Titre : Carence en vitamine B12

Carence en vitamine B12 : Questions médicales fréquentes

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peut-elle être asymptomatique ?\nQuel rôle joue l'historique médical dans le diagnostic ?", "url": "https://questionsmedicales.fr/mesh/D014806?page=1000#section-diagnostic" }, { "@type": "MedicalWebPage", "name": "Symptômes", "headline": "Symptômes sur Carence en vitamine B12", "description": "Quels sont les symptômes courants de la carence en B12 ?\nLa carence en B12 peut-elle causer des problèmes neurologiques ?\nComment la carence affecte-t-elle la peau ?\nY a-t-il des symptômes digestifs associés ?\nLes symptômes varient-ils selon l'âge ?", "url": "https://questionsmedicales.fr/mesh/D014806?page=1000#section-symptômes" }, { "@type": "MedicalWebPage", "name": "Prévention", "headline": "Prévention sur Carence en vitamine B12", "description": "Comment prévenir la carence en vitamine B12 ?\nLes personnes âgées doivent-elles prendre des suppléments ?\nLes végétaliens peuvent-ils éviter la carence ?\nLes tests réguliers sont-ils recommandés ?\nLes maladies digestives augmentent-elles le risque ?", "url": "https://questionsmedicales.fr/mesh/D014806?page=1000#section-prévention" }, { "@type": "MedicalWebPage", "name": "Traitements", "headline": "Traitements sur Carence en vitamine B12", "description": "Comment traiter une carence en vitamine B12 ?\nQuelle est la durée du traitement ?\nLes aliments peuvent-ils aider à corriger la carence ?\nLes personnes végétariennes sont-elles à risque ?\nLes traitements sont-ils différents pour les enfants ?", "url": "https://questionsmedicales.fr/mesh/D014806?page=1000#section-traitements" }, { "@type": "MedicalWebPage", "name": "Complications", "headline": "Complications sur Carence en vitamine B12", "description": "Quelles complications peuvent survenir ?\nLa carence peut-elle entraîner des problèmes cognitifs ?\nY a-t-il un risque accru de maladies cardiovasculaires ?\nLes complications sont-elles réversibles ?\nLa carence en B12 peut-elle affecter la grossesse ?", "url": "https://questionsmedicales.fr/mesh/D014806?page=1000#section-complications" }, { "@type": "MedicalWebPage", "name": "Facteurs de risque", "headline": "Facteurs de risque sur Carence en vitamine B12", "description": "Qui est le plus à risque de carence en B12 ?\nLes maladies auto-immunes augmentent-elles le risque ?\nLes médicaments peuvent-ils influencer le risque ?\nLes troubles digestifs sont-ils un facteur de risque ?\nLes antécédents familiaux jouent-ils un rôle ?", "url": "https://questionsmedicales.fr/mesh/D014806?page=1000#section-facteurs de risque" } ] }, { "@type": "FAQPage", "mainEntity": [ { "@type": "Question", "name": "Comment diagnostiquer une carence en vitamine B12 ?", "position": 1, "acceptedAnswer": { "@type": "Answer", "text": "Un diagnostic se fait par des analyses sanguines mesurant les niveaux de vitamine B12." } }, { "@type": "Question", "name": "Quels tests sont utilisés pour confirmer la carence ?", "position": 2, "acceptedAnswer": { "@type": "Answer", "text": "Les tests incluent la mesure de la vitamine B12, de l'homocystéine et de la méthylmalonyl-CoA." } }, { "@type": "Question", "name": "Quels signes cliniques indiquent une carence ?", "position": 3, "acceptedAnswer": { "@type": "Answer", "text": "Des signes comme l'anémie, la fatigue, et des