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1.
J Gen Intern Med ; 37(1): 137-144, 2022 01.
Artículo en Inglés | MEDLINE | ID: mdl-33907982

RESUMEN

BACKGROUND: Lack of timely follow-up of abnormal test results is common and has been implicated in missed or delayed diagnosis, resulting in potential for patient harm. OBJECTIVE: As part of a larger project to implement change strategies to improve follow-up of diagnostic test results, this study sought to identify specifically where implementation gaps exist, as well as possible solutions identified by front-line staff. DESIGN: We used a semi-structured interview guide to collect qualitative data from Veterans Affairs (VA) facility staff who had experience with test results management and patient safety. SETTING: Twelve VA facilities across the USA. PARTICIPANTS: Facility staff members (n = 27), including clinicians, lab and imaging professionals, nursing staff, patient safety professionals, and leadership. APPROACH: We conducted a content analysis of interview transcripts to identify perceived barriers and high-risk areas for effective test result management, as well as recommendations for improvement. RESULTS: We identified seven themes to guide further development of interventions to improve test result follow-up. Themes related to trainees, incidental findings, tracking systems for electronic health record notifications, outdated contact information, referrals, backup or covering providers, and responsibility for test results pending at discharge. Participants provided recommendations for improvement within each theme. CONCLUSIONS: Perceived barriers and recommendations for improving test result follow-up often reflected previously known problems and their corresponding solutions, which have not been consistently implemented in practice. Better policy solutions and improvement methods, such as quality improvement collaboratives, may bridge the implementation gaps between knowledge and practice.


Asunto(s)
Registros Electrónicos de Salud , Mejoramiento de la Calidad , Humanos , Liderazgo , Investigación Cualitativa
2.
Int J Qual Health Care ; 34(3)2022 Sep 10.
Artículo en Inglés | MEDLINE | ID: mdl-36047352

RESUMEN

Despite the high frequency of diagnostic errors, multiple barriers, including measurement, make it difficult learn from these events. This article discusses Measure Dx, a new resource from the Agency for Healthcare Research and Quality that translates knowledge from diagnostic safety measurement research into actionable recommendations. Measure Dx guides healthcare organizations to detect, analyze, and learn from diagnostic safety events as part of a continuous learning and feedback cycle. Wider adoption of Measure Dx, along with the implementation of solutions that result, can advance new frontiers in reducing preventable diagnostic harm to patients.


Asunto(s)
Errores Diagnósticos , Seguridad del Paciente , Diagnóstico Tardío , Errores Diagnósticos/prevención & control , Humanos
3.
J Psychosoc Oncol ; 39(2): 268-284, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-33306007

RESUMEN

OBJECTIVE: This study assessed the needs and perspective of (1) couples and (2) spouses/partners when considering fertility preservation after a cancer diagnosis. RESEARCH APPROACH: Semi-structured interviews explored (1) couples' shared decision-making and (2) spouses'/partners' individual perspectives. PARTICIPANTS: Twelve female cancer survivors and their partners (spouses or domestic/romantic partners) (n = 24). METHODOLOGICAL APPROACH: Dyadic and individual interviews were conducted using a Decisional Needs Assessment interview guide. Thematic analysis identified key themes. FINDINGS: Couples reported making fertility preservation decisions like other major decisions, including prioritizing mutual satisfaction. Partners also reported concerns about patients' health, variable decision-making needs, and letting patients lead. Couples unanimously recommended fertility preservation consultations, and designing resources that provide information and assess needs for both patients and partners. INTERPRETATIONS: Patients and partners have shared and unique needs when facing fertility preservation decisions. IMPLICATIONS FOR PSYCHOSOCIAL PROVIDERS OR POLICY: Whenever feasible, psychosocial providers should assess and address couples' and partners' fertility preservation decision-making needs.


