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1.
Am J Surg ; 228: 141-145, 2024 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-37718168

RESUMEN

BACKGROUND: Early-onset colon cancer (EOCC) has increasing incidence and disproportionately affects African-Americans. This analysis aims to compare EOCC survival among Black and White patients after matching relevant socio-demographic factors and stage. METHODS: The 2004-2017 NCDB database was queried for Black and White patients, age<50, who underwent colectomy for adenocarcinoma. A one-to-one match on race was performed based on sociodemographic factors and disease stage (I-IV). Five-year survival differences were analyzed with Cox proportional hazards models. RESULTS: 5322 Black-White matched pairs were analyzed. Compared to White patients, Black patients averaged more days to surgery (19 â€‹± â€‹68 vs 16 days â€‹± â€‹32, p â€‹< â€‹0.001) and to chemotherapy (63 â€‹± â€‹8 vs. 57 â€‹± â€‹39, p â€‹< â€‹0.001). Black stage III patients were 20% less likely to receive chemotherapy (OR 0.8, 95% CI 0.7-0.9, p â€‹= â€‹0.0006), and had a 17% increased rate of death (HR 1.17, 95% CI 1.0-1.3, p â€‹= â€‹0.01) after adjusting for sex, comorbidity score, tumor location and chemotherapy. CONCLUSIONS: Black patients with stage 3 EOCC are less likely to receive chemotherapy and have worse survival. Further evaluation is warranted to identify potential factors driving these observed.


Asunto(s)
Neoplasias del Colon , Humanos , Persona de Mediana Edad , Estimación de Kaplan-Meier , Estadificación de Neoplasias , Neoplasias del Colon/cirugía , Modelos de Riesgos Proporcionales , Disparidades en Atención de Salud , Blanco
2.
J Surg Res ; 283: 923-928, 2023 03.
Artículo en Inglés | MEDLINE | ID: mdl-36915020

RESUMEN

INTRODUCTION: Patients often refer to the internet to learn about different health conditions. This study aims to assess the landscape of online health information on malignant colorectal conditions, focusing on the popularity, quantity, and quality of internet resources pertaining to these conditions. This information can be used as a guide for surgeons to supplement patient information at the time of surgical evaluation and to help design optimal online health information. METHODS: The terms "colon cancer," "rectal cancer," "anal cancer," and "colorectal cancer" were searched using the Google search engine. The number of search results or "hits" obtained per search term was recorded and the first 50 websites for each search term were reviewed. Included websites did not have a password requirement, were in English, and were free. Quality assessments were performed using the DISCERN instrument, and mean DISCERN scores were compared using analysis of variance. The popularity of each search term was determined using Google Trends, which generates a relative search volume score. RESULTS: A total of 431 million hits were obtained for the term "colon cancer," 72.5 million for "rectal cancer," 244 million for "anal cancer," and 194 million for "colorectal cancer." Mean DISCERN scores for reviewed websites ranged between 39.7 and 40.6, and were thus within the "fair" category. There were no significant differences in mean DISCERN scores across search terms (P = 0.5). Colon cancer had the highest relative search volume score (61.8), followed by colorectal cancer (43.4/100), rectal cancer (42.5/100), and anal cancer (41.7/100). CONCLUSIONS: Although there is a large amount of online information on malignant colorectal conditions, the quality of the available information is inadequate. Clinician guidance to resources aimed at higher quality from guidance of the DISCERN tool may be of value for patient education.