troubles neurologiques peuvent indiquer une carence." } }, { "@type": "Question", "name": "La carence en B12 peut-elle être asymptomatique ?", "position": 4, "acceptedAnswer": { "@type": "Answer", "text": "Oui, certaines personnes peuvent avoir une carence sans présenter de symptômes visibles." } }, { "@type": "Question", "name": "Quel rôle joue l'historique médical dans le diagnostic ?", "position": 5, "acceptedAnswer": { "@type": "Answer", "text": "L'historique médical aide à identifier des facteurs de risque comme des troubles d'absorption." } }, { "@type": "Question", "name": "Quels sont les symptômes courants de la carence en B12 ?", "position": 6, "acceptedAnswer": { "@type": "Answer", "text": "Les symptômes incluent fatigue, faiblesse, engourdissements et troubles de l'humeur." } }, { "@type": "Question", "name": "La carence en B12 peut-elle causer des problèmes neurologiques ?", "position": 7, "acceptedAnswer": { "@type": "Answer", "text": "Oui, elle peut entraîner des troubles neurologiques comme des démences ou des neuropathies." } }, { "@type": "Question", "name": "Comment la carence affecte-t-elle la peau ?", "position": 8, "acceptedAnswer": { "@type": "Answer", "text": "Elle peut provoquer des changements cutanés comme une pâleur ou des lésions cutanées." } }, { "@type": "Question", "name": "Y a-t-il des symptômes digestifs associés ?", "position": 9, "acceptedAnswer": { "@type": "Answer", "text": "Oui, des symptômes comme des nausées, des diarrhées ou des troubles digestifs peuvent survenir." } }, { "@type": "Question", "name": "Les symptômes varient-ils selon l'âge ?", "position": 10, "acceptedAnswer": { "@type": "Answer", "text": "Oui, les symptômes peuvent être plus prononcés chez les personnes âgées en raison de l'absorption réduite." } }, { "@type": "Question", "name": "Comment prévenir la carence en vitamine B12 ?", "position": 11, "acceptedAnswer": { "@type": "Answer", "text": "Une alimentation équilibrée incluant des sources de B12 et des suppléments si nécessaire aide." } }, { "@type": "Question", "name": "Les personnes âgées doivent-elles prendre des suppléments ?", "position": 12, "acceptedAnswer": { "@type": "Answer", "text": "Oui, les personnes âgées peuvent avoir besoin de suppléments en raison d'une absorption réduite." } }, { "@type": "Question", "name": "Les végétaliens peuvent-ils éviter la carence ?", "position": 13, "acceptedAnswer": { "@type": "Answer", "text": "Ils doivent prendre des suppléments de B12 ou consommer des aliments enrichis pour éviter la carence." } }, { "@type": "Question", "name": "Les tests réguliers sont-ils recommandés ?", "position": 14, "acceptedAnswer": { "@type": "Answer", "text": "Oui, des tests réguliers sont conseillés pour les personnes à risque de carence." } }, { "@type": "Question", "name": "Les maladies digestives augmentent-elles le risque ?", "position": 15, "acceptedAnswer": { "@type": "Answer", "text": "Oui, des maladies comme la maladie de Crohn peuvent affecter l'absorption de la vitamine B12." } }, { "@type": "Question", "name": "Comment traiter une carence en vitamine B12 ?", "position": 16, "acceptedAnswer": { "@type": "Answer", "text": "Le traitement inclut des suppléments oraux ou des injections de vitamine B12 selon la gravité." } }, { "@type": "Question", "name": "Quelle est la durée du traitement ?", "position": 17, "acceptedAnswer": { "@type": "Answer", "text": "La