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1.
Oral Oncol ; 50(9): 869-76, 2014 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-24998139

RESUMEN

OBJECTIVES: The standard concurrent radiotherapy and chemotherapy regimens for patients with oropharyngeal cancer are highly toxic. Human papillomavirus (HPV)-associated oropharyngeal squamous cell carcinoma (OPSCC) has recently emerged as a distinct biological and clinical entity with improved response to treatment and prognosis. A tailored therapeutic approach is needed to optimize patient care. The aim of our study was to investigate the impact of HPV and smoking status on early toxicities (primarily mucositis) associated with concurrent chemotherapy and radiotherapy in patients with OPSCC. MATERIALS AND METHODS: We retrospectively evaluated 72 consecutive patients with OPSCC and known HPV status treated with concurrent radiotherapy and chemotherapy at our institution. Treatment-related toxicities were stratified by smoking and HPV status and compared using univariate and multivariate logistic regression. RESULTS: HPV-positive patients had a 6.86-fold increase in the risk of having severe, grade 3-4 mucositis. This effect was preserved after adjusting for patient smoking status, nodal stage, radiotherapy technique and radiotherapy maximum dose. Additionally, HPV status had significant effect on the objective weight loss during treatment and at three months after treatment. Consistently, non-smokers had a significant 2.70-fold increase in the risk of developing severe mucositis. CONCLUSION: Risk factors for OPSCC modify the incidence of treatment-related early toxicities, with HPV-positive and non-smoking status correlating with increased risk of high grade mucositis and associated outcomes. Retrospective single-institution studies need to be interpreted cautiously. However, this finding is important to consider when designing therapeutic strategies for HPV-positive patients and merits further investigation in prospective clinical trials.


Asunto(s)
Alphapapillomavirus/aislamiento & purificación , Mucositis/etiología , Neoplasias Orofaríngeas/tratamiento farmacológico , Neoplasias Orofaríngeas/radioterapia , Fumar , Adulto , Anciano , Anciano de 80 o más Años , Antineoplásicos/efectos adversos , Terapia Combinada , Supervivencia sin Enfermedad , Femenino , Humanos , Masculino , Persona de Mediana Edad , Cooperación del Paciente , Radioterapia/efectos adversos , Estudios Retrospectivos , Resultado del Tratamiento
2.
Water Sci Technol ; 67(2): 366-73, 2013.
Artículo en Inglés | MEDLINE | ID: mdl-23168637

RESUMEN

Anaerobic digestion is a viable on-site treatment technology for rich organic waste streams such as food waste and blackwater. In contrast to large-scale municipal wastewater treatment plants which are typically located away from the community, the effluent from any type of on-site system is a potential pathogenic hazard because of the intimacy of the system to the community. The native concentrations of the pathogen indicators Escherichia coli, Clostridium perfringens and somatic coliphage were tracked for 30 days under stable operation (organic loading rate (OLR) = 1.8 kgCOD m(-3) day(-1), methane yield = 52% on a chemical oxygen demand (COD) basis) of a two-stage laboratory-scale digester treating a mixture of food waste and blackwater. E. coli numbers were reduced by a factor of 10(6.4) in the thermophilic stage, from 10(7.5±0.3) to 10(1.1±0.1) cfu 100 mL(-1), but regenerated by a factor of 10(4) in the mesophilic stage. Neither the thermophilic nor mesophilic stages had any significant impact on C. perfringens concentrations. Coliphage concentrations were reduced by a factor of 10(1.4) across the two stages. The study shows that anaerobic digestion only reduces pathogen counts marginally but that counts in effluent samples could be readily reduced to below detection limits by filtration through a 0.22 µm membrane, to investigate membrane filtration as a possible sanitation technique.


Asunto(s)
Bacterias/aislamiento & purificación , Alimentos , Residuos/análisis , Aguas Residuales/microbiología , Aguas Residuales/virología , Purificación del Agua/métodos , Anaerobiosis , Bacteriófagos/aislamiento & purificación , Biodegradación Ambiental , Biocombustibles/análisis , Análisis de la Demanda Biológica de Oxígeno , Clostridium perfringens/aislamiento & purificación , Recuento de Colonia Microbiana , Escherichia coli/aislamiento & purificación , Filtración , Concentración de Iones de Hidrógeno , Compuestos Orgánicos/análisis , Aguas del Alcantarillado/microbiología , Eliminación de Residuos Líquidos
3.
Clin Neuropsychol ; 25(5): 689-701, 2011 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-21756209

