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This study explores indoor air pollutant (PM1, PM2.5 and NO2) concentrations over a 15-week period during the COVID-19 pandemic in a typical suburban household in Oxford, UK. A multi-room intensive monitoring study was conducted in a single dwelling using 10 air quality sensors measuring real-time pollutant concentrations at 10 second intervals to assess temporal and spatial variability in PM1, PM2.5 and NO2 concentrations, identify pollution-prone areas, and investigate the impact of residents' activities on indoor air quality. Significant spatial variations in PM concentrations were observed within the study dwelling, with highest hourly concentrations (769.0 & 300.9 µg m-3 for PM2.5, and PM1, respectively) observed in the upstairs study room, which had poor ventilation. Cooking activities were identified as a major contributor to indoor particulate pollution, with peak concentrations aligning with cooking events. Indoor NO2 levels were typically higher than outdoor levels, particularly in the kitchen where a gas-cooking appliance was used. There was no significant association observed between outdoor and indoor PM concentrations; however, a clear correlation was evident between kitchen PM emissions and indoor levels. Similarly, outdoor NO2 had a limited influence on indoor air quality compared to kitchen activities. Indoor sources were found to dominate for both PM and NO2, with higher Indoor/Outdoor (I/O) ratios observed in the upstairs bedroom and the kitchen. Overall, our findings highlight the contribution of indoor air pollutant sources and domestic activities to indoor air pollution exposure, notably during the COVID-19 pandemic when people were typically spending more time in domestic settings. Our novel findings, which suggest high levels of pollutant concentrations in upstairs (first floor) rooms, underscore the necessity for targeted interventions. These interventions include the implementation of source control measures, effective ventilation strategies and occupant education for behaviour change, all aimed at improving indoor air quality and promoting healthier living environments.

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BACKGROUND: Ablation or surgical excision is the typical treatment of anal high-grade squamous intraepithelial lesions (HSIL). Recurrences are common due to the persistence of underlying human papillomavirus (HPV) infection. Additional well-tolerated and effective non-surgical options for HPV-associated anal disease are needed. METHODS: This 3+3 dose escalation Phase I clinical trial evaluated the safety and tolerability of artesunate suppositories in the treatment of patients with biopsy-proven HSIL. RESULTS: The maximal tolerated dose was 400 mg, administered in 3 cycles. All adverse events associated with the use 200- and 400-mg artesunate suppositories were Grade 1. At the 600-mg dose, patients experienced clinically significant nausea. CONCLUSION: Artesunate suppositories are a safe treatment option for anal HSIL.

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BACKGROUND: Readmission after ileostomy creation in patients undergoing colorectal surgery creates a significant burden on health care cost and patient quality of care, with a 30-day readmission rate of 40%. OBJECTIVE: This study aimed to evaluate the implementation of our perioperative quality improvement program, Decreasing Readmissions After Ileostomy Creation. DESIGN: Perioperative interventions were administered to patients who underwent ileostomy creation. SETTINGS: A single tertiary care academic center. PATIENTS: Eighty patients participated in this program from February 2020 to January 2021. MAIN OUTCOME MEASURES: The primary outcomes measured were 30-day readmission rates and causes of readmission, which were compared to a historical national database. Descriptive statistics were used to evaluate the effectiveness of this quality improvement program. RESULTS: Eighty patients were enrolled in this prospective quality improvement program. The mean age was 52 (±15.06) years. The most common indication for patients undergoing creation of an ileostomy was colorectal cancer (40%; n = 32). The overall 30-day readmission rate was 8.75% (n = 7) throughout the study period, which was significantly lower than historical cohort data (20.10%; p = 0.01). Among the 7 readmitted patients, 3 (3.75%) were readmitted due to dehydration. The most significant associated risk factor for all-cause readmission was urgent/emergent operative status, which was associated with an increased risk of readmission ( p = 0.01). The 3 readmitted patients with dehydration had a mean Dehydration Readmission After Ileostomy Prediction risk score of 11.71 points, compared to 9.59 points in nondehydrated patients, who did not require readmission ( p = 0.38). LIMITATIONS: This study is limited by its small sample size (N = 80). CONCLUSIONS: The Decreasing Readmissions After Ileostomy Creation program has been successful in reducing both the all-cause readmission rate and readmission due to dehydration both within an academic tertiary care referral center and in comparison with historical readmission rates. See Video Abstract at http://links.lww.com/DCR/B894 . DISMINUCIN DE LA READMISIN DESPUS DE LA CREACIN DE UNA ILEOSTOMA MEDIANTE UN PROGRAMA DE MEJORA DE LA CALIDAD PERIOPERATORIA: ANTECEDENTES:La readmisión después de la creación de una ileostomía en pacientes de cirugía colorrectal crea una carga significativa sobre el costo de la atención médica y la calidad de la atención del paciente, con una tasa de readmisión a los 30 días que llega al 40%.OBJETIVO:Este estudio tiene como objetivo evaluar la implementación de nuestro programa de mejora de la calidad perioperatoria que disminuyen los reingresos después de la creación de ileostomía.DISEÑO:Se administraron intervenciones perioperatorias a pacientes que se sometieron a la creación de una ileostomía.AJUSTE:Se trataba de un único centro académico de atención terciaria.PACIENTES:Participaron 80 pacientes en este programa desde febrero de 2020 hasta enero de 2021.PRINCIPALES MEDIDAS DE RESULTADO:Los principales resultados medidos fueron las tasas de reingreso a los 30 días y las causas de reingreso, que se compararon con una base de datos histórica nacional. Se utilizaron estadísticas descriptivas para evaluar la eficacia de este programa de mejora de la calidad.RESULTADOS:Ochenta pacientes se inscribieron en este programa prospectivo de mejora de la calidad. La edad media fue de 52 (± 15,06) años. La indicación más común para los pacientes que se sometieron a la creación de una ileostomía fue el cáncer colorrectal (40%, n = 32). La tasa general de reingreso a los 30 días fue del 8,75% (n = 7) durante todo el período de estudio, lo que fue significativamente más bajo que los datos históricos de la cohorte (20,10%, p = 0,01). Entre los 7 pacientes readmitidos, tres (3,75%) fueron readmitidos por deshidratación. El factor de riesgo asociado más significativo para la readmisión por todas las causas fue el estado operatorio urgente / emergencia, que se asoció con un mayor riesgo de readmisión (p = 0,01). Los tres pacientes readmitidos con deshidratación tuvieron una puntuación de riesgo promedio de readmisión por deshidratación después de la predicción de ileostomía de 11,71 puntos, en comparación con los pacientes no deshidratados, que no requirieron readmisión (media, 9,59 puntos, p = 0,38).LIMITACIONES:Este estudio está limitado por su pequeño tamaño de muestra (n = 80).CONCLUSIONES:El programa de disminución de las readmisiones después de la creación de una ileostomía ha logrado reducir tanto la tasa de readmisión por todas las causas como la readmisión por deshidratación, tanto dentro de un centro académico de referencia de atención terciaria como en comparación con las tasas históricas de readmisión. Consulte Video Resumen en http://links.lww.com/DCR/B894 . (Traducción-Dr Yolanda Colorado ).

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