Browsing by Author "Navarrete-Dechent C."
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- ItemDermoscopy of blastic plasmacytoid dendritic cell neoplasm in two patients(Academic Press, 2021) Nicklas C.; Lopez E.; Bellolio E.; Goldberg I.; Geller S.; Navarrete-Dechent C.Copyright © 2021 by the American Academy of PediatricsCONTEXT: Positive pressure ventilation (PPV) is the most important intervention during neonatal resuscitation. OBJECTIVE: To compare T-piece resuscitators (TPRs), self-inflating bags (SIBs), and flow-inflating bags for newborns receiving PPV during delivery room resuscitation. DATA SOURCES: Medline, Embase, Cumulative Index to Nursing and Allied Health Literature, Cochrane Database of Systematic Reviews, and trial registries (inception to December 2020). STUDY SELECTION: Randomized, quasi-randomized, interrupted time series, controlled before-and-after, and cohort studies were included without language restrictions. DATA EXTRACTION: Two researchers independently extracted data, assessed the risk of bias, and evaluated the certainty of evidence. The primary outcome was in-hospital mortality. When appropriate, data were pooled by using fixed-effect models. RESULTS: Meta-analysis of 4 randomized controlled trials (1247 patients) revealed no significant difference between TPR and SIB for in-hospital mortality (risk ratio 0.74; 95% confidence interval [CI] 0.40 to 1.34). Resuscitation with a TPR resulted in a shorter duration of PPV (mean difference - 19.8 seconds; 95% CI - 27.7 to - 12.0 seconds) and lower risk of bronchopulmonary dysplasia (risk ratio 0.64; 95% CI 0.43 to 0.95; number needed to treat 32). No differences in clinically relevant outcomes were found in 2 randomized controlled trials used to compare SIBs with and without positive end-expiratory pressure valves. No studies used to evaluate flow-inflating bags were found. LIMITATIONS: Certainty of evidence was very low or low for most outcomes. CONCLUSIONS: Resuscitation with a TPR compared with an SIB reduces the duration of PPV and risk of bronchopulmonary dysplasia. A strong recommendation cannot be made because of the low certainty of evidence. There is insufficient evidence to determine the effectiveness of positive end-expiratory pressure valves when used with SIBs.
- ItemDiagnostic utility of circumferential peripheral globules under dermoscopy in adults(HUMANA PRESS INC, 2021) Williams N.M.; De Bedout V.; Jaimes N.; Navarrete-Dechent C.; Marchetti M.A.; Jaimes N.© 2021 Centro Universitario de Anapolis. All rights reserved.This article addresses the interrelationships between climate and society during the 1870s in Chile, based on the analysis of historical sources such as the Bulletin of the National Agricultural Society, the newspaper El Mercurio de Valparaíso, the Presidential Messages, and the book "El Clima de Chile" published in 1877 by Benjamín Vicuña Mackenna. After showcasing the critical socioeconomic context of the period, it is found that national agriculture, represented chiefly by the production and export of wheat, was exposed not only to meteorological fluctuations but also to pests, epizootics, and poor agricultural practices that led to socio-ecological imbalances, which at that time were attributed solely to weather. Here it is proposed that it was the storms and great floods of 1877 caused by the El Niño phenomenon, which accelerated and exacerbated the deep political, social, and economic crisis wherein the country found itself. This crisis was overcome by the Chilean elite by waging the War of the Pacific and incorporating the saltpeter territories, among the greatest natural riches of the time.
- ItemDiscovering basal cell carcinoma cellular origin via reflectance confocal microscopy(2024) Ambrosio, Luca; Roberti, Vincenzo; Uribe González, Pablo Francisco; Chello, Camilla; Villaseca Hernández, Miguel Ángel; Navarrete-Dechent C.; Retrosi, Chiara; Conforti, Claudio; Pellacani, Giovanni
- ItemPatterns of Recurrence of Cutaneous Melanoma: A Literature Review(Springer International Publishing, 2023) Peirano D.; Donoso F.; Vargas S.; Hidalgo L.; Aguero R.; Uribe P.; Mondaca S.; Navarrete-Dechent C.©2023 Peirano et al.The incidence of melanoma has been dramatically increasing over the last decades. Melanoma is considered to have a high metastatic potential and it can progress via lymphatic vessels or through hematogenous metastasis. Different patterns of recurrence have been described, namely, local, satellite, and in transit metastasis (LCIT), lymphatic metastasis, and systemic metastasis. With a more advanced melanoma stage at diagnosis, there is a higher risk for systemic metastasis in comparison to LCIT; in contrast, early-stage melanoma tends to recur more frequently as LCIT and less commonly as systematic metastasis. The aim of this review was to summarize the patterns of recurrence of cutaneous melanoma, giving the clinician a practical summary for diagnosis, prognosis, and surveillance. There is a knowledge gap of the common patterns of recurrence that needs to be addressed to better identify patients at high risk of disease recurrence and personalize surveillance strategies as well as patient counseling.