Asunto(s)
Toma de Decisiones , Preservación de la Fertilidad/psicología , Relaciones Interpersonales , Neoplasias/terapia , Esposos/psicología , Adolescente , Adulto , Supervivientes de Cáncer/psicología , Supervivientes de Cáncer/estadística & datos numéricos , Femenino , Humanos , Masculino , Persona de Mediana Edad , Investigación Cualitativa , Esposos/estadística & datos numéricos , Adulto Joven
4.
Transfusion ; 60(3): 575-581, 2020 03.
Artículo en Inglés | MEDLINE | ID: mdl-31975416

RESUMEN

BACKGROUND: Administering lower total product volumes with high nucleated cell (NC) concentrations may have the potential benefit of decreasing volume- and dimethyl sulfoxide (DMSO)-related patient complications, while maximizing the laboratory's freezer storage capacity. Our study is a retrospective investigation of the effect of HPC(A) products with cell concentrations greater than 3 × 108 NC/mL on clinical and product outcomes in patients undergoing autologous peripheral blood stem cell (PBSC) transplantation. STUDY DESIGN AND METHODS: A total of 113 consecutive patients with hematological malignancies who underwent autologous PBSC transplantation were included in this retrospective analysis. The primary outcomes were days to initial absolute neutrophil count (ANC) recovery and initial platelet recovery. The secondary outcomes included the storage duration, segment thaw viability, and dose of viable CD34+ cells/kg administered. RESULTS: Of 92 patients and 176 apheresis procedures, 81 patients received HPC(A) products with high NC concentration (4.1 × 108 NC/mL), and 11 patients received low NC concentration products (2.4 × 108 NC/mL). There were no observed differences in clinical outcomes with respect to ANC recovery (14 vs. 14 vs. 12 days) and platelet recovery (16 vs. 16 vs. 15 days) when very high NC (5.2 × 108 NC/mL) and high NC (4.1 × 108 NC/mL) groups were compared to the low NC group (2.4 × 108 NC/mL). CONCLUSION: Our retrospective investigation provides further supporting evidence that HPC(A) products with cell concentration greater than 3 × 108 NC/mL did not show detrimental effects on the clinical outcomes in patients undergoing autologous PBSC transplantation.


Asunto(s)
Trasplante de Células Madre de Sangre Periférica/métodos , Trasplante Autólogo/métodos , Adulto , Anciano , Eliminación de Componentes Sanguíneos/métodos , Criopreservación , Femenino , Neoplasias Hematológicas/terapia , Humanos , Modelos Lineales , Masculino , Persona de Mediana Edad , Estudios Retrospectivos
5.
J Clin Psychol Med Settings ; 27(3): 432, 2020 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-32797329

RESUMEN

Due to a publishing error, an article referred to here that was intended for the special section Advances in Gastroenterology was inadvertently published in the previous issue, Volume 27, Issue 2.

6.
J Environ Manage ; 231: 98-109, 2019 Feb 01.
Artículo en Inglés | MEDLINE | ID: mdl-30340137

RESUMEN

A comparative cradle-to-grave life cycle assessment (LCA) of a low-impact-development (LID) parking lot test-site is performed to quantify the environmental costs of the manufacturing, construction, transportation, operation, maintenance and decommissioning of three bioretention cells and three permeable pavement systems (PPS) located in Mississauga, Ontario, as well as a hypothetical stormwater management pond. The LIDs' influent and effluent water quality and volume data is used to quantify the environmental benefits offered by the LIDs. Ecoinvent v3 LCA database is utilized to create an inventory of the materials and energy used during the life cycle of the LIDs. Using TRACI 2.1 impact assessment method, an LCA is conducted to simulate impacts on ten midpoint categories using a functional unit of "1 m2 of impervious area treated". It has been found that manufacturing of raw materials has the largest impact (∼50%) on ozone depletion, global warming, smog potential, acidification, carcinogenic emissions, respiratory effects and fossil fuel depletion. The LIDs offer a significant avoidance of eutrophication potential, non-carcinogenic emissions and ecotoxicity, which are all mostly associated with the water quality benefits offered by the LIDs. The bioretention impacts are ∼90% lower than the PPS' on a "per 1 m2 of impervious area treated" basis due to its larger impervious area treatment relative to its size compared to the PPS. The benefits offered by bioretention are significantly higher on "per 1 m2 LID area" basis (∼12x), but comparable on "per 1 m2 impervious area treated" basis. The impacts normalized by per-capita emissions in Canada in the year 2005 show that the negative impacts of the LIDs are insignificant compared to the benefits they provide. A comparison of the LIDs to a traditional pipe-and-pond infrastructure of an equivalent treatment capacity reveals that the cradle-to-grave impacts of LIDs are ∼20% lower compared to the detention pond's, and the benefits accrued by the LIDs are ∼300% higher compared to the detention pond, making a strong case for the selection of LIDs over traditional stormwater management practices.


