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1.
Chest ; 165(4): 775-784, 2024 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-38123124

RESUMEN

BACKGROUND: Bronchial thermoplasty (BT) is a treatment for patients with poorly controlled, severe asthma. However, predictors of treatment response to BT are defined poorly. RESEARCH QUESTION: Do baseline radiographic and clinical characteristics exist that predict response to BT? STUDY DESIGN AND METHODS: We conducted a longitudinal prospective cohort study of participants with severe asthma receiving BT across eight academic medical centers. Participants received three separate BT treatments and were monitored at 3-month intervals for 1 year after BT. Similar to prior studies, a positive response to BT was defined as either improvement in Asthma Control Test results of ≥ 3 or Asthma Quality of Life Questionnaire of ≥ 0.5. Regression analyses were used to evaluate the association between pretreatment clinical and quantitative CT scan measures with subsequent BT response. RESULTS: From 2006 through 2017, 88 participants received BT, with 70 participants (79.5%) identified as responders by Asthma Control Test or Asthma Quality of Life Questionnaire criteria. Responders were less likely to undergo an asthma-related ICU admission in the prior year (3% vs 25%; P = .01). On baseline quantitative CT imaging, BT responders showed less air trapping percentage (OR, 0.90; 95% CI, 0.82-0.99; P = .03), a greater Jacobian determinant (OR, 1.49; 95% CI, 1.05-2.11), greater SD of the Jacobian determinant (OR, 1.84; 95% CI, 1.04-3.26), and greater anisotropic deformation index (OR, 3.06; 95% CI, 1.06-8.86). INTERPRETATION: To our knowledge, this is the largest study to evaluate baseline quantitative CT imaging and clinical characteristics associated with BT response. Our results show that preservation of normal lung expansion, indicated by less air trapping, a greater magnitude of isotropic expansion, and greater within-lung spatial variation on quantitative CT imaging, were predictors of future BT response. TRIAL REGISTRY: ClinicalTrials.gov; No.: NCT01185275; URL: www. CLINICALTRIALS: gov.


Asunto(s)
Asma , Termoplastia Bronquial , Humanos , Asma/tratamiento farmacológico , Termoplastia Bronquial/efectos adversos , Termoplastia Bronquial/métodos , Estudios Longitudinales , Estudios Prospectivos , Calidad de Vida , Tomografía Computarizada por Rayos X
2.
Radiology ; 304(2): 450-459, 2022 08.
Artículo en Inglés | MEDLINE | ID: mdl-35471111

RESUMEN

Background Clustering key clinical characteristics of participants in the Severe Asthma Research Program (SARP), a large, multicenter prospective observational study of patients with asthma and healthy controls, has led to the identification of novel asthma phenotypes. Purpose To determine whether quantitative CT (qCT) could help distinguish between clinical asthma phenotypes. Materials and Methods A retrospective cross-sectional analysis was conducted with the use of qCT images (maximal bronchodilation at total lung capacity [TLC], or inspiration, and functional residual capacity [FRC], or expiration) from the cluster phenotypes of SARP participants (cluster 1: minimal disease; cluster 2: mild, reversible; cluster 3: obese asthma; cluster 4: severe, reversible; cluster 5: severe, irreversible) enrolled between September 2001 and December 2015. Airway morphometry was performed along standard paths (RB1, RB4, RB10, LB1, and LB10). Corresponding voxels from TLC and FRC images were mapped with use of deformable image registration to characterize disease probability maps (DPMs) of functional small airway disease (fSAD), voxel-level volume changes (Jacobian), and isotropy (anisotropic deformation index [ADI]). The association between cluster assignment and qCT measures was evaluated using linear mixed models. Results A total of 455 participants were evaluated with cluster assignments and CT (mean age ± SD, 42.1 years ± 14.7; 270 women). Airway morphometry had limited ability to help discern between clusters. DPM fSAD was highest in cluster 5 (cluster 1 in SARP III: 19.0% ± 20.6; cluster 2: 18.9% ± 13.3; cluster 3: 24.9% ± 13.1; cluster 4: 24.1% ± 8.4; cluster 5: 38.8% ± 14.4; P < .001). Lower whole-lung Jacobian and ADI values were associated with greater cluster severity. Compared to cluster 1, cluster 5 lung expansion was 31% smaller (Jacobian in SARP III cohort: 2.31 ± 0.6 vs 1.61 ± 0.3, respectively, P < .001) and 34% more isotropic (ADI in SARP III cohort: 0.40 ± 0.1 vs 0.61 ± 0.2, P < .001). Within-lung Jacobian and ADI SDs decreased as severity worsened (Jacobian SD in SARP III cohort: 0.90 ± 0.4 for cluster 1; 0.79 ± 0.3 for cluster 2; 0.62 ± 0.2 for cluster 3; 0.63 ± 0.2 for cluster 4; and 0.41 ± 0.2 for cluster 5; P < .001). Conclusion Quantitative CT assessments of the degree and intraindividual regional variability of lung expansion distinguished between well-established clinical phenotypes among participants with asthma from the Severe Asthma Research Program study. © RSNA, 2022 Online supplemental material is available for this article. See also the editorial by Verschakelen in this issue.