Asunto(s)
Neoplasias del Ano , Neoplasias del Colon , Información de Salud al Consumidor , Neoplasias del Recto , Humanos , Motor de Búsqueda , Síndrome , Internet , Comprensión
3.
Surg Endosc ; 36(12): 9106-9112, 2022 12.
Artículo en Inglés | MEDLINE | ID: mdl-35713720

RESUMEN

BACKGROUND: The feasibility of remote visits following abdominal colorectal surgery has not been studied in relation to efficacy, patient satisfaction, and surgeon satisfaction. This study aims to assess reliability and satisfaction with a web-based questionnaire for post-operative visits following abdominal colorectal surgery. METHODS: This was a prospective single-arm cohort study at single-tertiary care center during admission for abdominal colorectal surgery. Using a web-based patient portal, patients completed a questionnaire 48 h prior to their scheduled in-person follow-up visits and submitted photographs of their incisions. Surgeons reviewed patient-entered data and responded within 24 h. Following the subsequent in-person visit, surgeons completed questionnaires to compare the accuracy of the web-based vs. in-person evaluations. Lastly, patients and surgeons completed separate satisfaction surveys after the in-person visits. RESULTS: A total of 33 patients were enrolled, of which 30 (90.9%) successfully completed the web questionnaire. Providers reported the online questionnaire to be concordant with the in-person visit in 90% of cases. Of the patients who completed the study, only half found the survey alone to be acceptable for follow-up. Patients spent significantly less time completing the online questionnaire (≤ 10 min) than in-person visits, including travel time (75 min, IQR 50-100). Only 12 patients (40%) uploaded photographs of their incisions. During in-person visits, management changes were employed in four patients (13.3%), of which 3 required treatment of superficial surgical site infections (10%). CONCLUSION: This asynchronous web-based visit format was acceptable to colorectal surgeons but was only embraced by half of patients, despite considerable time savings. While patients preferred in-person visits, there may be opportunities to expand TeleHealth acceptance that focus on patient selection and education. CLINICALTRIALS: gov: NCT05084131.


Asunto(s)
Neoplasias Colorrectales , Telemedicina , Humanos , Estudios de Cohortes , Satisfacción del Paciente , Satisfacción Personal , Estudios Prospectivos , Reproducibilidad de los Resultados
4.
Surg Endosc ; 36(7): 5408-5415, 2022 07.
Artículo en Inglés | MEDLINE | ID: mdl-34988741

RESUMEN

INTRODUCTION: Malnutrition and deconditioning impact postoperative morbidity and mortality. Computed tomography (CT) body composition variables are used as markers of nutritional status and sarcopenia. The objective of this study is to evaluate the impact of sarcopenia, using CT variables, on postoperative outcomes following transanal total mesorectal excision (TaTME) for rectal cancer. METHODS: This was an institutional retrospective cohort analysis of consecutive rectal cancer patients who underwent TaTME between April 2014 and May 2020. Psoas muscle index (PMI) was calculated from diagnostic CT scans. Based on previous studies, patients in the lowest PMI tertile by gender were considered sarcopenic. Fisher's exact and Mann-Whitney U test were used to compare categorical and continuous variables, respectively. Readmission rates and postoperative complications were compared between groups. Backward stepwise logistic regression was used to determine the association between sarcopenia and 30-day postoperative complications. RESULTS: 85 patients were analyzed, of which 63% were male, with a median age of 59 (IQR: 51-65), and median BMI of 28 (IQR: 24-32). Of the entire cohort, 34% (n = 29) were sarcopenic (median PMI 5.39 IQR: 4.49-6.71). No significant difference in baseline characteristics between sarcopenic and nonsarcopenic patients were observed. 55% of sarcopenic patients experienced a complication within 30 days compared to 24% of nonsarcopenic patients (p = 0.01). 41% of sarcopenic patients required hospital readmission within 30 days compared to 17% of their nonsarcopenic counterparts (p = 0.014). Sarcopenic patients also experienced significantly higher rates of post-operative small bowel obstruction (10% vs. 0%, p = 0.04). Multivariable analyses identified that sarcopenic patients have a fourfold increase in odds of experiencing a 30-day postoperative complication (OR: 4.44, 95%CI: 1.6-12.4, p < 0.05) after adjusting for gender. CONCLUSION: Preoperative sarcopenia is associated with increased 30-day postoperative complications following TaTME for rectal cancer. Postoperative complications can have serious oncologic implications by delaying adjuvant chemotherapy. Therefore, preoperative recognition of sarcopenia prior to undergoing TaTME for rectal cancer may provide an opportunity for early intervention with prehabilitation programs.