RESUMEN

The objective of this proceedings is to integrate the concussion in sport literature and sport science research on safety in ice hockey to develop an action plan to reduce the risk, incidence, severity, and consequences of concussion in ice hockey. A rationale paper outlining a collaborative action plan to address concussions in hockey was posted for review two months prior to the Ice Hockey Summit: Action on Concussion. Focused presentations devoted specifically to concussion in ice hockey were presented during the Summit and breakout sessions were used to develop strategies to reduce concussion in the sport. This proceedings and a detailed scientific review (a matrix of solutions) were written to disseminate the evidence-based information and resulting concussion reduction strategies. The manuscripts were reviewed by the authors, advisors and contributors to ensure that the opinions and recommendations reflect the current level of knowledge on concussion in hockey. Six components of a potential solution were articulated in the Rationale paper and became the topics for breakout groups that followed the professional, scientific lectures. Topics that formed the core of the action plan were: metrics and databases; recognizing, managing and return to play; hockey equipment and ice arenas; prevention and education; rules and regulations; and expedient communication of the outcomes. The attendees in breakout sessions identified action items for each section. The most highly ranked action items were brought to a vote in the open assembly, using an Audience Response System (ARS). The strategic planning process was conducted to assess: Where are we at?; Where must we get to?; and What strategies are necessary to make progress on the prioritized action items? Three prioritized action items for each component of the solution and the percentage of the votes received are listed in the body of this proceedings.


Asunto(s)
Conmoción Encefálica/prevención & control , Hockey/lesiones , Hockey/normas , Conmoción Encefálica/etiología , Guías como Asunto , Humanos , Seguridad
4.
Nature ; 467(7315): 555-61, 2010 Sep 30.
Artículo en Inglés | MEDLINE | ID: mdl-20882010

RESUMEN

Protecting the world's freshwater resources requires diagnosing threats over a broad range of scales, from global to local. Here we present the first worldwide synthesis to jointly consider human and biodiversity perspectives on water security using a spatial framework that quantifies multiple stressors and accounts for downstream impacts. We find that nearly 80% of the world's population is exposed to high levels of threat to water security. Massive investment in water technology enables rich nations to offset high stressor levels without remedying their underlying causes, whereas less wealthy nations remain vulnerable. A similar lack of precautionary investment jeopardizes biodiversity, with habitats associated with 65% of continental discharge classified as moderately to highly threatened. The cumulative threat framework offers a tool for prioritizing policy and management responses to this crisis, and underscores the necessity of limiting threats at their source instead of through costly remediation of symptoms in order to assure global water security for both humans and freshwater biodiversity.


Asunto(s)
Biodiversidad , Conservación de los Recursos Naturales/estadística & datos numéricos , Internacionalidad , Ríos , Abastecimiento de Agua , Animales , Conservación de los Recursos Naturales/métodos , Explotaciones Pesqueras , Geografía , Densidad de Población
5.
Hum Pathol ; 40(2): 156-65, 2009 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-18799189

RESUMEN

Microvessel density may be one measure of tumor associated angiogenesis but is methodologically difficult to standardize and reproduce. We used our automated quantitative image analysis system, AQUA, to more objectively assess microvessel area. Cytokeratin and CD31 were used to create tumor and vessel compartments respectively with AQUA. Microvessel area was defined as CD31 compartment area normalized to the tissue spot area (CD31 area/area of entire tissue spot). Consecutive breast cancer whole sections were stained with CD31 to compare pathologist-based microvessel density with AQUA microvessel area. Microvessel areas of 3-fold redundant tissue microarrays of 652 primary breast cancers were also assessed. CD34 and factor VIII-related antigen were also tested. There was nearly linear correlation between pathologist's microvessel density and AQUA microvessel area with regression coefficient R = 0.846. On the redundant arrays, of the 67% evaluable cases, 52% were microvessel area high and 48% low with good reproducibility of scores (Spearman rho 0.551). AQUA microvessel area was associated with larger tumors, node positivity, and estrogen receptor negativity, with 20 year survival at the univariate and multivariate levels (P < .0001 and P = .0121, respectively). CD34 or factor VIII-related antigen were more heterogenous, had poor association with CD31, and did not correlate with outcome. AQUA-based microvessel area was significantly correlated with both standard breast cancer prognostic parameters as well as with clinical outcome. In the future, it may also allow the use of the AQUA-based algorithms to quantify the expression of angiogenic biomarkers to either tumor or microvessel area-specific compartments.


