Titre : Chromatographie d'échange d'ions

Chromatographie d'échange d'ions : Questions médicales fréquentes

Termes MeSH sélectionnés :

Lymph Node Excision
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détecter des contaminants avec cette méthode ?", "url": "https://questionsmedicales.fr/mesh/D002852?mesh_terms=Lymph+Node+Excision&page=2#section-diagnostic" }, { "@type": "MedicalWebPage", "name": "Symptômes", "headline": "Symptômes sur Chromatographie d'échange d'ions", "description": "Quels symptômes peuvent indiquer un déséquilibre ionique ?\nComment les déséquilibres ioniques affectent-ils le corps ?\nLes symptômes sont-ils toujours visibles ?\nQuels tests peuvent révéler des symptômes ?\nLes symptômes varient-ils selon l'âge ?", "url": "https://questionsmedicales.fr/mesh/D002852?mesh_terms=Lymph+Node+Excision&page=2#section-symptômes" }, { "@type": "MedicalWebPage", "name": "Prévention", "headline": "Prévention sur Chromatographie d'échange d'ions", "description": "Comment prévenir les déséquilibres ioniques ?\nLes personnes âgées doivent-elles être plus vigilantes ?\nQuels aliments sont riches en électrolytes ?\nL'exercice physique influence-t-il les niveaux d'ions ?\nDes suppléments sont-ils nécessaires pour tous ?", "url": "https://questionsmedicales.fr/mesh/D002852?mesh_terms=Lymph+Node+Excision&page=2#section-prévention" }, { "@type": "MedicalWebPage", "name": "Traitements", "headline": "Traitements sur Chromatographie d'échange d'ions", "description": "Quels traitements sont utilisés pour corriger les déséquilibres ?\nLa chromatographie d'échange d'ions aide-t-elle au traitement ?\nQuels médicaments peuvent influencer les niveaux d'ions ?\nComment surveiller l'efficacité du traitement ?\nLes traitements sont-ils personnalisés ?", "url": "https://questionsmedicales.fr/mesh/D002852?mesh_terms=Lymph+Node+Excision&page=2#section-traitements" }, { "@type": "MedicalWebPage", "name": "Complications", "headline": "Complications sur Chromatographie d'échange d'ions", "description": "Quelles complications peuvent survenir avec un déséquilibre ionique ?\nLes déséquilibres peuvent-ils être mortels ?\nComment les complications sont-elles gérées ?\nLes complications sont-elles réversibles ?\nQuels signes indiquent une complication ?", "url": "https://questionsmedicales.fr/mesh/D002852?mesh_terms=Lymph+Node+Excision&page=2#section-complications" }, { "@type": "MedicalWebPage", "name": "Facteurs de risque", "headline": "Facteurs de risque sur Chromatographie d'échange d'ions", "description": "Quels facteurs augmentent le risque de déséquilibre ionique ?\nL'âge est-il un facteur de risque ?\nLes sportifs sont-ils plus exposés ?\nLes médicaments influencent-ils le risque ?\nLe stress a-t-il un impact sur les niveaux d'ions ?", "url": "https://questionsmedicales.fr/mesh/D002852?mesh_terms=Lymph+Node+Excision&page=2#section-facteurs de risque" } ] }, { "@type": "FAQPage", "mainEntity": [ { "@type": "Question", "name": "Comment la chromatographie d'échange d'ions est-elle utilisée en diagnostic ?", "position": 1, "acceptedAnswer": { "@type": "Answer", "text": "Elle permet d'analyser la composition ionique des échantillons biologiques." } }, { "@type": "Question", "name": "Quels types d'échantillons peuvent être analysés ?", "position": 2, "acceptedAnswer": { "@type": "Answer", "text": "Des échantillons de sang, d'urine ou de tissus peuvent être analysés." } }, { "@type": "Question", "name": "Quels ions sont souvent ciblés dans les analyses ?", "position": 3, "acceptedAnswer": { "@type": "Answer", "text": "Les cations comme le sodium et le potassium, et les anions comme le chlorure." } }, { "@type": "Question", "name": "Quelle est l'importance de la pureté des échantillons ?", "position": 4, "acceptedAnswer": { "@type": "Answer", "text": "Une pureté élevée est essentielle pour des résultats d'analyse fiables." } }, { "@type": "Question", "name": "Peut-on détecter des contaminants avec cette méthode ?", "position": 5, "acceptedAnswer": { "@type": "Answer", "text": "Oui, elle est efficace pour identifier des contaminants ioniques dans les échantillons." } }, { "@type": "Question", "name": "Quels symptômes peuvent indiquer un déséquilibre ionique ?", "position": 6, "acceptedAnswer": { "@type": "Answer", "text": "Des symptômes comme la fatigue, des crampes musculaires ou des palpitations." } }, { "@type": "Question", "name": "Comment les déséquilibres ioniques affectent-ils le corps ?", "position": 7, "acceptedAnswer": { "@type": "Answer", "text": "Ils peuvent perturber les fonctions cellulaires et provoquer des troubles métaboliques." } }, { "@type": "Question", "name": "Les symptômes sont-ils toujours visibles ?", "position": 8, "acceptedAnswer": { "@type": "Answer", "text": "Non, certains déséquilibres peuvent être asymptomatiques au début." } }, { "@type": "Question", "name": "Quels tests peuvent révéler des symptômes ?", "position": 9, "acceptedAnswer": { "@type": "Answer", "text": "Des tests sanguins