Asunto(s)
Laparoscopía , Neoplasias del Recto , Sarcopenia , Cirugía Endoscópica Transanal , Femenino , Humanos , Masculino , Complicaciones Posoperatorias/epidemiología , Complicaciones Posoperatorias/etiología , Complicaciones Posoperatorias/cirugía , Neoplasias del Recto/complicaciones , Neoplasias del Recto/cirugía , Recto/cirugía , Estudios Retrospectivos , Sarcopenia/complicaciones , Sarcopenia/cirugía , Cirugía Endoscópica Transanal/métodos , Resultado del Tratamiento
5.
Dis Colon Rectum ; 65(6): 827-836, 2022 06 01.
Artículo en Inglés | MEDLINE | ID: mdl-34629431

RESUMEN

BACKGROUND: Recent series have raised concerns about the oncologic outcomes of transanal total mesorectal excision for mid and low rectal cancer. There is a paucity of large data sets from the United States to contribute to the ongoing international discourse. OBJECTIVE: This study aimed to investigate the rate of local recurrence and other oncologic outcomes in patients undergoing transanal total mesorectal excision for rectal adenocarcinoma. DESIGN: This study is a retrospective review of patients undergoing transanal total mesorectal excision for primary rectal cancer from January 2014 to December 2019. SETTINGS: This study was conducted at a single academic tertiary care medical center in the United States. PATIENTS: Consecutive patients aged ≥18 years undergoing surgical resection for primary rectal cancer were selected. INTERVENTION: The transanal total mesorectal excision procedures were performed utilizing a 2-team approach. MAIN OUTCOME MEASURES: Primary outcomes were pathologic quality, local and distant recurrence, treatment-related complications, and overall- and cancer-specific survival. RESULTS: Seventy-nine consecutive patients were included. The median age was 58 years (interquartile range, 50-64), and median BMI was 28 kg/m2 (interquartile range, 24.6-32.4). The mesorectum was complete in 69 patients (87.3%), nearly complete in 9 (11.4%), and incomplete in 1 (1.3%). There was circumferential resection margin involvement (<1 mm) in 4 patients (5.1%), and no patients had a positive distal margin (<1 mm) or intraoperative rectal perforation. Composite optimal pathology was achieved in 94.9% of specimens. Median follow-up was 29 months (range, 6-68). There were no local recurrences. Distant metastases were found in 10 (13.5%) patients and diagnosed after a median of 14 months (range, 0.6-53). Disease-free survival was 91.2% at 2 years, and overall survival was 94.7% at 2 years. LIMITATIONS: Retrospective design, a single center, and relatively short follow-up period were limitations of this study. CONCLUSION: The oncologic outcomes of this cohort support the use of transanal total mesorectal excision in the surgical management of mid to low rectal cancer at centers with appropriate expertise. See Video Abstract at http://links.lww.com/DCR/B723. RESULTADOS ONCOLGICOS DESPUS DE LA EXCISIN TOTAL DEL MESORRECTO POR VA TRANSANAL EN CASOS DE CNCER RECTAL: ANTECEDENTES:Estudios recientes han suscitado preocupación sobre los resultados oncológicos de la excisión total del mesorecto por vía transanal en casos de cáncer de recto medio y bajo. Existe una gran escasez de conjuntos de datos en los Estados Unidos, para contribuir en el actual discurso internacional sobre el tema.OBJETIVO:Investigar la tasa de recurrencia local y otros resultados oncológicos en pacientes sometidos a una excisión total del mesorrecto por vía transanal por adenocarcinomas de recto.DISEÑO:Revisión retrospectiva de pacientes sometidos a excisión total del mesorecto por vía transanal en casos de cáncer de recto primario desde enero de 2014 hasta diciembre de 2019.AJUSTE:Centro médico Universitario de atención terciaria único en los Estados Unidos.PACIENTES:Aquellos pacientes consecutivos de ≥ 18 años de edad, sometidos a resección quirúrgica por cáncer de recto primario.INTERVENCIÓN:Los procedimientos de excisión total del mesorecto por vía transanal se realizaron utilizando un enfoque de dos equipos.PRINCIPALES MEDIDAS DE RESULTADO:Los resultados primarios fueron la calidad anatomo-patológica de las piezas, la recidiva local y a distancia, las complicaciones relacionadas con el tratamiento y la sobrevida global específica para el cáncer.RESULTADOS:Se incluyeron 79 pacientes consecutivos. La mediana de edades fue de 58 años (IQR, 50-64) y la mediana del índice de masa corporal fue de 28 kg / m (IQR, 24,6-32,4). El mesorrecto se encontraba completo en 69 pacientes (87,3%), casi completo en 9 (11,4%) e incompleto en 1 (1,3%). Hubo afectación de CRM (<1 mm) en 4 pacientes (5,1%) y ningún paciente tuvo un margen distal positivo (<1 mm) o perforación rectal intraoperatoria. La histopatología óptima compuesta se logró en el 94,9% de las muestras. La mediana de seguimiento fue de 29 meses (rango 6-68). No se presentaron recurrencias locales. Se encontraron metástasis a distancia en 10 (13,5%) pacientes y se diagnosticaron después de una mediana de 14 meses (rango 0,6-53). La sobrevida libre de enfermedad fue del 91,2% a los 2 años y la sobrevida global fue del 94,7% a los 2 años.LIMITACIONES:Diseño retrospectivo, unicéntrico y período de seguimiento relativamente corto.CONCLUSIÓN:Los resultados oncológicos de este estudio de cohortes, apoyan la realización de excisión total del mesorecto por vía transanal para el tratamiento quirúrgico del cáncer de recto medio y bajo, en centros con la experiencia adecuada. Consulte Video Resumen en http://links.lww.com/DCR/B723. (Traducción-Dr. Xavier Delgadillo).