- ItemPatterns of the use of reflectance confocal microscopy at a tertiary referral dermatology clinic(HUMANA PRESS INC, 2021) Mehta P.P.; Oh Y.; Cordova M.; Chen C.-S.; Halpern A.; Harris U.; Kentley J.; Kurtansky N.R.; Kose K.; Lee E.H.; Marchetti M.A.; Marghoob A.; Markova A.; Navarrete-Dechent C.; Nehal K.; Rajadhyaksha M.; Rossi A.; Sahu A.; Sun M.; Jain M.; Rotemberg V.; Navarrete-Dechent C.Copyright © 2021 Inderscience Enterprises Ltd.This study aims at identifying the existing methods for materials planning and control applied in healthcare organisations. An extensive literature review was performed in the main databased based upon two research axes: 1) materials planning and control; 2) health services. Besides the content and bibliometric analysis, literature evidence was analysed from the perspective of two theoretical lenses: types of flow of value and complexity levels of hospital departments. Results from this review allowed the indication of two main research directions: 1) integration among methods for materials planning and control; 2) financial assessment of the implementation of materials planning and control methods in hospitals. The healthcare sector is highly important due to the criticality of it is quality, safety concerning patient care and the high cost involved in its operations. Furthermore, resources are usually limited, complicating its management.
- ItemRapid implementation of tele-dermatology during COVID-19 pandemic in an academic dermatology departmentRápida implementación de teledermatología durante la pandemia por COVID-19: lecciones aprendidas de un departamento académico de Dermatología(HUMANA PRESS INC, 2021) Ramirez-Cornejo C.; Munoz-Lopez C.; Del Barrio-Diaz P.; Jaque A.; Majerson D.; Navarrete-Dechent C.; Uribe P.; Vera-Kellet C.; Abarzua A.; Bello C.; Cardenas C.; Carreno N.; Concha M.; Cossio M.L.; Curi M.; Del Puerto C.; Downey C.; Droppelmann K.; Garcia-Huidobro I.; Giesen L.; Gompertz-Mattar M.; Harz-Fresno I.; Kam S.; Kolbach M.; Navajas L.; Reyes-Baraona F.; Rubio R.; Salomone C.; Sandoval M.; Silva S.; Valle E.; Zegpi M.S.; Pertuze C.; Valderrama S.© 2021 Sociedad Medica de Santiago. All rights reserved.Background: The day after COVID-19 quarantine started, we initiated patient care through Tele-dermatology. Aim: To report the experience of the implementation of Telemedicine in dermatology and to assess its impact on the number of dermatological visits compared with the pre-pandemic period. Material and methods: The study was conducted between March 27th, 2020, and April 30th, 2020. All patients submitted clinical images of their skin condition via secure email before the telemedicine visit. All telemedicine visits were conducted using the Zoom video conferencing platform. Patient demographics and medical history were recorded. If the dermatologist was unable to reach a diagnosis, the patient was sent for an in-person visit, skin biopsy, or additional laboratory workup. Results: We recorded 1,357 Tele dermatology visits from 1,222 patients aged 29 ± 18 years (38% males). Visits increased from 104 to 298 from the first to the last week, corresponding to 17% of the patient volume seen before the pandemic (1,709 in-person patients/week). A preliminary diagnosis was made in 95% of cases. Ninety percent of patients sent photos. Fifty eight percent of cases were chronic diseases, and were classified as inflammatory in 68%, infectious in 15%, neoplastic/tumoral in 7%, or other conditions in 11%. Less than 1% of these visits were COVID-19 related. Conclusions: In this prospective study of Tele-dermatology lasting five weeks, a preliminary diagnosis could be made in approximately 95% of cases and in the first five weeks of implementation, a volume of consultations equivalent to 17% of those made in the pre-pandemic period was carried out. Therefore, Tele-dermatology can be implemented quickly and successfully in practices when healthcare access is limited.
