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1.
J Pharm Technol ; 38(6): 335-342, 2022 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-36311306

RESUMEN

Objective: Describes the activities of a clinical pharmacist in a gastroenterology (GI) clinic providing services to hepatitis C virus (HCV) patients, with a focus on practice management activities and tools. Practice Description: Located inside a GI specialty clinic in Fort Worth, Texas, the pharmacist provides comprehensive medication management under a collaborative practice agreement (CPA). Once referred by the GI physician, the pharmacist has face-to-face patient visits, develops the care plan, orders medications, and follows patients through sustained virologic response and the development of a hepatocellular carcinoma surveillance plan. Practice Innovation: The role of pharmacists in the management of HCV is important to understand. This article details a pharmacist-led clinic in an open GI medical practice. Evaluation: A retrospective chart review study was conducted to assess outcomes related to the integration of the clinical pharmacist. Methods: Completed by the study team, this study included manual chart reviews of patients with the ambulatory care pharmacist-driven HCV practice to pull data and information that were then tabulated using Qualtrics. Results: A total of 95 charts were surveyed, 78 records were created, and 49 patients were started on direct-acting antiviral (DAA) treatment by the pharmacist. Patients required multiple pharmacist communication actions. The minimum duration of the pharmacist service was 6 months and could extend more than 9 months depending on the time it took to get the patient started on medication. Pharmacist integration into the practice resulted in improved intake for the GI clinic, improved interprofessional interaction, and increased utilization of newer treatment modalities for HCV which feature cure rates up to 99% with limited side effects. Conclusion: Clinical pharmacists are well positioned to help navigate patients through the complexities of the medication use system, medication access, drug interactions and adverse effects, promote medication adherence, and allow patients to start and complete therapy.

2.
J Oncol Pharm Pract ; 27(5): 1094-1101, 2021 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-32819197

RESUMEN

BACKGROUND: Follow-up calls in the oncology setting are frequently used to augment care and encourage oral antineoplastic adherence. However, limited data are available on patient populations that would benefit from this intervention versus populations that may require alternative interventions. The purpose of this study was to identify characteristics among patients on oral antineoplastic agents that influence their likelihood to respond to follow-up calls. METHODS: Patients receiving care from one of the eight community oncology clinics within the same branch were analyzed. Patients were included if they were ≥18 years, received a new oral antineoplastic agent that was electronically prescribed between August 2018-October 2018, and picked up their first fill from their pharmacy of choice. Patients received up to six follow-up calls after picking up their first prescription. Calls were categorized as adherent (≥3 monthly interactions) or non-adherent (<3 monthly interactions). Logistic regression models were used to evaluate factors associated with follow-up call adherence. Factors included demographics, cancer stage, marital status, employment, pharmacy setting (internal pharmacy versus external pharmacy), and insurance used by the patient. Descriptive analysis was performed to analyze response rates, cancer diagnosis, and to determine the best time and day patients responded to follow-up calls. RESULTS: Data from 125 patients were analyzed, of which 65 patients (52%) were adherent to follow-up calls and the mean response rate over six months was 45% (range: 35% -- 54%). High success rates for follow-up calls were seen between 12-3 pm and on Tuesdays and Thursdays. After adjusting for covariates, patients with stage III-IV were 89% less likely to respond to follow-up calls compared to those with stage 0-II (95% CI: 0.02-0.64; p = 0.01), patients with commercial insurance were 79% less likely to adhere to follow-up calls compared to those on government insurance (95% CI: 0.06-0.71; p = 0.01), and patients using an external pharmacy had a 2.8 times increase odds of being adherent (95% CI 0.98-8.34; p = 0.05). All other factors were not significant. CONCLUSIONS: For patients taking oral antineoplastics, non-adherence to follow-up calls was observed in more than 45% of patients receiving care from a community oncology clinic. Findings demonstrated that those with advanced stages of cancer, on commercial insurance, and going to an internal pharmacy were at higher risk for not adhering to follow up calls. Therefore, alternative methods for managing adherence and side effects in these populations are warranted.


