Titre : Barrière hémato-encéphalique

Barrière hémato-encéphalique : Questions médicales fréquentes

Termes MeSH sélectionnés :

Platelet Transfusion
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hémato-encéphalique", "description": "Comment évaluer l'intégrité de la barrière hémato-encéphalique ?\nQuels signes indiquent une défaillance de la barrière ?\nQuels tests sanguins sont utiles pour le diagnostic ?\nLa biopsie est-elle nécessaire pour le diagnostic ?\nQuels examens neurologiques sont recommandés ?", "url": "https://questionsmedicales.fr/mesh/D001812?mesh_terms=Platelet+Transfusion&page=3#section-diagnostic" }, { "@type": "MedicalWebPage", "name": "Symptômes", "headline": "Symptômes sur Barrière hémato-encéphalique", "description": "Quels symptômes sont associés à une barrière défaillante ?\nLa confusion mentale est-elle un symptôme ?\nDes convulsions peuvent-elles se produire ?\nQuels symptômes neurologiques sont préoccupants ?\nLa fatigue chronique est-elle liée à cette condition ?", "url": "https://questionsmedicales.fr/mesh/D001812?mesh_terms=Platelet+Transfusion&page=3#section-symptômes" }, { "@type": "MedicalWebPage", "name": "Prévention", "headline": "Prévention sur Barrière hémato-encéphalique", "description": "Comment prévenir les troubles de la barrière hémato-encéphalique ?\nLes vaccinations sont-elles importantes ?\nLe contrôle de la pression artérielle aide-t-il ?\nL'alimentation joue-t-elle un rôle ?\nLe stress peut-il affecter la barrière ?", "url": "https://questionsmedicales.fr/mesh/D001812?mesh_terms=Platelet+Transfusion&page=3#section-prévention" }, { "@type": "MedicalWebPage", "name": "Traitements", "headline": "Traitements sur Barrière hémato-encéphalique", "description": "Quels traitements sont disponibles pour les troubles de la barrière ?\nLa chirurgie est-elle une option de traitement ?\nLes corticostéroïdes sont-ils utilisés ?\nY a-t-il des traitements expérimentaux ?\nComment la rééducation peut-elle aider ?", "url": "https://questionsmedicales.fr/mesh/D001812?mesh_terms=Platelet+Transfusion&page=3#section-traitements" }, { "@type": "MedicalWebPage", "name": "Complications", "headline": "Complications sur Barrière hémato-encéphalique", "description": "Quelles complications peuvent survenir ?\nLes AVC sont-ils une complication possible ?\nDes troubles cognitifs peuvent-ils se développer ?\nLa démence est-elle une complication ?\nLes troubles psychiatriques sont-ils possibles ?", "url": "https://questionsmedicales.fr/mesh/D001812?mesh_terms=Platelet+Transfusion&page=3#section-complications" }, { "@type": "MedicalWebPage", "name": "Facteurs de risque", "headline": "Facteurs de risque sur Barrière hémato-encéphalique", "description": "Quels facteurs augmentent le risque de défaillance ?\nLe diabète est-il un facteur de risque ?\nL'alcoolisme influence-t-il la barrière ?\nLe tabagisme est-il un risque ?\nLes infections virales sont-elles préoccupantes ?", "url": "https://questionsmedicales.fr/mesh/D001812?mesh_terms=Platelet+Transfusion&page=3#section-facteurs de risque" } ] }, { "@type": "FAQPage", "mainEntity": [ { "@type": "Question", "name": "Comment évaluer l'intégrité de la barrière hémato-encéphalique ?", "position": 1, "acceptedAnswer": { "@type": "Answer", "text": "Des tests d'imagerie comme l'IRM et des analyses de liquide céphalorachidien sont utilisés." } }, { "@type": "Question", "name": "Quels signes indiquent une défaillance de la barrière ?", "position": 2, "acceptedAnswer": { "@type": "Answer", "text": "Des symptômes neurologiques, des infections ou des inflammations peuvent indiquer une défaillance." } }, { "@type": "Question", "name": "Quels tests sanguins sont utiles pour le diagnostic ?", "position": 3, "acceptedAnswer": { "@type": "Answer", "text": "Des tests pour détecter des anticorps ou des marqueurs inflammatoires peuvent être effectués." } }, { "@type": "Question", "name": "La biopsie est-elle nécessaire pour le diagnostic ?", "position": 4, "acceptedAnswer": { "@type": "Answer", "text": "Rarement, sauf dans des cas spécifiques comme les tumeurs cérébrales ou infections." } }, { "@type": "Question", "name": "Quels examens neurologiques sont recommandés ?", "position": 5, "acceptedAnswer": { "@type": "Answer", "text": "Des examens neurologiques complets, y compris des tests de réflexes et de coordination." } }, { "@type": "Question", "name": "Quels symptômes sont associés à une barrière défaillante ?", "position": 6, "acceptedAnswer": { "@type": "Answer", "text": "Des maux de tête, des troubles de la vision, et des changements de comportement peuvent survenir." } }, { "@type": "Question", "name": "La confusion mentale est-elle un symptôme ?", "position": 7, "acceptedAnswer": { "@type": "Answer", "text": "Oui, la confusion mentale peut résulter d'une altération de la barrière hémato-encéphalique." } }, { "@type": "Question", "name": "Des convulsions peuvent-elles se produire ?", "position": 8, "acceptedAnswer": { "@type": "Answer", "text": "Oui, des convulsions peuvent être un signe d'irritation cérébrale due à une défaillance." } }, { "@type": "Question", "name": "Quels symptômes neurologiques sont préoccupants ?", "position": 9, "acceptedAnswer": { "@type": "Answer", "text": "Des engourdissements, des faiblesses musculaires ou des troubles de l'équilibre sont préoccupants." } }, { "@type": "Question", "name": "La fatigue chronique est-elle liée à cette condition ?", "position": 10, "acceptedAnswer": { "@type": "Answer", "text": "Oui, la fatigue chronique peut être un symptôme associé à des troubles de la barrière." } }, { "@type": "Question", "name": "Comment prévenir les troubles de la barrière hémato-encéphalique ?", "position": 11, "acceptedAnswer": { "@type": "Answer", "text": "Maintenir un mode de vie sain, éviter les toxines et gérer les maladies chroniques aide." } }, { "@type": "Question", "name": "Les vaccinations sont-elles importantes ?", "position": 12, "acceptedAnswer": { "@type": "Answer", "text": "Oui, les vaccinations peuvent prévenir certaines infections qui affectent la barrière." } }, { "@type": "Question", "name": "Le contrôle de la pression artérielle aide-t-il ?", "position": 13, "acceptedAnswer": { "@type": "Answer", "text": "Oui, un bon contrôle de la pression artérielle peut réduire le risque de défaillance." } }, { "@type": "Question", "name": "L'alimentation joue-t-elle un rôle ?", "position": 14, "acceptedAnswer": { "@type": "Answer", "text": "Une alimentation équilibrée riche en antioxydants peut protéger la barrière hémato-encéphalique." } }, { "@type": "Question", "name": "Le stress peut-il affecter la barrière ?", "position": 15, "acceptedAnswer": { "@type": "Answer", "text": "Oui, le stress chronique peut avoir un impact négatif sur la santé de la barrière." } }, { "@type": "Question", "name": "Quels traitements sont disponibles pour les troubles de la barrière ?", "position": 16, "acceptedAnswer": { "@type": "Answer", "text": "Les traitements incluent des médicaments anti-inflammatoires et des thérapies ciblées." } }, { "@type": "Question", "name": "La chirurgie est-elle une option de traitement ?", "position": 17, "acceptedAnswer": { "@type": "Answer", "text": "La chirurgie peut être nécessaire pour retirer des tumeurs ou traiter des infections." } }, { "@type": "Question", "name": "Les corticostéroïdes sont-ils utilisés ?", "position": 18, "acceptedAnswer": { "@type": "Answer", "text": "Oui, les corticostéroïdes peuvent réduire l'inflammation et améliorer la fonction de la barrière." } }, { "@type": "Question", "name": "Y a-t-il des traitements expérimentaux ?", "position": 19, "acceptedAnswer": { "@type": "Answer", "text": "Des traitements expérimentaux incluent des thérapies géniques et des médicaments innovants." } }, { "@type": "Question", "name": "Comment la rééducation peut-elle aider ?", "position": 20, "acceptedAnswer": { "@type": "Answer", "text": "La rééducation peut aider à restaurer les fonctions neurologiques altérées par des troubles." } }, { "@type": "Question", "name": "Quelles complications peuvent survenir ?", "position": 21, "acceptedAnswer": { "@type": "Answer", "text": "Des infections, des inflammations et des troubles neurologiques graves peuvent survenir." } }, { "@type": "Question", "name": "Les AVC sont-ils une complication possible ?", "position": 22, "acceptedAnswer": { "@type": "Answer", "text": "Oui, une défaillance de la barrière peut augmenter le risque d'accidents vasculaires cérébraux." } }, { "@type": "Question", "name": "Des troubles cognitifs peuvent-ils se développer ?", "position": 23, "acceptedAnswer": { "@type": "Answer", "text": "Oui, des troubles cognitifs peuvent résulter d'une altération prolongée de la barrière." } }, { "@type": "Question", "name": "La démence est-elle une complication ?", "position": 24, "acceptedAnswer": { "@type": "Answer", "text": "Oui, certaines formes de démence peuvent être liées à des dysfonctionnements de la barrière." } }, { "@type": "Question", "name": "Les troubles psychiatriques sont-ils possibles ?", "position": 25, "acceptedAnswer": { "@type": "Answer", "text": "Oui, des troubles psychiatriques peuvent être exacerbés par des problèmes de barrière." } }, { "@type": "Question", "name": "Quels facteurs augmentent le risque de défaillance ?", "position": 26, "acceptedAnswer": { "@type": "Answer", "text": "L'âge avancé, les maladies auto-immunes et les infections sont des facteurs de risque." } }, { "@type": "Question", "name": "Le diabète est-il un facteur de risque ?", "position": 27, "acceptedAnswer": { "@type": "Answer", "text": "Oui, le diabète peut affecter la santé de la barrière hémato-encéphalique." } }, { "@type": "Question", "name": "L'alcoolisme influence-t-il la barrière ?", "position": 28, "acceptedAnswer": { "@type": "Answer", "text": "Oui, l'alcoolisme chronique peut endommager la barrière hémato-encéphalique." } }, { "@type": "Question", "name": "Le tabagisme est-il un risque ?", "position": 29, "acceptedAnswer": { "@type": "Answer", "text": "Oui, le tabagisme est associé à une augmentation des troubles neurologiques." } }, { "@type": "Question", "name": "Les infections virales sont-elles préoccupantes ?", "position": 30, "acceptedAnswer": { "@type": "Answer", "text": "Oui, certaines infections virales peuvent compromettre la barrière hémato-encéphalique." } } ] } ] }

