Titre : Vitamin K epoxide reductases

Vitamin K epoxide reductases : Questions médicales fréquentes

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diagnostiquer une carence en vitamine K ?\nQuels tests sont utilisés pour évaluer l'activité des réductases ?\nQuels symptômes indiquent un dysfonctionnement des réductases ?\nComment les médicaments affectent-ils le diagnostic ?\nQuel rôle joue l'alimentation dans le diagnostic ?", "url": "https://questionsmedicales.fr/mesh/D064417?page=3#section-diagnostic" }, { "@type": "MedicalWebPage", "name": "Symptômes", "headline": "Symptômes sur Vitamin K epoxide reductases", "description": "Quels sont les symptômes d'une carence en vitamine K ?\nComment se manifestent les troubles de coagulation ?\nLes douleurs articulaires sont-elles liées aux réductases ?\nQuels signes cutanés peuvent apparaître ?\nLes saignements menstruels peuvent-ils être affectés ?", "url": "https://questionsmedicales.fr/mesh/D064417?page=3#section-symptômes" }, { "@type": "MedicalWebPage", "name": "Prévention", "headline": "Prévention sur Vitamin K epoxide reductases", "description": "Comment prévenir une carence en vitamine K ?\nLes suppléments sont-ils recommandés ?\nQuels aliments sont riches en vitamine K ?\nLes personnes âgées ont-elles besoin de plus de vitamine K ?\nComment éviter les interactions médicamenteuses ?", "url": "https://questionsmedicales.fr/mesh/D064417?page=3#section-prévention" }, { "@type": "MedicalWebPage", "name": "Traitements", "headline": "Traitements sur Vitamin K epoxide reductases", "description": "Comment traiter une carence en vitamine K ?\nQuels médicaments peuvent interférer avec les réductases ?\nY a-t-il des traitements alternatifs ?\nComment surveiller l'efficacité du traitement ?\nLes transfusions sanguines sont-elles nécessaires ?", "url": "https://questionsmedicales.fr/mesh/D064417?page=3#section-traitements" }, { "@type": "MedicalWebPage", "name": "Complications", "headline": "Complications sur Vitamin K epoxide reductases", "description": "Quelles complications peuvent survenir en cas de carence ?\nLes complications sont-elles réversibles ?\nQuels risques sont associés à un surdosage de vitamine K ?\nLes complications affectent-elles la grossesse ?\nComment les maladies hépatiques influencent-elles les complications ?", "url": "https://questionsmedicales.fr/mesh/D064417?page=3#section-complications" }, { "@type": "MedicalWebPage", "name": "Facteurs de risque", "headline": "Facteurs de risque sur Vitamin K epoxide reductases", "description": "Quels sont les facteurs de risque de carence en vitamine K ?\nLes nouveau-nés sont-ils à risque ?\nLes personnes sous anticoagulants sont-elles à risque ?\nLes maladies intestinales augmentent-elles le risque ?\nLes personnes âgées sont-elles plus vulnérables ?", "url": "https://questionsmedicales.fr/mesh/D064417?page=3#section-facteurs de risque" } ] }, { "@type": "FAQPage", "mainEntity": [ { "@type": "Question", "name": "Comment diagnostiquer une carence en vitamine K ?", "position": 1, "acceptedAnswer": { "@type": "Answer", "text": "Un dosage des niveaux de prothrombine et de vitamine K dans le sang peut indiquer une carence." } }, { "@type": "Question", "name": "Quels tests sont utilisés pour évaluer l'activité des réductases ?", "position": 2, "acceptedAnswer": { "@type": "Answer", "text": "Des tests de coagulation comme le temps de prothrombine (TP) sont utilisés pour évaluer l'activité." } }, { "@type": "Question", "name": "Quels symptômes indiquent un dysfonctionnement des réductases ?", "position": 3, "acceptedAnswer": { "@type": "Answer", "text": "Des saignements excessifs ou des ecchymoses fréquentes peuvent indiquer un dysfonctionnement." } }, { "@type": "Question", "name": "Comment les médicaments affectent-ils le diagnostic ?", "position": 4, "acceptedAnswer": { "@type": "Answer", "text": "Certains anticoagulants, comme la warfarine, peuvent fausser les résultats des tests de coagulation." } }, { "@type": "Question", "name": "Quel rôle joue l'alimentation dans le diagnostic ?", "position": 5, "acceptedAnswer": { "@type": "Answer", "text": "Une alimentation pauvre en vitamine K peut contribuer à des résultats anormaux lors des tests." } }, { "@type": "Question", "name": "Quels sont les symptômes d'une carence en vitamine K ?", "position": 6, "acceptedAnswer": { "@type": "Answer", "text": "Les symptômes incluent des saignements, des ecchymoses, et des saignements des gencives." } }, { "@type": "Question", "name": "Comment se manifestent les troubles de coagulation ?", "position": 7, "acceptedAnswer": { "@type": "Answer", "text": "Ils se manifestent par des saignements prolongés après une blessure ou des hémorragies internes." } }, { "@type": "Question", "name": "Les douleurs articulaires sont-elles liées aux réductases ?", "position": 8, "acceptedAnswer": { "@type": "Answer", "text": "Des douleurs articulaires peuvent survenir en raison de saignements internes dans les articulations." } }, { "@type": "Question", "name": "Quels signes cutanés peuvent apparaître ?", "position": 9, "acceptedAnswer": { "@type": "Answer", "text": "Des ecchymoses et des éruptions cutanées peuvent apparaître en cas de carence en vitamine