Asunto(s)
Asma , Asma/diagnóstico por imagen , Estudios Transversales , Femenino , Humanos , Pulmón/diagnóstico por imagen , Fenotipo , Enfermedad Pulmonar Obstructiva Crónica , Estudios Retrospectivos , Tomografía Computarizada por Rayos X/métodos
3.
J Allergy Clin Immunol ; 148(3): 752-762, 2021 09.
Artículo en Inglés | MEDLINE | ID: mdl-33577895

RESUMEN

BACKGROUND: Currently, there is limited knowledge regarding which imaging assessments of asthma are associated with accelerated longitudinal decline in lung function. OBJECTIVES: We aimed to assess whether quantitative computed tomography (qCT) metrics are associated with longitudinal decline in lung function and morbidity in asthma. METHODS: We analyzed 205 qCT scans of adult patients with asthma and calculated baseline markers of airway remodeling, lung density, and pointwise regional change in lung volume (Jacobian measures) for each participant. Using multivariable regression models, we then assessed the association of qCT measurements with the outcomes of future change in lung function, future exacerbation rate, and changes in validated measurements of morbidity. RESULTS: Greater baseline wall area percent (ß = -0.15 [95% CI = -0.26 to -0.05]; P < .01), hyperinflation percent (ß = -0.25 [95% CI = -0.41 to -0.09]; P < .01), and Jacobian gradient measurements (cranial-caudal ß = 10.64 [95% CI = 3.79-17.49]; P < .01; posterior-anterior ß = -9.14, [95% CI = -15.49 to -2.78]; P < .01) were associated with more severe future lung function decline. Additionally, greater wall area percent (rate ratio = 1.06 [95% CI = 1.01-1.10]; P = .02) and air trapping percent (rate ratio =1.01 [95% CI = 1.00-1.02]; P = .03), as well as lower decline in the Jacobian determinant mean (rate ratio = 0.58 [95% CI = 0.41-0.82]; P < .01) and Jacobian determinant standard deviation (rate ratio = 0.52 [95% CI = 0.32-0.85]; P = .01), were associated with a greater rate of future exacerbations. However, imaging metrics were not associated with clinically meaningful changes in scores on validated asthma morbidity questionnaires. CONCLUSIONS: Baseline qCT measures of more severe airway remodeling, more small airway disease and hyperinflation, and less pointwise regional change in lung volumes were associated with future lung function decline and asthma exacerbations.


Asunto(s)
Asma/diagnóstico por imagen , Pulmón/diagnóstico por imagen , Adulto , Remodelación de las Vías Aéreas (Respiratorias) , Asma/patología , Asma/fisiopatología , Progresión de la Enfermedad , Femenino , Volumen Espiratorio Forzado , Humanos , Pulmón/patología , Pulmón/fisiopatología , Masculino , Persona de Mediana Edad , Pronóstico , Tomografía Computarizada por Rayos X
5.
J Allergy Clin Immunol Pract ; 7(5): 1379-1392, 2019.
Artículo en Inglés | MEDLINE | ID: mdl-31076056

RESUMEN

Patients with uncontrolled severe persistent asthma have greater morbidity, greater use of health care resources, and more impairment in health-related quality of life when compared with their peers with well-controlled disease. Fortunately, since the introduction of biological therapeutics, patients with severe eosinophilic asthma now have beneficial treatment options that they did not have just a few years ago. In addition to anti-IgE therapy for allergic asthma, 3 new biological therapeutics targeting IL-5 and 1 targeting IL-4 and IL-13 signaling have recently been approved by the Food and Drug Administration for the treatment of severe eosinophilic asthma, and approval of more biological therapeutics is on the horizon. These medications decrease the frequency of asthma exacerbations, improve lung function, reduce corticosteroid usage, and improve health-related quality of life. This article reviews the mechanisms of action, specific indications, benefits, and side effects of each of the approved biological therapies for asthma. Furthermore, this article reviews how a clinician could use specific patient characteristics to decide which biologic treatment may be optimal for a given patient.


