Browsing by Author "Rodriguez, Nicolas"

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    COVID-19-Associated Mold Infection in Critically Ill Patients, Chile
    (2021) Rabagliati, Ricardo; Rodriguez, Nicolas; Nunez, Carolina; Huete, Alvaro; Bravo, Sebastian; Garcia, Patricia
    Patients with severe coronavirus disease (COVID-19) may have COVID-19-associated invasive mold infection (CAIMI) develop. We report 16 cases of CAIMI among 146 nonimmunocompromised patients with severe COVID-19 at an academic hospital in Santiago, Chile. These rates correspond to a CAIMI incidence of 11%; the mortality rate for these patients was 31.2%.
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    Diverse intrusion modes during the construction of a high-silica magma reservoir: Evidence from La Obra-Cerro Blanco intrusive suite (central Chile)
    (2024) Payacan, Italo; Covarrubias, Maria Alejandra; Rodriguez, Nicolas; Tavazzani, Lorenzo; Gutierrez, Francisco; Roperch, Pierrick; Poblete, Fernando; Meyer, Martin
    Several conceptual models have been proposed for the amalgamation of granitoid plutons, which range from incremental growth to single-stage emplacement of these systems. This diversity of views has led to intense debate about the thermomechanical state of silicic intrusions and the magma differentiation paths within the crust. In this contribution, we present a comprehensive petrologic, geochronologic, and magnetic fabric data set from the La Obra-Cerro Blanco intrusive suite, which allows us to explore the petrogenesis and magma emplacement processes in the upper crust.
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    Polydrug Use and Co-occurring Substance Use Disorders in a Respondent Driven Sampling of Cocaine Base Paste Users in Santiago, Chile
    (2022) Olivari, Carla F.; Gaete, Jorge; Rodriguez, Nicolas; Pizarro, Esteban; Del Villar, Paloma; Calvo, Esteban; Castillo-Carniglia, Alvaro
    We characterized substance use patterns and co-occurring substance use disorders among active cocaine base paste (CBP) users in Santiago, Chile using data from respondent-driven sampling (RDS) in three areas of Metropolitan Santiago. Recruitment began with nine seeds, reaching 398 active CBP users (18% women; mean age 37.7 years), defined as persons consuming CBP at least twice per week in the last three months. Population proportions and uncertainty were estimated accounting for individuals' social network and homophily. The median CBP age of initiation was 21 years, and the median number of years using CBP was 7 for women and 15 for men. The median days of use in the past month was 25 days, with a median of 56 doses per week. The proportion of monthly income spent on CBP was 65%. The prevalence of substance use disorders (SUDs) were: 98% for CBP, 67% for alcohol, 60% for marijuana, and 41% for cocaine hydrochloride. Heavy polydrug use patterns and co-occurring SUDs are frequent among active CBP users in the metropolitan area of Santiago. Traditional surveillance strategies may have underestimated polysubstance use and co-occurring SUDs in active CBP users. RDS proved to be a feasible methodology that could be effectively used for substance use surveillance among hard-to-reach populations.