et urinaires peuvent aider à détecter des déséquilibres." } }, { "@type": "Question", "name": "Les symptômes varient-ils selon l'âge ?", "position": 10, "acceptedAnswer": { "@type": "Answer", "text": "Oui, les symptômes peuvent varier en fonction de l'âge et de l'état de santé." } }, { "@type": "Question", "name": "Comment prévenir les déséquilibres ioniques ?", "position": 11, "acceptedAnswer": { "@type": "Answer", "text": "Maintenir une alimentation équilibrée et une hydratation adéquate aide à prévenir." } }, { "@type": "Question", "name": "Les personnes âgées doivent-elles être plus vigilantes ?", "position": 12, "acceptedAnswer": { "@type": "Answer", "text": "Oui, elles sont plus susceptibles de développer des déséquilibres ioniques." } }, { "@type": "Question", "name": "Quels aliments sont riches en électrolytes ?", "position": 13, "acceptedAnswer": { "@type": "Answer", "text": "Les bananes, les avocats et les produits laitiers sont de bonnes sources." } }, { "@type": "Question", "name": "L'exercice physique influence-t-il les niveaux d'ions ?", "position": 14, "acceptedAnswer": { "@type": "Answer", "text": "Oui, l'exercice peut entraîner une perte d'électrolytes par la transpiration." } }, { "@type": "Question", "name": "Des suppléments sont-ils nécessaires pour tous ?", "position": 15, "acceptedAnswer": { "@type": "Answer", "text": "Non, les suppléments ne sont nécessaires que si les niveaux sont insuffisants." } }, { "@type": "Question", "name": "Quels traitements sont utilisés pour corriger les déséquilibres ?", "position": 16, "acceptedAnswer": { "@type": "Answer", "text": "Des suppléments d'électrolytes ou des modifications diététiques peuvent être prescrits." } }, { "@type": "Question", "name": "La chromatographie d'échange d'ions aide-t-elle au traitement ?", "position": 17, "acceptedAnswer": { "@type": "Answer", "text": "Oui, elle est utilisée pour purifier des solutions contenant des ions thérapeutiques." } }, { "@type": "Question", "name": "Quels médicaments peuvent influencer les niveaux d'ions ?", "position": 18, "acceptedAnswer": { "@type": "Answer", "text": "Des diurétiques et des médicaments pour le cœur peuvent affecter les niveaux d'ions." } }, { "@type": "Question", "name": "Comment surveiller l'efficacité du traitement ?", "position": 19, "acceptedAnswer": { "@type": "Answer", "text": "Des tests réguliers des niveaux d'ions dans le sang sont nécessaires." } }, { "@type": "Question", "name": "Les traitements sont-ils personnalisés ?", "position": 20, "acceptedAnswer": { "@type": "Answer", "text": "Oui, les traitements sont souvent adaptés aux besoins individuels du patient." } }, { "@type": "Question", "name": "Quelles complications peuvent survenir avec un déséquilibre ionique ?", "position": 21, "acceptedAnswer": { "@type": "Answer", "text": "Des complications comme des arythmies cardiaques ou des troubles neurologiques." } }, { "@type": "Question", "name": "Les déséquilibres peuvent-ils être mortels ?", "position": 22, "acceptedAnswer": { "@type": "Answer", "text": "Oui, des déséquilibres sévères peuvent entraîner des situations potentiellement mortelles." } }, { "@type": "Question", "name": "Comment les complications sont-elles gérées ?", "position": 23, "acceptedAnswer": { "@type": "Answer", "text": "Elles nécessitent souvent une intervention médicale urgente et des traitements spécifiques." } }, { "@type": "Question", "name": "Les complications sont-elles réversibles ?", "position": 24, "acceptedAnswer": { "@type": "Answer", "text": "Oui, si elles sont traitées rapidement, de nombreuses complications peuvent être réversibles." } }, { "@type": "Question", "name": "Quels signes indiquent une complication ?", "position": 25, "acceptedAnswer": { "@type": "Answer", "text": "Des signes comme des douleurs thoraciques, des vertiges ou des convulsions." } }, { "@type": "Question", "name": "Quels facteurs augmentent le risque de déséquilibre ionique ?", "position": 26, "acceptedAnswer": { "@type": "Answer", "text": "Des maladies chroniques, des régimes alimentaires déséquilibrés et la déshydratation." } }, { "@type": "Question", "name": "L'âge est-il un facteur de risque ?", "position": 27, "acceptedAnswer": { "@type": "Answer", "text": "Oui, les personnes âgées sont plus à risque de déséquilibres ioniques." } }, { "@type": "Question", "name": "Les sportifs sont-ils plus exposés ?", "position": 28, "acceptedAnswer": { "@type": "Answer", "text": "Oui, l'exercice intense peut entraîner des pertes d'électrolytes importantes." } }, { "@type": "Question", "name": "Les médicaments influencent-ils le risque ?", "position": 29, "acceptedAnswer": { "@type": "Answer", "text": "Oui, certains médicaments peuvent affecter l'équilibre des électrolytes." } }, { "@type": "Question", "name": "Le stress a-t-il un impact sur les niveaux d'ions ?", "position": 30, "acceptedAnswer": { "@type": "Answer", "text": "Oui, le stress peut affecter l'hydratation et l'équilibre électrolytique." } } ] } ] }