Asunto(s)
Antineoplásicos/uso terapéutico , Cumplimiento de la Medicación , Neoplasias/tratamiento farmacológico , Adulto , Anciano , Servicios de Salud Comunitaria , Femenino , Estudios de Seguimiento , Humanos , Modelos Logísticos , Masculino , Persona de Mediana Edad
3.
J Am Pharm Assoc (2003) ; 60(6): e113-e115, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-32839136

RESUMEN

In response to the coronavirus disease 2019 (COVID-19) pandemic, many industries, including pharmacy, rapidly expanded the use of telecommuting workers to assure business continuity and address social distancing needs. Advances in electronic health records and telepharmacy over the past 2 decades enabled pharmacy leaders to easily adapt their practice models to allow for telecommuting alternatives during the pandemic. While these changes were generally intended to be part of the short-term response, the sustained expansion of telecommuting within the pharmacy profession merits further exploration. Documented experience with telepharmacy and telehealth indicate a wide array of clinical and operational pharmacist activities that could be conducted by telecommuters. In addition, experience with telecommuters in other industries suggests potential benefits ranging from improving pharmacists' work-life balance to mitigating postpandemic financial burden. Health care organizations should consider integrating part-time telecommuter pharmacists into contemporary practice models to address other frontline issues and facilitate ongoing expansion of clinical pharmacy services to meet emerging patient needs.


Asunto(s)
Tratamiento Farmacológico de COVID-19 , Servicios Farmacéuticos/organización & administración , Farmacéuticos/organización & administración , Rol Profesional , Telecomunicaciones/organización & administración , Registros Electrónicos de Salud , Satisfacción en el Trabajo , Servicios Farmacéuticos/tendencias , Farmacéuticos/normas , SARS-CoV-2 , Telecomunicaciones/tendencias
4.
Ann Fam Med ; 17(5): 465, 2019 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-31501211
5.
Arch Toxicol ; 86(1): 121-35, 2012 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-21818627

RESUMEN

The normally picturesque Cache Valley in northern Utah is frequently reported to have the worst particulate (PM) air pollution in the United States. Numerous epidemiological studies conducted elsewhere have associated PM exposure to a variety of cardiovascular diseases and early mortality. We have previously shown that Cache Valley PM (CVPM) is pro-inflammatory, through a variety of mechanisms involving the release of inflammatory cytokines, unfolded protein response, ER stress, and C-reactive protein (CRP). This study was undertaken to determine whether Cache Valley PM (CVPM) would activate Akt, an upstream mechanism common to these events. Human lung (BEAS-2B) cells were treated with either fine (PM(2.5)) or coarse (PM(10)) particles (12.5 and 25 µg/ml) for periods up to 24 h. PM-exposed cells exhibited Akt activation as evidenced by phosphorylation at Thr(308) and Ser(473). Events downstream of Akt activation such as NF-κB activation were observed at 1 and 24 h, but IκB phosphorylation occurred only at 24 h, indicating that mechanisms of PM-mediated NF-κB activation are time dependent. Akt and NF-κB related inflammatory cytokine IL-1α, and IL-6 and the chemokine IL-8 were upregulated in treated cells at 6 and 24 h. The calpain inhibitor leupeptin limited Akt phosphorylation to Ser(473) and reduced release of IL-1α, IL-6, and IL-8, indicating that calpain or similar protease(s) are involved in PM-induced activation of Akt and subsequent release of inflammatory cytokines. Our data indicate that PM activates Akt, which may play a role in the pro-inflammatory response to PM exposure.


Asunto(s)
Inflamación/inducido químicamente , Pulmón/efectos de los fármacos , Material Particulado/toxicidad , Proteínas Proto-Oncogénicas c-akt/efectos de los fármacos , Línea Celular , Células Epiteliales/efectos de los fármacos , Células Epiteliales/metabolismo , Humanos , Inflamación/patología , Interleucina-1alfa/metabolismo , Interleucina-6/metabolismo , Interleucina-8/metabolismo , Pulmón/citología , Pulmón/metabolismo , FN-kappa B/efectos de los fármacos , FN-kappa B/metabolismo , Tamaño de la Partícula , Fosforilación/efectos de los fármacos , Proteínas Proto-Oncogénicas c-akt/metabolismo , Factores de Tiempo , Regulación hacia Arriba/efectos de los fármacos , Salud Urbana , Utah
6.
Curr Pharm Teach Learn ; 12(12): 1491-1497, 2020 12.
Artículo en Inglés | MEDLINE | ID: mdl-33092780