Sources (7197 au total)

Systematic reviews on platelet transfusions: Is there unnecessary duplication of effort? A scoping review.

Platelet transfusions are used across multiple patient populations to prevent and correct bleeding. This scoping review aimed to map the currently available systematic reviews (SRs) and evidence-based... A systematic literature search was conducted in seven databases for SRs on effectiveness (including dose and timing, transfusion trigger and ratio to other blood products), production modalities and d... We identified 110 SRs. The majority focused on clinical effectiveness, including prophylactic or therapeutic transfusions compared to no platelet transfusion (34 SRs), prophylactic compared to therape... An interactive evidence map of SRs and evidence-based guidelines in the field of platelet transfusion has been developed and identified multiple reviews. This work serves as a tool for researchers loo...

The safety of ABO minor incompatible platelets transfusions using a rapid infuser.

Administering platelets through a rapid infuser is proven to be safe. However, the clinical significance of infusing ABO-incompatible platelets with red blood cells (RBCs) in a rapid infuser remains u... Seven in vitro studies were performed including five cases (type A RBCs and type O platelets) and two controls (type A RBCs and platelets). Anti-A titers were measured in platelet units. An RBC unit a... The post-mix DAT was positive for IgG in all test samples (5/5), and weakly positive for complement in 3/5. The changes in free Hb in test cases between measured and calculated post-mix spanned -2.2 t... Our study suggested that mixing ABO-incompatible platelets with RBCs in a rapid infuser does not induce in vitro hemolysis. These findings support the use of rapid infusers regardless of platelet comp...

Therapeutic Efficacy of Platelet Transfusion and Analysis of Influencing Factors in 364 patients.