durée dépend de la gravité, mais peut durer de quelques mois à plusieurs années." } }, { "@type": "Question", "name": "Les aliments peuvent-ils aider à corriger la carence ?", "position": 18, "acceptedAnswer": { "@type": "Answer", "text": "Oui, consommer des aliments riches en B12 comme la viande, le poisson et les produits laitiers aide." } }, { "@type": "Question", "name": "Les personnes végétariennes sont-elles à risque ?", "position": 19, "acceptedAnswer": { "@type": "Answer", "text": "Oui, elles peuvent être à risque en raison d'un apport alimentaire limité en vitamine B12." } }, { "@type": "Question", "name": "Les traitements sont-ils différents pour les enfants ?", "position": 20, "acceptedAnswer": { "@type": "Answer", "text": "Les traitements sont similaires, mais les doses peuvent varier selon l'âge et le poids." } }, { "@type": "Question", "name": "Quelles complications peuvent survenir ?", "position": 21, "acceptedAnswer": { "@type": "Answer", "text": "Des complications incluent l'anémie mégaloblastique, des troubles neurologiques et des problèmes cardiaques." } }, { "@type": "Question", "name": "La carence peut-elle entraîner des problèmes cognitifs ?", "position": 22, "acceptedAnswer": { "@type": "Answer", "text": "Oui, une carence prolongée peut causer des troubles cognitifs et des pertes de mémoire." } }, { "@type": "Question", "name": "Y a-t-il un risque accru de maladies cardiovasculaires ?", "position": 23, "acceptedAnswer": { "@type": "Answer", "text": "Oui, une carence en B12 peut augmenter le risque de maladies cardiovasculaires en élevant l'homocystéine." } }, { "@type": "Question", "name": "Les complications sont-elles réversibles ?", "position": 24, "acceptedAnswer": { "@type": "Answer", "text": "Certaines complications peuvent être réversibles avec un traitement approprié, d'autres non." } }, { "@type": "Question", "name": "La carence en B12 peut-elle affecter la grossesse ?", "position": 25, "acceptedAnswer": { "@type": "Answer", "text": "Oui, elle peut entraîner des complications pendant la grossesse, comme des malformations congénitales." } }, { "@type": "Question", "name": "Qui est le plus à risque de carence en B12 ?", "position": 26, "acceptedAnswer": { "@type": "Answer", "text": "Les personnes âgées, les végétariens, et ceux ayant des troubles d'absorption sont à risque." } }, { "@type": "Question", "name": "Les maladies auto-immunes augmentent-elles le risque ?", "position": 27, "acceptedAnswer": { "@type": "Answer", "text": "Oui, des maladies comme la gastrite atrophique peuvent affecter l'absorption de la B12." } }, { "@type": "Question", "name": "Les médicaments peuvent-ils influencer le risque ?", "position": 28, "acceptedAnswer": { "@type": "Answer", "text": "Oui, certains médicaments comme les inhibiteurs de la pompe à protons peuvent réduire l'absorption." } }, { "@type": "Question", "name": "Les troubles digestifs sont-ils un facteur de risque ?", "position": 29, "acceptedAnswer": { "@type": "Answer", "text": "Oui, des troubles comme la maladie cœliaque peuvent nuire à l'absorption de la vitamine B12." } }, { "@type": "Question", "name": "Les antécédents familiaux jouent-ils un rôle ?", "position": 30, "acceptedAnswer": { "@type": "Answer", "text": "Oui, des antécédents familiaux de carence peuvent augmenter le risque chez certains individus." } } ] } ] }

