Prospective pilot study to explore the melatonin level in brain tumor patients undergoing radiotherapy.

PURPOSE: Our aim was to assess if the radiotherapy dose decreased the melatonin levels as well as the quality of life and sleep in brain tumor patients. METHODS: We performed a follow-up study on melatonin levels in saliva and its urinary metabolite sulfatoxi-melatonine (STM) samples in patients with brain tumors treated with radiotherapy close to the pineal gland's area. We analyzed the cortisol, cortisone, and excrection of STM normalized by urinary creatinine. In some cases, a polysomnography (PSG) was performed. Quality of life questionnaires, distress scale, and sleepiness inventories were also administered. RESULTS: We included twelve patients (experimental arm) and eight healthy controls (control group). No differences were observed between experimental arm and control group at baseline. No differences were detected in the experimental arm before and after delivering the radiotherapy. No clinically significant differences were found according to the radiotherapy dose delivered. CONCLUSION: Melatonin levels and PSG outcomes do not change after receiving radiotherapy. The findings of this study do not show a statistically significant association between the treatment and the quality of life and sleep.

In-Home Diagnosis of Obstructive Sleep Apnea Using Automatic Video Analysis / Diagnóstico domiciliario de apnea obstructiva del sueño utilizando el análisis automático de vídeo

Study objectives: To evaluate the diagnostic accuracy of a non-invasive technology based on image processing for the identification of obstructive sleep apnea (OSA) and its severity at patients' home. METHODS: Observational, prospective, diagnostic accuracy study to evaluate the degree of measure agreement between Sleepwise (SW), in-laboratory attended polysomnography (PSG) and a home sleep apnea test (HSAT). 38 consecutive subjects with suspected OSA referred as outpatients to the sleep unit were recruited from September 2016 to September 2017. All patients underwent in-laboratory attended PSG and image processing with SW simultaneously overnight. Subsequently, a HSAT and image processing with SW were performed simultaneously overnight at patients' home, and the 2 nights after, patients underwent only image processing with SW consecutively. RESULTS: In-laboratory polysomnography and SW had a Lin's concordance correlation coefficient of 0.933 and a Kappa of 0.930. Between HSAT and SW the Lin's concordance correlation coefficient was 0.842 and a Kappa of 0.571. Agreement between two consecutive nights with SW recording showed a Lin's concordance correlation coefficient of 0.923 and a Kappa of 0. 837. CONCLUSIONS: SW was highly accurate for non-invasive and automatic diagnosis of OSA in outpatients compared to standard methods for OSA diagnosis either in-laboratory attended PSG or HSAT. SW proved to be a technique with repeatable and concordant results on different nights for the same patient. We conclude SW is a non-invasive, easy-to-use, portable, effective and highly accurate system for the in-home diagnosis of OSA

OBJETIVOS: Evaluar la precisión diagnóstica de una tecnología no invasiva basada en el procesamiento de imágenes para la identificación de la apnea obstructiva del sueño (AOS) y su gravedad en el domicilio de los pacientes. MÉTODOS: Estudio observacional, prospectivo y de precisión diagnóstica para evaluar el grado de concordancia entre las mediciones de Sleepwise (SW), polisomnografía (PSG) asistida en el laboratorio y poligrafía respiratoria domiciliaria (PRD). Se reclutaron 38 sujetos consecutivos con sospecha de AOS, referidos como pacientes ambulatorios a la unidad de sueño entre septiembre de 2016 y septiembre de 2017. Se les realizó a todos una PSG y procesamiento de imagen con SW durante la noche en el laboratorio. Posteriormente, se realizó una PRD y procesamiento de imágenes con SW de forma simultánea durante la noche en su domicilio, y las 2 noches siguientes los pacientes se sometieron solo a procesamiento de imágenes con SW. RESULTADOS: La polisomnografía en el laboratorio y el SW mostraron un coeficiente de correlación de concordancia de Lin de 0,933 y un Kappa de 0,930. Entre la PRD y el SW el coeficiente de correlación de concordancia de Lin fue de 0,842 y un Kappa de 0,571. La concordancia entre las 2 noches consecutivas de grabación con el SW mostró un coeficiente de correlación de concordancia de Lin de 0,923 y un Kappa de 0,837. CONCLUSIONES: El SW mostró alta precisión para el diagnóstico no invasivo y automatizado de la AOS en pacientes ambulatorios en comparación con los métodos estándar para el diagnóstico de la AOS, ya sean la PSG asistida en el laboratorio o la PRD. El SW demostró ser una técnica con resultados reproducibles y concordantes en diferentes noches para el mismo paciente. Concluimos que la SW es un sistema no invasivo, fácil de usar, portátil, eficaz y altamente preciso para el diagnóstico domiciliario de la AOS

In-Home Diagnosis of Obstructive Sleep Apnea Using Automatic Video Analysis.