Asunto(s)
Ambiente , Eutrofización , Combustibles Fósiles , Calentamiento Global , Ontario
8.
Clin Gastroenterol Hepatol ; 16(1): 7-15, 2018 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-28529169

RESUMEN

Inflammatory bowel disease (IBD) is a chronic condition that has a relapsing and remitting disease course. There is high degree of inpatient and outpatient health care utilization by IBD patients along with a great deal of psychosocial stress associated with the condition. Patients frequently rely on family, friends, and other informal caregivers to provide medical, instrumental, and emotional support. The role of caregiving for adult IBD patients can lead to significant caregiver burden. At present, there are limited data on the existence of caregiver burden in adult IBD patients. Moreover, there are no specific measures for evaluating caregiver burden and there are no interventions targeting caregiver burden in adults with IBD. This review outlines the limited available data on caregiver burden in IBD, explores caregiver burden in other chronic conditions, and proposes applications of these data for creating screening and assessment tools and interventions for caregiver burden in IBD.


Asunto(s)
Cuidadores , Costo de Enfermedad , Enfermedades Inflamatorias del Intestino/psicología , Enfermedades Inflamatorias del Intestino/terapia , Adulto , Humanos , Aceptación de la Atención de Salud , Estrés Psicológico
9.
Gynecol Oncol ; 150(1): 79-84, 2018 07.
Artículo en Inglés | MEDLINE | ID: mdl-29735278

RESUMEN

OBJECTIVE: Risk-reducing salpingo-oophorectomy (RRSO) reduces ovarian cancer risk in BRCA1/2 mutation carriers, but the adverse effects of the associated early-onset surgical menopause are problematic. Despite suggestive evidence, no data demonstrate whether bilateral salpingectomy alone lowers the risk of developing ovarian cancer in BRCA mutation carriers. We conducted a pilot study of bilateral salpingectomy with delayed oophorectomy (BS/DO) in BRCA mutation carriers to determine the safety and acceptability of the procedure. METHODS: In this prospective, multicenter, non-randomized pilot study, pre-menopausal BRCA1/2 mutation carriers aged 30 to 47 years chose screening, RRSO, or BS/DO. For those undergoing BS/DO, the delayed oophorectomy was recommended at age 40 years for BRCA1 and age 45 years for BRCA2 patients. We compared surgical and psychosocial outcomes between time points and between arms. RESULTS: Of the 43 patients enrolled, 19 (44%) chose BS/DO, 12 (28%) chose RRSO, and 12 (28%) chose screening. The cohort was 37% BRCA1 carriers and 63% BRCA2 carriers. One serous tubal intraepithelial carcinoma (STIC) was found in an RRSO patient, and no cases of occult ovarian cancers were found. There were no surgical complications. Twelve months after surgery, responses on the Cancer Worry Scale indicated decreased worry in the BS/DO (P < 0.0001) and RRSO (P = 0.01) arms, while responses on the State Anxiety Inventory indicated decreased anxiety in the BS/DO arm (P = 0.02) compared with preoperative responses. CONCLUSIONS: In this pilot study, BRCA mutation carriers who underwent bilateral salpingectomy had no intraoperative complications, were satisfied with their procedure choice, and had decreased cancer worry and anxiety after the procedure.


Asunto(s)
Proteína BRCA1/genética , Proteína BRCA2/genética , Neoplasias Ováricas/genética , Neoplasias Ováricas/cirugía , Ovariectomía/métodos , Salpingectomía/métodos , Proteína BRCA1/metabolismo , Proteína BRCA2/metabolismo , Femenino , Humanos , Neoplasias Ováricas/patología , Proyectos Piloto , Estudios Prospectivos , Conducta de Reducción del Riesgo
10.
Dig Dis Sci ; 63(9): 2189-2201, 2018 09.
Artículo en Inglés | MEDLINE | ID: mdl-29744772

RESUMEN

BACKGROUND: Psychological treatments are efficacious for irritable bowel syndrome (IBS) in clinical trials; however, their effectiveness when conducted in gastroenterology practice settings is unclear. AIM: To perform a systematic review of the types and effects of psychological treatments for IBS conducted in gastroenterology clinics. METHODS: We searched PubMed, EMBASE, and Cochrane central register. Studies conducted in gastroenterology clinic settings with IBS patients who were clinically referred from gastroenterology were included. RESULTS: We identified 3078 citations, of which only eight studies were eligible. Seven studies compared psychological treatments (average n = 25.7; range 12-43) to controls (average n = 25.4 patients; range 12-47), whereas one study compared two active "bonafide" interventions. Psychological treatments varied (cognitive-behavioral therapy, guided affective imagery, mindfulness, hypnosis, biofeedback, emotional awareness training). However, across approaches, short-term benefits were seen. IBS symptoms improved significantly among patients in cognitive and behavioral therapies, mindfulness-based stress reduction, guided affective imagery, and emotional awareness training compared with controls; there was a similar trend for gut-directed hypnotherapy. Similarly, IBS symptoms improved in a study of two active biofeedback and hypnosis treatments. CONCLUSIONS: Evidence for the effectiveness of psychological treatment in gastroenterology practice is promising but limited. Study designs that involve a blending of efficacy and effectiveness components are needed.