Asunto(s)
Proctectomía , Neoplasias del Recto , Adolescente , Adulto , Humanos , Márgenes de Escisión , Persona de Mediana Edad , Estadificación de Neoplasias , Proctectomía/métodos , Neoplasias del Recto/patología , Recto/patología , Estudios Retrospectivos
6.
Placenta ; 36(10): 1161-6, 2015 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-26303757

RESUMEN

INTRODUCTION: During a pregnancy complicated by diabetes, the placenta undergoes a number of functional and structural pathologic changes. However, differences across studies may reflect pathophysiologic differences of diabetes types under investigation. METHODS: We examined placental pathology from women ages 18-40 years with self-identified race/ethnicity; singleton, live births; and type 1 (T1DM; n = 36), type 2 (T2DM; n = 37), or gestational diabetes mellitus (GDM; n = 126). Clinical data were abstracted from medical records. Placental diagnoses were independently re-reviewed by a perinatal pathologist. Multivariable analyses adjusting for race, gestational weight gain, gestational age, and systolic blood pressure were conducted. RESULTS: Women with T1DM compared with either T2DM or GDM had higher gestational weight gain (mean ± SD, T1DM vs. T2DM: 28.5 ± 12.4 vs. 20.5 ± 13.4 kg, p = 0.03; or GDM: 21.3 ± 12.7 kg, p = 0.009) and insulin use (T2DM: 100.0% vs. 85.3%, p = 0.02; or GDM: 4.0%, p < 0.001). Women with T1DM compared with either T2DM or GDM also had a similarly lower prevalence of placental infarcts in univariate analyses; however, these findings did not remain significant after multivariable adjustment. Also, placentas from women with T2DM compared to GDM had higher rates of decidual vasculopathy when excluding women with preeclampsia (10.3 vs. 1.6%, p = 0.049) and diffuse chorangiosis (62.2 vs. 32.5%, p < 0.001) but a lower rate of villous immaturity (10.8 vs. 90.5%, p = 0.007) after full adjustment. DISCUSSION: Placental vasculopathic abnormalities differ by maternal diabetes type, potentially reflecting underlying pathophysiologic mechanisms. Further research on placental pathology and metabolic derangements is warranted.


