement disorders and dystonia, whereas OCD conferred greater risk for HEHCs (p < 0.05). Patients with ET had favorable outcomes. Neuropsychiatric comorbidity, Black race, and Charlson Comorbidity Index > 0 were significantly associated with unfavorable outcomes (p < 0.05)., Conclusion: The risk of adverse inpatient outcomes for DBS in the United States is independently correlated with non-PD/ET disorders, neuropsychiatric comorbidity, and non-White race, reflecting the heterogeneity and infancy of widespread DBS for these patients., (Copyright © 2021 Elsevier B.V. All rights reserved.)

Published
2021
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61. Endoscopic Endonasal Resection of Meckel's Cave Epidermoid Cysts: Case Discussion and Literature Review.

Author

Zakaria J, Saini P, Yanovskaya M, Tsiang JT, Ravindran K, Johans S, Patel CR, and Germanwala AV

Abstract

Meckel's cave (MC) epidermoid cysts are relatively uncommon lesions. In cases where surgical excision is indicated, resection is often carried out via a frontosphenotemporal craniotomy from an anterolateral approach or a temporal craniotomy with or without a petrosectomy for a lateral corridor; both of these routes are associated with brain retraction and potential neurovascular injury. The anterior location of MC in the middle cranial fossa makes safe access via posterior fossa-based approaches-such as the retrosigmoid approach-challenging as well. Here, we present the cases of two patients diagnosed with epidermoid cysts in MC who underwent surgical resection via an endoscopic endonasal transpterygoid approach. Near-total resection was achieved in both cases, with only mild transient neurologic disturbances postoperatively. Radiographically, no evidence of residual disease was noted in either patient. We further review the nuances of an extended endoscopic endonasal approach to these lesions., Competing Interests: The authors declare that they have no conflicts of interest., (Copyright © 2020 Jehad Zakaria et al.)

Published
2020
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