RESUMEN

INTRODUCTION: Test anxiety is well studied in higher education, but studies primarily concern traditional assessments, such as written examinations. As use of objective structured clinical examination (OSCE) in pharmacy education increases, a closer examination of non-cognitive factors such as test anxiety is warranted. The purpose of this review was to determine the association between OSCE-associated test anxiety with OSCE performance in health professional students. METHODS: A literature search was conducted to identify peer-reviewed literature concerning test anxiety in health professional students associated with OSCE. Investigators searched for a combination of OSCE-related terms with anxiety-related terms using PubMed. Articles were included if they assessed OSCE-related anxiety by quantitative or qualitative methods. Data extracted from eligible articles included demographic data, type of the anxiety survey, associations between OSCE-related anxiety and performance, and other student-factors associated with OSCE-related anxiety. RESULTS: The literature search yielded 339 articles. Nine articles met eligibility criteria and were included in the review. Results included students from medical, pharmacy, dental, and nursing professional programs. Anxiety was assessed via multiple scales. Six out of the eight studies assessing the relationship OSCE-related anxiety and OSCE performance found no association between the two measures. Contrary to literature concerning test anxiety in higher education, female gender was not associated with OSCE-related anxiety. CONCLUSION: OSCE-related anxiety appears to have minimal to no influence on student performance. Future studies should utilize standardized anxiety assessments and should seek to understand anxiety's effects on student wellbeing and burnout.


Asunto(s)
Competencia Clínica , Evaluación Educacional , Ansiedad , Femenino , Humanos , Examen Físico , Estudiantes
7.
Am J Health Syst Pharm ; 77(23): 1973-1979, 2020 11 16.
Artículo en Inglés | MEDLINE | ID: mdl-32995845

RESUMEN

PURPOSE: The purpose of this study was to evaluate the financial performance and reimbursement of chronic care management (CCM) provided by clinical pharmacists in a primary care setting using Current Procedural Terminology codes that were added to the Medicare Physician Fee Schedule in 2017. METHODS: A retrospective study assessing financial performance of pharmacist-led CCM was conducted for the 12-month period from May 1, 2018, through April 30, 2019, at an academic multiclinic medical practice. Pharmacist-led CCM encounters included a combination of telephone and in-clinic visits. Return on investment, a ratio of net income to financial investment, was the primary outcome. Secondary outcomes included the number of CCM encounters, time spent by pharmacists delivering CCM (ie, "time-on-task"), and third-party claim reimbursement. RESULT: Sixty-five patients were enrolled in CCM during the 12-month study period. Pharmacists provided 236 CCM encounters, including 31 enrollment visits and 102 hours of clinical time-on-task. Gross revenue for CCM during the 12-month period was $7,433.91, and expenses totaled $6,430.36, resulting in a 15.6% return on investment. Out of 158 CCM claims, 131 (83%) were paid and 27 (17%) were unpaid or remained in adjudication at study completion. CONCLUSION: Pharmacist-led CCM resulted in a modest positive return on investment compared to other reimbursable pharmacy services. Practitioners should evaluate opportunities to synergize CCM with other fee-for-service and quality-based reimbursement programs.


Asunto(s)
Medicare/economía , Servicios Farmacéuticos/organización & administración , Farmacéuticos/organización & administración , Atención Primaria de Salud/organización & administración , Enfermedad Crónica/economía , Enfermedad Crónica/terapia , Current Procedural Terminology , Humanos , Servicios Farmacéuticos/economía , Farmacéuticos/economía , Atención Primaria de Salud/economía , Rol Profesional , Mecanismo de Reembolso , Estudios Retrospectivos , Factores de Tiempo , Estados Unidos
8.
Am J Pharm Educ ; 84(4): 7625, 2020 04.
Artículo en Inglés | MEDLINE | ID: mdl-32431310