Sources (10000 au total)

Validation of a 12-color flow cytometry assay for acute myeloid leukemia minimal/measurable residual disease detection.

Acute myeloid leukemia (AML) minimal/measurable residual disease (MRD) by multicolor flow cytometry is a complex laboratory developed test (LDT), challenging for implementation. We share our experienc... We worked under the guidelines of the CLSI HL62 publication, illustrated the details of the validation process that was tailored to uniqueness of AML MRD, and tested its clinical validity in 61 patien... Under assay specificity, we shared the details of panel design, analysis, and criteria for interpretation and reporting. The assay accuracy was assessed by testing known positive and negative samples ... The validation met all criteria and obtained FDA IDE (investigational device exemption) approval. This study provides ample technical and professional details in setting up the AML MRD flow cytometry ...

Outcomes of percutaneous transluminal renal angioplasty for pediatric renovascular hypertension: a 12-year retrospective single-center experience.

Renovascular disease underlies 5-10% of all childhood hypertension. We evaluated the long-term outcomes of percutaneous transluminal renal angioplasty (PTRA) for pediatric renovascular hypertension (R... Data from 37 children with RVH who underwent PTRA of 45 lesions at our center from January 2010 to January 2022 were retrospectively evaluated. Postoperative blood pressure (BP), glomerular filtration... Mean age, weight, and height of patients at first PTRA was 11.51±4.57 (range, 3-17) years, 45.37±22.29 (range, 13.40-106.00) kg, and 1.46±0.26 (range, 0.92-1.85) m, respectively. Technical success was... In this retrospective analysis, PTRA for the treatment of pediatric RVH can achieve satisfactory results. Angioplasty was associated with improved BP control and long-term preservation of renal functi...

Efficacy and Safety of Eliapixant in Overactive Bladder: The 12-Week, Randomised, Placebo-controlled Phase 2a OVADER Study.

Effective, well-tolerated novel treatments for overactive bladder (OAB) are lacking. The P2X3 receptor antagonist eliapixant demonstrated potential to reduce OAB symptoms in preclinical studies.... To evaluate the safety, tolerability, and efficacy of eliapixant in patients with OAB with urgency urinary incontinence (UUI).... OVADER was a 12-wk, randomised, placebo-controlled, double-blind, parallel-group, multicentre, phase 2a study (NCT04545580) conducted between 2020 and 2022 in private and institutional clinical practi... Randomisation (1:1 ratio) to oral eliapixant 125 mg or placebo twice daily.... The primary endpoint was the mean change from baseline in the mean number of UUI episodes/24 h over weeks 4, 8, and 12 according to an electronic bladder diary, evaluated using a repeated-measurement ... Of 202 patients enrolled, 85 were valid for per-protocol analysis. The primary efficacy endpoint was not met. The posterior probability for eliapixant superiority over placebo was 40% (point estimate ... OVADER did not meet its clinical efficacy endpoints. Potential reasons include the nonspecific OAB symptom complex, the poorly understood pathophysiology, and the coinciding COVID-19 pandemic.... We tested whether a new drug called eliapixant would reduce symptoms of overactive bladder in comparison to placebo. We found that the drug did not work. More knowledge on how overactive bladder occur...

Efficacy of Chewable Brush Compared to Manual Brush in School Going Children of Age Group 10-12 Years.

Chewable toothbrushes were compared to traditional manual toothbrushes in terms of their ability to remove plaque and their impact on salivary pH in a sample of school-aged children.... The sample size for this research was 200 youngsters aged 10-12. Saliva was collected by spitting into a clean container, and the pH levels were measured using color-coded pH strips to determine where... Results indicated that both manual and chewable brushes significantly improved post-brushing pH ratings (... As a result, parents may offer their kids a chewable toothbrush to help them maintain good oral hygiene after lunch and on lengthy car trips, when they would not have time to wash their teeth properly...

Sadness and Anxiety Modify the Relationship Between COVID-19 and Gastrointestinal Symptoms at 6-12 Months of Follow-up.

It is unclear to what degree post-COVID-19 gastrointestinal (GI) symptoms are caused by the SARS-CoV-2 virus vs psychological factors related to the stress of the pandemic. To evaluate this, we compar... Adults presenting for SARS-CoV-2 testing from April to November 2020 were prospectively enrolled in a longitudinal cohort. Six to 12 months later, the presence and severity of current GI and mental he... 749 COVID-positive and 107 COVID-negative patients completed the survey. The prevalence of at least one GI symptom was higher in patients with COVID-19 (29 vs 18%,... After accounting for sadness and anxiety, there was no association between COVID-19 and the development of long-term GI symptoms. Post-COVID GI symptoms may be mediated bidirectionally through coexist...