Jean-François Vibert

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BACKGROUND Present guidelines recommend routine daily chest radiographs for mechanically ventilated patients in intensive care units. However, some units use an on-demand strategy, in which chest radiographs are done only if warranted by the patient's clinical status. By comparison between routine and on-demand strategies, we aimed to establish which(More)
This communication compares the well known phenomenon of respiratory driving by the respiratory pump through the Breuer Hering reflex with a model (Segundo, 1979) of a neuronal pacemaker (i.e. regularly firing) interactions via IPSP's. The assumption involves a linear dependence (“delay function”) of the postsynaptic interval lengthening (or “delay”)(More)
It is still unclear whether the respiratory-like rhythm observed in slice preparations containing the pre-Bötzinger complex is of pacemaker or network origin. The rhythm persists in the absence of inhibition, but blocking pacemaker activity did not always result in rhythm abolition. We developed a computational model of the slice to show that(More)
This paper proposes a method to visualize the semantic content of data bases where the medical information is coded with the International Classification of Primary Care. The main idea is the identification of a pixel with a code and the conversion of all the data associated with these into an image the ICPCview. The method proceeds in two step, defining(More)
BACKGROUND Interstitial lung diseases (ILDs) in children represent a heterogeneous group of rare respiratory disorders that affect the lung parenchyma. After the launch of the French Reference Centre for Rare Lung Diseases (RespiRare®), we created a national network and a web-linked database to collect data on pediatric ILD. METHODS Since 2008, the(More)
BACKGROUND Strategies for ordering bedside chest radiographs (CXRs) have substantial logistic and financial consequences in the ICU. Many of the indications for CXRs in the ICU are controversial, such as the ordering of daily routine CXRs for intubated patients. The opinions of intensivists about ordering CXRs have not been reported. Comparing these(More)
There is experimental evidence that neuronal electrical activity directly influences neurite outgrowth during the development of the nervous system. Using model studies, Van Ooyen and Van Pelt extensively investigated the effect of this phenomenon upon network development and architecture. Their studies are based on the experimental observations that there(More)
A mathematical model designed originally for pacemaker neurons and post synaptic potentials represents acceptably respiratory driving by a pump through the Hering-Breuer reflex (Vibert et al. 1981). Discrepancies with the respiratory embodiment arose firstly in the zig-zag plots of average driving and driven intervals where the boundaries between positively(More)