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52 results on '"Michel, Alain"'

1. Unblinding de Quervain: A systematic review of ultrasound‐guided injection of corticosteroids for treatment of stenosing tenosynovitis of the 1st extensor compartment

Author

Kathy Shiqi He, Kevin Shixiao He, Andre Cheah, Becher Al‐Halabi, Michel Alain Danino, and Johnny Ionut Efanov

Subjects
de Quervain's disease, hand, steroid injection, ultrasound‐guided, Medical physics. Medical radiology. Nuclear medicine, R895-920
Abstract

Abstract A systematic review was conducted on studies reporting steroid injections with ultrasound for de Quervain. From 10 studies included and 379 wrists, 73.9% reported complete resolution of symptoms, 18.2% with partial and 7.9% without resolution. When compared to the landmark‐guided technique, ultrasound guidance showed significantly higher rates of symptom resolution (P = 0.0132) and lower pain scores (P

Published
2023
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4. Left Right Judgement Task and Sensory, Motor, and Cognitive Assessment in Participants with Wrist/Hand Pain

Author

René Pelletier, Daniel Bourbonnais, Johanne Higgins, Maxime Mireault, Michel Alain Danino, and Patrick G. Harris

Subjects
Medicine (General), R5-920
Abstract

The Left Right Judgement Task (LRJT) involves determining if an image of the body part is of the left or right side. The LRJT has been utilized as part of rehabilitation treatment programs for persons with pain associated with musculoskeletal injuries and conditions. Although studies often attribute changes and improvement in LRJT performance to an altered body schema, imaging studies suggest that the LRJT implicates other cortical regions. We hypothesized that cognitive factors would be related to LRJT performance of hands and feet and that sensory, motor, and pain related factors would be related to LRJT in the affected hand of participants with wrist/hand pain. In an observational cross-sectional study, sixty-one participants with wrist/hand pain participated in a study assessing motor imagery ability, cognitive (Stroop test), sensory (Two-Point Orientation Discrimination, pressure pain thresholds), motor (grip strength, Purdue Pegboard Test), and pain related measures (West Haven Yale Multidimensional Pain Inventory) as well as disability (Disability of the Arm, Shoulder and Hand). Multiple linear regression found Stroop test time and motor imagery ability to be related to LRJT performance. Tactile acuity, motor performance, participation in general activities, and the taking of pain medications were predictors of LRJT accuracy in the affected hand. Participants who took pain medications performed poorly in both LRJT accuracy (p=0.001) and reaction time of the affected hand (p=0.009). These participants had poorer cognitive (p=0.013) and motor function (p=0.002), and higher pain severity scores (p=0.010). The results suggest that the LRJT is a complex mental task that involves cognitive, sensory, motor, and behavioural processes. Differences between persons with and without pain and improvement in LRJT performance may be attributed to any of these factors and should be considered in rehabilitation research and practice utilizing this task.

Published
2018
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5. Exposure of human fetal kidneys to mild analgesics interferes with early nephrogenesis

Author

Leverrier‐Penna, Sabrina, primary, Michel, Alain, additional, Lecante, Laetitia L., additional, Costet, Nathalie, additional, Suglia, Antonio, additional, Desdoits‐Lethimonier, Christèle, additional, Boulay, Hugoline, additional, Viel, Roselyne, additional, Chemouny, Jonathan M., additional, Becker, Emmanuelle, additional, Lavoué, Vincent, additional, Rolland, Antoine D., additional, Dejucq‐Rainsford, Nathalie, additional, Vigneau, Cécile, additional, and Mazaud‐Guittot, Séverine, additional

Published
2021
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6. Duration and cessation characteristics of heparinization after finger replantation: A retrospective analysis of outcomes

Author

Julia Khriguian, Joseph Bou-Merhi, Johnny Ionut Efanov, Michel Alain Danino, Elie Boghossian, Sophie Cassier, and Patrick G. Harris