Asunto(s)
Neoplasias de la Mama/irrigación sanguínea , Neoplasias de la Mama/patología , Procesamiento de Imagen Asistido por Computador/métodos , Microvasos/patología , Neovascularización Patológica/patología , Automatización , Neoplasias de la Mama/metabolismo , Femenino , Humanos , Inmunohistoquímica , Estimación de Kaplan-Meier , Microvasos/metabolismo , Persona de Mediana Edad , Molécula-1 de Adhesión Celular Endotelial de Plaqueta/metabolismo , Pronóstico , Reproducibilidad de los Resultados , Análisis de Matrices Tisulares
7.
Environ Toxicol ; 19(2): 115-22, 2004 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-15037997

RESUMEN

The herbicide hexazinone was applied as the commercial formulation Velpar L at field-rate (FR) concentrations of FR (14.77 microg ai g(-1)), FRx5 (73.85 microg ai g(-1)), FRx10 (147.70 microg ai g(-1)), FRx50 (738.50 microg ai g(-1)), and FRx100 (1477.00 microg ai g(-1)) to acidic soil, pH 4.12, taken from a lowbush blueberry field. Hexazinone was tested for inhibitory effects on various transformations of the nitrogen cycle and soil respiration. Nitrogen fixation was unaffected by hexazinone levels up to FRx100 following a 4-week incubation period. Ammonification was initially inhibited by all levels of hexazinone, but after 4 weeks, ammonification in all treatment systems was equal to or greater than the control. Nitrification was more sensitive to hexazinone; however, application at a field-rate level caused no inhibition. Inhibitory effects were noted above FR after a 2-month endpoint analysis and above FRx5 after a 6-month endpoint analysis. Hexazinone concentrations up to and including FRx100 stimulated denitrification. Soil respiration was also stimulated over a 3-week period when applied at a level up to 100 times the recommended field rate. In general, it was found that when applied at the recommended field application rate, hexazinone does not adversely affect the nitrogen cycle or soil respiration in acidic lowbush blueberry soils.


Asunto(s)
Nitrógeno/metabolismo , Microbiología del Suelo , Triazinas/toxicidad , Agricultura/métodos , Análisis de Varianza , Arándanos Azules (Planta) , Relación Dosis-Respuesta a Droga , Determinación de Punto Final , Nueva Escocia , Factores de Tiempo , Triazinas/metabolismo
8.
Philos Trans R Soc Lond B Biol Sci ; 358(1440): 2011-26, 2003 Dec 29.
Artículo en Inglés | MEDLINE | ID: mdl-14728795

RESUMEN

Human uses of freshwater resources are increasing rapidly as the world population rises. As this happens, less water is left to support aquatic and associated ecosystems. To minimize future human water shortages and undesirable environmental impacts, more equitable sharing of water resources between society and nature is required. This will require physical quantities and social values to be placed on both human and aquatic ecosystem requirements. Current water valuation systems are dominated by economic values and this paper illustrates new quantification and valuation methods that take more account of human well-being and environmental impacts. The key to the effective implementation of these more equitable water allocation methods is the use of catchment-based integrated water resources management. This holistic framework makes it possible for human and ecosystem water requirements and the interactions between them to be better understood. This knowledge provides the foundation for incorporating relevant social factors so that water policies and laws can be developed to make best use of limited water resources. Catchment-based co-management can therefore help to ensure more effective sharing of water between people and nature.


Asunto(s)
Conservación de los Recursos Naturales , Ecosistema , Ambiente , Agua Dulce , Actividades Humanas , Factores Socioeconómicos
9.
Heart ; 86(4): 397-404, 2001 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-11559677

