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1.
J Allergy Clin Immunol ; 140(1): 162-169.e2, 2017 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-27826098

RESUMEN

BACKGROUND: Few data are available to assist clinicians with decisions regarding long-term use of asthma therapies, including omalizumab. OBJECTIVE: We sought to evaluate the benefit and persistence of response in subjects continuing or withdrawing from long-term omalizumab treatment. METHODS: Evaluating the Xolair Persistency Of Response After Long-Term Therapy (XPORT) was a randomized, double-blind, placebo-controlled withdrawal study that included subjects with moderate-to-severe persistent asthma receiving long-term omalizumab. Subjects were randomized by using a hierarchical dynamic randomization scheme to continue their same dose of omalizumab or withdraw to placebo and were then followed every 4 weeks for 1 year. The primary outcome was any protocol-defined severe asthma exacerbation. The secondary outcome was time to first protocol-defined severe asthma exacerbation. Exploratory outcomes included changes in Asthma Control Questionnaire and Asthma Control Test scores. RESULTS: Significantly more subjects in the omalizumab group (67%) had no protocol-defined exacerbation than in the placebo group (47.7%); an absolute difference of 19.3% (95% CI, 5.0%, 33.6%) represents a 40.1% relative difference. Time to first protocol-defined exacerbation analysis revealed a significantly different between-group exacerbation pattern that was consistent with the primary analysis. Subjects continuing omalizumab had significantly better asthma control (mean [SD] change from baseline to week 52: Asthma Control Test score, -1.16 [4.14] vs placebo, -2.88 [5.38], P = .0188; Asthma Control Questionnaire score, 0.22 [0.66] vs placebo, 0.63 [1.13], P = .0039). Discontinuation of omalizumab was associated with an increase in free IgE levels and an increase in basophil expression of the high-affinity IgE receptor. No safety concerns were noted. CONCLUSION: Continuation of omalizumab after long-term treatment results in continued benefit, as evidenced by improved symptom control and reduced exacerbation risk.


Asunto(s)
Antiasmáticos/uso terapéutico , Asma/tratamiento farmacológico , Omalizumab/uso terapéutico , Adolescente , Adulto , Anciano , Antiasmáticos/efectos adversos , Asma/sangre , Asma/inmunología , Asma/metabolismo , Método Doble Ciego , Eosinófilos/inmunología , Femenino , Humanos , Inmunoglobulina E/sangre , Recuento de Leucocitos , Masculino , Persona de Mediana Edad , Óxido Nítrico/metabolismo , Omalizumab/efectos adversos , Resultado del Tratamiento , Adulto Joven
2.
Ann Allergy Asthma Immunol ; 119(6): 524-532.e2, 2017 12.
Artículo en Inglés | MEDLINE | ID: mdl-29054589

RESUMEN

BACKGROUND: Patients included in clinical trials do not necessarily reflect the real-world population. OBJECTIVE: To understand the characteristics, including disease and comorbidity burden, of patients with asthma receiving omalizumab in a real-world setting. METHODS: The Prospective Observational Study to Evaluate Predictors of Clinical Effectiveness in Response to Omalizumab (PROSPERO) was a US-based, multicenter, single-arm, and prospective study. Patients (≥12 years of age) with allergic asthma initiating omalizumab treatment based on physician-assessed need were included and followed for 12 months. Exacerbations, health care use, adverse events, and Asthma Control Test (ACT) scores were assessed monthly. Biomarkers (blood eosinophils, fractional exhaled nitric oxide, and periostin) were evaluated and patient-reported outcomes (Asthma Quality of Life Questionnaire for 12 Years and Older [AQLQ+12] and Work Productivity and Activity Impairment: Asthma questionnaire [WPAI:Asthma]) were completed at baseline and months 6 and 12. The Mini Rhinoconjunctivitis Quality of Life Questionnaire (MiniRQLQ) was completed at baseline and 12 months. RESULTS: Most of the 806 enrollees (91.4%) were adults (mean age 47.3 years, SD 17.4), white (70.3%), and female (63.5%). Allergic comorbidity was frequently reported (84.2%), as were hypertension (35.5%) and depression (22.1%). In the 12 months before study entry, 22.1% of patients reported at least 1 asthma-related hospitalization, 60.7% reported at least 2 exacerbations, and 83.3% reported ACT scores no higher than 19 (uncontrolled asthma). Most patients had low biomarker levels based on prespecified cut-points. Baseline mean patient-reported outcome scores were 4.0 (SD 1.4) for AQLQ+12, 2.7 (SD 1.4) for MiniRQLQ, and 47.7 (SD 28.9) for WPAI:Asthma percentage of activity impairment and 33.5 (SD 28.7) for percentage of overall work impairment. CONCLUSION: The population initiating omalizumab in PROSPERO reported poorly controlled asthma and a substantial disease burden. TRIAL REGISTRATION: ClinicalTrials.gov Identifier: NCT01922037.