Asunto(s)
Diabetes Gestacional/patología , Placenta/patología , Embarazo en Diabéticas/patología , Adulto , Diabetes Mellitus Tipo 1/patología , Diabetes Mellitus Tipo 1/fisiopatología , Diabetes Mellitus Tipo 2/patología , Diabetes Mellitus Tipo 2/fisiopatología , Diabetes Gestacional/fisiopatología , Femenino , Humanos , Placenta/irrigación sanguínea , Circulación Placentaria , Embarazo , Embarazo en Diabéticas/fisiopatología , Estudios Retrospectivos
7.
Clin Trials ; 10(1): 93-6, 2013 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-23169873

RESUMEN

BACKGROUND: Obtaining surrogate consent for clinical research studies conducted in the intensive care unit (ICU) setting is logistically challenging. PURPOSE: To determine whether differences in proportions consenting to trial enrollment existed among patients eligible to consent directly versus those requiring surrogate decision makers in a minimal-risk study to evaluate the accuracy of continuous glucose monitoring in the ICU setting. METHODS: Low initial enrollment rates prompted a detailed tracking of the screening and consent process. We analyzed the subset of eligible patients identified during a single year to document whether they were approached about trial enrollment, whether they consented or declined, the reasons for declining, and the method of consent (self or surrogate). The proportion of participants who consented and the reasons for declining were compared for self-consenting and surrogate-consenting participants. RESULTS: Of the 3041 patients screened, one-third (n = 982) were eligible; 119 of the 982 were approached regarding enrollment. Absence of a surrogate accounted for the majority of eligible patients (726; 84%) not approached. The most common reasons for refusal in the self versus surrogate groups included feeling overwhelmed (13% vs 24%), fear of discomfort (22% vs 12%), and fear of risk (7% vs 4%). Of the 57 eligible patients capable of consenting directly, 11 (19%) enrolled versus 12 (19%) of the 62 who required surrogate consent. When recruitment hours were expanded to include evening time, more eligible patients or their surrogates could be approached than during the day-shift hours alone. Consent was obtained for a larger proportion of potential participants with a history of diabetes (40%) than for those without a history of diabetes (14%). LIMITATIONS: The findings are from a subset of the entire study sample; data were available only for participants who could be approached, who may have differed from those who could not be approached. CONCLUSIONS: Surrogate and self-consent rates were similar. Surrogate unavailability was a major barrier to enrollment; overlap of staffing with usual visiting hours should be considered when planning trials in the ICU.


Asunto(s)
Investigación Biomédica/métodos , Diabetes Mellitus/tratamiento farmacológico , Glucosa/administración & dosificación , Unidades de Cuidados Intensivos/estadística & datos numéricos , Tutores Legales , Consentimiento por Terceros/estadística & datos numéricos , Adulto , Anciano , Anciano de 80 o más Años , Femenino , Humanos , Masculino , Massachusetts , Persona de Mediana Edad , Adulto Joven
8.
Diabetes Res Clin Pract ; 98(2): 249-56, 2012 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-23036785