RESUMEN

OBJECTIVE: To dissociate the effect of inotropy from activation change during dobutamine stress on left ventricular long axis function in patients with coronary artery disease (CAD). METHODS: 25 patients with CAD and normal left ventricular cavity size and 30 with cavity dilatation-18 with normal activation (DCM-NA) and 12 with left bundle branch block (DCM-LBBB)-were compared with 20 controls. 12 lead ECG and septal long axis echograms were assessed at rest and peak dobutamine stress. Amplitude, shortening and lengthening velocities, postejection shortening, Q wave to onset of shortening (Q-OS), and A2 to onset of lengthening (A2-OL) were measured. Inotropy was evaluated from peak aortic acceleration. RESULTS: In controls, amplitude, shortening and lengthening velocities, and peak aortic acceleration increased with stress; QRS, Q-OS, and A2-OL shortened (all p < 0.001); and contraction remained coordinate. In the group of patients with CAD and normal left ventricular cavity size, shortening velocity and peak aortic acceleration increased with stress (p < 0.005). However, amplitude and lengthening velocity did not change, QRS, Q-OS, and A2-OL lengthened (p < 0.01), and incoordination appeared. Results were similar in the group with DCM-NA. In the DCM-LBBB group, shortening velocity and peak aortic acceleration increased modestly with stress (p < 0.01) but amplitude, lengthening velocity, QRS, Q-OS, A2-OL, and incoordination remained unchanged. Overall, change in shortening velocity correlated with that in peak aortic acceleration (r(2) = 0.71), in amplitude with that in lengthening velocity (r(2) = 0.74), and in QRS with both Q-OS (r(2) = 0.69) and A2-OL (r(2) = 0.63). CONCLUSION: The normal long axis response to dobutamine reflects both inotropy and rapid activation. In CAD, inotropy is preserved with development of ischaemia but the normal increase in amplitude is lost and prolonged activation delays the time course of shortening, causing pronounced incoordination. Overall, shortening rate uniformly reflects inotropy while lengthening rate depends mainly on systolic amplitude rather than primary diastolic involvement, even with overt ischaemia.


Asunto(s)
Cardiotónicos , Enfermedad Coronaria/fisiopatología , Dobutamina , Disfunción Ventricular Izquierda/fisiopatología , Electrocardiografía/efectos de los fármacos , Femenino , Humanos , Masculino , Persona de Mediana Edad , Estrés Fisiológico/fisiopatología , Volumen Sistólico/fisiología
10.
Gastrointest Endosc Clin N Am ; 11(2): 387-408, viii, 2001 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-11319069

RESUMEN

Achalasia in children bears many similarities to the disorder in adults, both in terms of clinical features and in terms of the approach to therapy. Pharmacologic management is of limited temporary benefit until more definitive therapy is undertaken. Intrasphincteric injections of botulinum toxin provides safe but short-term relief from symptoms. Based on our review of the safety and effectiveness of pneumatic dilation, we advocate this procedure as the primary form of definitive therapy for achalasia in children. In patients who do not achieve satisfactory results from a series of graduated pneumatic dilations, Heller myotomy provides safe and effective surgical treatment.


Asunto(s)
Acalasia del Esófago/etiología , Acalasia del Esófago/terapia , Adolescente , Factores de Edad , Toxinas Botulínicas Tipo A/uso terapéutico , Niño , Preescolar , Diagnóstico Diferencial , Dilatación , Acalasia del Esófago/diagnóstico , Acalasia del Esófago/epidemiología , Femenino , Humanos , Lactante , Masculino , Músculo Liso/cirugía , Fármacos Neuromusculares/uso terapéutico , Selección de Paciente , Pediatría/métodos , Seguridad , Resultado del Tratamiento
11.
Heart ; 85(4): 411-6, 2001 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-11250967

RESUMEN

OBJECTIVE: To identify the effects of altered ventricular activation during dobutamine stress on left ventricular function in normal subjects and in patients with coronary artery disease, and to distinguish these from an inotropic response. DESIGN: Prospective analysis of 12 lead ECG and echocardiogram at rest and at peak stress. SETTING: Tertiary referral centre for cardiac disease equipped with non-invasive facilities for pharmacological stress testing. METHODS: 22 patients with coronary artery disease were compared with 17 age matched controls. Left ventricular ejection and filling patterns were assessed using Doppler echocardiography. Activation effects were correlated with relative left ventricular ejection and filling times, and the Z ratio ([left ventricular ejection + filling times]/RR interval). Inotropic response was measured from peak aortic acceleration. RESULTS: In controls, QRS shortened (by 4 ms, p < 0.001), and total ejection and filling periods lengthened (by 2 s/min, p < 0.01 and 5 s/min, p < 0.001, respectively). The Z ratio thus increased and correlated with QRS shortening (r(2) = 0.69). Peak aortic acceleration (PAA) increased by 135%, p < 0.001. In patients, QRS lengthened at peak stress (by 9 ms, p < 0.001). Total ejection and filling times did not change, but Z ratio fell, correlating with QRS prolongation (r(2) = 0.65). Nevertheless, PAA increased by 63%, p < 0.001. CONCLUSIONS: Relative ejection and filling times reflect ventricular activation at rest and during stress independent of changes in inotropic state. By contrast, peak aortic acceleration reflects the positive inotropic effect of dobutamine on the myocardium, regardless of changes in activation.