RESUMEN

Objective. To evaluate the use of an objective structured clinical examinations (OSCE) to assess clinical competency acquired during an off-campus introductory pharmacy practice experience (IPPE). Methods. Third-year pharmacy students completed an IPPE in transitions of care and completed 24 experiential contact hours at one of 17 practice sites. Students were assessed using two OSCEs, the first occurring prior to beginning an off-site IPPE (pre-experience OSCE) and the second occurring after completion of the off-site IPPE (post-experience OSCE). Each OSCE consisted of 10 stations and covered five graded competency domains. The primary outcome was the degree of change in student performance from the pre-experience OSCE to the post-experience OSCE. Secondary outcomes included changes in each graded domain, OSCE pass rate, and failure conversion rate. Results. Of 111 students, 109 completed both the pre- and post-experience OSCE. Significant improvements were observed in overall score and cohort pass rate. Overall scores improved from 80 for the pre-experience OSCE to 87 for the post-experience OSCE. The OSCE pass rate also improved from 47% to 84%. Conclusion. Although preceptor evaluations have traditionally served as the primary summative assessment for IPPE and APPE, this study indicates that OSCEs may be a reliable alternative to assess clinical competency acquired from off-site practice experiences.


Asunto(s)
Competencia Clínica , Educación Basada en Competencias , Educación en Farmacia , Evaluación Educacional , Aprendizaje Basado en Problemas , Estudiantes de Farmacia , Adulto , Escolaridad , Femenino , Humanos , Masculino , Preceptoría , Adulto Joven
9.
Am J Pharm Educ ; 84(2): 7473, 2020 02.
Artículo en Inglés | MEDLINE | ID: mdl-32226068

RESUMEN

Objective. To revise a traditional sterile compounding course to include content, competencies, and immersive simulations relevant to the current practice of sterile compounding pharmacy. Methods. Faculty and staff at the University of North Texas System College of Pharmacy made significant revisions to an existing sterile compounding course. Instruction was provided in didactic and laboratory sessions and delivered in three modules: fundamental skills, integration of skills and knowledge, and exceptions and specialty topics. Integration laboratory sessions consisted primarily of repetitive but increasingly difficult simulations that included both technician and pharmacist activities. Assessment methods included checkpoint assessments, a mock objective structured clinical examination (OSCE), a written examination, and a final comprehensive OSCE. Effectiveness of the course redesign was assessed by comparing student performance on assessments, overall course performance, and student perceptions extracted from the student course evaluation. Results. Of the 364 students enrolled in the sterile compounding course across four terms, 156 were in the pre-implementation cohort (cohort 1) and 208 were in the post-implementation cohort (cohort 2). Two hundred twenty-eight students completed the course evaluation. Course evaluations significantly demonstrated students' improved perceptions related to seven of 11 survey elements, most notably, critical thinking, integration of concepts, and students feeling challenged. Student performance on laboratory summative assessments also improved. However, written examination scores did not change. Conclusion. This novel sterile compounding course provided a practice-oriented blueprint for instruction and assessment of sterile compounding.


Asunto(s)
Composición de Medicamentos/métodos , Educación en Farmacia/métodos , Entrenamiento Simulado/métodos , Estudios de Cohortes , Curriculum , Evaluación Educacional , Humanos , Farmacéuticos , Farmacia , Desarrollo de Programa/métodos , Esterilización , Estudiantes de Farmacia , Encuestas y Cuestionarios
10.
Am J Pharm Educ ; 82(9): 6762, 2018 11.
Artículo en Inglés | MEDLINE | ID: mdl-30559502

RESUMEN

Objective. To describe a successful remediation for an Acute Care Medicine advanced pharmacy practice experience (APPE) in a student with multiple learning deficits. Methods. A literature review of pharmacy and medical experiential remediation was conducted to identify best practices to implement prior to designing the remediation for our student case. Based on this search and experience as preceptors, a three-phase remediation was designed: one week for assessment, two weeks for development of learning skills and strategies and six weeks for an on-campus APPE. Success of the remediation was determined by student performance, as defined by the APPE preceptor, in all relevant 2013 Center for the Advancement of Pharmacy Education (CAPE) educational outcomes. Results. Baseline assessment indicated that the student was below minimal competency in six of 13 relevant 2013 CAPE educational outcomes. Upon completion of the three-part remediation, the student repeated the Acute Care Medicine APPE, achieving better than minimal competency in all 13 outcomes. The student demonstrated significant improvement in nine of 13 CAPE educational outcomes. Conclusion. This student case provides a novel and successful blueprint for remediation of APPE. However, more evidence-based literature is needed to guide educators in experiential remediation.