RESUMEN

AIM: To determine whether inpatient diabetes management and education with improved transition to outpatient care (IDMET) improves glycemic control after hospital discharge in patients with uncontrolled type 2 diabetes (T2DM). METHODS: Adult inpatients with T2DM and HbA1c > 7.5% (58 mmol/mol) admitted for reasons other than diabetes to an academic medical center were randomly assigned to either IDMET or usual care (UC). Linear mixed models estimated treatment-dependent differences in the change in HbA1c (measured at 3, 6, and 12 months) from baseline to 1-year follow-up. RESULTS: Thirty-one subjects had mean age 55 ± 12.6 years, with mean HbA1c of 9.7 ± 1.6% (82 ± 18 mmol/mol). Mean inpatient glucose was lower in the IDMET than in the UC group (176 ± 66 versus 195 ± 74 mg/dl [9.7 versus 10.8 mmol/l], P = 0.001). In the year after discharge, the average HbA1c reduction was greater in the IDMET group compared with the UC group by 0.6% (SE 0.5%, [7 (SE 5)mmol/mol], P = 0.3). Among patients newly discharged on insulin, the average HbA1c reduction was greater in the in the IDMET group than in the UC group by 2.4% (SE 1.0%, [25 (SE 11)mmol/mol], P = 0.04). CONCLUSIONS: Inpatient diabetes management (IDMET) substantially improved glycemic control 1 year after discharge in patients newly discharged on insulin; patients previously treated with insulin did not benefit.


Asunto(s)
Diabetes Mellitus Tipo 2/sangre , Diabetes Mellitus Tipo 2/tratamiento farmacológico , Adulto , Anciano , Glucemia/efectos de los fármacos , Femenino , Hemoglobina Glucada/metabolismo , Humanos , Hipoglucemiantes/uso terapéutico , Pacientes Internos/estadística & datos numéricos , Insulina/uso terapéutico , Masculino , Persona de Mediana Edad , Alta del Paciente
9.
J Clin Endocrinol Metab ; 97(7): E1160-4, 2012 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-22492874

RESUMEN

CONTEXT: Timing and cause of pregnancy loss differ between type 1 (T1DM) and type 2 diabetes mellitus (T2DM). OBJECTIVE: The objective of the study was to determine whether placental histology corresponds to differing causes of pregnancy loss in T1DM and T2DM. We hypothesized that placentas from mothers with T2DM would be more likely to demonstrate vascular pathology than those from mothers with T1DM. RESEARCH DESIGN/SETTING/PARTICIPANTS: We reviewed medical histories, pregnancy outcomes, and placental histology of women with pregestational T1DM and T2DM with singleton pregnancies between 2001 and 2009 at a single tertiary care medical center. MAIN OUTCOME MEASURES: Placental weight, placental dysmaturity, villous maturation, villitis of unclear etiology, and histological evidence of placental infarction were measured. RESULTS: Ninety-eight placentas were available for review, 53 from T1DM mothers (56%) and 45 from T2DM mothers (46%). Mean age and glycemic control each trimester did not differ between diabetes types. T2DM placentas had a higher prevalence of placental infarcts (22 vs. 6%, P = 0.02) and a lower prevalence of placental dysmaturity (12 vs. 29%, P = 0.05) compared with T1DM; rates differed from those reported in the general population. There was no difference in placental weight, villous maturity, or villitis of unclear etiology between diabetes types. CONCLUSIONS: There were many similarities in placental histological findings between diabetes types. Still, one in five T2DM placentas displayed histological infarcts, consistent with a vascular, rather than glycemic, etiology of pregnancy complications, whereas T1DM placentas showed signs of abnormal development.