Asunto(s)
Antiasmáticos/uso terapéutico , Asma/tratamiento farmacológico , Productos Biológicos/uso terapéutico , Eosinofilia/tratamiento farmacológico , Corticoesteroides/uso terapéutico , Anticuerpos Monoclonales Humanizados/uso terapéutico , Asma/inmunología , Asma/fisiopatología , Citocinas/inmunología , Progresión de la Enfermedad , Eosinofilia/inmunología , Eosinofilia/fisiopatología , Humanos , Linfocitos/inmunología , Omalizumab/uso terapéutico , Índice de Severidad de la Enfermedad , Células Th2/inmunología
6.
J AAPOS ; 23(2): 96.e1-96.e7, 2019 04.
Artículo en Inglés | MEDLINE | ID: mdl-30826384

RESUMEN

PURPOSE: To evaluate the incidence of surgical intervention in pediatric intracranial hypertension (IH), evaluate the visual outcomes of surgically managed patients, and identify potential predictors for surgical intervention. METHODS: The medical records of patients with primary and secondary IH at Nationwide Children's Hospital from 2010 to 2017 were reviewed retrospectively. Presenting characteristics of medically and surgically managed patients were compared, and the clinical courses of surgically managed patients were reviewed. RESULTS: A total of 129 medically and 14 surgically managed patients were included. The surgical incidence was 9.8%. Final visual acuity in 27 of 28 surgically managed eyes was 20/25 or better. In combined primary and secondary IH patients, elevations in body mass index (BMI; OR = 1.06; 95% CI, 1.01-1.11; P = 0.022) and lumbar puncture opening pressures ≥52 cm H2O (OR = 6.17; 95% CI, 1.93-19.67; P = 0.002) were significantly associated with the likelihood of surgical intervention when assessed by univariate logistic regression; grade of papilledema >2 was of marginal significance. After controlling for BMI, a lumbar puncture opening pressure of ≥52 cm H2O was more likely to result in surgery (adjusted OR = 4.69; 95% CI = 1.39-15.98; P = 0.013). CONCLUSIONS: Most pediatric IH can be treated medically. Patients with lumbar puncture opening pressures ≥52 cm H2O at the time of diagnosis are at a higher risk of surgical intervention and should be monitored closely. Elevations in presenting BMI and grade of papilledema may also increase the odds of surgery.


Asunto(s)
Hipertensión Intracraneal/cirugía , Adolescente , Antihipertensivos , Índice de Masa Corporal , Niño , Preescolar , Femenino , Humanos , Incidencia , Lactante , Recién Nacido , Hipertensión Intracraneal/epidemiología , Hipertensión Intracraneal/etiología , Masculino , Papiledema/epidemiología , Papiledema/etiología , Papiledema/fisiopatología , Estudios Retrospectivos , Punción Espinal , Tiempo de Tratamiento , Resultado del Tratamiento , Estados Unidos/epidemiología , Trastornos de la Visión/epidemiología , Trastornos de la Visión/etiología , Trastornos de la Visión/fisiopatología , Agudeza Visual/fisiología , Campos Visuales/fisiología
7.
Am J Respir Crit Care Med ; 199(4): 433-445, 2019 02 15.
Artículo en Inglés | MEDLINE | ID: mdl-30525902

RESUMEN

Patients with severe uncontrolled asthma have disproportionally high morbidity and healthcare utilization as compared with their peers with well-controlled disease. Although treatment options for these patients were previously limited, with unacceptable side effects, the emergence of biologic therapies for the treatment of asthma has provided promising targeted therapy for these patients. Biologic therapies target specific inflammatory pathways involved in the pathogenesis of asthma, particularly in patients with an endotype driven by type 2 (T2) inflammation. In addition to anti-IgE therapy that has improved outcomes in allergic asthma for more than a decade, three anti-IL-5 biologics and one anti-IL-4R biologic have recently emerged as promising treatments for T2 asthma. These targeted therapies have been shown to reduce asthma exacerbations, improve lung function, reduce oral corticosteroid use, and improve quality of life in appropriately selected patients. In addition to the currently approved biologic agents, several biologics targeting upstream inflammatory mediators are in clinical trials, with possible approval on the horizon. This article reviews the mechanism of action, indications, expected benefits, and side effects of each of the currently approved biologics for severe uncontrolled asthma and discusses promising therapeutic targets for the future.


