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• W1215209868 abstract "the objective was to demonstrate if treatment modality, nutritional status and oropharyngeal flora contribute to the development of mucositis in radiotherapy- treated head and neck cancer.single-cohort study of patients with head and neck cancer (H&N) in which radiotherapy was indicated. Nutritional status was evaluated using SGA, BMI, and FFMI. A buccal smear was performed before radiotherapy for cultivation of bacteria and yeasts. Mucositis was evaluated using the WHO grades. Relative risk (RR) and its 95% CI were calculated.the study included 35 patients, 74.3% males, 63.8 (9.9) years of age, and 34.3% malnourished. The diagnoses included larynx (40.0%), oral (25.7%), and pharynx cancer (11.4%). Treatment comprised 66.0 Gy of radiation, chemotherapy (60.0%), and surgery (57.1%). Bacteria were found in 28.6%, including Staphylococcus aureus (8.6%) and Escherichia coli (8.6%). Yeasts (Candida spp.) were found in 35.3%. Mucositis was more frequent in patients with definitive radiotherapy [100% vs. 65%, p = 0.01; RR = 1.54 (CI95% 1.12 to 2.12)]. Neither SGA nor BMI or FFMI were related to the development or severity of mucositis. Positive cultures for bacteria before radiotherapy were related to severe mucositis [44.4% vs. 12%, p = 0.039; RR = 4.17 (CI95% 1.22 to 14.24)], but there was no relationship with the presence of yeasts. Previous surgery was not associated with the appearance of the studied strains of bacteria.bacterial colonization of the oropharynx prior to radiotherapy may be a factor for severe mucositis in H&N patients.Objetivo: el objetivo fue demostrar si la modalidad de tratamiento, el estado nutricional y la flora orofaríngea contribuyen al desarrollo de mucositis en pacientes con cáncer de cabeza y cuello tratados con radioterapia. Métodos: estudio de cohorte de pacientes con cáncer de cabeza y cuello (CyC) tratados con radioterapia. El estado nutricional se evaluó utilizando VGS, IMC e IMM. Se realizó un frotis bucal antes de la radioterapia para el cultivo de bacterias y levaduras. Se evaluó la mucositis usando los criterios de la OMS. Se calcularon el riesgo relativo (RR) y su IC del 95%. Resultados: el estudio incluyó a 35 pacientes, 74,3% hombres, 63,8 (9,9) años de edad, y 34,3% desnutridos. Los tumores estaban localizados en laringe (40,0%), boca (25,7%) y faringe (11,4%). El tratamiento consistió en 66,0 Gy de radiación, quimioterapia (60,0%) y cirugía (57,1%). Se encontraron bacterias en 28,6%, incluyendo Staphylococcus aureus (8,6%) y Escherichia coli (8,6%). Se encontró Candida spp. en el 35,3%. La mucositis fue más frecuente en los pacientes con radioterapia radical [100% vs. 65%, p = 0,01; RR = 1,54 (IC95% 1,12 a 2,12)]. Ni VGS, IMC ni IMM se relacionaron con el desarrollo o la gravedad de la mucositis. Los cultivos positivos para bacterias antes de la radioterapia se relacionaron con mucositis severa [44,4% vs. 12%, p = 0,039; RR = 4,17 (IC95% 1,22 a 14,24)], pero no hubo ninguna relación con la presencia de levaduras. La cirugía no se asoció con la aparición de las cepas estudiadas de bacterias. Conclusión: la colonización bacteriana de la orofaringe antes de la radioterapia puede ser un factor para la mucositis graves en pacientes con cáncer CyC." @default.
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• W1215209868 date "2015-09-01" @default.
• W1215209868 modified "2023-09-26" @default.
• W1215209868 title "NUTRITIONAL, MICROBIOLOGICAL, AND THERAPEUTIC FACTORS RELATED TO MUCOSITIS IN HEAD AND NECK CANCER PATIENTS: A COHORT STUDY." @default.
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• W1215209868 doi "https://doi.org/10.3305/nh.2015.32.3.9299" @default.
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