Asunto(s)
Cardiotónicos , Enfermedad Coronaria/fisiopatología , Dobutamina , Prueba de Esfuerzo , Función Ventricular Izquierda/fisiología , Análisis de Varianza , Enfermedad Coronaria/diagnóstico , Ecocardiografía Doppler , Electrocardiografía , Femenino , Frecuencia Cardíaca , Hemodinámica , Humanos , Masculino , Persona de Mediana Edad , Contracción Miocárdica , Estudios Prospectivos , Reproducibilidad de los Resultados , Función Ventricular Izquierda/efectos de los fármacos
12.
Ultrasound Obstet Gynecol ; 15(3): 259-61, 2000 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-10846785

RESUMEN

Complete or total arhinia, in which there is absence of the soft tissue of the nose, is extremely rare. The embryological origin of the defect is thought to be maldevelopment of the paired nasal placodes. Available neonatal case descriptions have reported the frequent coexistence of other facial anomalies. This report is the first to describe the antenatal diagnosis of total arhinia confirmed after delivery. Sonographic views of the fetal profile, showing an absence of the nose led to consideration of the diagnosis.


Asunto(s)
Diabetes Gestacional/diagnóstico , Nariz/anomalías , Nariz/diagnóstico por imagen , Complicaciones del Embarazo/diagnóstico por imagen , Ultrasonografía Prenatal , Adulto , Femenino , Estudios de Seguimiento , Humanos , Recién Nacido , Imagen por Resonancia Magnética , Masculino , Embarazo , Complicaciones del Embarazo/diagnóstico , Resultado del Embarazo , Segundo Trimestre del Embarazo , Procedimientos de Cirugía Plástica , Tomografía Computarizada por Rayos X
13.
Microsurgery ; 20(3): 105-8, 2000.
Artículo en Inglés | MEDLINE | ID: mdl-10790171

RESUMEN

Although the tongue is not a vital organ in sustaining life, it may be a vital organ in sustaining the will to live in many people. As carcinoma of the tongue represents the majority of the 30,000 oral cavity cancers diagnosed per year in the United States, many patients face the potential consequences of resection of part or all of the tongue for cure. To date, reconstructive options do not restore optimal tongue function including articulation, swallowing, taste, or sensation. With the ultimate goal of improving tongue reconstruction, we report on a successfully performed autograft transplantation of the tongue in an animal model. Before undertaking allograft transplantation of the tongue, an autograft tongue transplant would be attempted to identify the feasibility of such a procedure and to determine the similarity of an animal model with human techniques. The dog's neck, tongue, and oral anatomy represent an excellent animal model for tongue reconstruction. This procedure can be performed successfully in an animal model. The only previously published replantation of the tongue involved the reattachment of the anterior portion of a human tongue after physical trauma. To our knowledge, the enclosed report represents the first successful total excision and replantation of the tongue in either a human or animal model.


Asunto(s)
Modelos Animales de Enfermedad , Reimplantación , Lengua/cirugía , Anastomosis Quirúrgica , Animales , Perros , Microcirugia , Reimplantación/métodos , Lengua/irrigación sanguínea
14.
J Am Coll Cardiol ; 34(4): 1117-22, 1999 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-10520800

RESUMEN

OBJECTIVES: To investigate the electromechanical consequences of nonsurgical septal reduction in a group of patients with hypertrophic obstructive cardiomyopathy (HOCM). BACKGROUND: Patients with HOCM may benefit symptomatically from nonsurgical septal reduction as an alternative to dual chamber pacing and sensing (DDD) pacing and surgical myectomy. METHODS: We studied 20 symptomatic patients with HOCM (12 men), mean age 52 +/- 17 years, before and after septal reduction using echocardiography and electrocardiogram (ECG). RESULTS: Septal reduction with a significant rise in cardiac enzymes was successfully achieved in all patients resulting in a 50% reduction in resting left ventricular (LV) outflow tract gradient within 24 h of procedure and an 80% reduction after six months. Left ventricular outflow tract diameter increased at 24 h with a further increase six months later. QRS duration increased by 35 ms at 24 h after procedure associated with right bundle branch block (RBBB) and significant rightward axis rotation in 16 patients. R-wave amplitude in V1 fell by 7 +/- 4 mm in 15/20 patients, 13 of whom developed reduction of septal long axis excursion. Left-axis deviation appeared in three patients and septal q-wave was suppressed in 12 long-axis excursion; peak shortening and lengthening rates all fell at the septal site by 20% at 24 h. Only septal excursion returned back to baseline values at six months. Wall motion also became incoordinate so that postejection septal shortening increased by three times control values at 24 h and by four times six months later. CONCLUSIONS: Nonsurgical septal reduction is associated with a drop in LV outflow tract obstruction and the creation of a localized myocardial infarction (MI) increasing LV outflow tract diameter. The technique also results in a consistent alteration of septal activation and secondary incoordination. The latter could play a significant role in gradient reduction and symptomatic improvement in a manner similar to that seen with DDD pacing.