Asunto(s)
Antiasmáticos/uso terapéutico , Anticuerpos Monoclonales Humanizados/uso terapéutico , Asma/tratamiento farmacológico , Omalizumab/uso terapéutico , Calidad de Vida , Actividades Cotidianas , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Antiasmáticos/efectos adversos , Anticuerpos Monoclonales Humanizados/efectos adversos , Biomarcadores/sangre , Moléculas de Adhesión Celular/sangre , Niño , Comorbilidad , Humanos , Inmunoglobulina E/sangre , Recuento de Leucocitos , Persona de Mediana Edad , Omalizumab/efectos adversos , Estudios Prospectivos , Encuestas y Cuestionarios , Resultado del Tratamiento , Adulto Joven
4.
Allergy Asthma Proc ; 32(4): 265-71, 2011.
Artículo en Inglés | MEDLINE | ID: mdl-21781402

RESUMEN

Medical advances have allowed many patients with chronic diseases to lead relatively normal lives, but disparity between patient perceptions of "normal" and therapeutically defined disease control contributes to lowered adherence to treatment. This disconnect is greatest in diseases such as allergic rhinitis (AR) in which patients experience varying symptom severity over time-from asymptomatic periods to episodes of severe illness. This study was designed to evaluate the concept of adherence as applied to patients with AR. We reviewed the published literature. Adherence (or nonadherence) is an active process involving decision making on the part of the patient. Poor adherence with therapy can be the major barrier to achieving disease control, and the "on again, off again" approach to AR treatment embraced purposely by some patients may contribute to symptom lability, disease exacerbations, and higher costs. Evidence from surveys suggests that although specific educational interventions can temporarily improve adherence, in the long term most patients eventually revert to their former behavior. The available data suggest a need to reappraise how we address adherence with therapy in patients with chronic diseases with variable symptoms such as AR. The question is not just whether patient behavior can conform to recommended treatment plans, but whether it should. Experience suggests that successful strategies will be brief, easy to use, and capable of being tailored to individual patients in diverse clinical settings. Increased flexibility with medications is a corollary, particularly when patients are relatively asymptomatic (i.e., considered in control).


Asunto(s)
Antagonistas de los Receptores Histamínicos/uso terapéutico , Cumplimiento de la Medicación , Rinitis Alérgica Perenne/tratamiento farmacológico , Esteroides/uso terapéutico , Toma de Decisiones , Humanos , Cooperación del Paciente , Educación del Paciente como Asunto , Prioridad del Paciente , Rinitis Alérgica Perenne/fisiopatología
5.
Allergy Asthma Proc ; 32(3): 185-92, 2011.
Artículo en Inglés | MEDLINE | ID: mdl-21477457