Asunto(s)
Educación Compensatoria/métodos , Educación Compensatoria/normas , Educación en Farmacia/métodos , Evaluación Educacional/métodos , Humanos , Aprendizaje , Preceptoría/métodos , Aprendizaje Basado en Problemas , Estudiantes de Farmacia
11.
Am J Cardiol ; 100(10): 1577-83, 2007 Nov 15.
Artículo en Inglés | MEDLINE | ID: mdl-17996523

RESUMEN

The aims of the echocardiographic substudy of this multicenter trial were to evaluate the use of quantitative assessment of mitral regurgitation (MR) severity using serial echocardiography and to assess the efficacy of percutaneous mitral valve repair. Previous surgical repair studies did not use quantitative echocardiographic methods. Results of a percutaneous mitral valve repair clip device in a core echocardiographic laboratory were evaluated. Published parameters for quantifying MR were used in a systematic protocol to qualify patients for study entry and evaluate treatment efficacy at discharge and 6 months after clip repair. Baseline results were presented for 55 patients, and follow-up results, for 49. Ninety-eight percent of required echocardiographic studies were submitted to the core laboratory, and >85% of required measurements were possible. At baseline, mean regurgitant volume was 54.8 +/- 24 ml, regurgitant fraction was 46.9 +/-16.2%, effective regurgitant orifice area was 0.71 +/- 0.40 cm(2), and vena contracta width was 0.66 +/- 0.20 cm. Based on a severity scale of 1 to 4, mean color flow grade was 3.4 +/- 0.7, and mean pulmonary vein flow was 2.8 +/- 1.2. In patients with a clip at 6 months, all measurements of MR severity were significantly decreased versus baseline, with mean regurgitant volume decreased from 50.3 to 27.5 ml (change -22.8 ml; p <0.0001), regurgitant fraction from 44.6% to 28.9% (change -15.7%; p <0.0001), color flow grade from an average of 3.4 to 1.8 (change -1.6; p <0.0001), and pulmonary vein flow from 2.8 to 1.8 (change -1.0; p <0.0018). In conclusion, quantitative assessment of MR is feasible in a multicenter trial, and percutaneous mitral repair with the MitraClip produces a sustained decrease in MR severity to moderate or less for > or =6 months.


Asunto(s)
Ecocardiografía Doppler en Color , Insuficiencia de la Válvula Mitral/diagnóstico por imagen , Insuficiencia de la Válvula Mitral/cirugía , Índice de Severidad de la Enfermedad , Procedimientos Quirúrgicos Cardíacos/instrumentación , Estudios de Factibilidad , Femenino , Estudios de Seguimiento , Humanos , Masculino , Persona de Mediana Edad , Válvula Mitral/cirugía , Estudios Prospectivos , Venas Pulmonares/diagnóstico por imagen , Flujo Sanguíneo Regional
12.
J Toxicol Environ Health A ; 70(20): 1731-44, 2007 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-17885930

RESUMEN

In January 2004, the normally picturesque Cache Valley in northern Utah made national headlines with the highest PM2.5 levels in the nation. Epidemiological studies linked exposure to particulate air pollution in other locations with stroke and Alzheimer's disease and to early mortality from all causes, cancer, and cardiopulmonary diseases. To determine potential effects of these particles on human health, human bronchial epithelial cells (BEAS-2B) were cultured with PM2.5 collected from various locations in the Cache Valley. These particles were slightly cytotoxic, but more potent than NH4NO3, the major chemical component of Cache Valley PM2.5. Gene expression analysis of PM2.5-exposed cells was performed using microarray and quantitative reverse-transcription polymerase chain reaction (RT-PCR). Among other genes, PM2.5 exposure induced genes and proteins involved in the inflammatory response. Most notably, PM2.5-exposed cells showed significant gene level upregulation of activating receptors to interleukins 1 and 6 (IL-1R1 and IL-6R), as well as concomitant increases in protein. Increases in IL-1 receptor associated kinase-1 (IRAK) protein were observed. PM2.5 exposure resulted in release of IL-6, as well phosphorylated STAT3 protein, providing evidence that PM activates the IL-6/gp130/STAT3 signaling pathway in BEAS-2B cells. IL-20 and major histocompatibility complex peptide class-1 (MICA) were upregulated and cleavage of caspase-12 was detected. In total, our results indicate that Cache Valley PM2.5 produces the upregulation of important cytokine receptors and is able to activate both IL-1R- and IL-6R-mediated signaling pathways in human lung cells. These observations are generally consistent with the adverse effects associated with inhalation of fine particulate matter like PM2.5.