Asunto(s)
Cardiomiopatía Hipertrófica/terapia , Tabiques Cardíacos , Función Ventricular Izquierda/fisiología , Adulto , Anciano , Velocidad del Flujo Sanguíneo/fisiología , Bloqueo de Rama/diagnóstico por imagen , Bloqueo de Rama/fisiopatología , Cardiomiopatía Hipertrófica/diagnóstico por imagen , Cardiomiopatía Hipertrófica/fisiopatología , Diástole/fisiología , Ecocardiografía Doppler , Electrocardiografía , Femenino , Tabiques Cardíacos/diagnóstico por imagen , Tabiques Cardíacos/fisiopatología , Humanos , Masculino , Persona de Mediana Edad , Contracción Miocárdica/fisiología , Sístole/fisiología , Resultado del Tratamiento
15.
J Am Pharm Assoc (Wash) ; 39(4): 493-8, 1999.
Artículo en Inglés | MEDLINE | ID: mdl-10467812

RESUMEN

OBJECTIVE: To assess the level of expectation and satisfaction of patients with asthma regarding the counseling provided by community pharmacists, and to identify the counseling information patients consider important in helping them manage their asthma. DESIGN: Mailed survey. PARTICIPANTS: 208 patients seen in the University of Utah Asthma Clinic for at least 3 months, age 18 years or older, and on at least 1 asthma medication. MAIN OUTCOME MEASURES: Frequency of pharmacist-provided asthma medication counseling, patients' perception of the importance of counseling, and their satisfaction with counseling. RESULTS: Response rate was 55% (106 of 194 surveys returned). The majority of patients (> 90%) indicated that their community pharmacist "never" or "sometimes" discussed the management of their asthma with them. Frequency of counseling in three predefined areas of asthma education (role of medications, inhaler technique, and prevention of asthma attacks) was 1.91, 1.72, and 1.31, respectively (1 = never, 4 = always). Most patients (76%) considered these areas of counseling to be important for the management of their asthma. Most patients (62%) were "somewhat" to "pretty" satisfied with the type and amount of asthma counseling provided by their pharmacist. Counseling sessions averaged less than 3 minutes. Only 25% of patients would be willing to pay an additional amount for pharmaceutical care. CONCLUSION: Self-reported rates of patient counseling concerning asthma medications in the community pharmacy setting are low and adequately address neither the educational needs of patients nor the recommendations of the National Asthma Education and Prevention Program.


Asunto(s)
Asma/psicología , Consejo , Satisfacción del Paciente , Farmacéuticos , Adulto , Recolección de Datos , Humanos , Factores de Tiempo
16.
Laryngoscope ; 109(2 Pt 1): 198-203, 1999 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-10890765

RESUMEN

OBJECTIVES/HYPOTHESIS: Complications of rhytidectomy have been widely reported in the literature. This study examines the incidence of complications after rhytidectomy in the hands of chief residents under appropriate attending supervision in an otolaryngology-head and neck surgery training program. MATERIALS AND METHODS: The charts of 96 consecutive SMAS rhytidectomy patients were retrospectively reviewed. Patients were selected for surgery from a clinic designed exclusively for cosmetic facial surgery patients. This clinic was run by the otolaryngology chief resident and was supervised by an attending staff surgeon. Most patients elected local anesthesia and sedation administered by the surgical team. Submental liposuction was performed followed by SMAS plication rhytidectomy. RESULTS: Follow-up ranged from 1 to 60 months. Complications included expanding hematoma (1%), temporary facial nerve weakness (3%), pretragal/mastoid skin slough (4.2%), permanent ear numbness (1%), hypertrophic scar (3.1%), wound infection (1%), and dissatisfaction with result (4%). There were no cases of permanent facial nerve injury. CONCLUSION: These complication rates compare favorably with reported rates of larger studies over the past 30 years. These data support the conclusion that rhytidectomy can be performed safely by otolaryngology residents with little morbidity and good patient satisfaction.