RESUMEN

Most patients diagnosed with asthma maintain control reasonably well and do not experience asthma exacerbations; however, on average, 30% of patients achieve suboptimal control, have severe or difficult-to-treat asthma, and are relatively nonresponsive to the same medications that achieve and maintain asthma control for most patients. This small patient population of difficult-to-treat or severe asthma accounts for 80% of asthma medical costs. This study was designed to determine the potential U.S. payer cost savings resulting from an asthma specialist incorporating fractionated exhaled nitric oxide (FE(NO)) as an asthma management or monitoring tool to guide treatment of difficult-to-treat asthma patients. We present an annual medical resource use scenario typical of a difficult-to-treat asthma patient as well as five hypothetical scenarios of annual medical resource use for a difficult-to-treat asthma patient being managed with regular FE(NO) measurements in addition to current standard asthma management guidelines. We used the most conservative estimate of the potential asthma cost savings when FE(NO) measurement is used for difficult-to-treat asthma. The most likely clinical scenario assumes a 5% reduction in hospitalization and emergency department costs only. The inclusion of FE(NO) measurements to the asthma management strategy would essentially reach parity with the current standard of care, despite the additional cost of FE(NO) MEASUREMENTS: Additional scenarios were examined, all showed cost and use reduction across all medical resource usage categories. Use of exhaled NO measurement to guide asthma management, maintenance, and control in difficult-to-treat asthma would almost certainly result in cost savings to the payer.


Asunto(s)
Asma/diagnóstico , Asma/economía , Pruebas Respiratorias/métodos , Costo de Enfermedad , Óxido Nítrico/metabolismo , Asma/tratamiento farmacológico , Asma/epidemiología , Progresión de la Enfermedad , Resistencia a Medicamentos , Servicio de Urgencia en Hospital/estadística & datos numéricos , Espiración , Guías como Asunto , Hospitalización/estadística & datos numéricos , Humanos , Estados Unidos
6.
Allergy Asthma Proc ; 32(2): 168-77, 2011.
Artículo en Inglés | MEDLINE | ID: mdl-21352638

RESUMEN

This White Paper presents the Consensus Statements derived from a Special Issues Board (SIB) held in Chicago, IL, in October 2010. The SIB was convened to address the question of whether there is a need for both aerosol and aqueous intranasal steroids (INSs) in the treatment of allergic rhinitis (AR). The faculty reviewed the published record of efficacy and safety of aerosol and aqueous INSs, as well as patient and physician satisfaction and preferences for currently available INSs, and burden of disease. Agreement on unmet needs also included the practice experience of the faculty and their colleagues. The body of evidence indicates that INSs are equally effective and well tolerated for most patients. However, differences exist among current aqueous formulations as well as between these products and their aerosol antecedents, based on the properties of the nasal spray. Aerosol formulations, although no longer available, may be preferred for some patients with specific pathophysiology and may be preferred by some patients based on sensory perception. There are good reasons to expand the currently available options of INSs by having both aerosol and aqueous formulations.


Asunto(s)
Antialérgicos/uso terapéutico , Glucocorticoides/uso terapéutico , Rociadores Nasales , Rinitis Alérgica Perenne/tratamiento farmacológico , Rinitis Alérgica Estacional/tratamiento farmacológico , Administración Intranasal , Aerosoles/uso terapéutico , Química Farmacéutica , Chicago , Humanos , Esteroides/uso terapéutico , Agua/química
7.
J Allergy Clin Immunol Pract ; 7(1): 156-164.e1, 2019 01.
Artículo en Inglés | MEDLINE | ID: mdl-29800752

