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Accuracy of oxygen flow delivered by compressed-gas cylinders in hospitals and prehospital emergency care
mars 2018, Duprez, Frédéric; Michotte, Jean-Bernard; Cuvelier, Grégory; Legrand, Alexandre; Mashayekhi, Sharam; Reychler, Grégory, HE CondorcetArticle scientifiqueOxygen cylinders are widely used both in hospital and prehospital care. Excessive or inappropriate FIO2 may be critical for patients with hypercapnia or hypoxia. Moreover, over-oxygenation could be deleterious in ischemic disorders. Supplemental oxygen from oxygen cylinder should therefore be delivered accurately. The aim of this study was to assess the accuracy of oxygen flows for oxygen cylinder ... -
Beetroot juice does not enhance supramaximal intermittent exercise performance in elite endurance athletes
14 mai 2019, Pawlak-Chaouch, Mehdi; Boissière, Julien; Munyaneza, Désiré; Gamelin, François-Xavier; Cuvelier, Grégory; Berthoin, Serge; Aucouturier, Julien, HE CondorcetArticle scientifique -
Cannabidiol in sport : Ergogenic or else ?
20 mars 2020, Gamelin, François-Xavier; Cuvelier, Grégory; Mendes, Antoine; Aucouturier, Julien; Berthoin, Serge; Di Marzo, Vincenzo; Heyman, Elsa, HE CondorcetArticle scientifiqueIn the sports domain, cannabis is prohibited by the World Anti-Doping Agency (WADA) across all sports in competition since 2004. The few studies on physical exercise and cannabis focused on the main compound i.e. Δ9-tetrahydrocannabinol. Cannabidiol (CBD) is another well-known phytocannabinoid present in dried or heated preparations of cannabis. Unlike Δ9-tetrahydrocannabinol, CBD is non-intoxicating ... -
The double trunk mask improves oxygenation during high-flow nasal cannula therapy for acute hypoxemic respiratory failure
30 avril 2019, Duprez, Frédéric; Bruyneel, Arnaud; Machayekhi, Shahram; Droguet, Marie; Bouckaert, Yves; Brimiouille, Serge; Cuvelier, Grégory; Reychler, Grégory, HE CondorcetArticle scientifiqueHigh-flow nasal cannula (HFNC) oxygen therapy is used to deliver an FIO2 from 0.21 to 1.0. The double-trunk mask (DTM) is a device designed to increase the FIO2 in patients with a high inspiratory flow demand. The aim of our study was to evaluate the effect of DTM in hypoxemic subjects already receiving HFNC. -
Energy expenditure of household activities and cardiorespiratory fitness in women with obesity
19 septembre 2018, Dereppe, Hubert; Verbeke, M.; Debruxelles, Coralie; Boucq, Elise; Ponzoni, L.; Cuvelier, Grégory, HE CondorcetArticle scientifique -
A new formula for predicting the fraction of delivered oxygen during low-flow oxygen therapy
décembre 2018, Duprez, Frédéric; Machayekhi, Shahram; Cuvelier, Grégory; Legrand, Alexandre; Reychler, Grégory, HE CondorcetArticle scientifiqueDuring O2 therapy at low flow in patients who breathe spontaneously, the fraction of delivered O2 (FDO2) is unknown. In recent years, FDO2 prediction formulas have been proposed. However, they do not take into account the effect of inspiratory flow (V̇I) on the FDO2. The aim of this study was to validate a new FDO2 prediction formula, which takes into account the V̇I and compares it with other FDO2 ... -
Plasma asymmetric dimethylarginine concentrations are not related to differences in maximal oxygen uptake in endurance trained and untrained men
22 novembre 2018, Pawlak-Chaouch, Mehdi; Boissière, Julien; Munyaneza, Désiré; Tagougui, Semah; Gamelin, François-Xavier; Cuvelier, Grégory; Heyman, Elsa; Goossens, Jean-François; Descat, Amandine; Berthoin, Serge; Aucouturier, Julien, HE CondorcetArticle scientifiqueAsymmetric dimethylarginine (ADMA) is an endogenous inhibitor of nitric oxide (NO) synthesis that could limit oxygen (O2) delivery in the working skeletal muscles by altering endothelium‐dependent vasodilatation. Exercise capacity is associated with plasma ADMA concentrations in patients with cardiovascular diseases, but this issue has still not been investigated in healthy subjects. We aimed to ... -
Thorpe tube and oxygen flow restrictor : what's flow accuracy ?
10 février 2020, Duprez, Frédéric; Dubois, Adrien; Ollieuz, Sandra; Cuvelier, Grégory; Reychler, Grégory, HE CondorcetArticle scientifiqueOxygen gas flowmeters (OGF) are used to regulate the oxygen flow in acute and chronic care. In hospitals, Thorpe tubes (TT) are the classical systems most used for delivering oxygen. In recent years, the oxygen flow restrictor (OFR) has appeared. These devices use a series of calibrated openings in a disk that can be adjusted to deliver different flow rates. These devices have a reputation for ... -
Variability of fractional delivered oxygen (FDO2) with nasal cannula
10 janvier 2017, Duprez, Frédéric; Bonus, Thierry; Cuvelier, Grégory; Machayekhi, Sharam; Ollieuz, Sandra; Reychler, Grégory, HE CondorcetActe de conférence ou de colloque -
Where should we place the stethoscope's chestpiece to hear the noise of the primary bronchi ?
10 janvier 2017, Duprez, Frédéric; Dupuis, Bastien; Cuvelier, Grégory; Bonus, Thierry; Ollieuz, Sandra; Machayekhi, Sharam; Reychler, Grégory, HE CondorcetActe de conférence ou de colloque