Titre : Virulence

Virulence : Questions médicales fréquentes

Termes MeSH sélectionnés :

Colonoscopy
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traitements sont efficaces contre les infections virulentes ?\nLa résistance aux antibiotiques affecte-t-elle la virulence ?\nComment la virulence influence-t-elle le choix du traitement ?\nLes vaccins peuvent-ils réduire la virulence ?\nQuels sont les défis dans le traitement des infections virulentes ?", "url": "https://questionsmedicales.fr/mesh/D014774?mesh_terms=Colonoscopy&page=2#section-traitements" }, { "@type": "MedicalWebPage", "name": "Complications", "headline": "Complications sur Virulence", "description": "Quelles complications peuvent survenir avec une virulence élevée ?\nLa virulence peut-elle entraîner des complications à long terme ?\nComment gérer les complications liées à la virulence ?\nLes complications varient-elles selon le pathogène ?\nQuels facteurs aggravent les complications virulentes ?", "url": "https://questionsmedicales.fr/mesh/D014774?mesh_terms=Colonoscopy&page=2#section-complications" }, { "@type": "MedicalWebPage", "name": "Facteurs de risque", "headline": "Facteurs de risque sur Virulence", "description": "Quels sont les principaux facteurs de risque de virulence ?\nL'immunodépression augmente-t-elle la virulence ?\nComment l'environnement influence-t-il la virulence ?\nLes habitudes de vie peuvent-elles affecter la virulence ?\nLes voyages augmentent-ils le risque de virulence ?", "url": "https://questionsmedicales.fr/mesh/D014774?mesh_terms=Colonoscopy&page=2#section-facteurs de risque" } ] }, { "@type": "FAQPage", "mainEntity": [ { "@type": "Question", "name": "Comment évaluer la virulence d'un pathogène ?", "position": 1, "acceptedAnswer": { "@type": "Answer", "text": "La virulence peut être évaluée par des tests de culture, des modèles animaux et des analyses génétiques." } }, { "@type": "Question", "name": "Quels tests sont utilisés pour diagnostiquer une infection virulente ?", "position": 2, "acceptedAnswer": { "@type": "Answer", "text": "Des cultures microbiologiques, des tests PCR et des sérologies sont couramment utilisés." } }, { "@type": "Question", "name": "La virulence peut-elle être mesurée quantitativement ?", "position": 3, "acceptedAnswer": { "@type": "Answer", "text": "Oui, des indices comme le LD50 (dose létale) permettent de quantifier la virulence." } }, { "@type": "Question", "name": "Quels signes cliniques indiquent une virulence élevée ?", "position": 4, "acceptedAnswer": { "@type": "Answer", "text": "Une virulence élevée se manifeste par des symptômes graves, une progression rapide de la maladie." } }, { "@type": "Question", "name": "Comment les tests génétiques aident-ils au diagnostic ?", "position": 5, "acceptedAnswer": { "@type": "Answer", "text": "Les tests génétiques identifient des gènes de virulence spécifiques, facilitant le diagnostic." } }, { "@type": "Question", "name": "Quels sont les symptômes d'une infection virulente ?", "position": 6, "acceptedAnswer": { "@type": "Answer", "text": "Les symptômes varient, mais incluent fièvre, douleur, inflammation et fatigue intense." } }, { "@type": "Question", "name": "La virulence influence-t-elle la gravité des symptômes ?", "position": 7, "acceptedAnswer": { "@type": "Answer", "text": "Oui, une virulence élevée entraîne souvent des symptômes plus graves et des complications." } }, { "@type": "Question", "name": "Quels symptômes sont associés à des bactéries hautement virulentes ?", "position": 8, "acceptedAnswer": { "@type": "Answer", "text": "Des symptômes comme septicémie, choc toxique et défaillance multi-organes peuvent survenir." } }, { "@type": "Question", "name": "Les symptômes varient-ils selon le pathogène ?", "position": 9, "acceptedAnswer": { "@type": "Answer", "text": "Oui, chaque pathogène a un profil symptomatique distinct en fonction de sa virulence." } }, { "@type": "Question", "name": "Comment les symptômes évoluent-ils avec la virulence ?", "position": 10, "acceptedAnswer": { "@type": "Answer", "text": "Une virulence accrue peut entraîner une progression rapide et des symptômes plus sévères." } }, { "@type": "Question", "name": "Comment prévenir les infections virulentes ?", "position": 11, "acceptedAnswer": { "@type": "Answer", "text": "La prévention inclut l'hygiène, la vaccination et l'éducation sur les modes de transmission." } }, { "@type": "Question", "name": "Les mesures d'hygiène réduisent-elles la virulence ?", "position": 12, "acceptedAnswer": { "@type": "Answer", "text": "Oui, une bonne hygiène diminue la transmission et donc l'impact de la virulence." } }, { "@type": "Question", "name": "Quel