Myocardial function, mechanics and work by echocardiography in adolescents with severe obesity.

Introduction: Obesity and its metabolic complications can impact the heart's structure and function in childhood, although demonstrating this impact has been challenging. New echocardiographic parameters such as left atrial strain (LAε) and left ventricular strain (LVε), as well as myocardial work (MW), could reveal subclinical alterations in cardiac function.

Objective: The aim is to evaluate the feasibility of these parameters in adolescents with severe obesity and explore their associations with body fat, metabolic comorbidities, and physical capacity.

Vitamin D deficiency in adolescents: is there a difference according to the degree of obesity?

Objective: To analyze the frequency of vitamin D (VD) deficiency in adolescents with different degrees of obesity and its association with alterations in the metabolic profile.

Patients And Method: Cross-sectional, descriptive, and analytical study in 250 adolescents with different degrees of obesity, treated at the nutrition polyclinic of the Hospital Dr. Sotero del Río.

Helicobacter pylori infection and UBT-13C values are associated with changes in body mass index in children and adults.

Background: The urea breath test (UBT-13C) is a non-invasive technique that allows the diagnosis and confirmation of eradication of Helicobacter pylori infection.

Aim: To evaluate H. pylori positivity and values of UBT-13C among infected Chilean children and adults, and to analyze its variation in relation to sex, nutritional status, and age of the patients.