Asunto(s)
Inflamación/genética , Interleucinas/genética , Pulmón/efectos de los fármacos , Análisis de Secuencia por Matrices de Oligonucleótidos/métodos , Material Particulado/toxicidad , Caspasa 3/efectos de los fármacos , Células Cultivadas , Pruebas Inmunológicas de Citotoxicidad , Humanos , Nitratos/análisis , Nitratos/toxicidad , Material Particulado/análisis , Utah
13.
J Am Coll Cardiol ; 69(14): 1795-1806, 2017 Apr 11.
Artículo en Inglés | MEDLINE | ID: mdl-28385308

RESUMEN

BACKGROUND: The SCOUT (Percutaneous Tricuspid Valve Annuloplasty System for Symptomatic Chronic Functional Tricuspid Regurgitation) trial is a prospective, single-arm, multicenter, early feasibility study of a novel transcatheter device to plicate the tricuspid annulus (TA) and reduce tricuspid regurgitation (TR). OBJECTIVES: This study tested the feasibility and safety of a novel transcatheter device and assessed its early performance and functional outcomes. METHODS: Between November 2015 and June 2016, 15 patients with New York Heart Association (NYHA) functional class ≥II and moderate or greater functional TR were enrolled. Primary performance and safety endpoint outcomes were technically successful at 30 days with no reintervention. Echocardiographic measurements (TA diameter, effective regurgitant orifice area [EROA], left ventricular stroke volume [LVSV]) and quality-of-life (QoL) measurements (NYHA functional class, Minnesota Living with Heart Failure Questionnaire [MLHFQ], and 6-min walk test [6MWT]) were performed at baseline and 30 days. RESULTS: All patients (mean 73.2 ± 6.9 years of age, 87% female) underwent successful device implantation with no deaths, strokes, bleeding, tamponade, or valve reintervention. Technical success rate at 30 days was 80%, with 3 single-pledget annular detachments without reintervention. In the remaining 12 patients, there were significant reductions in TA (12.3 ± 3.1 cm2 to 11.3 ± 2.7 cm2, respectively; p = 0.019) and EROA (0.51 ± 0.18 cm2 vs. 0.32 ± 0.18 cm2, respectively; p = 0.020), with significant increase in LVSV (63.6 ± 17.9 ml vs. 71.5 ± 25.7 ml, respectively; p = 0.021). In the intention-to-treat cohort, there were significant improvements in NYHA functional class (≥1 class, p = 0.001), MLHFQ (47.4 ± 17.6 to 20.9 ± 14.8; p < 0.001), and 6MWT (245.2 ± 110.1 to 298.0 m ± 107.6 m; p = 0.008). CONCLUSIONS: The 30-day results of the SCOUT trial confirmed the safety of the novel transcatheter device, which reduced TA and EROA, increased LVSV, and improved QoL. (Early Feasibility of the Mitralign Percutaneous Tricuspid Valve Annuloplasty System (PTVAS) Also Known as TriAlign [SCOUT]; NCT02574650.).


Asunto(s)
Anuloplastia de la Válvula Cardíaca/métodos , Implantación de Prótesis de Válvulas Cardíacas/métodos , Válvula Tricúspide/cirugía , Anciano , Anciano de 80 o más Años , Cateterismo Cardíaco , Ecocardiografía , Estudios de Factibilidad , Femenino , Prótesis Valvulares Cardíacas , Humanos , Masculino , Procedimientos Quirúrgicos Mínimamente Invasivos/métodos , Calidad de Vida
14.
Toxicol Sci ; 112(1): 111-22, 2009 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-19675143