Asunto(s)
Gastroenterología/métodos , Hipnosis/métodos , Síndrome del Colon Irritable/psicología , Síndrome del Colon Irritable/terapia , Atención Plena/métodos , Ensayos Clínicos como Asunto/métodos , Gastroenterología/tendencias , Humanos , Atención Plena/tendencias , Psicoterapia/métodos , Psicoterapia/tendencias , Resultado del Tratamiento
12.
J Clin Psychol Med Settings ; 30(1): 1-2, 2023 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-36862246
13.
J Sex Med ; 14(12): 1463-1491, 2017 12.
Artículo en Inglés | MEDLINE | ID: mdl-29198504

RESUMEN

INTRODUCTION: Since the millennium we have witnessed significant strides in the science and treatment of female sexual dysfunction (FSD). This forward progress has included (i) the development of new theoretical models to describe healthy and dysfunctional sexual responses in women; (ii) alternative classification strategies of female sexual disorders; (iii) major advances in brain, hormonal, psychological, and interpersonal research focusing on etiologic factors and treatment approaches; (iv) strong and effective public advocacy for FSD; and (v) greater educational awareness of the impact of FSD on the woman and her partner. AIMS: To review the literature and describe the best practices for assessing and treating women with hypoactive sexual desire disorder, female sexual arousal disorder, and female orgasmic disorders. METHODS: The committee undertook a comprehensive review of the literature and discussion among themselves to determine the best assessment and treatment methods. RESULTS: Using a biopsychosocial lens, the committee presents recommendations (with levels of evidence) for assessment and treatment of hypoactive sexual desire disorder, female sexual arousal disorder, and female orgasmic disorders. CONCLUSION: The numerous significant strides in FSD that have occurred since the previous International Consultation of Sexual Medicine publications are reviewed in this article. Although evidence supports an integrated biopsychosocial approach to assessment and treatment of these disorders, the biological and psychological factors are artificially separated for review purposes. We recognize that best outcomes are achieved when all relevant factors are identified and addressed by the clinician and patient working together in concert (the sum is greater than the whole of its parts). Kingsberg SA, Althof S, Simon JA, et al. Female Sexual Dysfunction-Medical and Psychological Treatments, Committee 14. J Sex Med 2017;14:1463-1491.


Asunto(s)
Psicoterapia/organización & administración , Disfunciones Sexuales Psicológicas/terapia , Comités Consultivos/normas , Femenino , Humanos , Masculino , Orgasmo , Psicoterapia/normas , Conducta Sexual/psicología , Disfunciones Sexuales Psicológicas/psicología
15.
Gynecol Oncol ; 143(3): 589-595, 2016 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-27678296

RESUMEN

OBJECTIVE: Sexual dysfunction is common in endometrial cancer survivors (ECS). Our group previously tested a six-month exercise intervention in ECS. We performed a secondary analysis to determine intervention's impact on sexual health. METHODS: We studied 100 post-treatment Stage I-IIIa sedentary ECS who participated in a non-controlled, single-arm, home-based exercise intervention utilizing telephone counseling, printed material, and pedometers. Quality-of-life and physical activity measures were collected at baseline and six months. Sexual function (SF) and sexual interest (SI) scores were extracted from the QLACS questionnaire. RESULTS: Baseline SF and SI were lower in survivors with less than a four-year college degree (P<0.001). Baseline SI was higher in survivors who were married or living with a significant other (P=0.012). No significant differences in SF or SI were observed based on obesity status, race, time since diagnosis, or treatment type. Post-intervention, mean SF score improved (P=0.002), 51% of participants had improved SI, and 43% had improved SF. When controlled for age and time since diagnosis, a one-hour increase in weekly physical activity was associated with a 6.5% increased likelihood of improved SI (P=0.04). Increased physical activity was not associated with improved SF. CONCLUSIONS: Although causation cannot be determined in this study, the correlation between receipt of an exercise intervention and improved sexual health for ECS is a novel finding. This finding suggests a role for physical activity as a strategy to improve the sexual health of ECS, which our group is examining in a larger prospective study.