Subjects
Adult, Male, medicine.medical_specialty, Adolescent, medicine.medical_treatment, Subgroup analysis, 030230 surgery, Drug Administration Schedule, law.invention, Young Adult, 03 medical and health sciences, Postoperative Complications, 0302 clinical medicine, Amputation, Traumatic, Randomized controlled trial, law, Finger Injuries, medicine, Humans, Weaning, Infusions, Intravenous, Survival rate, Aged, Retrospective Studies, Postoperative Care, 030222 orthopedics, Heparin, business.industry, Graft Survival, Anticoagulants, Thrombosis, Middle Aged, medicine.disease, Discontinuation, Surgery, Venous thrombosis, Treatment Outcome, Replantation, Anesthesia, Female, business, Follow-Up Studies
Abstract

Background To prevent postoperative thrombosis, indications for anticoagulation in finger replantation have been described, but no consensus has yet been found for cessation protocols. The aim of this study is to investigate cessation methods of intravenous anticoagulation after finger replantation. Methods A retrospective review of all patients treated for a finger replantation between December 2014 and July 2016 was performed. Only those who required postoperative treatment with intravenous heparin were extracted. Primary outcome was survival of finger at hospital discharge and data collection focused on postoperative anticoagulation regimens. Results 108 patients with replantation were treated with intravenous heparin and included in the analysis. When anticoagulated, survival rate was 60% (n = 65) at hospital discharge, wherein arterial and venous thrombosis accounted for 60 and 40% respectively. Descriptive analysis failed to demonstrate an increase in failure rates when tested for duration of intravenous heparin, fixed or variable infusion rates of anticoagulation and need for vascular grafts. However, there was a 2.8-fold (P = .009) increase in the survival rate with progressive weaning of anticoagulation rather than abrupt discontinuation. Subgroup analysis demonstrated similar findings when considering arterial thrombosis alone (OR 5.2, P = .012), but did not show any significant difference for venous thrombosis (OR 1.7, P = .344). Conclusions Progressive tapering of intravenous heparin is associated with an increased survival rate after finger replantation, particularly for arterial thrombosis. Further prospective and randomized trials are necessary to elucidate the optimal duration, method of infusion and indications for vascular grafts.

Published
2017

33. [Untitled]

Author

G. Froyer, Michel-Alain Petit, Abdelouafi Digua, and Jean-Francois Fauvarque

Subjects
chemistry.chemical_classification, Materials science, Infrared spectroscopy, chemistry.chemical_element, Polymer, Photochemistry, Electrochemistry, Catalysis, Nickel, chemistry, Phenylene, Polymer chemistry, Molar mass distribution, Cyclic voltammetry
Abstract

Homogeneous films of poly(1,4-phenylene) (PPP) can be deposited on various materials by electro-reduction of 4,4′-dibromobiphenyl in presence of a nickel complex catalyst. UV and IR spectra indicate that the polymer has a regular structure (exclusively 1,4-phenylene units) and an unusual average molecular weight. The nascent PPP films are obtained in their neutral from and can be either reduced or oxidized.

Published
1987

34. [Untitled]

Author

Jacques Savard, Jean-Francois Fauvarque, Michel-Alain Petit, and Abdelouafi Digua

Subjects
chemistry.chemical_classification, chemistry.chemical_compound, Nickel, Monomer, chemistry, Phenylene, Aryl, Polymer chemistry, chemistry.chemical_element, Polymer, Conjugated system, Electrosynthesis, Catalysis
Abstract

Conjugated polymers were prepared by electroreduction of aryl dihalides in presence of nickel complexes as catalysts. For instance, poly(1,4-phenylene) was obtained from 4,4′-dibromobiphenyl in high yield (85%). According to the coupling mechanism and to IR spectra, the chains of the polymer are expected to have regular para-linkages and an average length ranging from 6 to 18 phenylene units. The effects of temperature, nature of monomer, catalyst and electrolyte on the yields and on the properties of the polymer were explored.

Published
1985

35. [Untitled]

Author

Michel Troupel, Fernando Pflüger, Claude Chevrot, Michel-Alain Petit, Anny Jutand, and Jean-Francois Fauvarque

Subjects
Nickel, chemistry, Electrochemical polymerization, Phenylene, Semiconductor materials, Polymer chemistry, chemistry.chemical_element, Catalysis
Published
1983

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