Asunto(s)
Diabetes Mellitus Tipo 1/epidemiología , Diabetes Mellitus Tipo 2/epidemiología , Infarto/epidemiología , Placenta/irrigación sanguínea , Embarazo en Diabéticas/epidemiología , Adulto , Diabetes Mellitus Tipo 1/complicaciones , Diabetes Mellitus Tipo 2/complicaciones , Diabetes Gestacional/epidemiología , Femenino , Humanos , Infarto/etiología , Enfermedades Placentarias/epidemiología , Enfermedades Placentarias/etiología , Embarazo , Complicaciones Cardiovasculares del Embarazo/epidemiología , Complicaciones Cardiovasculares del Embarazo/etiología , Resultado del Embarazo/epidemiología , Prevalencia , Estudios Retrospectivos
10.
Clin Trials ; 9(2): 198-203, 2012 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-22308560

RESUMEN

INTRODUCTION: Screening and recruitment for clinical trials can be costly and time-consuming. Inpatient trials present additional challenges because enrollment is time sensitive based on length of stay. We hypothesized that using an automated prescreening algorithm to identify eligible subjects would increase screening efficiency and enrollment and be cost-effective compared to manual review of a daily admission list. METHODS: Using a before-and-after design, we compared time spent screening, number of patients screened, enrollment rate, and cost-effectiveness of each screening method in an inpatient diabetes trial conducted at Massachusetts General Hospital. Manual chart review (CR) involved reviewing a daily list of admitted patients to identify eligible subjects. The automated prescreening (APS) method used an algorithm to generate a daily list of patients with glucose levels ≥ 180 mg/dL, an insulin order, and/or admission diagnosis of diabetes mellitus. The census generated was then manually screened to confirm eligibility and eliminate patients who met our exclusion criteria. We determined rates of screening and enrollment and cost-effectiveness of each method based on study sample size. RESULTS: Total screening time (prescreening and screening) decreased from 4 to 2 h, allowing subjects to be approached earlier in the course of the hospital stay. The average number of patients prescreened per day increased from 13 ± 4 to 30 ± 16 (P < 0.0001). Rate of enrollment increased from 0.17 to 0.32 patients per screening day. Developing the computer algorithm added a fixed cost of US$3000 to the study. Based on our screening and enrollment rates, the algorithm was cost-neutral after enrolling 12 patients. Larger sample sizes further favored screening with an algorithm. By contrast, higher recruitment rates favored individual CR. LIMITATIONS: Because of the before-and-after design of this study, it is possible that unmeasured factors contributed to increased enrollment. CONCLUSION: Using a computer algorithm to identify eligible patients for a clinical trial in the inpatient setting increased the number of patients screened and enrolled, decreased the time required to enroll them, and was less expensive. Upfront investment in developing a computerized algorithm to improve screening may be cost-effective even for relatively small trials, especially when the recruitment rate is expected to be low.


Asunto(s)
Algoritmos , Automatización/economía , Ensayos Clínicos como Asunto , Pacientes Internos , Selección de Paciente , Análisis Costo-Beneficio , Eficiencia Organizacional , Hospitales Generales , Humanos , Massachusetts
11.
Int Rev Neurobiol ; 92: 69-86, 2010.
Artículo en Inglés | MEDLINE | ID: mdl-20870063

RESUMEN

We review the literature on the neurobiology of rapid eye movement (REM) and non-rapid eye movement (NREM) sleep states and associated dreams. REM is associated with enhanced activation of limbic and amygdalar networks and decreased activation in dorsal prefrontal regions while stage II NREM is associated with greater cortical activation than REM. Not surprisingly, these disparate brain activation patterns tend to be associated with dramatically different dream phenomenologies and dream content. We present two recent studies which content-analyzed hundreds of dream reports from REM and NREM sleep states. These studies demonstrated that dreamer-initiated aggressive social interactions were more characteristic of REM than NREM, and dreamer-initiated friendliness was more characteristic of NREM than REM reports. Both REM and NREM dreams therefore may function to simulate opposing types of social interactions, with the REM state specializing in simulation of aggressive interactions and the NREM state specializing in simulation of friendly interactions. We close our review with a summary of evidence that dream content variables significantly predict daytime mood and social interactions.


Asunto(s)
Sueños/psicología , Procesos Mentales/fisiología , Sueño REM/fisiología , Sueño/fisiología , Conducta Social , Sueños/fisiología , Humanos
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