Asunto(s)
Antiasmáticos/uso terapéutico , Asma/tratamiento farmacológico , Productos Biológicos/uso terapéutico , Anticuerpos Monoclonales Humanizados/uso terapéutico , Humanos , Omalizumab/uso terapéutico
8.
Ophthalmology ; 125(12): 1961-1966, 2018 12.
Artículo en Inglés | MEDLINE | ID: mdl-29887334

RESUMEN

PURPOSE: Intravitreal bevacizumab is increasingly used to treat severe retinopathy of prematurity (ROP), but it enters the bloodstream, and there is concern that it may alter development of other organs. Previously we reported short-term outcomes of 61 infants enrolled in a dose de-escalation study, and we report the late recurrences and additional treatments. DESIGN: Masked, multicenter, dose de-escalation study. PARTICIPANTS: A total of 61 premature infants with type 1 ROP. METHODS: If type 1 ROP was bilateral at enrollment, then the study eye was randomly selected. In the study eye, bevacizumab intravitreal injections were given at de-escalating doses of 0.25 mg, 0.125 mg, 0.063 mg, or 0.031 mg; if needed, fellow eyes received 1 dose level higher: 0.625 mg, 0.25 mg, 0.125 mg, or 0.063 mg, respectively. After 4 weeks, additional treatment was at the discretion of the investigator. MAIN OUTCOME MEASURES: Early and late ROP recurrences, additional treatments, and structural outcomes after 6 months. RESULTS: Of 61 study eyes, 25 (41%; 95% confidence interval [CI], 29%-54%) received additional treatment: 3 (5%; 95% CI, 1%-14%) for early failure (within 4 weeks), 11 (18%; 95% CI, 9%-30%) for late recurrence of ROP (after 4 weeks), and 11 (18%; 95% CI, 9%-30%) for persistent avascular retina. Re-treatment for early failure or late recurrence occurred in 2 of 11 eyes (18%; 95% CI, 2%-52%) treated with 0.25 mg, 4 of 16 eyes (25%; 95% CI, 7%-52%) treated with 0.125 mg, 8 of 24 eyes (33%; 95% CI, 16%-55%) treated with 0.063 mg, and 0 (0%; 95% CI, 0%-31%) of 10 eyes treated with 0.031 mg. By 6 months corrected age, 56 of 61 study eyes had regression of ROP with normal posterior poles, 1 study eye had developed a Stage 5 retinal detachment, and 4 infants had died of preexisting medical conditions. CONCLUSIONS: Retinal structural outcomes are very good after low-dose bevacizumab treatment for ROP, although many eyes received additional treatment.


Asunto(s)
Inhibidores de la Angiogénesis/administración & dosificación , Bevacizumab/administración & dosificación , Retinopatía de la Prematuridad/tratamiento farmacológico , Terapia Combinada , Método Doble Ciego , Femenino , Edad Gestacional , Humanos , Lactante , Recién Nacido de Bajo Peso , Recién Nacido , Recien Nacido Prematuro , Inyecciones Intravítreas , Coagulación con Láser , Masculino , Recurrencia , Retina/fisiopatología , Retinopatía de la Prematuridad/diagnóstico , Retinopatía de la Prematuridad/fisiopatología , Retratamiento , Factor A de Crecimiento Endotelial Vascular/antagonistas & inhibidores
9.
JAMA Ophthalmol ; 136(8): 895-903, 2018 08 01.
Artículo en Inglés | MEDLINE | ID: mdl-29879287

