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F Lofaso F Nicot M Lejaille L Falaize A Louis A Clement J-C Raphael D Orlikowski B Fauroux 《The European respiratory journal》2006,27(5):980-982
Sniff nasal inspiratory pressure (SNIP) measurement is a volitional noninvasive assessment of inspiratory muscle strength. A maximum of 10 sniffs is generally used. The purpose of the present study was to investigate whether the maximum SNIP improved after the tenth sniff. In total, 20 healthy volunteers and 305 patients with various neuromuscular and lung diseases were encouraged to perform 40 and 20 sniffs, respectively. The best SNIP among the first 10 sniffs was lower than the best SNIP among the next 10 sniffs in the healthy volunteers and patients. The SNIP improvement after the twentieth sniff was marginal. In conclusion, a learning effect persists after the tenth sniff. The current authors suggest using 10 additional sniffs when the best result of the first 10 sniffs is slightly below normal, or when sniff nasal inspiratory pressure is used to monitor a progressive decline in inspiratory muscle strength. 相似文献
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D. Orlikowski S. Quijano-Roy V. Sivadon-Tardy J.-C. Raphael J.-L. Gaillard 《Archives de pédiatrie》2006,13(12):1561-1565
Guillain-Barre syndrome (GBS) is a rare disease triggered by postinfectious mechanisms. The disease concerns all ages, and is widely distributed around the world. The principal risks are respiratory failure, especially during the initial phase of the disease, and persisting deficit at long term. Among the infectious known agents, Campylobacter jejuni and CMV represent more than 40% of GBS causes. The clinical presentation, and the long-term prognosis of GBS related to these two etiologies are different. The physiopathological mechanisms of the nervous attack are probably also different. There is no proof, at this time, that anti-infectious treatment can improve the prognosis. The treatment is based on the early use of immunomodulatory treatments like intravenous immunoglobulins or plasma exchanges. 相似文献
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Abdallah Fayssoil Lee S. Nguyen Tanya Stojkovic Helene Prigent Robert Carlier Helge Amthor Jean Bergounioux Justine Zini Sebastien Damez-Fontaine Karim Wahbi Pascal Laforet Guillaume Nicolas Anthony Behin Guillaume Bassez France Leturcq Rabah Ben Yaou Nicolas Mansencal Djillali Annane Frdric Lofaso David Orlikowski 《Muscle & nerve》2022,65(1):89-95
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Krzysztof Zakowski Juliusz Orlikowski Kazimierz Darowicki Marcin Czekajlo Piotr Iglinski Kinga Domanska 《Materials》2021,14(7)
Al-Zn-In alloys having 4.2% zinc content and various indium content in the range of 0.02–0.2% were tested with respect to the most important electrochemical properties of sacrificial anodes in a cathodic protection, i.e., the current capacity and potential of the operating anode. The distribution of In and Zn in the tested alloys was mapped by means of the EDX technique, which demonstrated that these elements dissolve well in the alloy matrix and are evenly distributed within it. The current capacity of such alloys was determined by means of the method of determining the mass loss during the dissolution by a current of known charge. The results obtained demonstrate that the current capacity of Al-Zn-In alloy decreases with the increase in the In content, which results in an increased consumption of anode material and shorter lifetime of anodes. With 0.02% In content, the capacity amounted to approx. 2500 Ah/kg, whereas the alloy with 0.2% In had as much as 30% lower capacity amounting to approx. 1750 Ah/kg. Microscopic examination for the morphology and surface profile of the samples after their exposure demonstrated that a higher indium content in the alloy results in a more uneven general corrosion pattern during the dissolution of such alloy, and the cavities (pits) appearing on the alloy surface are larger and deeper. As the indium content is increased from 0.02% to 0.05%, the Al-Zn-In alloy potential decreases by about 50 mV to −1100 mV vs. Ag/AgCl electrode, which is advantageous in terms of using this alloy as a sacrificial anode. When the indium content is further increased from 0.05% to 0.2%, the potential of the alloy is no longer changed to a more negative one. The results obtained from all these tests demonstrate that alloys containing up to 0.05% of In additive are practically applicable for cathodic protection. 相似文献
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Matthieu Lacombe Aurélien Boré Lorena Del Amo Castrillo Ghilas Boussaïd Line Falaize Erica Vlachos David Orlikowski Hélène Prigent Frédéric Lofaso 《Archives of physical medicine and rehabilitation》2019,100(12):2346-2353
ObjectiveTo study the ability of peak cough flow (PCF) and effective cough volume, defined as the volume exsufflated >3 L/s, to detect upper airway collapse during mechanical insufflation-exsufflation (MI-E) titration in neuromuscular patients.DesignProspective observational study.SettingRehabilitation hospital.ParticipantsPatients (N=27) with neuromuscular disease causing significant impairment of chest wall and/or diaphragmatic movement.InterventionsThe lowest insufflation pressure producing the highest inspiratory capacity was used. Exsufflation pressure was decreased from ?20 cm H2O to ?60/?70 cm H2O, in 10-cm H2O decrements, until upper airway collapse was detected using the reference standard of flow-volume curve analysis (after PCF, abrupt flattening or flow decrease vs previous less negative exsufflation pressure).Main Outcome MeasuresPCF and effective cough volume profiles during expiration with MI-E.ResultsUpper airway collapse occurred in 10 patients during titration. Effective cough volume increased with decreasing expiratory pressure then decreased upon upper airway collapse occurrence. PCF continued to increase after upper airway collapse occurrence. In 5 other patients, upper airway collapse occurred at the initial ?20 cm H2O exsufflation pressure, and during titration, PCF increased and effective cough volume remained unchanged at <200 mL. PCF had 0% sensitivity for upper airway collapse, whereas effective cough volume had 100% sensitivity and specificity.ConclusionOf 27 patients, 15 experienced upper airway collapse during MI-E titration. Upper airway collapse was associated with an effective cough volume decrease or plateau and with increasing PCF. Accordingly, effective cough volume, but not PCF, can detect upper airway collapse. 相似文献
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Background. Infection and epidural abscess are important complicationsof epidural analgesia. Difficult insertion may be associatedwith an increased risk of bacterial contamination of the epiduralneedle or catheter. Methods. Bacterial contamination of epidural needles and trocarsafter difficult epidural insertion, defined as two or more skinpasses, was assessed in 38 obstetric and ten gynaecologicalpatients. Results. There was no bacterial growth on any of the 48 epiduralneedles or trocars despite the mean (range) insertion time being20 (1030) min and the number of insertion attempts being3 (24). Conclusions. Difficult epidural insertion is not associatedwith an increased risk of needle contamination and is thereforean unlikely source of epidural infection. Br J Anaesth 2002; 89: 9224 相似文献