K." } }, { "@type": "Question", "name": "Les saignements menstruels peuvent-ils être affectés ?", "position": 10, "acceptedAnswer": { "@type": "Answer", "text": "Oui, des saignements menstruels plus abondants peuvent être un signe de carence en vitamine K." } }, { "@type": "Question", "name": "Comment prévenir une carence en vitamine K ?", "position": 11, "acceptedAnswer": { "@type": "Answer", "text": "Une alimentation équilibrée riche en légumes à feuilles vertes aide à prévenir la carence." } }, { "@type": "Question", "name": "Les suppléments sont-ils recommandés ?", "position": 12, "acceptedAnswer": { "@type": "Answer", "text": "Des suppléments peuvent être recommandés pour les personnes à risque, comme les nouveau-nés." } }, { "@type": "Question", "name": "Quels aliments sont riches en vitamine K ?", "position": 13, "acceptedAnswer": { "@type": "Answer", "text": "Les légumes à feuilles vertes, le brocoli et les huiles végétales sont riches en vitamine K." } }, { "@type": "Question", "name": "Les personnes âgées ont-elles besoin de plus de vitamine K ?", "position": 14, "acceptedAnswer": { "@type": "Answer", "text": "Oui, les personnes âgées peuvent nécessiter un apport accru en raison de l'absorption réduite." } }, { "@type": "Question", "name": "Comment éviter les interactions médicamenteuses ?", "position": 15, "acceptedAnswer": { "@type": "Answer", "text": "Il est important de consulter un médecin avant de prendre des suppléments ou des médicaments." } }, { "@type": "Question", "name": "Comment traiter une carence en vitamine K ?", "position": 16, "acceptedAnswer": { "@type": "Answer", "text": "Le traitement inclut des suppléments de vitamine K par voie orale ou intraveineuse." } }, { "@type": "Question", "name": "Quels médicaments peuvent interférer avec les réductases ?", "position": 17, "acceptedAnswer": { "@type": "Answer", "text": "Les anticoagulants comme la warfarine peuvent inhiber l'activité des réductases." } }, { "@type": "Question", "name": "Y a-t-il des traitements alternatifs ?", "position": 18, "acceptedAnswer": { "@type": "Answer", "text": "Des modifications alimentaires pour augmenter l'apport en vitamine K peuvent être bénéfiques." } }, { "@type": "Question", "name": "Comment surveiller l'efficacité du traitement ?", "position": 19, "acceptedAnswer": { "@type": "Answer", "text": "Des tests de coagulation réguliers permettent de surveiller l'efficacité du traitement." } }, { "@type": "Question", "name": "Les transfusions sanguines sont-elles nécessaires ?", "position": 20, "acceptedAnswer": { "@type": "Answer", "text": "Dans les cas graves, des transfusions de plasma peuvent être nécessaires pour traiter les saignements." } }, { "@type": "Question", "name": "Quelles complications peuvent survenir en cas de carence ?", "position": 21, "acceptedAnswer": { "@type": "Answer", "text": "Des complications incluent des hémorragies graves et des troubles de la coagulation." } }, { "@type": "Question", "name": "Les complications sont-elles réversibles ?", "position": 22, "acceptedAnswer": { "@type": "Answer", "text": "Oui, avec un traitement approprié, la plupart des complications peuvent être réversibles." } }, { "@type": "Question", "name": "Quels risques sont associés à un surdosage de vitamine K ?", "position": 23, "acceptedAnswer": { "@type": "Answer", "text": "Un surdosage peut entraîner des problèmes de coagulation et des réactions allergiques." } }, { "@type": "Question", "name": "Les complications affectent-elles la grossesse ?", "position": 24, "acceptedAnswer": { "@type": "Answer", "text": "Oui, une carence en vitamine K peut augmenter le risque de complications pendant la grossesse." } }, { "@type": "Question", "name": "Comment les maladies hépatiques influencent-elles les complications ?", "position": 25, "acceptedAnswer": { "@type": "Answer", "text": "Les maladies hépatiques peuvent altérer le métabolisme de la vitamine K, augmentant les risques de complications." } }, { "@type": "Question", "name": "Quels sont les facteurs de risque de carence en vitamine K ?", "position": 26, "acceptedAnswer": { "@type": "Answer", "text": "Les facteurs incluent une alimentation déséquilibrée, des troubles d'absorption et certains médicaments." } }, { "@type": "Question", "name": "Les nouveau-nés sont-ils à risque ?", "position": 27, "acceptedAnswer": { "@type": "Answer", "text": "Oui, les nouveau-nés ont un risque accru de carence en raison de réserves limitées de vitamine K." } }, { "@type": "Question", "name": "Les personnes sous anticoagulants sont-elles à risque ?", "position": 28, "acceptedAnswer": { "@type": "Answer", "text": "Oui, les personnes sous anticoagulants comme la warfarine doivent surveiller leur apport en vitamine K." } }, { "@type": "Question", "name": "Les maladies intestinales augmentent-elles le risque ?", "position": 29, "acceptedAnswer": { "@type": "Answer", "text": "Oui, les maladies comme la maladie cœliaque peuvent affecter l'absorption de la vitamine K." } }, { "@type": "Question", "name": "Les personnes âgées sont-elles plus vulnérables ?", "position": 30, "acceptedAnswer": { "@type": "Answer", "text": "Oui, l'absorption de la vitamine K peut diminuer avec l'âge, augmentant le risque de carence." } } ] } ] }