RESUMEN

Importance: There is a lack of literature describing the incidence of pediatric acute ocular injury and associated likelihood of vision loss in the United States. Understanding national pediatric eye injury trends may inform future efforts to prevent ocular trauma. Objective: To characterize pediatric acute ocular injury in the United States using data from a stratified, national sample of emergency department (ED) visits. Design, Setting, and Participants: A retrospective cohort study was conducted. Study participants received care at EDs included in the 2006 to 2014 Nationwide Emergency Department Sample, comprising 376 040 children aged 0 to 17 years with acute traumatic ocular injuries. Data were analyzed from June 2016 to March 2018. Exposures: International Classification of Diseases, Ninth Revision, Clinical Modification diagnosis codes and external-cause-of-injury codes identified children with acute ocular injuries. Main Outcomes and Measures: Demographic and clinical characteristics of children with acute traumatic ocular injuries were collected and temporal trends in the incidence of ocular injuries by age, risk of vision loss, and mechanism of injury were explored. Results: In 2014, there were an estimated 163 431 (95% CI, 151 235-175 627) ED visits for pediatric acute ocular injury. Injured children were more often male (63.0%; 95% CI, 62.5-63.5) and in the youngest age category (birth to 4 years, 35.3%; 95% CI, 34.4-36.2; vs 10-14 years, 20.6%; 95% CI, 20.1-21.1). Injuries commonly resulted from a strike to the eye (22.5%; 95% CI, 21.3-23.8) and affected the adnexa (43.7%; 95% CI, 42.7-44.8). Most injuries had a low risk for vision loss (84.2%; 95% CI, 83.5-85.0), with only 1.3% (95% CI, 1.1-1.5) of injuries being high risk. Between 2006 and 2014, pediatric acute ocular injuries decreased by 26.1% (95% CI, -27.0 to -25.0). This decline existed across all patient demographic characteristics, injury patterns, and vision loss categories and for most mechanisms of injury. There were increases during the study in injuries related to sports (12.8%; 95% CI, 5.4-20.2) and household/domestic activities (20.7%; 95% CI, 16.2-25.2). The greatest decrease in high-risk injuries occurred with motor vehicle crashes (-79.8%; 95% CI, -85.8 to -74.9) and guns (-68.5%; 95% CI, -73.5 to -63.6). Conclusions and Relevance: This study demonstrated a decline in pediatric acute ocular injuries in the United States between 2006 and 2014. However, pediatric acute ocular injuries continue to be prevalent, and understanding these trends can help establish future prevention strategies.


Asunto(s)
Servicio de Urgencia en Hospital/estadística & datos numéricos , Lesiones Oculares/epidemiología , Enfermedad Aguda , Adolescente , Distribución por Edad , Niño , Preescolar , Bases de Datos Factuales/tendencias , Femenino , Humanos , Incidencia , Lactante , Recién Nacido , Clasificación Internacional de Enfermedades , Masculino , Pediatría/estadística & datos numéricos , Estudios Retrospectivos , Factores de Riesgo , Distribución por Sexo , Estados Unidos/epidemiología
10.
J AAPOS ; 22(4): 333, 2018 08.
Artículo en Inglés | MEDLINE | ID: mdl-29777768
11.
Hosp Pract (1995) ; 46(1): 37-42, 2018 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-29285946

RESUMEN

BACKGROUND: Cancer of unknown primary is the fourth most common cause of cancer death in the United Kingdom. National guidance in 2010 recommended the establishment of a dedicated unknown primary team to facilitate targeted investigation and symptom control. A service development project was undertaken to identify those affected by malignancy of unknown origin and institute a pathway for coordinating their care led by a palliative physician. METHOD: In order to describe the patient population and illness trajectory and to assess the effect of the new pathway on the clinical outcomes we used a retrospective and prospective comparative case notes survey to identify the pre- and post-pathway population. This took place in secondary care. Inclusion criteria were patients with metastatic disease with no known primary; exclusion criteria were where the site of metastasis was so suggestive of a primary that it would be managed as per that disease process. 88 patients were included. RESULTS: Mean age was 72.5 years. The mean survival time from presentation was 81.8 days. There was no difference pre or during pathway implementation in age, performance status or survival time. There was no reduction in the numbers referred for tumour directed therapy. There was a non-statistically significant reduction in the number who died in hospital during the pathway implementation. CONCLUSIONS: This study suggests having a metastatic malignancy of unknown primary origin service led by a palliative physician does not reduce the number referred for tumour directed therapy. It also adds evidence of the poor prognosis and thus the need for early palliative care input.