Sources (7916 au total)

Radiation, Lymph Node Dissection, or Both: Management of Lymph Node Micrometastases from Merkel Cell Carcinoma.

Regional lymph node micrometastases from Merkel cell carcinoma (MCC) can be treated with completion lymph node dissection (CLND) and/or radiation therapy (RT). It is unclear how these options compare ... This retrospective cohort study used data from years 2012-2019 of the National Cancer Database. Patients with MCC and clinically negative, but pathologically positive, lymph node metastases who receiv... A total of 962 patients were included [median (interquartile range) age, 74 (67-80) years, 662 (68.8%) male patients, 926 (96.3%) white patients]. The majority (63%, n = 606) had a CLND only, while 18... The usage of RT for nodal micrometastasis in MCC is increasing as compared with CLND. This strategy appears to be safe, with no significant difference in survival outcomes....

Clinical outcomes of neoadjuvant therapy followed by selective inguinal lymph node dissection and total mesorectal excision for metastasized low rectal cancer.

Rectal or anal canal adenocarcinoma with inguinal lymph node metastasis (ILNM) is rare and is associated with poor prognostic outcomes. This study aimed to elucidate the clinical significance of neoad... This study enrolled 15 consecutive patients who underwent neoadjuvant therapy and curative resection for rectal or anal canal adenocarcinoma with clinically suspected ILNM between 2005 and 2019 at a s... Out of the15 patients, 11 were treated with neoadjuvant chemoradiation, three with chemotherapy, and one with chemoradiation followed by chemotherapy. Fluorodeoxyglucose (FDG)-positron emission tomogr... In patients with rectal or anal canal adenocarcinoma associated with clinical ILNM, radical resection with neoadjuvant therapy provides a good long-term survival....

Robotic versus laparoscopic total mesorectal excision with lateral lymph node dissection for advanced rectal cancer: A systematic review and meta-analysis.

Lateral pelvic node dissection (LPND) poses significant technical challenges. Despite the advent of robotic surgery, determining the optimal minimally invasive approach remains a topic of debate. This... This meta-analysis was conducted according to the Preferred Reporting Items for Systematic Review and Meta-analysis (PRISMA) 2020 and AMSTAR 2 (Assessing the Methodological Quality of Systematic Revie... Six eligible studies involving 652 patients (316 and 336 in the R-LPND and L-LPND groups, respectively) were retrieved. The robotic approach demonstrated favourable outcomes compared with the laparosc... In summary, the robotic approach is a safe and feasible alternative for Total Mesorectal Excision (TME) with LPND in advanced rectal cancer. Notably, it is associated with lower morbidity, particularl...

Inguinal Lymph-Node Ratio (LNR) as a predictor of Pelvic Lymph-Node Metastasis in squamous cell carcinoma of penis.

To determine the predictors of pelvic lymph-node metastasis in cases of squamous cell carcinoma (SCC) of penis.... Data was retrospectively collected from 267 cases of SCC penis that presented at our institute between 2009 and 2019. Univariate and multivariate logistic regression models were used to identify indep... Pelvic Lymph-Node Metastasis (PLNM) was pathologically detected in 56 groins (29.2%). A cut-off of 0.25 was calculated for LNR based on ROC. LNR >0.25 (p = 0.003), ENE (p = 0.037), and LVI (p = 0.043)... LNR >0.25, LVI and, ENE are independent predictors of PLNM. The discriminative ability of LNR was better than PLN. PLND could be avoided if no risk factors are present....