STUDY OBJECTIVES: To evaluate the diagnostic accuracy of a non-invasive technology based on image processing for the identification of obstructive sleep apnea (OSA) and its severity at patients' home. METHODS: Observational, prospective, diagnostic accuracy study to evaluate the degree of measure agreement between Sleepwise (SW), in-laboratory attended polysomnography (PSG) and a home sleep apnea test (HSAT). 38 consecutive subjects with suspected OSA referred as outpatients to the sleep unit were recruited from September 2016 to September 2017. All patients underwent in-laboratory attended PSG and image processing with SW simultaneously overnight. Subsequently, a HSAT and image processing with SW were performed simultaneously overnight at patients' home, and the 2 nights after, patients underwent only image processing with SW consecutively. RESULTS: In-laboratory polysomnography and SW had a Lin's concordance correlation coefficient of 0.933 and a κ of 0.930. Between HSAT and SW the Lin's concordance correlation coefficient was 0.842 and a κ of 0.571. Agreement between two consecutive nights with SW recording showed a Lin's concordance correlation coefficient of 0.923 and a κ of 0. 837. CONCLUSIONS: SW was highly accurate for non-invasive and automatic diagnosis of OSA in outpatients compared to standard methods for OSA diagnosis either in-laboratory attended PSG or HSAT. SW proved to be a technique with repeatable and concordant results on different nights for the same patient. We conclude SW is a non-invasive, easy-to-use, portable, effective and highly accurate system for the in-home diagnosis of OSA.

Limitación al flujo aéreo en pacientes con insuficiencia cardíaca: prevalencia y factores asociados / Airflow limitation in patients with heart failure: Prevalence and associated factors

Introducción: La enfermedad pulmonar obstructiva crónica y la insuficiencia cardíaca (IC) son 2 enfermedades con una elevada morbimortalidad. La coexistencia de estas 2 enfermedades se estima que es frecuente, pero ha sido escasamente estudiada. Objetivo: Estudiar la prevalencia de limitación al flujo aéreo en una muestra de pacientes diagnosticados de IC en seguimiento en una unidad de IC y valorar las características y comorbilidades de estos pacientes. Métodos: Se trata de un estudio prospectivo observacional. Se incluyeron de forma consecutiva los pacientes visitados en la Unidad de Insuficiencia Cardíaca del Hospital Universitari Germans Trias i Pujol entre enero del 2014 y junio del 2015. Se realizaron pruebas funcionales respiratorias y se obtuvieron datos clínicos. Resultados: Se incluyeron 118 pacientes en el estudio (edad 67,2 años; DE 12,1; el 77,1% hombres). La prevalencia de limitación al flujo aéreo fue del 36,4%, con un porcentaje de infradiagnóstico del 67,4%. Los pacientes con limitación al flujo aéreo presentaban un aumento de las comorbilidades y de la mortalidad. Conclusión: La prevalencia de limitación al flujo aéreo en pacientes con IC es elevada, con un importante grado de infradiagnóstico. Sería recomendable la realización de una espirometría de cribado en estos pacientes

Background: Chronic obstructive pulmonary disease and heart failure (HF) are 2 diseases with high morbidity and mortality. The coexistence of these two diseases is estimated to be frequent, but has been poorly studied. Aim: To study the prevalence of airflow limitation in a sample of patients diagnosed with HF in follow-up in an HF unit and to assess their characteristics and comorbidities. Methods: This is a prospective observational study. The patients who visited the HF Unit of the Hospital Universitari Germans Trias i Pujol between January 2014 and June 2015 were included consecutively. Respiratory functional tests were performed and clinical data were obtained. Results: 118 patients were included in the study (age 67.2 years, 77.1% men). The prevalence of non-reversible airflow obstruction was 36.4%, with an underdiagnosis percentage of 67.4%. Patients with airflow limitation had an increase in comorbidities, but no worse prognosis. Conclusion: The prevalence of airflow limitation in patients with HF is high, with a significant degree of underdiagnosis. It seems reasonable to recommend performing a screening spirometry in these patients

Airflow limitation in patients with heart failure: Prevalence and associated factors. / Limitación al flujo aéreo en pacientes con insuficiencia cardíaca: prevalencia y factores asociados.

BACKGROUND: Chronic obstructive pulmonary disease and heart failure (HF) are 2 diseases with high morbidity and mortality. The coexistence of these two diseases is estimated to be frequent, but has been poorly studied. AIM: To study the prevalence of airflow limitation in a sample of patients diagnosed with HF in follow-up in an HF unit and to assess their characteristics and comorbidities. METHODS: This is a prospective observational study. The patients who visited the HF Unit of the Hospital Universitari Germans Trias i Pujol between January 2014 and June 2015 were included consecutively. Respiratory functional tests were performed and clinical data were obtained. RESULTS: 118 patients were included in the study (age 67.2 years, 77.1% men). The prevalence of non-reversible airflow obstruction was 36.4%, with an underdiagnosis percentage of 67.4%. Patients with airflow limitation had an increase in comorbidities, but no worse prognosis. CONCLUSION: The prevalence of airflow limitation in patients with HF is high, with a significant degree of underdiagnosis. It seems reasonable to recommend performing a screening spirometry in these patients.

Automatic Video Analysis for Obstructive Sleep Apnea Diagnosis.