Asunto(s)
Educación , Internado y Residencia , Otolaringología/educación , Complicaciones Posoperatorias/diagnóstico , Ritidoplastia/métodos , Anciano , Femenino , Estudios de Seguimiento , Humanos , Masculino , Persona de Mediana Edad , Procedimientos de Cirugía Plástica/métodos , Estudios Retrospectivos
17.
J Perinatol ; 18(6 Pt 1): 427-30, 1998.
Artículo en Inglés | MEDLINE | ID: mdl-9848754

RESUMEN

OBJECTIVE: To evaluate the differences in sleep of women throughout pregnancy compared with those of nonpregnant control subjects. STUDY DESIGN: Four pregnant women were studied longitudinally during their pregnancy using inpatient polysomnography. Measurements included electroencephalography, electrocardiography, and continuous-pulse oximetry. Four healthy nonpregnant women matched for age and weight were used as control subjects. The total sleep time was recorded, and percentages of each sleep stage were generated. RESULTS: Qualitative differences in sleep between pregnancy patients and control subjects were evident. Control subjects displayed a normal appearance of slow-wave sleep in stages 3 and 4 (delta sleep). When pregnant patients did display delta sleep, it appeared abnormal secondary to extensive alpha-wave intrusion. Even when including this abnormal delta sleep in a quantitative comparison, the pregnant patients had a significantly shorter percentage of total sleep time in delta sleep (4.9+/-1.9% vs 21.9+/-6.0%, p=0.03). CONCLUSION: Sleep in pregnancy is characterized by loss of normal slow-wave sleep. Thus, sleep stages 3 and 4 are shortened during pregnancy. This sleep alteration is persistent when followed longitudinally during pregnancy.


Asunto(s)
Embarazo/fisiología , Sueño/fisiología , Adulto , Estudios de Casos y Controles , Electroencefalografía , Femenino , Humanos , Estudios Longitudinales , Polisomnografía , Fases del Sueño/fisiología
18.
J Am Coll Cardiol ; 32(5): 1187-93, 1998 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-9809924

RESUMEN

OBJECTIVES: Our aim was to determine mechanisms underlying abnormalities of right ventricular (RV) diastolic function seen in heart failure. BACKGROUND: It is not clear whether these right-sided abnormalities are due to primary RV disease or are secondary to restrictive physiology on the left side of the heart. The latter regresses with angiotensin-converting enzyme inhibition (ACE-I). METHODS: Transthoracic echo-Doppler measurements of left- and right-ventricular function in 17 patients with systolic left ventricular (LV) disease and restrictive filling before and 3 weeks after the institution of ACE-I were compared with those in 21 controls. RESULTS: Before ACE-I, LV filling was restrictive, with isovolumic relaxation time short and transmitral E wave acceleration and deceleration rates increased (p < 0.001). Right ventricular long axis amplitude and rates of change were all reduced (p < 0.001), the onset of transtricuspid Doppler was delayed by 160 ms after the pulmonary second sound versus 40 ms in normals (p < 0.001) and overall RV filling time reduced to 59% of total diastole. Right ventricular relaxation was very incoordinate and peak E wave velocity was reduced. Peak RV to right atrial (RA) pressure drop, estimated from tricuspid regurgitation, was 45+/-6 mm Hg, and peak pulmonary stroke distance was 40% lower than normal (p < 0.001). With ACE-I, LV isovolumic relaxation time lengthened, E wave acceleration and deceleration rates decreased and RV to RA pressure drop fell to 30+/-5 mm Hg (p < 0.001) versus pre-ACE-I. Right ventricular long axis dynamics did not change, but tricuspid flow started 85 ms earlier to occupy 85% of total diastole; E wave amplitude increased but acceleration and deceleration rates were unaltered. Values of long axis systolic and diastolic measurements did not change. Peak pulmonary artery velocity increased (p < 0.01). CONCLUSIONS: Abnormalities of RV filling in patients with heart failure normalize with ACE-I as restrictive filling regresses on the left. This was not due to altered right ventricular relaxation or to a fall in pulmonary artery pressure or tricuspid pressure gradient, but appears to reflect direct ventricular interaction during early diastole.