RESUMEN

Because of its presumed adverse health effects, particulate air pollution (PM) has received growing attention, but the cellular mechanisms by which PM exerts toxicity are not well elucidated. PM has been associated with early mortality from illnesses that share endoplasmic reticulum (ER) stress as a mechanism of pathogenesis. In this study, we examined whether PM would induce the unfolded protein response (UPR) which is a cellular response to ER stress. Coarse (PM(10)) and fine (PM(2.5)) PM was collected from a single location in Northern Utah's Cache Valley during atmospheric inversions occurring in January 2002 and January 2003. Extracts of PM samples were added (12.5 and 25 microg/ml) to cultured human bronchial epithelial (BEAS-2B) cells for 24 h. At these concentrations neither PM nor LPS exhibited demonstrable cytotoxicity by the neutral red assay. However, PM elicited significant increases of unfolded protein response (UPR)-related post-translational modifications, such as S6 ribosomal protein, heat-shock protein (Hsp)27, and protein kinase related protein phosphorylation and cleavage of activating transcription factor (ATF)-6. PM exposure also resulted in significant increases in the UPR-associated proteins ATF-4, Hsp70, Hsp90, and binding immunoglobulin protein. PM also interfered with the export of Hsp70 from the cells in a concentration-dependent manner and resulted in release of C-reactive protein. Calpain was upregulated and activated in PM-treated cultures, though these events were not proapoptotic. This study demonstrates that PM is capable of inducing ER stress and the UPR in vitro and may be a mechanism by which PM exerts toxicity.


Asunto(s)
Contaminantes Atmosféricos/toxicidad , Retículo Endoplásmico/efectos de los fármacos , Pulmón/efectos de los fármacos , Salud Urbana , Western Blotting , Línea Celular , Retículo Endoplásmico/metabolismo , Proteínas de Choque Térmico/metabolismo , Humanos , Pulmón/citología , Pulmón/metabolismo , Tamaño de la Partícula , Fosforilación , Desnaturalización Proteica , Procesamiento Proteico-Postraduccional
15.
J Am Soc Echocardiogr ; 21(3): 191-213, 2008 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-18314047

RESUMEN

Echocardiography plays an evolving and important role in the care of heart failure patients treated with biventricular pacing, or cardiac resynchronization therapy (CRT). Numerous recent published reports have utilized echocardiographic techniques to potentially aide in patient selection for CRT prior to implantation and to optimized device settings afterwards. However, no ideal approach has yet been found. This consensus report evaluates the contemporary applications of echocardiography for CRT including relative strengths and technical limitations of several techniques and proposes guidelines regarding current and possible future clinical applications. Principal methods advised to qualify abnormalities in regional ventricular activation, known as dyssynchrony, include longitudinal velocities by color-coded tissue Doppler and the difference in left ventricular to right ventricular ejection using routine pulsed Doppler, or interventricular mechanical delay. Supplemental measures of radial dynamics which may be of additive value include septal-to-posterior wall delay using M-mode in patients with non-ischemic disease with technically high quality data, or using speckle tracking radial strain. A simplified post-CRT screening for atrioventricular optimization using Doppler mitral inflow velocities is also proposed. Since this is rapidly changing field with new information being added frequently, future modification and refinements in approach are anticipated to continue.


Asunto(s)
Estimulación Cardíaca Artificial/normas , Ecocardiografía/normas , Insuficiencia Cardíaca/diagnóstico por imagen , Insuficiencia Cardíaca/prevención & control , Guías de Práctica Clínica como Asunto , Disfunción Ventricular Izquierda/diagnóstico por imagen , Disfunción Ventricular Izquierda/prevención & control , Humanos , Interpretación de Imagen Asistida por Computador/normas , Selección de Paciente , Pronóstico , Estados Unidos
16.
Echocardiography ; 24(2): 159-61, 2007 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-17313547

RESUMEN

Percutaneous delivery of left atrial appendage (LAA) occluding devices represents a novel approach for stroke prevention in patients with atrial fibrillation. Transesophageal echocardiography (TEE) has a pivotal role throughout these procedures, facilitating device size selection and ensuring optimal deployment of the device. We report a case of an LAA occluding device implantation in which apparent proper positioning on fluoroscopy was determined by TEE to be malpositioning with a nonocclusive, perpendicular orientation to the plane of the LAA ostium. This problem appeared to be related to a complex, multilobed LAA anatomy and was readily resolved by repositioning of the device under TEE guidance.


