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Articles by Federal University of São Paulo

Review of Stereotactic and Neuronavigation Brain Biopsy Methods in the Dog

Published on: 1st November, 2018

OCLC Number/Unique Identifier: 7912354081

Objective: To perform a review of brain biopsies in the canine species and determine if it is possible to compare the stereotactic and neuronavigation results. Method: A search was performed in NCBI’s PubMed database for stereotactic or neuronavigational canine brain biopsy publications and articles which met at least one of the inclusion criteria and not any of the exclusion criteria were selected. The inclusion criteria were: 1) assessment of the specificity of the biopsy, 2) assessment of system accuracy, 3) assessment of the biopsy results, and 4) duration of the procedure. Results: Only one article met all the inclusion criteria. Eleven articles that partially met the criteria were used for comparison. Authors used different stereotaxic methods and two used neuronavigation equipment. The authors of the stereotactic studies either adapted devices from human medicine or developed their own devices; the level of accuracy was variable (errors of 0.0 mm to 5.1 mm), and the two articles that used animals with spontaneous lesions had a diagnostic specificity rate higher than 90 percent. The accuracy of the neuronavigation studies was approximately 3.3 mm; however, no live animals were used. Conclusions: It was not possible to properly compare stereotactic and neuronavigation techniques. To do so, the methodologies and the assessed parameters need to be standardized.
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Wound architectural analysis of 1.8mm microincision cataract surgery using spectral domain OCT

Published on: 12th August, 2019

OCLC Number/Unique Identifier: 8216115991

Purpose: Analyze Microincision Cataract surgery wound using Fourier-Domain optical coherence tomography. Setting: Medical School of Medicine, Catholic University of Brasilia, Brasília, Brazil. Design: Prospective comparative observational study Methods: Forty eyes were included in this prospective study divided in two groups: with contact lens (CL) and without contact lens (WCL). A line scan pattern of the corneal incisions were acquired using a Spectral domain OCT system immediately after the surgery, and at postoperative days 1, 7 and 30. Incisions were analyzed regarding length, location, angle, architecture, and anatomic imperfections. Results: All incisions were located temporal or nasal superiorly. The average wound length was 1.28 + 0.18mm and the mean incision angle was 49 + 9 degrees. The average wound length of the WCL group mean was 1.24 + 0.17 mm and the mean incision angle was 51 + 8 degrees. Comparing groups for the length and the angle, the incisions measurements were not statistically significant. Anatomic imperfections were observed at the first day postoperative in 12 eyes for CL group and in 13 eyes for the WCL group. No patient presented endophthalmitis during the follow-up. Conclusion: Epithelial imperfection was observed in two patients in the WCL group with spontaneous resolution. The CL group had the highest length and lowest angle of corneal incision. Using contact lens to prevent wound construction imperfection appears not to be a good option. Further studies using a greater number of patients with an architectural analysis of clear corneal incisions are needed to confirm these preliminary results.
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Burden and depressive symptoms in health care residents at COVID-19: A preliminary report

Published on: 8th April, 2021

OCLC Number/Unique Identifier: 9026739488

This paper focuses on the mental health burden on medical and healthcare residents during the 1st wave of COVID-19 pandemic crisis in 2020 describing the activities of a mental health service for residents (NAPREME) in a public university, UNIFESP, Sao Paulo, Brazil; and a preliminary study showing an increasing of depressive symptoms and depression among residents. Data is related to the screening interviews of medical residents and healthcare multi-professional residents who sought the mental health service from March to December 2020. A comparison was conducted with the same period in 2019 (covering a period when Covid-19 was not affecting the Brazilian population). There was a 22% demand increase in 2020. Of the total amount who sought treatment: 23% were medical residents, 22% nursing residents, and the remaining distributed among other professions; and 58% were first year residents and 34% second year. Data from the BDI questionnaire showed some variance between the two years: the mean score for 2020 was 24.67 (± 7.86) which is in the depression range, higher than the mean score of 19.91 points in the previous year (± 10.15) which is only in the depressive symptoms range (p < 0.005). In the pandemic period there was an increase in residents with depression from 49% to 70%. Depression, anxiety, stress and burnout syndrome were observed, demanding psychological and psychiatric care for this population. Assessment of residents’ mental health will continue during 2021, during the 2nd wave of COVID-19 and an additional analysis will be conducted along the year.
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