rôle joue la vaccination dans la virulence ?", "position": 13, "acceptedAnswer": { "@type": "Answer", "text": "La vaccination prépare le système immunitaire, réduisant ainsi la virulence des infections." } }, { "@type": "Question", "name": "Les campagnes de sensibilisation sont-elles efficaces ?", "position": 14, "acceptedAnswer": { "@type": "Answer", "text": "Oui, elles augmentent la connaissance des risques et des mesures préventives contre la virulence." } }, { "@type": "Question", "name": "Comment le contrôle des infections aide-t-il à prévenir la virulence ?", "position": 15, "acceptedAnswer": { "@type": "Answer", "text": "Le contrôle des infections limite la propagation des agents pathogènes virulents dans la population." } }, { "@type": "Question", "name": "Quels traitements sont efficaces contre les infections virulentes ?", "position": 16, "acceptedAnswer": { "@type": "Answer", "text": "Les antibiotiques, antiviraux et traitements symptomatiques sont utilisés selon le pathogène." } }, { "@type": "Question", "name": "La résistance aux antibiotiques affecte-t-elle la virulence ?", "position": 17, "acceptedAnswer": { "@type": "Answer", "text": "Oui, la résistance peut augmenter la virulence en rendant les infections plus difficiles à traiter." } }, { "@type": "Question", "name": "Comment la virulence influence-t-elle le choix du traitement ?", "position": 18, "acceptedAnswer": { "@type": "Answer", "text": "Une virulence élevée nécessite souvent des traitements plus agressifs et une surveillance étroite." } }, { "@type": "Question", "name": "Les vaccins peuvent-ils réduire la virulence ?", "position": 19, "acceptedAnswer": { "@type": "Answer", "text": "Oui, les vaccins peuvent diminuer la virulence en préparant le système immunitaire à réagir." } }, { "@type": "Question", "name": "Quels sont les défis dans le traitement des infections virulentes ?", "position": 20, "acceptedAnswer": { "@type": "Answer", "text": "Les défis incluent la résistance aux médicaments, la virulence variable et les co-infections." } }, { "@type": "Question", "name": "Quelles complications peuvent survenir avec une virulence élevée ?", "position": 21, "acceptedAnswer": { "@type": "Answer", "text": "Des complications comme la septicémie, l'insuffisance organique et la mort peuvent survenir." } }, { "@type": "Question", "name": "La virulence peut-elle entraîner des complications à long terme ?", "position": 22, "acceptedAnswer": { "@type": "Answer", "text": "Oui, certaines infections virulentes peuvent causer des séquelles chroniques et des maladies persistantes." } }, { "@type": "Question", "name": "Comment gérer les complications liées à la virulence ?", "position": 23, "acceptedAnswer": { "@type": "Answer", "text": "La gestion inclut un traitement rapide, un suivi médical et des soins de soutien appropriés." } }, { "@type": "Question", "name": "Les complications varient-elles selon le pathogène ?", "position": 24, "acceptedAnswer": { "@type": "Answer", "text": "Oui, chaque pathogène peut entraîner des complications spécifiques en fonction de sa virulence." } }, { "@type": "Question", "name": "Quels facteurs aggravent les complications virulentes ?", "position": 25, "acceptedAnswer": { "@type": "Answer", "text": "L'âge, les comorbidités et l'immunodépression peuvent aggraver les complications virulentes." } }, { "@type": "Question", "name": "Quels sont les principaux facteurs de risque de virulence ?", "position": 26, "acceptedAnswer": { "@type": "Answer", "text": "Les facteurs incluent l'âge, l'état immunitaire, les maladies chroniques et l'exposition environnementale." } }, { "@type": "Question", "name": "L'immunodépression augmente-t-elle la virulence ?", "position": 27, "acceptedAnswer": { "@type": "Answer", "text": "Oui, les personnes immunodéprimées sont plus susceptibles de développer des infections virulentes." } }, { "@type": "Question", "name": "Comment l'environnement influence-t-il la virulence ?", "position": 28, "acceptedAnswer": { "@type": "Answer", "text": "Des conditions environnementales comme l'hygiène et la densité de population affectent la virulence." } }, { "@type": "Question", "name": "Les habitudes de vie peuvent-elles affecter la virulence ?", "position": 29, "acceptedAnswer": { "@type": "Answer", "text": "Oui, des habitudes comme le tabagisme et l'alcoolisme peuvent augmenter le risque d'infections virulentes." } }, { "@type": "Question", "name": "Les voyages augmentent-ils le risque de virulence ?", "position": 30, "acceptedAnswer": { "@type": "Answer", "text": "Oui, les voyages peuvent exposer à des agents pathogènes virulents non présents localement." } } ] } ] }