STUDY OBJECTIVES: We investigated the diagnostic accuracy for the identification of obstructive sleep apnea (OSA) and its severity of a noninvasive technology based on image processing (SleepWise). METHODS: This is an observational, prospective study to evaluate the degree of agreement between polysomnography (PSG) and SleepWise. We recruited 56 consecutive subjects with suspected OSA who were referred as outpatients to the Sleep Unit of the Hospital Universitari Germans Trias i Pujol (HUGTiP) from January 2013 to January 2014. All patients underwent laboratory PSG and image processing with SleepWise simultaneously the same night. Both PSG and SleepWise analyses were carried independently and blindly. RESULTS: We analyzed 50 of the 56 patients recruited. OSA was diagnosed through PSG in a total of 44 patients (88%) with a median apnea-hypopnea index (AHI) of 25.35 (24.9). According to SleepWise, 45 patients (90%) met the criteria for a diagnosis of OSA, with a median AHI of 22.8 (22.03). An analysis of the ability of PSG and SleepWise to classify patients by severity on the basis of their AHI shows that the two diagnostic systems distribute the different groups similarly. According to PSG, 23 patients (46%) had a diagnosis of severe OSA, 11 patients (22%) moderate OSA, and 10 patients (20%) mild OSA. According to SleepWise, 20, 13, and 12 patients (40%, 26%, and 24%, respectively) had a diagnosis of severe, moderate, and mild OSA respectively. For OSA diagnosis, SleepWise was found to have sensitivity of 100% and specificity of 83% in relation to PSG. The positive predictive value was 97% and the negative predictive value was 100%. The Bland-Altman plot comparing the mean AHI values obtained through PSG and SleepWise shows very good agreement between the two diagnostic techniques, with a bias of -3.85, a standard error of 12.18, and a confidence interval of -0.39 to -7.31. CONCLUSIONS: SleepWise was reasonably accurate for noninvasive and automatic diagnosis of OSA in outpatients. SleepWise determined the severity of OSA with high reliability. The current study including simultaneous laboratory PSG and SleepWise processing image is proposed as a reasonable validation standard.

Results of bronchial artery embolization for the treatment of hemoptysis caused by neoplasm.

PURPOSE: To describe experience with bronchial artery embolization (BAE) in a cohort of patients with cancer. MATERIALS AND METHODS: All consecutive patients with cancer and at least one episode of hemoptysis that required BAE during a 14-year period were included in this observational retrospective review. The endpoints of the study were immediate success, recurrence of hemoptysis, mortality resulting from hemoptysis, and all-cause mortality. RESULTS: Immediate control of bleeding was achieved in 31 of 40 patients (77.5%). Recurrence requiring BAE occurred in eight patients (20%). Cumulative hemoptysis control rate was 0.90 (95% confidence interval [CI], 0.80-1.0) at 1 month and 0.65 (95% CI, 0.44-0.86) at 6 months. Probability of survival was 0.75 (95% CI, 0.62-0.88) at 1 month, 0.42 (95% CI, 0.27-0.57) at 6 months, 0.36 (95% CI, 0.21-0.51) at 12 months, and 0.08 (95% CI, 0.0-0.18) at 3 years. CONCLUSIONS: BAE is an effective and safe technique in the treatment of hemoptysis in patients with cancer. Nevertheless, mortality resulting from hemoptysis and recurrence rate are high among these patients secondary to progression of the underlying disease.

Anemia is a mortality predictor in hospitalized patients for COPD exacerbation.

BACKGROUND: Anemia is a recognized prognostic factor in many chronic illnesses, but there is limited information about its impact on outcomes in patients hospitalized for acute COPD exacerbation (AECOPD). AIM: To investigate whether anemia exerts an effect on mortality in patients admitted for AECOPD after one year of follow-up. Methods. From November 2007 to November 2009 we recruited 117 patients who required hospitalization due to an AECOPD. Clinical, functional and laboratory parameters on admission were prospectively assessed. Patients were followed up during one year. Mortality and days-to-death were collected. RESULTS: Mean age 72 (SD ± 9); FEV1 37.4 (SD ± 12); mortality after 1 year was 22.2%. Mean survival: 339 days. Comparing patients who died to those who survived we found significant differences (p < 0,000) in hemoglobin (Hb) (12.4 vs 13.8 mg/dl) and hematocrit (Ht) (38 vs 41%). Anemia (Hb < 13 g.dl⁻¹) prevalence was 33%. Those who died had experienced 3.5 exacerbations in previous year vs 1.5 exacerbations in the case of the survivors (p = 0.000). Lung function and nutritional status were similar, except for percentage of muscle mass (%) (35 vs 39%; p = 0.015) and albumin (33 vs 37 mg/dl; p = 0.039). These variables were included in a Multivariate Cox Proportional Hazards Model; anemia and previous exacerbations resulted as independent factors for mortality. Mortality risk for patients with anemia was 5.9(CI: 1.9-19); for patients with > 1 exacerbation in the previous year was 5.9(CI: 1.3-26.5). CONCLUSION: Anemia and previous exacerbations were independent predictors of mortality after one year in patients hospitalized for AECOPD.