Asunto(s)
Apéndice Atrial/anatomía & histología , Apéndice Atrial/diagnóstico por imagen , Cateterismo Cardíaco , Ecocardiografía Transesofágica , Prótesis e Implantes , Fibrilación Atrial/complicaciones , Fibrilación Atrial/terapia , Humanos , Masculino , Persona de Mediana Edad , Radiografía , Accidente Cerebrovascular/etiología , Accidente Cerebrovascular/prevención & control
17.
Eur J Echocardiogr ; 8(6): 501-3, 2007 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-17045549

RESUMEN

Transesophageal echocardiography has significantly improved the detection of vegetative lesions, including those associated with indwelling central venous lines. However, in certain cases, the increased mobility of these lesions as well as the presence of indwelling catheters obscure the precise delineation of their origin and the detection of attachment to adjacent structures. We report a case of right-sided endocarditis in which the use of contrast was instrumental to the comprehensive evaluation of the lesion and to subsequent patient management.


Asunto(s)
Ecocardiografía Transesofágica , Endocarditis/diagnóstico por imagen , Cateterismo Cardíaco , Medios de Contraste , Diagnóstico Diferencial , Fluorocarburos , Humanos , Masculino , Persona de Mediana Edad
18.
J Am Soc Echocardiogr ; 19(5): 579.e5-7, 2006 May.
Artículo en Inglés | MEDLINE | ID: mdl-16644447

RESUMEN

Transesophageal echocardiogram is a very safe procedure, however, it is not devoid of complications. We report a case of esophageal dissection complicating transesophageal echocardiogram in a 52-year-old man who was treated conservatively. Moreover, we review briefly the complications of transesophageal echocardiogram.


Asunto(s)
Ecocardiografía Transesofágica/efectos adversos , Esófago/diagnóstico por imagen , Esófago/lesiones , Humanos , Masculino , Persona de Mediana Edad , Rotura/diagnóstico por imagen
19.
Catheter Cardiovasc Interv ; 68(6): 821-8, 2006 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-17080467

RESUMEN

INTRODUCTION: The Endovascular Valve Edge-to-Edge REpair STudies (EVEREST) are investigating a percutaneous technique for edge-to-edge mitral valve repair with a repositionable clip. The effects on the mitral valve gradient (MVG) and mitral valve area (MVA) are not known. METHODS: Twenty seven patients with moderate to severe or severe mitral regurgitation (MR) were enrolled. Echocardiography was performed preprocedure, at discharge, and at 1, 6, and 12 months. Mean MVG was measured by Doppler and MVA by planimetry and pressure half-time, and evaluated in a central core laboratory. Pre- and postclip deployment, simultaneous left atrial/pulmonary capillary wedge and left ventricular pressures were obtained in eight patients. RESULTS: Three patients did not receive a clip, six patients had their clip(s) explanted by 6 months (none for mitral stenosis), and four were repaired with two clips. Results are notable for a slight increase in mean MVG by Doppler postclip deployment (1.79 +/- 0.89 to 3.31 +/- 2.09 mm Hg, P < 0.01) and an expected decrease in MVA by planimetry (6.49 +/- 1.61 to 4.46 +/- 2.14 cm(2), P < 0.001) and by pressure half time (4.35 +/- 0.98 to 3.01 +/- 1.42 cm(2), P < 0.05). There were no significant changes in hemodynamic parameters postclip deployment by direct pressure measurements. There was no change in MVA by planimetry from discharge to 12 months (3.90 +/- 1.90 to 3.79 +/- 1.54 cm(2), P = 0.78). CONCLUSIONS: Echocardiographic and hemodynamic measurements after percutaneous mitral valve repair with the MitraClip show an expected decrease in mitral valve area with no evidence of clinically significant mitral stenosis either immediately after clip deployment or after 12 months of follow-up.


Asunto(s)
Insuficiencia de la Válvula Mitral/cirugía , Instrumentos Quirúrgicos , Anciano , Anciano de 80 o más Años , Presión Sanguínea , Ecocardiografía Doppler , Femenino , Humanos , Masculino , Procedimientos Quirúrgicos Mínimamente Invasivos , Insuficiencia de la Válvula Mitral/diagnóstico por imagen , Estenosis de la Válvula Mitral/prevención & control , Presión Esfenoidal Pulmonar , Instrumentos Quirúrgicos/efectos adversos
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