RESUMEN

BACKGROUND: Omalizumab has demonstrated efficacy in clinical trials of patients with asthma, but real-world data are needed. OBJECTIVE: To assess outcomes after omalizumab initiation in patients with asthma in a real-world setting. METHODS: Patients aged 12 years and older with allergic asthma who were candidates for omalizumab on the basis of physician-assessed need were enrolled in a US-based, prospective, single-arm, 48-week multicenter study, the Prospective Observational Study to Evaluate Predictors of Clinical Effectiveness in Response to Omalizumab. Monthly assessments included exacerbations, health care utilization, asthma control test (ACT), and adverse events. At baseline, 6 months, and end of study, biomarkers (blood eosinophils and fractional exhaled nitric oxide) were collected and spirometry performed. RESULTS: Of 806 enrollees, 801 (99.4%) received omalizumab and 622 (77.2%) completed the study. The exacerbation rate significantly improved from a mean of 3.00 ± 3.28 in the 12 months before baseline to 0.78 ± 1.37 through month 12 (P < .001) and was similar in adults and adolescents; there was a reduction of 81.9% in the percentage of patients with 1 or more hospitalizations. Lung function remained generally unchanged. A mean improvement of 4.4 ± 4.9 in ACT scores was observed. Eighty-seven percent of patients were responders on the basis of clinical improvement in exacerbations, lung function, or ACT scores. Baseline biomarker status was associated with ACT scores and lung function improvement, but the magnitude of this improvement was not clinically relevant. No new safety signals emerged. CONCLUSIONS: Omalizumab initiation in patients with asthma resulted in improved exacerbation rates, reduced hospitalizations, and improved ACT scores compared with pretreatment values, regardless of biomarker status.


Asunto(s)
Antiasmáticos/uso terapéutico , Asma/tratamiento farmacológico , Biomarcadores Farmacológicos , Omalizumab/uso terapéutico , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Asma/diagnóstico , Niño , Toma de Decisiones Clínicas , Progresión de la Enfermedad , Femenino , Humanos , Masculino , Persona de Mediana Edad , Medición de Resultados Informados por el Paciente , Pronóstico , Estudios Prospectivos , Calidad de Vida , Adulto Joven
8.
J Allergy Clin Immunol Pract ; 6(1): 169-176.e2, 2018.
Artículo en Inglés | MEDLINE | ID: mdl-28803186

RESUMEN

BACKGROUND: Data examining associations between asthma exacerbations, triggers, and asthma-related quality of life (QOL) in children with severe/difficult-to-treat asthma are unavailable. OBJECTIVE: To evaluate real-world data on relationships between asthma exacerbations, triggers, and QOL in children using data from TENOR (The Epidemiology and Natural History of Asthma Outcomes and Treatment Regimens), a 3-year observational study of patients with severe/difficult-to-treat asthma, including those aged 6 to 12 years. METHODS: QOL was examined using the Pediatric Asthma Quality of Life Questionnaire (PAQLQ) and defined exacerbations hierarchically (descending order of severity): hospitalization, emergency department visit, steroid burst, no exacerbation, using the highest value from months 6 and 12. One-way ANOVA was used to test for differences in PAQLQ domain scores at month 12 across exacerbation severity, total number of asthma exacerbations, and number of baseline asthma triggers. Mantel-Haenszel chi-square test was used to test the association between the number of triggers and exacerbation hierarchy. RESULTS: Greater severity of asthma exacerbations was associated with significantly (P < .001) lower mean PAQLQ domain scores, indicating poorer QOL. A higher number of asthma exacerbations was associated with significantly (P < .001) lower mean PAQLQ domain scores. PAQLQ scores were significantly lower with higher numbers of baseline triggers. Higher baseline number of asthma triggers was associated with greater severity (P = .05) and number of asthma exacerbations (P < .001). CONCLUSIONS: A higher number of asthma triggers at baseline was associated with greater asthma severity and number of asthma exacerbations and lower QOL in children with severe/difficult-to-treat asthma.


