Distinct clinical patterns in AQP4-IgG- positive NMOSD patients vs. Seronegative: Insights from a single-center study in Argentina.

Background: Distinct clinical course patterns have been identified between AQP4-IgG-positive and AQP4-IgG-negative NMOSD patients.

Objectives: This study aimed to evaluate the differences between AQP4-IgG-seropositive and AQP4-IgG-seronegative NMOSD patients in a single centre in Argentina.

Methods: We performed a retrospective cross-sectional study of 108 NMOSD patients in the city of Buenos Aires, Argentina.

Is thirty-two three tens and two ones? The embedded structure of cardinal numbers.

The acquisition and representation of natural numbers have been a central topic in cognitive science. However, a key question in this topic about how humans acquire the capacity to understand that numbers make 'infinite use of finite means' (or that numbers are generative) has been left unanswered. While previous theories rely on the idea of the successor principle, we propose an alternative hypothesis that children's understanding of the syntactic rules for building complex numerals-or numerical syntax-is a crucial foundation for the acquisition of number concepts.

[Clinical laboratory criteria and its utility as predictive of diagnosis of the cardiopulmonary syndrome by hantavirus].

Background: The hantavirus infection is an emerging zoonotic disease, endemic in Chile, generating the hantavirus cardiopulmonary syndrome (HCPS), characterized by cardiopulmonary dysfunction with rapidly progressive respiratory failure and high lethality. For an early clinical orientation of HCPS, due to its non-specificity in symptoms and to help the differential diagnosis, some laboratory parameter that may be useful have been studied.

Aim: To identify laboratory criteria as predictive factors of HCPS in patients with suspected hantavirus infection.

Development of hyponatremia in non-critical patients receiving total parenteral nutrition: A prospective, multicenter study.

Background & Aims: Hyponatremia is frequent in hospitalized patients, especially in those receiving total parenteral nutrition (TPN). Furthermore, the presence of hyponatremia is associated with increased morbimortality in both groups. The goal of this study is to describe the prevalence of hyponatremia developing during TPN in non-critical patients, and identify risk factors for its appearance.

[Acute necrotizing esophagitis (black esophagus) with secondary severe stenosis].

We report the case of a 67 years old patient with a history of diabetes mellitus, atrial fibrillation and chronic renal failure, who developed diabetic ketoacidosis and severe sepsis, later presenting an acute necrotizing esophagitis, and then a esophageal stenosis requiring treatment with self-expanding esophageal prosthesis with good clinical results.