Sources (1489 au total)

Polyp characteristics at screening colonoscopy and post-colonoscopy colorectal cancer mortality: a retrospective cohort study.

Polyp size and high-grade dysplasia in polyps at screening colonoscopy are considered risk factors for post-colonoscopy colorectal cancer (PCCRC) development and death, which might be averted by surve... This was a retrospective study including individuals of the Austrian Quality Certificate for Screening Colonoscopy who underwent a colonoscopy between January 2007 and December 2020. We investigated t... A total of 316,001 individuals were included. After a median follow-up time of 5.27 years (95% confidence interval [CI], 5.25-5.29), a significant association of polyps 10 to 20 mm (hazard ratio, 4.00... Polyp size ≥10 mm and high-grade dysplasia are associated with PCCRC mortality in screening patients. The data suggest that these patients might benefit most from surveillance colonoscopy....

Colorectal Cancer After Screening Colonoscopy: 10-Year Incidence by Site and Detection Rate at First Repeat Colonoscopy.

We aimed to describe cumulative colorectal cancer (CRC) incidence after screening colonoscopy stratified by tumor location, age, and sex as well as CRC detection rate at first repeat colonoscopy.... Using the German Pharmacoepidemiological Research Database, we included persons with screening colonoscopy and assessed cumulative CRC incidence after baseline screening colonoscopy with snare polypec... Overall, 1,095,381 persons were included. The 10-year cumulative CRC incidence was 1.5% in cohort 1 and 0.6% in cohort 2. The proportion of proximal CRC increased with age: In women of cohort 1, 47% o... Among persons followed up after screening colonoscopy, we observed a steadily increasing predominance of proximal CRC, and this shift showed distinct patterns by age and sex. Because our study suggest...

Safe, efficient, and effective screening colonoscopy.

Colorectal cancer continues to be one of the most common causes of cancer-related death. Widespread dissemination of screening colonoscopy in the United States has led to a significant reduction in th... Colon capsule endoscopy is an emerging noninvasive method to capture images of colonic mucosa for select patients with appreciable sensitivity for polyp detection. Recent literature supports the use o... Clinicians should be aware of relevant data and literature that continue to improve the quality and safety of screening colonoscopy and incorporate these findings into their clinical practice....

Colonoscopies in Australia - how much does the National Bowel Cancer Screening Program contribute to colonoscopy use?

Objectives and importance of study: Colorectal cancer (CRC) is Australia's fourth most commonly diagnosed cancer. CRC screening is an effective intervention to reduce this burden. The National Bowel C... Colonoscopy use in Australia was compiled using Medicare Benefits Schedule (MBS) claims for colonoscopies from 2001 to 2019. From these data, projections were made from 2020 to 2030. Policy1-Bowel, a ... MBS-funded colonoscopy use increased from 284 676 in 2001 to 663 213 in 2019. Annual use is projected to be more than 780 000 by 2030. Of these, 10-14% are projected to be generated by the NBCSP. Per-... The NBCSP accounts for a modest fraction of colonoscopy use in Australia, and a better understanding of colonoscopy use not associated with the NBCSP is needed. Promoting adherence to guideline-recomm...

Interval post-colonoscopy colorectal cancer following a negative colonoscopy in a fecal immunochemical test-based screening program.

In the Dutch colorectal (CRC) screening program, fecal immunochemical test (FIT)-positive individuals are referred for colonoscopy. If no relevant findings are detected at colonoscopy, individuals are... In this cross-sectional cohort study, data were extracted from the Dutch national screening information system. Participants with a positive FIT followed by a negative colonoscopy between 2014 and 201... 35 052 FIT-positive participants had a negative colonoscopy and 24 iPCCRCs were diagnosed, resulting in an iPCCRC risk of 6.85 (95 %CI 4.60-10.19) per 10 000 individuals after a median follow-up of 1.... Risk of iPCCRC within a FIT-based CRC screening program was low during the first years after colonos-copy but, after 2.5 years, was the same as the risk in FIT-negative individuals at 2 years, when th...

Computer-assisted detection versus conventional colonoscopy for proximal colonic lesions: a multicenter, randomized, tandem-colonoscopy study.

Computer-assisted detection (CADe) is a promising technologic advance that enhances adenoma detection during colonoscopy. However, the role of CADe in reducing missed colonic lesions is uncertain. The... This was a prospective, multicenter, randomized, tandem-colonoscopy study conducted in 3 Asian centers. Patients were randomized to receive CADe or conventional white-light colonoscopy during the firs... Of 223 patients (48.6% men; median age, 63 years) enrolled, 7 patients did not have tandem examination, leaving 108 patients in each group. There was no difference in the miss rate for proximal adenom... This multicenter trial from Asia confirmed that CADe can further enhance proximal adenoma and polyp detection but may not be able to reduce the number of missed proximal colonic lesions. (Clinical tri...

Outcomes of patients with delayed surveillance colonoscopy.

Surveillance colonoscopy has been shown to be an effective tool for prevention of colorectal cancer (CRC) in high-risk populations, if adhered to.... To discover the sequelae of late surveillance in a cohort of patient's overdue for colonoscopy.... We conducted a retrospective cohort study on all patients from the Bay of Plenty District Health Board region, New Zealand, placed on the colonoscopy surveillance waitlist from 2006 onwards who had th... A total of 786 patients was recorded as overdue for surveillance colonoscopy and 386 were completed early or on time. The median time overdue was 22 months. Three (0.4%) cases of CRC were found in ove... While overdue surveillance is not predictive of increased CRC, it is associated with an increase in expected number of AA, particularly in patients having surveillance for previous high-risk polypecto...