Asunto(s)
Asma/epidemiología , Hospitalización/estadística & datos numéricos , Calidad de Vida , Niño , Progresión de la Enfermedad , Femenino , Humanos , Inmunoglobulina E/metabolismo , Masculino , Factores de Riesgo , Índice de Severidad de la Enfermedad , Encuestas y Cuestionarios , Estados Unidos/epidemiología
9.
Immunol Allergy Clin North Am ; 37(2): 413-430, 2017 05.
Artículo en Inglés | MEDLINE | ID: mdl-28366485

RESUMEN

Novel biologic agents have allowed clinicians to achieve improved patient outcomes. Appropriate pharmacoceconomic analyses demand evaluation of all relevant costs, including the treatments, the disease and comorbidities, and costs of alternative treatments, including their short- and long-term side effects. Only with complete data can the value of therapies be correctly estimated. By assessing costs, pharmacoeconomic studies complement studies of efficacy and safety, helping to determine the relationships of treatment and outcome. This article provides a broad framework for understanding and evaluating published economic analyses and identifying the key costs and benefits caring for patients with asthma and other immune diseases.


Asunto(s)
Terapia Biológica/economía , Terapia Biológica/métodos , Economía Farmacéutica , Asma/terapia , Productos Biológicos/economía , Productos Biológicos/uso terapéutico , Análisis Costo-Beneficio , Costos de la Atención en Salud , Humanos , Calidad de la Atención de Salud/economía , Estados Unidos
10.
J Manag Care Spec Pharm ; 23(11): 1117-1124, 2017 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-29083971

RESUMEN

BACKGROUND: The Healthcare Effectiveness Data and Information Set (HEDIS) quality measures for asthma include the asthma medication ratio (AMR) as a marker of quality of care for patients with asthma. Few data are available to describe the association between health care use and costs in patients with high versus low AMR. OBJECTIVE: To characterize health care use and costs associated with high versus low AMR in patients participating in commercial health plans. METHODS: In a commercial claims database, this study retrospectively identified patients aged 5 to 64 years on December 31, 2011, who met the HEDIS definition of asthma in the premeasurement year (January 1, 2010-December 31, 2010) and the measurement year (January 1, 2011-December 31, 2011). Each patient was classified as having either high or low AMR based on the HEDIS definition. AMR was calculated as the ratio of controller to total asthma medications; high AMR was defined as ≥ 0.5. Annual per-patient health care use and costs were compared in patients with high versus low AMR using (a) multivariable linear regression models to estimate mean annual number of office visits, oral corticosteroids (OCS) bursts (≤ 15-day supply), and costs and (b) negative binomial models to estimate mean annual hospitalization and emergency department (ED) visits. All estimates were adjusted for age, sex, region, and Charlson Comorbidity Index score to control for differences between patients with high versus low AMR. RESULTS: Patients were identified with high (30,575) and low (6,479) AMR. An average patient with high AMR had more all-cause office visits (14.1 vs. 11.0; P < 0.001), fewer all-cause hospitalizations (0.109 vs. 0.215; P < 0.001), fewer all-cause ED visits (0.321 vs. 0.768; P < 0.001), and fewer OCS bursts (0.83 vs. 1.33; P < 0.001) than an average patient with low AMR. An average patient with high AMR had fewer asthma-related hospitalizations (0.024 vs. 0.088; P < 0.001) and ED visits (0.060 vs. 0.304; P < 0.001) than an average patient with low AMR. Numbers of asthma-related annual office visits were similar between the high and low AMR groups (high 2.2 vs. low 2.2; not significant). The rate of poor asthma control events (≥ 6 short-acting beta-agonist dispensing events or ≥ 2 OCS bursts, asthma-related ED visits, or hospitalizations) was greater in patients with low AMR than in patients with high AMR (74.3% vs. 26.9%). An average patient with high AMR had lower annual nonmedication costs than an average patient with low AMR ($5,733 vs. $6,295; P = 0.011). Similar trends emerged for asthma-related costs. A patient with high AMR had higher average total annual health care costs than a patient with low AMR ($9,811 vs. $8,398; P < 0.001). These increased costs primarily resulted from increased medication costs for patients with high versus low AMR ($4,077 vs. $2,103; P < 0.001). CONCLUSIONS: Although patients with high AMR had more office visits and higher medication (which resulted in higher overall health care) costs, their care was marked by fewer OCS bursts (indicating fewer instances of poor asthma control), fewer ED visits, and fewer hospitalizations and lower non-medication costs than those patients with low AMR. These findings support the use of AMR as a care quality measure for patients with persistent asthma. DISCLOSURES: This study was funded by Genentech. Luskin has received consulting and lecture fees, research and travel support, and payment for developing educational presentations from Genentech and has received lecture fees from Merck. Raimundo and Solari are employees of Genentech. Antonova was employed by Genentech at the time of this study. Broder and Chang are employees of Partnership for Health Analytic Research, which received funding from Genentech to conduct this research. Study concept and design were contributed by all authors. Broder and Chang conducted analyses. All authors interpreted the data. Antonova wrote the manuscript with assistance from the other authors. All authors participated in manuscript review and revisions.


