Publications by authors named "M I Alvarez-Olmos"

Background: Multisystem inflammatory syndrome (MIS-C) represents a diagnostic challenge because of its overlap with Kawasaki disease, Kawasaki disease shock syndrome, and toxic shock syndrome. Macrophage activation syndrome (MAS) is a frequently fatal complication of various pediatric inflammatory disorders and has been reported in MIS-C. Early diagnosis and prompt initiation by immune modulating therapies are essential for effectively managing MAS.

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  • The study aimed to investigate the epidemiology and outcomes of multisystem inflammatory syndrome in children (MIS-C) across 16 Latin American countries from August 2020 to June 2022.
  • Out of 1239 children with MIS-C, the majority were previously healthy, with common symptoms including abdominal pain and conjunctival injection, and nearly half required intensive care.
  • The overall death rate was 4.88%, notably higher for those not initially diagnosed with MIS-C, emphasizing the need for improved awareness and early detection of the syndrome.
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  • * A total of 530 patients were reported, with the majority exhibiting pneumonia; the study highlighted high rates of ICU admissions (50.6%) and notable resistance to antibiotics among meningial and non-meningial isolates.
  • * The findings indicated a decrease in PCV10 serotypes but an increase in the prevalence of serotypes 19A and 6C, leading to Colombia's decision to switch to the PCV13 vaccine in July 202
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  • Multisystem inflammatory syndrome in children (MIS-C) related to COVID-19 shows varied severity, with a lower mortality rate in wealthier countries, highlighting differences in outcomes across regions.
  • In a study of 1,239 children across 16 Latin American countries, the majority were previously healthy, but nearly half required admission to the pediatric intensive care unit (PICU), where they experienced more severe symptoms like myocardial dysfunction.
  • Key risk factors for PICU admission included being over six years old, experiencing shock or seizures, having low platelet counts, elevated inflammatory markers, and abnormalities on chest X-rays, with an overall mortality rate of 4.8%, which is notably higher than in high-income countries.
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Objectives: To describe the clinical presentation, management, and outcomes of Kawasaki disease (KD) in Latin America and to evaluate early prognostic indicators of coronary artery aneurysm (CAA).

Study Design: An observational KD registry-based study was conducted in 64 participating pediatric centers across 19 Latin American countries retrospectively between January 1, 2009, and December 31, 2013, and prospectively from June 1, 2014, to May 31, 2017. Demographic and initial clinical and laboratory data were collected.

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