Asociación entre el standarized uptake value (SUV) máximo y el control local en pacientes con carcinoma de orofaringe tratados con radioterapia / Association between maximum standarised uptake value (SUV) and local control in patients with oropharyngeal carcinoma treated with radiotherapy

Objetivo: Analizar la capacidad pronóstica del valor de captación estandarizado máximo (SUVmáx) en el control local de la enfermedad en pacientes con carcinomas de orofaringe tratados con radioterapia. Material y métodos Estudio retrospectivo de 105 pacientes con carcinomas de orofaringe tratados con radioterapia, incluyendo tratamientos con quimio y biorradioterapia, y que contaron con una exploración PET-TC previa al inicio del tratamiento. Resultado Los pacientes con un valor del SUVmáx superior a 17,2 en la localización primaria del tumor tuvieron un riesgo significativamente más elevado de recidiva local. La supervivencia libre de recidiva local a los 5 años para los pacientes con un SUVmáx inferior o igual a 17,2 (n = 71) fue del 86,5% (IC dl 95%: 78,2-94,7%), y para los pacientes con un SUVmáx superior a 17,2 (n = 34) fue del 55,8% (IC del 95%: 36,0-75,6%) (p = 0,0001). Esta diferencia en control local se mantuvo independientemente de estatus VPH de los pacientes. La supervivencia específica fue igualmente inferior para los pacientes con un SUV superior a 17,2. La supervivencia específica a los 5 años para los pacientes con un SUVmáx superior a 17,2 fue del 39,5% (IC del 95%: 20,6-58,3%), significativamente más reducida que la de los pacientes con SUVmáx igual o inferior a 17,2, que fue del 77,3% (IC del 95%: 66,9-87,6%) (p = 0,0001). Conclusiones Los pacientes con carcinomas de orofaringe tratados con radioterapia con un SUVmáx superior a 17,2 a nivel de la localización primaria del tumor tuvieron un riesgo significativamente más elevado de recidiva local. (AU)

Objective: To analyse the prognostic ability of the maximum standardised uptake value (SUVmax) on local disease control in patients with oropharyngeal carcinoma treated with radiotherapy. Material and methods Retrospective study of 105 patients with oropharyngeal carcinomas treated with radiotherapy, including chemo- and bio-radiotherapy, and who had a PET-CT scan prior to the start of treatment. Result Patients with a SUVmax value higher than 17.2 at the primary tumour site had a significantly higher risk of local recurrence. The 5-year local recurrence-free survival for patients with SUVmax less than or equal to 17.2 (n=71) was 86.5% (95% CI: 78.2–94.7%), and for patients with SUVmax greater than 17.2 (n=34) it was 55.8% (95% CI: 36.0–75.6%) (P=.0001). This difference in local control was maintained regardless of patients’ HPV status. Specific survival was similarly lower for patients with a SUV greater than 17.2. The 5-year specific survival for patients with SUVmax greater than 17.2 was 39.5% (95% CI: 20.6–58.3%), significantly shorter than that of patients with SUVmax equal to or less than 17.2, which was 77.3% (95% CI: 66.9–87.6%) (P=.0001). Conclusions Patients with oropharyngeal carcinomas treated with radiotherapy with a SUVmax greater than 17.2 at the level of the primary tumour site had a significantly higher risk of local recurrence. (AU)

Association between maximum standarised uptake value (SUV) and local control in patients with oropharyngeal carcinoma treated with radiotherapy.

OBJECTIVE: To analyse the prognostic ability of the maximum standardised uptake value (SUVmax) on local disease control in patients with oropharyngeal carcinoma treated with radiotherapy. MATERIAL AND METHODS: Retrospective study of 105 patients with oropharyngeal carcinomas treated with radiotherapy, including chemo- and bio-radiotherapy, and who had a PET-CT scan prior to the start of treatment. RESULT: Patients with a SUVmax value higher than 17.2 at the primary tumour site had a significantly higher risk of local recurrence. The 5-year local recurrence-free survival for patients with SUVmax less than or equal to 17.2 (n = 71) was 86.5% (95% CI 78.2-94.7 %), and for patients with SUVmax greater than 17.2 (n = 34) it was 55.8% (95% CI 36.0-75.6 %) (P = 0.0001). This difference in local control was maintained regardless of patients' HPV status. Specific survival was similarly lower for patients with a SUV greater than 17.2. The 5-year specific survival for patients with SUVmax greater than 17.2 was 39.5% (95% CI: 20.6-58.3 %), significantly shorter than that of patients with SUVmax equal to or less than 17.2, which was 77.3% (95% CI: 66.9-87.6 %) (P = 0.0001). CONCLUSIONS: Patients with oropharyngeal carcinomas treated with radiotherapy with a SUVmax greater than 17.2 at the level of the primary tumour site had a significantly higher risk of local recurrence.