Asunto(s)
Inhibidores de la Enzima Convertidora de Angiotensina/uso terapéutico , Ventrículos Cardíacos/fisiopatología , Disfunción Ventricular Derecha/tratamiento farmacológico , Obstrucción del Flujo Ventricular Externo/complicaciones , Velocidad del Flujo Sanguíneo , Diástole/efectos de los fármacos , Ecocardiografía Doppler de Pulso , Estudios de Seguimiento , Insuficiencia Cardíaca/tratamiento farmacológico , Insuficiencia Cardíaca/etiología , Insuficiencia Cardíaca/fisiopatología , Ventrículos Cardíacos/diagnóstico por imagen , Ventrículos Cardíacos/efectos de los fármacos , Humanos , Persona de Mediana Edad , Válvula Mitral/diagnóstico por imagen , Válvula Mitral/fisiopatología , Arteria Pulmonar/diagnóstico por imagen , Arteria Pulmonar/fisiopatología , Válvula Tricúspide/diagnóstico por imagen , Válvula Tricúspide/fisiopatología , Disfunción Ventricular Derecha/complicaciones , Disfunción Ventricular Derecha/fisiopatología , Obstrucción del Flujo Ventricular Externo/diagnóstico por imagen , Obstrucción del Flujo Ventricular Externo/tratamiento farmacológico
19.
Laryngoscope ; 108(9): 1284-90, 1998 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-9738742

RESUMEN

OBJECTIVES: The CO2 laser is the standard for control of recurrent respiratory papillomatosis because of its predictable action on laryngeal tissue. The noncontact neodymium:yttrium aluminum garnet (Nd:YAG) 1064-nm laser is generally not used in the larynx owing to the lack of data on its tissue effects, and its potential lack of safety in the larynx. Combined Nd:YAG and CO2 laser treatments have been used safely in the tracheobronchial tree to eradicate recurrent respiratory papillomas. The objectives of this study were to describe and evaluate a method for applying the noncontact Nd:YAG laser to the larynx, to compare the tissue effects of the Nd:YAG, CO2, and combined Nd:YAG and CO2 lasers in the canine larynx, and to extrapolate canine tissue data to the human. METHODS: The CO2, Nd:YAG, and combined Nd:YAG/CO2 lasers were applied to the glottis in four mongrel dogs. Laryngectomy was performed and the tissue was examined histologically. The nature and degree of tissue injury were analyzed relative to laser type and energy data. RESULTS: In the canine larynx, the CO2 laser vaporized the surface epithelium and caused varying degrees of edema and necrosis of the lamina propria. The Nd:YAG laser did not cause ulceration but did show a greater degree of thermal damage to the lamina propria. Combined Nd:YAG/CO2 applications resulted in separation of the perimysial fibers from the muscle fibers of the vocalis muscle. CONCLUSION: These findings suggest that the noncontact Nd:YAG laser can be applied in a controlled fashion to the canine larynx at appropriate power densities. Anatomical differences between human and canine larynges are considered. Extrapolation to humans is proposed.


Asunto(s)
Glotis/cirugía , Neoplasias Laríngeas/cirugía , Terapia por Láser/métodos , Papiloma/cirugía , Animales , Dióxido de Carbono , Perros , Relación Dosis-Respuesta en la Radiación , Femenino , Glotis/patología , Neoplasias Laríngeas/patología , Laringectomía/métodos , Papiloma/patología
20.
Obstet Gynecol Clin North Am ; 25(3): 623-37, 1998 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-9710915

RESUMEN

Ultrasonographic evaluation of the uterine cervix has been shown to help predict patients who may be at an increased risk for preterm delivery. The use of ultrasound in at-risk patients may improve the selection of those needing obstetric intervention, which therefore, may improve outcome and lower overall health care costs. Cervical competence, once thought to be a categorical variable, should now be thought of as a continuous variable, as the shortest cervical lengths are found in those women with a history of very early preterm delivery (> 24 weeks). Adjunctive tests, such as fetal fibronectin Bishop scoring and bacterial vaginosis may help to improve the accuracy of prediction of preterm birth; therefore a multifaceted risk approach to preterm birth is suggested in this article.


Asunto(s)
Cuello del Útero/anomalías , Cuello del Útero/diagnóstico por imagen , Ultrasonografía Prenatal , Diagnóstico Diferencial , Femenino , Humanos , Embarazo , Sensibilidad y Especificidad , Ultrasonografía Prenatal/métodos
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