Asunto(s)
Neoplasias Endometriales , Ejercicio Físico , Salud Reproductiva , Sobrevivientes , Adulto , Anciano , Estudios de Cohortes , Escolaridad , Femenino , Humanos , Estado Civil , Persona de Mediana Edad , Calidad de Vida , Características de la Residencia , Estudios Retrospectivos , Encuestas y Cuestionarios
16.
Am J Public Health ; 106(8): 1427-9, 2016 08.
Artículo en Inglés | MEDLINE | ID: mdl-27196642

RESUMEN

We examined the benefits of a collaboration between the Indian Health Service and an academic medical center to address the high rates of unintentional drug overdose in American Indians/Alaska Natives. In January 2015, the Indian Health Service became the first federal agency to mandate training in pain and opioid substance use disorder for all prescribing clinicians. More than 1300 Indian Health Service clinicians were trained in 7 possible 5-hour courses specific to pain and addiction. We noted positive changes in pre- and postcourse knowledge, self-efficacy, and attitudes as well as thematic responses showing the trainings to be comprehensive, interactive, and convenient.


Asunto(s)
Analgésicos Opioides/uso terapéutico , Educación Médica Continua/organización & administración , Trastornos Relacionados con Opioides/etnología , Manejo del Dolor/métodos , United States Indian Health Service/organización & administración , Centros Médicos Académicos/organización & administración , Analgésicos Opioides/administración & dosificación , Analgésicos Opioides/efectos adversos , Actitud del Personal de Salud , Instrucción por Computador/métodos , Conducta Cooperativa , Conocimientos, Actitudes y Práctica en Salud , Humanos , Indígenas Norteamericanos , Inuk , Trastornos Relacionados con Opioides/diagnóstico , Trastornos Relacionados con Opioides/prevención & control , Pautas de la Práctica en Medicina , Autoeficacia , Estados Unidos
17.
J Pediatr ; 166(5): 1226-32, 2015 May.
Artículo en Inglés | MEDLINE | ID: mdl-25919732

RESUMEN

OBJECTIVE: To assess the rates and types of complications associated with deep sedation in children with sickle cell disease (SCD) and to explore potential risk factors. STUDY DESIGN: This was a retrospective cohort study of children with SCD and a comparison group of children without SCD who underwent magnetic resonance imaging with deep sedation. The rates of general and SCD-associated sedation complications were calculated, and potential associated clinical and laboratory variables were assessed. RESULTS: A total of 162 sedation records in 94 subjects with SCD and 324 sedation records in 321 subjects without SCD were assessed (mean age, 4.3 years in both groups). Pentobarbital, fentanyl, and midazolam were used in the majority of sedation episodes without routine presedation transfusion. Sedation-related complication rates did not differ significantly between the SCD and comparison groups. Within 1 month after the sedation procedure, 17 children (10%) experienced a vaso-occlusive pain episode (VOE), and 2 children (1.2%) developed acute chest syndrome. Preprocedure and postprocedure rates of these complications did not differ significantly. Subjects who developed VOE after sedation had a significantly higher VOE rate before sedation, but no other significant clinical or laboratory risk factors were identified. CONCLUSION: Deep sedation in young children with SCD using a standard protocol is safe, with a sedation-related complication rate comparable to that of the general pediatric population. The observed rate of VOE, although not significantly higher than expected, warrants further investigation.


Asunto(s)
Síndrome Torácico Agudo/etiología , Anemia de Células Falciformes/fisiopatología , Sedación Profunda/métodos , Dolor/etiología , Adyuvantes Anestésicos/efectos adversos , Anemia de Células Falciformes/complicaciones , Niño , Preescolar , Sedación Profunda/efectos adversos , Femenino , Fentanilo/efectos adversos , Humanos , Imagen por Resonancia Magnética , Masculino , Midazolam/efectos adversos , Seguridad del Paciente , Pentobarbital/efectos adversos , Estudios Retrospectivos , Factores de Riesgo
18.
Gynecol Oncol ; 139(1): 134-40, 2015 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-26325527