[Application of the self-evaluation questionnaire of the WHO multimodal strategy to improve the practice of hand hygiene in a tertiary hospital]. / Aplicación del cuestionario de autoevaluación de la estrategia multimodal de la OMS para mejorar la práctica de higiene de manos en un hospital de tercer nivel.

OBJECTIVE: Hand hygiene (HH) is the single most important and effective measure to reduce the risk of healthcare-related infections. However, low compliance with HH indications among healthcare professionals is often low. The objective of this study was to evaluate the implementation of a multimodal strategy to promote HH among healthcare professionals. METHODS: We used the "Application guide of the multimodal strategy of the World Health Organization for the improvement of hand hygiene", which consists of: changes to the system, education and training, evaluation and feedback, workplace reminders, organizational safety climate and monitoring of compliance with HH. The strategy was designed as an intervention study to promote HH in the Maternal and Child Insular University Hospital Complex in the period 2012-2020. RESULTS: Overall compliance with the HH indications at the end of the study period was 59.2%. The use of alcoholic-based products increased with respect to previous years (p <0.05), reaching 70 liters/1000 hospital admissions in the final year. Healthcare professionals perceived training and accessibility to an alcohol-based preparation at each point of care as the most effective measures for promoting good HH practice. CONCLUSIONS: The implementation of a multimodal intervention significantly improved compliance with handwashing and the use of alcohol-based products among healthcare professionals. Despite having previous training on hand hygiene, HH knowledge among professionals remains incomplete. Prior training followed by time worked are the most important determinants of knowledge and perceptions about hand hygiene.

Objetivo. El objetivo de este trabajo es evaluar la implementación de la aplicación de una estrategia multimodal para impulsar la promoción de la Higiene de Manos (HM). Métodos. Se utilizó la «Guía de aplicación de la estrategia multimodal de la Organización Mundial de la Salud para la mejora de la higiene de manos¼. La estrategia se planteó como un estudio de intervención para promover la HM en el Complejo Hospitalario Universitario Insular Materno Infantil en el período 2012-2020. Resultados. El cumplimiento global de las indicaciones de HM al final del periodo de estudio fue del 59,2%. El consumo de productos de base alcohólica aumentó con respecto a los años anteriores (p<0,05), siendo en el último año de 70 litros por cada 1000 estancias. La encuesta reveló que la formación y la existencia de preparado de base alcohólica en cada punto de atención eran percibidas por parte de los profesionales sanitarios como los principales aspectos facilitadores de la práctica de HM. Conclusiones. La implementación de una intervención multimodal mejoró significativamente la adhesión al lavado de manos y el uso de productos de base alcohólica entre los profesionales sanitarios. A pesar de tener formación previa sobre higiene de manos, los conocimientos de los profesionales son incompletos. La formación previa seguido del tiempo trabajado son los determinantes más importantes de las conocimientos y percepciones sobre higiene de manos.

Digital versus analog PET/CT in patients with known or suspected liver metastases.

AIM: To assess if digital PET/CT improves liver lesion detectability compared to analog PET/CT in patients with known or suspected liver metastases. MATERIALS AND METHODS: We prospectively included 83 cancer patients, with one or more of these conditions: history of liver metastases, clinical risk of having liver metastases or presence of suspected liver metastases on the first of the two PET/CTs. All patients were consecutively scanned on each PET/CT on the same day after a single [18F]fluorodeoxyglucose dose injection. The order of acquisition was randomly assigned. Three nuclear medicine physicians assessed both PET/CTs by counting the foci of high uptake suspicious of liver metastases. Findings were correlated with appropriate reference standards; 19 patients were excluded from the analysis due to insufficient lesion nature confirmation. The final sample consisted of 64 patients (34 women, mean age 68 ± 12 years). RESULTS: As per-patient analysis, the mean number of liver lesions detected by the digital PET/CT (3.84 ± 4.25) was significantly higher than that detected by the analog PET/CT (2.91 ± 3.31); P < 0.001. Fifty-five patients had a positive PET/CT study for liver lesions. In 26/55 patients (47%), the digital PET/CT detected more lesions; 7/26 patients (27%) had detectable lesions only by the digital system and had <10 mm of diameter. Twenty-nine patients had the same number of liver lesions detected by both systems. In nine patients both PET/CT systems were negative for liver lesions. CONCLUSION: Digital PET/CT offers improved detectability of liver lesions over the analog PET/CT in patients with known or suspected liver metastases.