Asunto(s)
Neoplasias Primarias Desconocidas/mortalidad , Neoplasias Primarias Desconocidas/terapia , Cuidados Paliativos/organización & administración , Grupo de Atención al Paciente/organización & administración , Adulto , Anciano , Anciano de 80 o más Años , Femenino , Humanos , Estimación de Kaplan-Meier , Masculino , Persona de Mediana Edad , Pronóstico , Evaluación de Programas y Proyectos de Salud , Estudios Retrospectivos , Medicina Estatal , Reino Unido
12.
J AAPOS ; 21(6): 492-495.e2, 2017 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-29081363

RESUMEN

BACKGROUND: The modified Dandy criteria and the newer diagnostic criteria for pseudotumor cerebri syndrome (PTCS) are both used to diagnose intracranial hypertension (IH). In comparison to the modified Dandy criteria, the PTCS criteria stratify the IH diagnosis into definite, probable, and suggested categories, exclude clinical symptoms, and use radiologic evidence for diagnosis. There is a lack of consensus on which criteria should be used in the pediatric population. The purpose of this study was to compare the diagnostic criteria for PTCS to the modified Dandy criteria and to identify limitations within both sets of criteria. METHODS: The PTCS criteria were retrospectively applied to 50 patients originally diagnosed with IH under the modified Dandy criteria. RESULTS: Of the 50 patients, 31 (62%) met diagnostic criteria for definite PTCS, 10 (20%) met criteria for probable PTCS, and 9 patients (18%) failed to meet sufficient PTCS criteria for diagnosis. CONCLUSIONS: Although the PTCS criteria use objective data to make the IH diagnosis, we found subjective symptoms to be useful indicators of disease in this group of patients. Additionally, distinguishing probable from definite IH may not have clinical relevance, because both groups were treated similarly. The absence of radiographic evidence of IH should not preclude a diagnosis of the condition, as it was present in a minority of patients included in this study. Further research is needed to clarify the disease process in patients who present with signs and symptoms of elevated intracranial pressure but lack ocular pathology.


Asunto(s)
Técnicas de Diagnóstico Oftalmológico/normas , Seudotumor Cerebral/diagnóstico , Adolescente , Niño , Preescolar , Enfermedades de los Nervios Craneales/diagnóstico , Femenino , Humanos , Presión Intracraneal , Imagen por Resonancia Magnética , Masculino , Obesidad , Papiledema/diagnóstico , Estudios Retrospectivos , Adulto Joven
13.
Biochem Biophys Res Commun ; 449(4): 444-8, 2014 Jul 11.
Artículo en Inglés | MEDLINE | ID: mdl-24853807

RESUMEN

The human oncogene SCL/TAL1 interrupting locus (Stil) is highly conserved in all vertebrate species. In humans, the expression of Stil is involved in cancer cell survival, apoptosis and proliferation. In this research, we investigated the roles of Stil expression in cell proliferation of mammalian dopaminergic (DA) PC12 cells. Stil functions through the Sonic hedgehog (Shh) signal transduction pathway. Co-immunoprecipitation tests revealed that STIL interacts with Shh downstream components, which include SUFU and GLI1. By examining the expression of Stil, Gli1, CyclinD2 (cell-cycle marker) and PCNA (proliferating cell nuclear antigen), we found that up-regulation of Stil expression (transfection with overexpression plasmids) increased Shh signaling transduction and PC12 cell proliferation, whereas down-regulation of Stil expression (by shRNA) inhibited Shh signaling transduction, and thereby decreased PC12 cell proliferation. Transient transfection of PC12 cells with Stil knockdown or overexpression plasmids did not affect PC12 cell neural differentiation, further indicating the specific roles of Stil in cell proliferation. The results from this research suggest that Stil may serve as a bio-marker for neurological diseases involved in DA neurons, such as Parkinson's disease.


Asunto(s)
Neuronas Dopaminérgicas/fisiología , Péptidos y Proteínas de Señalización Intracelular/metabolismo , Transducción de Señal , Animales , Diferenciación Celular , Proliferación Celular , Neuronas Dopaminérgicas/citología , Proteínas Hedgehog/fisiología , Humanos , Células PC12 , Ratas , Proteínas Represoras/metabolismo , Factores de Transcripción/metabolismo , Proteína con Dedos de Zinc GLI1
14.
Pediatr Clin North Am ; 61(3): 621-30, 2014 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-24852157

RESUMEN

There is no standard meaning of the term "vision therapy", and for this reason it is often a controversial topic between some members of the ophthalmic and optometric community. Most pediatric ophthalmologists avoid using the term because it is nonspecific. Convergence Insufficiency (CI) is a binocular visual problem that causes problems and symptoms with near fixation. There is consensus among eye care professionals that convergence therapy is effective in treating CI. Convergence therapy is not effective in treating learning disabilities, but can sometimes relieve symptoms that might be a barrier to reading.