Sources (10000 au total)

Non-vitamin K oral antagonist (NOAC) compared to vitamin K antagonist (VKA) in left ventricular thrombus.

Thromboembolic events are serious left ventricular thrombus (LVT) complications. Despite the limitations of vitamin K antagonist (VKA) drugs, it continues to be the recommended oral anticoagulation fo... In this study, we aim to compare the outcomes (stroke and bleeding) of warfarin versus NOAC therapy in patients with LVT.... This retrospective cohort study compares NOAC and VKA therapy in LVT patients. We enrolled 201 patients with an echocardiography-confirmed LVT from January 2018 to December 2022. Patients who received... The median follow-up time was 17 months (25... In patients with LVT, NOAC was as effective as VKA in stroke prevention without increasing the risk of major bleeding....

Serum 25(OH)D and vitamin K

To investigate whether patients with severe motor and intellectual disability (SMID) have nutritional vitamin D and K insufficiencies and clarify the required vitamin supplementation.... This prospective observational study enrolled Japanese adults with SMID receiving institutionalized care who underwent blood sampling between February 2020 and February 2022 during annual medical chec... The study included 124 patients with SMID (56 men and 68 women; mean age: 53.0 years) and 20 control participants. Serum 25(OH)D levels were significantly higher in the SMID group than in the control ... The SMID group had higher ucOC levels than the control group, possibly owing to daily vitamin K and D deficiencies. Vitamin D supplementation is recommended to decrease ucOC levels....

Vitamin K antagonist-associated microscopic hematuria.

Vitamin K antagonists (VKA) are the most widely used anticoagulants for the prevention of thrombotic events. Several renal adverse effects have been associated with the use of VKA. The main aim of our... We performed a cross-sectional study of patients treated with VKA that attended the outpatient clinic for routine INR control. A simple urinalysis was performed on the day of the INR control and the p... A total of 337 patients were included with median INR levels of 2.6 (IQR 2.1-3.3). 11.9% of the patients presented microscopic hematuria (≥14 RBCs/µl). There was a significant correlation between INR ... INR overdose was significantly associated with the presence of microscopic hematuria. RAS blockade is an independent protective factor for the presence of microscopic hematuria in anticoagulated patie...

Comparing clinical outcomes of Vitamin K antagonists versus Non-Vitamin K antagonists in anticoagulant therapy for mesenteric venous thrombosis.

Non-vitamin K antagonist oral anticoagulants have shown similar efficacy and lower bleeding rates than Vitamin K antagonists for venous thromboembolism. However, this has not been proven in mesenteric... Between Jan 2014 and July 2022, mesenteric vein thrombosis was diagnosed on computed tomography in 225 patients in a tertiary hospital. Among them, a total of 44 patients who underwent long-term antic... The median age of the patients was 56 years (46-68) and 52% were men. The most common risk factors were unprovoked intra-abdominal infections (30%). The median duration of anticoagulation therapy was ... Despite the short follow-up duration in the non-vitamin K antagonist oral anticoagulants group, there was no clinically significant difference in the thrombus resolution rate or bleeding complications...