The aims of this study were to observe the therapeutic effect of platelet (PLT) transfusion and to analyze influencing factors for the sake of providing useful clues for improving the efficacy of PLT ... Included in this study were patients who received PLT transfusion in the affiliated hospital of Nantong University. Patients' sex, age, height, weight, PLT transfusion status, and 20-24-h PLT count be... A total of 364 patients received 1,060 PLT transfusions, including 728 successful transfusions and 332 unsuccessful transfusions. When the patients were grouped according to different etiologies, sign... To reduce PTR, multiple factors should be considered comprehensively when PLT transfusion therapy is to be implemented in clinical practice. PLT antibody is the main immune factor causing PTR....

Platelet transfusion practice pattern before and after implementation of a local restrictive transfusion protocol in a neonatal intensive care unit.

Following the results of the PlaNeT-2 randomized controlled trial showing decreased morbidity and mortality in neonates transfused at a threshold of 25 versus 50 × 10... Prospective observational cohort chart-review study comparing all neonates consecutively admitted to the NICU during two 5-months periods: 2013 (before; N = 401) versus 2021 (after; N = 402). Possible... Mean (± standard deviation) gestational age and birth weight were 34.9 ± 4.2 weeks and 2.5 ± 1.0 kg, respectively. In 2021, 5.0% were platelet-transfused versus 9.2% in 2013 (p = .027). Platelet trans... Restrictive local transfusion thresholds in a NICU decreased the proportion of platelet-transfused neonates by 46% and reduced donor exposure in transfused patients....

Two-year outcomes following a randomised platelet transfusion trial in preterm infants.

Assess mortality and neurodevelopmental outcomes at 2 years of corrected age in children who participated in the PlaNeT-2/MATISSE (Platelets for Neonatal Transfusion - 2/Management of Thrombocytopenia... Randomised clinical trial, enrolling from June 2011 to August 2017. Follow-up was complete by January 2020. Caregivers were not blinded; however, outcome assessors were blinded to treatment group.... 43 level II/III/IV neonatal intensive care units (NICUs) across UK, Netherlands and Ireland.... 660 infants born at less than 34 weeks' gestation with platelet counts less than 50×10... Infants were randomised to undergo a platelet transfusion at platelet count thresholds of 50×10... Our prespecified long-term follow-up outcome was a composite of death or neurodevelopmental impairment (developmental delay, cerebral palsy, seizure disorder, profound hearing or vision loss) at 2 yea... Follow-up data were available for 601 of 653 (92%) eligible participants. Of the 296 infants assigned to the higher threshold group, 147 (50%) died or survived with neurodevelopmental impairment, as c... Infants randomised to a higher platelet transfusion threshold of 50×10... ISRCTN87736839....

Aged versus fresh autologous platelet transfusion in a two-hit healthy volunteer model of transfusion-related acute lung injury.

Transfusion-related acute lung injury (TRALI) is a severe complication of blood transfusion that is thought of as a two-hit event: first the underlying patient condition (e.g., sepsis), and then the t... In a randomized controlled trial, 18 healthy male volunteers received a first hit of experimental endotoxemia (2 ng/kg lipopolysaccharide), and a second hit of fresh (2-day old) or aged (7-day old) au... All subjects reacted adequately to lipopolysaccharide infusion and satisfied SIRS criteria (increased pulse [>90/min] and temperature [>38°C]). There were no differences between the saline, fresh, and... In a human endotoxemia model of autologous platelet transfusion, with an adequate first hit and platelet storage lesion, transfusion of 7-day-old PC does not increase pulmonary inflammation compared w...

A randomized cross-over study of cryopreserved platelets in prophylactic transfusions of thrombocytopenic patients.

The short shelf-life of liquid-stored platelets (LP) at 20-24°C poses shortage and wastage challenges. Cryopreserved platelets have significantly extended shelf-life, and were safe and efficacious for... We performed a phase 1b/2a randomized cross-over study comparing the safety and efficacy of cryopreserved buffy coat-derived pooled platelets (CP) to LP in the prophylactic transfusions of thrombocyto... A total of 18 adults were randomly assigned 1:1 to CP and LP for their first thrombocytopenic period (TP) of up to 28-days. A total of 14 crossed over to the other platelet-arm for the second TP. Over... During shortages, CP may supplement LP in prophylactic transfusions of thrombocytopenic patients....