Asunto(s)
Trastornos de la Motilidad Ocular/complicaciones , Niño , Convergencia Ocular/fisiología , Técnicas de Diagnóstico Oftalmológico , Humanos , Trastornos de la Motilidad Ocular/diagnóstico , Trastornos de la Motilidad Ocular/terapia
16.
Ann Fam Med ; 10(1): 6-14, 2012.
Artículo en Inglés | MEDLINE | ID: mdl-22230825

RESUMEN

PURPOSE: Medication nonadherence, inconsistent patient self-monitoring, and inadequate treatment adjustment exacerbate poor disease control. In a collaborative, team-based, care management program for complex patients (TEAMcare), we assessed patient and physician behaviors (medication adherence, self-monitoring, and treatment adjustment) in achieving better outcomes for diabetes, coronary heart disease, and depression. METHODS: A randomized controlled trial was conducted (2007-2009) in 14 primary care clinics among 214 patients with poorly controlled diabetes (glycated hemoglobin [HbA(1c)] ≥8.5%) or coronary heart disease (blood pressure >140/90 mm Hg or low-density lipoprotein cholesterol >130 mg/dL) with coexisting depression (Patient Health Questionnaire-9 score ≥10). In the TEAMcare program, a nurse care manager collaborated closely with primary care physicians, patients, and consultants to deliver a treat-to-target approach across multiple conditions. Measures included medication initiation, adjustment, adherence, and disease self-monitoring. RESULTS: Pharmacotherapy initiation and adjustment rates were sixfold higher for antidepressants (relative rate [RR] = 6.20; P <.001), threefold higher for insulin (RR = 2.97; P <.001), and nearly twofold higher for antihypertensive medications (RR = 1.86, P <.001) among TEAMcare relative to usual care patients. Medication adherence did not differ between the 2 groups in any of the 5 therapeutic classes examined at 12 months. TEAMcare patients monitored blood pressure (RR = 3.20; P <.001) and glucose more frequently (RR = 1.28; P = .006). CONCLUSIONS: Frequent and timely treatment adjustment by primary care physicians, along with increased patient self-monitoring, improved control of diabetes, depression, and heart disease, with no change in medication adherence rates. High baseline adherence rates may have exerted a ceiling effect on potential improvements in medication adherence.


Asunto(s)
Utilización de Medicamentos/estadística & datos numéricos , Cumplimiento de la Medicación/estadística & datos numéricos , Grupo de Atención al Paciente , Autocuidado/métodos , Adulto , Anciano , Anciano de 80 o más Años , Antidepresivos/uso terapéutico , Antihipertensivos/uso terapéutico , Enfermedades Cardiovasculares/tratamiento farmacológico , Comorbilidad , Trastorno Depresivo/tratamiento farmacológico , Diabetes Mellitus/tratamiento farmacológico , Femenino , Humanos , Hipoglucemiantes/uso terapéutico , Insulina/uso terapéutico , Masculino , Persona de Mediana Edad , Relaciones Médico-Paciente , Práctica Profesional , Análisis de Regresión , Autocuidado/estadística & datos numéricos
18.
J AAPOS ; 15(3): 230-3, 2011 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-21665501

RESUMEN

PURPOSE: To investigate the effectiveness of 3 surgical preparation techniques in decreasing bacterial contamination of needles and suture material during strabismus surgery. METHODS: Consecutive patients requiring 2-muscle strabismus surgery were randomized into 1 of 3 groups. In Group A, patients' periocular skin and bulbar conjunctivae underwent preparation with 5% povidone-iodine; the drape was placed without regard to eyebrows; and an open wire-loop lid speculum was used. Group B patients underwent the same preparation as Group A patients; however, the eyelashes and eyebrows were scrubbed with 5% povidone-iodine on cotton tip applicators, and the drape was placed to exclude the eyebrows from the surgical field. Group C patients underwent the same preparation as Group B patients; however, a bladed lid speculum was used during surgery to exclude some of the eyelashes from the surgical field. After the procedure, all needles and suture materials were sent separately for aerobic culture. The data were analyzed for differences in contamination rates between the groups. RESULTS: Of 77 patients, 24 (31.4%) had either a needle and/or suture contaminant. Groups A, B, and C had mean contamination rates of 29.6%, 34.6%, and 29.2%, respectively. There was no significant statistical variation in contamination among the 3 groups. The most common organism identified was a coagulase-negative staphylococcus strain. CONCLUSIONS: More meticulous sterile preparation of the surgical field did not result in a meaningful reduction in suture or needle contamination rates during strabismus surgery.


