[Pregnancy and motherhood in adolescence].

Adolescence and pregnancy are two periods which involve major psychological and identity changes. Teenage pregnancies are often considered to be a result of a confusion between these periods. The circumstances of teenage pregnancies and early motherhood are diverse and sit within the wider context of the psychopathology of adolescence, the heterogeneity of family configurations and evolutions in society.

From forest to cropland and pasture systems: a critical review of soil organic carbon stocks changes in Amazonia.

The impact of deforestation on soil organic carbon (SOC) stocks is important in the context of climate change and agricultural soil use. Trends of SOC stock changes after agroecosystem establishment vary according to the spatial scale considered, and factors explaining these trends may differ sometimes according to meta-analyses. We have reviewed the knowledge about changes in SOC stocks in Amazonia after the establishment of pasture or cropland, sought relationships between observed changes and soil, climatic variables and management practices, and synthesized the δ C measured in pastures.

A randomized trial of catheter change and short course of antibiotics for asymptomatic bacteriuria in catheterized ICU patients.

Objective: To determine the effect on the occurrence of urosepsis of a treatment with a short course of antibiotics and indwelling urethral catheter replacement in clinically asymptomatic intensive care unit (ICU) patients with a positive urine culture occurring at least 48 h after catheterization.

Methods: A prospective randomized clinical trial was conducted in the medico-surgical ICU of a tertiary care centre. Sixty patients hospitalized in the ICU with an indwelling urethral catheter for longer than 48 h developing an asymptomatic positive urine culture were randomized to receive either a 3-day course of antibiotics associated with the replacement of the indwelling urethral catheter 4 h after first antibiotic administration or no antibiotics, no catheter replacement (standard of care).