RESUMEN

BACKGROUND: Sexual dysfunction is a common long-term side effect of treatments for gynecologic cancer. Studies of sexual problems in gynecologic cancer survivors overrepresent White non-Hispanic, highly educated, and married women. Less is known about the sexual health needs of women in medically underserved populations. We therefore conducted a study to characterize sexual activity and sexual function in this population. METHODS: We recruited patients attending two gynecologic oncology clinics in a large public healthcare system that primarily serves uninsured and low-income patients. Participants were invited to complete a one-time survey to assess sexual function, sexual communication, sexual distress, relationship adjustment, depression, anxiety, prior help-seeking and help-seeking preferences, and reasons for sexual inactivity. Data were analyzed using descriptive statistics and multivariate models to predict sexual activity status and sexual dysfunction. RESULTS: Among 243 participants, the majority (n=160, 65.8%) were not sexually active in the past 4weeks, most often due to lack of a partner or lack of desire for sex. Just over one-fourth of sexually active participants were identified as likely cases of sexual dysfunction. Greater endorsement of depressive symptoms predicted both sexual inactivity and sexual dysfunction in multivariate analyses. Prior help-seeking for sexual problems was uncommon; however, a significant minority of participants expressed interest in receiving care for sexual problems. CONCLUSIONS: Gynecologic cancer survivors in our medically underserved population have high rates of sexual inactivity and sexual dysfunction. Future research should identify feasible strategies to address barriers to sexual healthcare in low-resource settings.


Asunto(s)
Neoplasias de los Genitales Femeninos/epidemiología , Área sin Atención Médica , Pobreza , Disfunciones Sexuales Fisiológicas/epidemiología , Estudios Transversales , Depresión/economía , Depresión/epidemiología , Depresión/psicología , Femenino , Neoplasias de los Genitales Femeninos/economía , Neoplasias de los Genitales Femeninos/psicología , Neoplasias de los Genitales Femeninos/terapia , Accesibilidad a los Servicios de Salud/economía , Humanos , Medicaid , Pacientes no Asegurados , Persona de Mediana Edad , Disfunciones Sexuales Fisiológicas/economía , Disfunciones Sexuales Fisiológicas/psicología , Disfunciones Sexuales Fisiológicas/terapia , Texas/epidemiología , Estados Unidos
19.
J Clin Psychol Med Settings ; 27(3): 429-431, 2020 09.
Artículo en Inglés | MEDLINE | ID: mdl-32712846
20.
J Environ Manage ; 139: 69-79, 2014 Jun 15.
Artículo en Inglés | MEDLINE | ID: mdl-24681366

RESUMEN

This study examined the spring, summer and fall water quality performance of three partial-infiltration permeable pavement (PP) systems and a conventional asphalt pavement in Ontario. The study, conducted between 2010 and 2012, compared the water quality of effluent from two Interlocking Permeable Concrete Pavements (AquaPave(®) and Eco-Optiloc(®)) and a Hydromedia(®) Pervious Concrete pavement with runoff from an Asphalt control pavement. The usage of permeable pavements can mitigate the impact of urbanization on receiving surface water systems through quantity control and stormwater treatment. The PP systems provided excellent stormwater treatment for petroleum hydrocarbons, total suspended solids, metals (copper, iron, manganese and zinc) and nutrients (total-nitrogen and total-phosphorus) by reducing event mean concentrations (EMC) as well as total pollutant loadings. The PPs significantly reduced the concentration and loading of ammonia (NH4(+)+NH3), nitrite (NO2(-)) and organic-nitrogen (Org-N) but increased the concentration and loading of nitrate (NO3(-)). The PP systems had mixed performances for the treatment of phosphate (PO4(3-)). The PP systems increased the concentration of sodium (Na) and chloride (Cl) but EMCs remained well below recommended levels for drinking water quality. Relative to the observed runoff, winter road salt was released more slowly from the PP systems resulting in elevated spring and early-summer Cl and Na concentrations in effluent. PP materials were found to introduce dissolved solids into the infiltrating stormwater. The release of these pollutants was verified by additional laboratory scale testing of the individual pavement and aggregate materials at the University of Guelph. Pollutant concentrations were greatest during the first few months after construction and declined rapidly over the course of the study.


Asunto(s)
Materiales de Construcción , Contaminantes Químicos del Agua/análisis , Amoníaco/análisis , Monitoreo del Ambiente , Hidrocarburos/análisis , Metales Pesados/análisis , Nitratos/análisis , Nitritos/análisis , Nitrógeno/análisis , Ontario , Permeabilidad , Petróleo , Fósforo/análisis , Lluvia , Estaciones del Año , Movimientos del Agua , Calidad del Agua
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