- ItemScabies Mite is Bright Green Under UV Dermatoscopy(2023) Pietkiewicz P.; Navarrete-Dechent C.© 2023 by the authors.This paper aims to identify typologies of Latin American cities based on socioeconomic urban environment patterns. We used census data from 371 urban agglomerations in 11 countries included in the SALURBAL project to identify socioeconomic typologies of cities in Latin America. Exploratory factor analysis was used to select a set of variables, and finite mixture modelling (FMM) was applied to identify clusters to define the typology of cities. Despite the heterogeneities among the Latin American cities, we also found similarities. By exploring intersections and contrasts among these clusters, it was possible to define five socioeconomic regional typology patterns. The main features of each one are low-education cities in Northeast Brazil; low-unemployment cities in Peru and Panama; high-education cities in Argentina, Chile, Colombia, Costa Rica, Nicaragua and Mexico; high female labor participation, with high primary education in Argentina and low primary education in Brazil; and low female labor participation and low education in Brazil, Colombia, El Salvador, Guatemala, and Mexico. Identifying clusters of cities with similar features underscores understanding of the urban social and economic development dynamics and assists in studying how urban features affect health, the environment, and sustainability.
- ItemScreening for skin cancer in special populations: testicular germ-cell cancer survivors(2022) Navarrete-Dechent C.; Longo C.© 2022 Elsevier LtdNon-alcoholic fatty liver disease (NAFLD) affects 20–25% of the general population and is associated with morbidity, increased mortality, and elevated health-care costs. Most NAFLD risk factors are modifiable and, therefore, potentially amenable to being reduced by public health policies. To date, there is no information about NAFLD-related public health policies in the Americas. In this study, we analysed data from 17 American countries and found that none have established national public health policies to decrease NAFLD-related burden. There is notable heterogeneity in the existence of public health policies to prevent NAFLD-related conditions. The most common public health policies were related to diabetes (15 [88%] countries), hypertension (14 [82%] countries), cardiovascular diseases (14 [82%] countries), obesity (nine [53%] countries), and dyslipidaemia (six [35%] of countries). Only seven (41%) countries had a registry of the burden of NAFLD, and efforts to raise awareness in the Americas were scarce. The implementation of public health policies are urgently needed in the Americas to decrease the burden of NAFLD.
- ItemThree-dimensional reconstruction of eccrine poroma vessels seen under reflectance confocal microscopy(Springer International Publishing, 2023) Hidalgo L.; Hanlon K.L.; Correa-Selm L.; Villaseca M.A.; Carrasco K.; Peirano D.; Donoso F.; Uribe P.; Navarrete-Dechent C.© 2023 IOP Publishing Ltd.Because solar light, from Earth perspective, a curve is drawn in Moon’s surface that separates its dark side from the illuminated one. This curve is known as the terminator curve. In this article we prove, using direct and indirect methods, that the terminator curve corresponds to an ellipse. This is demonstrated using mathematical concepts and photographs of the Moon that are analysed with a geometrical software. Using this information, we also show how to calculate the illuminated fraction area of the Moon depending on its day of rotation. We obtain excellent approximations regarding the values given by computational systems. We discuss the results of considering the Moon as a flat disk or like a sphere. We analyse the technical difficulties of the process and the mathematical tools needed for more precise calculations. We also put in context this demonstration of the ellipticity of the terminator curve for any interior planet illuminated by a central star of any planetary system, seen from a outsider planet, the case in which the phases are more noticeable. Finally we extend the previous calculations to analyse the illuminated percentage of the inner planets Mercury and Venus, obtaining excellent results in the case of Venus.
- ItemUltraviolet-Induced Fluorescence Dermatoscopy of Trichobacteriosis Axillaris Reveals Peripilar Yellow-Green Luminescent Concretions(Springer, 2023) Al-Nasiri M.; Navarrete-Dechent C.; Korecka K.; Salwowska N.; Goldust M.; Pietkiewicz P.; CEDEUS (Chile)© 2023 by the authors.Recent studies have shown various relationships between physical activity and the incidence of obesity, but this study critically explored the association of sedentary time (ST) and moderate-to-vigorous physical activity (MVPA) with obesity risk in adults from eight Latin American countries. ST and MVPA were assessed with accelerometers and stratified into 16 joint categories. Multivariate logistic regression models were used. The obesity risk indicators evaluated were body mass index (BMI), waist circumference (WC), and neck circumference (NC). Quartile 4 of ST and ≥300 min/week of MVPA was associated with lower odds of BMI compared to quartile 1 of ST and ≥300 min/week of MVPA. Quartile 1 of ST and 150–299 min/week of MVPA, quartile 1 of ST and 76–149 min/week MVPA, quartile 3 of ST and 76–149 min/week MVPA, and quartiles 1, 2, and 3 of ST with 0–74 min/week MVPA were associated with higher odds of high WC compared to quartile 1 of ST and ≥300 min/week of MVPA. Quartile 3 of ST and 150–299 min/week of MVPA, quartiles 1 and 3 of ST and 76–149 min/week of MVPA, and quartile 1 of ST and 0–74 min/week MVPA were associated with higher NC compared to quartile 1 of ST and ≥300 min/week of MVPA. This study suggests that achieving the MVPA recommendations will likely protect against obesity, regardless of ST.