Factors Associated With Lymph Node Yield and Effects of Lymph Node Density on Survival of Patients With Pulmonary Sarcomatoid Carcinoma.

The objective of this study was to identify factors associated with lymph node yield (LNY) during surgeries for pulmonary sarcomatoid carcinoma (PSC) and to determine effects of lymph node density (LN... The SEER Research Plus database was searched for data on patients with PSC from 1988 to 2018. Poisson regression was used of all patients with PSC to identify relevant factors associated with LNY. Uni... There were 545 eligible patients in the study sample, 175 of which were LN-positive. These patients had significantly lower 5-year OS than those with no positive LNs ( P <0.001). Poisson regression an... Patients with PSC with high LND experienced worse outcomes than those with low LND. Further risk stratification of patients with PSC may help to improve survival benefits based on prognostic indicator...

Impact of lymph node ratio and number of lymph node metastases on survival and recurrence in laryngeal squamous cell carcinoma.

The aim of this study is to assess the impact of lymph node ratio (LNR) and number of positive lymph nodes (NPLN) on mortality and recurrence rates in patients with laryngeal squamous cell carcinoma.... We conducted a retrospective multicenter international study involving 24 Otorhinolaryngology-Head and Neck Surgery divisions. Disease-specific survival (DSS) and disease-free survival (DFS) were eval... 2507 patients met the inclusion criteria. DSS and DFS were significantly different in the groups of patients stratified according to LNR and NPLN. The 5-year DSS and DFS based on LNR and NPLN demonstr... Our data demonstrate the potential prognostic value of NPLN and LNR in laryngeal squamous cell carcinoma....

Metastatic lymph node ratio as an important prognostic factor in advanced gallbladder carcinoma with at least 6 lymph nodes retrieved.

The metastatic lymph node (LN) ratio (LNR) has shown to be an important prognostic factor in various gastrointestinal malignancies. Nevertheless, the prognostic significance of LNR in gallbladder carc... From January 2007 to January 2018, 144 advanced GBC patients (T2-4 stages) who underwent curative surgery with at least 6 LNs retrieved were enrolled. Receiver operating characteristic (ROC) curve was... The optimal cut-off point for LNR was 0.28 according to the ROC curve. LNR>0.28 was associated with higher rate of D2 LN dissection (P=0.004) and higher tumor stages (P<0.001). Extent of liver resecti... LNR is correlated to advanced GBC prognosis and is a potential prognostic factor for advanced GBC with at least 6 LNs retrieved....

RATIO OF METASTATIC LYMPH NODES VS. RESECTED LYMPH NODES (N-RATIO) HAS PROGNOSTIC IMPLICATIONS IN GASTRIC CANCER.

Lymph node status is vital for gastric cancer (GC) prognosis, but the conventional pN stage may be limited by variations in lymphadenectomy and stage migration. The N-Ratio, which assesses the ratio o... To assess N-Ratios prognostic value in GC, particularly in patients with <25 resected lymph nodes.... Patients who underwent gastrectomy with curative intent for GC were retrospectively evaluated. The N-Ratio categories were determined using the ROC curve method, and the area under the curve (AUC) was... A total of 561 GC patients were included in the study, 57% had pN+ status, and 17.5% had <25 resected lymph nodes. N-Ratio, with a mean of 0.12, predicted survival with 74% accuracy (AUC=0.74; 95%CI 0... N-Ratio influenced survival in GC patients, especially in advanced lymph node disease (N-Ratio 3). Considering that N-Ratio does not impact pN0 cases, individualized prognosis assessment is essential ...

N1 lymph node detection in lymph node harvesting in non-small cell lung cancer: Formaldehyde exposure is a drawback?

This study aimed to evaluate the effect of lymph node dissection method on staging results, diagnosis of tumor metastasis in single or multiple N1 lymph nodes and survival rates in patients with non-s... Patients with NSCLC who underwent anatomic resection between September 2014 and October 2019 were examined prospectively. All patients with similar clinico-demographic characteristics were randomly as... There were no significant differences in N1 lymph node positivity between the two groups (p = 0.482). On average 9.08 lymph node sampling was performed in the surgical group and 2.39 in the pathology ... It is easier to detect lymph node involvement without introducing formaldehyde into the sample. We recommend that N1 lymph node dissection be performed on fresh specimens to detect more lymph node inv...