Publications by authors named "J Penalva"

Background: Post-colonoscopy colorectal cancer (PCCRC) is colorectal cancer (CRC) diagnosed after a colonoscopy in which no cancer is found.

Objective: As PCCRC has become an important quality indicator, we determined its rates, characteristics, and index colonoscopy-related predictive factors.

Methods: We carried out a multicenter, observational, retrospective study between 2015 and 2018.

View Article and Find Full Text PDF

The phenomenon of slow passage through a Hopf bifurcation is ubiquitous in multiple-timescale dynamical systems, where a slowly varying quantity replacing a static parameter induces the solutions of the resulting slow-fast system to feel the effect of the Hopf bifurcation with a delay. This phenomenon is well understood in the context of smooth slow-fast dynamical systems; in the present work, we study it for the first time in piecewise linear (PWL) slow-fast systems. This special class of systems is indeed known to reproduce all features of their smooth counterpart while being more amenable to quantitative analysis and offering some level of simplification, in particular, through the existence of canonical (linear) slow manifolds.

View Article and Find Full Text PDF

Objective: To explore changes in pain, spasticity, range of motion, activities of daily living, bowel and lower urinary tract function and quality of life of individuals with spinal cord injury following robotic exoskeleton gait training.

Design: Prospective, observational, open-label multicentre study.

Methods: Three training sessions per week for 8 weeks using an Ekso™ GT robotic exoskeleton (EKSO Bionics).

View Article and Find Full Text PDF

This paper seeks to analyze the Judiciary's approach with respect to demands for the judicialization of the right to health by means of a case study of civil lawsuits for access to health care in Brazil's Federal District. Judicialization of the right to health signifies the judicialization of various of the health services provided. This is a descriptive and exploratory case study that covers the Federal District and uses mixed techniques to gather and analyze data.

View Article and Find Full Text PDF

This paper describes the magnitude of the medical care for pregnant women with an anencephalic fetus. Anencephaly is an abnormality incompatible with life. The right to abort in this case is under litigation at the Brazilian Supreme Court.

View Article and Find Full Text PDF