Asunto(s)
Carga Bacteriana , Contaminación de Equipos/prevención & control , Agujas/microbiología , Procedimientos Quirúrgicos Oftalmológicos/métodos , Estrabismo/cirugía , Suturas/microbiología , Antiinfecciosos Locales/administración & dosificación , Bacterias/aislamiento & purificación , Endoftalmitis/prevención & control , Cejas/efectos de los fármacos , Cejas/microbiología , Pestañas/efectos de los fármacos , Pestañas/microbiología , Humanos , Músculos Oculomotores/cirugía , Complicaciones Posoperatorias/prevención & control , Povidona Yodada/administración & dosificación
19.
J AAPOS ; 15(2): 140-3, 2011 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-21458340

RESUMEN

PURPOSE: To determine the efficacy of a home-based computer orthoptic program to treat symptomatic convergence insufficiency. METHODS: A retrospective review of consecutive patients with symptomatic convergence insufficiency treated with a home-based computer orthoptic program was performed. Symptomatic convergence insufficiency was defined as: near point of convergence (NPC) >6 cm, decreased positive fusional vergence, exophoria at near at least 4(Δ) greater than at far, and documented complaints of asthenopia, diplopia, or headaches with reading or near work. The Computer Orthoptics CVS program was used for this study. Before beginning the computer orthoptic program, patients with an NPC >50 cm were given 4 base-in prisms and push-up exercises (NPC exercises with an accommodative target) for 2 weeks. RESULTS: A total of 42 patients were included. Mean treatment duration was 12.6 weeks; mean follow-up, 8.5 months. Of the 42 patients, 35 were treated with the home-based computer orthoptic program and push-up exercises; the remaining 7 only used the computer orthoptic program. Because of a remote NPC, 5 patients were given base-in Fresnel prism before starting treatment. Baseline mean NPC was 24.2 cm; posttreatment mean NPC improved to 5.6 cm: 39 patients (92.8%) achieved an NPC of ≤6 cm (p < 0.001). Positive fusional vergence improved in 39 patients (92.8%). Fourteen patients reduced their near exophoria by ≥5(Δ). A total of 27 patients (64.2%) reported resolution of symptoms after treatment. CONCLUSIONS: In our study, home-based computer orthoptic exercises reduced symptoms and improved NPC and fusional amplitudes. The computer orthoptic program is an effective option for treating symptomatic convergence insufficiency.


Asunto(s)
Convergencia Ocular , Terapia por Ejercicio , Estrabismo/terapia , Terapia Asistida por Computador , Acomodación Ocular/fisiología , Adolescente , Niño , Preescolar , Femenino , Servicios de Atención de Salud a Domicilio , Humanos , Masculino , Ortóptica/métodos , Estudios Retrospectivos , Resultado del Tratamiento , Visión Binocular/fisiología
20.
J Ambul Care Manage ; 34(2): 152-62, 2011.
Artículo en Inglés | MEDLINE | ID: mdl-21415613

RESUMEN

Patients with poorly controlled diabetes, coronary heart disease, and depression have an increased risk of adverse outcomes. In a randomized, controlled trial, we tested an intervention designed to improve disease control outcomes for diabetes and/or heart disease and coexisting depression. Patients with one or more parameters of poor medical disease control (ie, HbA1c ≥8.5, or SBP >140, or LDL >130) and a Patient Health Questionnaire-9 (PHQ-9) ≥10 were randomized to the TEAMcare intervention or usual care (N = 214). This article will describe the TEAMcare health services model that has been shown to improve quality of care and medical and psychiatric outcomes.


Asunto(s)
Enfermedades Cardiovasculares/tratamiento farmacológico , Conducta Cooperativa , Depresión/tratamiento farmacológico , Diabetes Mellitus/tratamiento farmacológico , Grupo de Atención al Paciente/organización & administración , Antidepresivos/uso terapéutico , Comorbilidad , Femenino , Humanos , Masculino , Persona de Mediana Edad , Dimensión del Dolor , Educación del Paciente como Asunto , Atención Primaria de Salud , Conducta de Reducción del Riesgo , Autocuidado , Encuestas y Cuestionarios
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