Asunto(s)
Antiasmáticos/economía , Asma/tratamiento farmacológico , Asma/economía , Costos de la Atención en Salud , Recursos en Salud/economía , Aceptación de la Atención de Salud , Adolescente , Adulto , Antiasmáticos/administración & dosificación , Asma/epidemiología , Niño , Preescolar , Bases de Datos Factuales/economía , Femenino , Recursos en Salud/estadística & datos numéricos , Humanos , Revisión de Utilización de Seguros/economía , Masculino , Persona de Mediana Edad , Estudios Retrospectivos , Resultado del Tratamiento , Adulto Joven
11.
Clinicoecon Outcomes Res ; 8: 641-648, 2016.
Artículo en Inglés | MEDLINE | ID: mdl-27822075

RESUMEN

BACKGROUND: The objective of this study was to estimate the prevalence of possible oral corticosteroid (OCS)-related side effects and health care resource use and costs in patients with asthma. METHODS: This was a cross-sectional, matched-cohort, retrospective study using a commercial claims database. Adults with asthma diagnosis codes and evidence of asthma medication use were studied. Patients with high OCS use (≥30 days of OCS annually) were divided into those who did versus those who did not experience OCS-related possible side effects. Their health care resource use and costs were compared using linear regression or negative binomial regression models, adjusting for age, sex, geographic region, Charlson Comorbidity Index score, and chronic obstructive pulmonary disease status. RESULTS: After adjustment, high OCS users with possible side effects were more likely to have office visits (23.0 vs 19.6; P<0.001) and hospitalizations (0.44 vs 0.22; P<0.001) than those without possible side effects. Emergency department visits were similar between the groups. High OCS users with possible side effects had higher adjusted total annual mean health care costs ($25,168) than those without such side effects ($21,882; P=0.009). CONCLUSION: Among high OCS users, patients with possible OCS-related side effects are more likely to use health care services than those without such side effects. Although OCS may help control asthma and manage exacerbations, OCS side effects may result in additional health care resource use and costs, highlighting the need for OCS-sparing asthma therapies.

12.
Am J Ther ; 3(7): 515-520, 1996 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-11862283

RESUMEN

Anaphylaxis is an acute fatal or potentially fatal hypersensitivity reaction. Anaphylaxis represent a clinical diagnosis based on history and physical examination and includes symptoms of airway obstruction, generalized skin reactions, particularly flushing, itching, urticaria, angioedema cardiovascular symptoms including hypotension and gastrointestinal symptoms. These symptoms result from the action of mast cell mediators, especially histamine and lipid mediators such as leukotrienes and platelet activating factor on shock tissue. The shock tissue includes blood vessels, mucous glands, smooth muscle, and nerve endings. Anaphylaxis follows the typical immediate hypersensitivity time course, with a reaction beginning within minutes of antigen exposure. A late-phase reaction hours after the initial reaction may occur. Mast cell mediator release can be triggered by both IgE and non--IgE-mediated factors. Therefore, anaphylaxis may be termed anaphylaxis (IgE mediated) or anaphylactoid (non--IgE mediated). The most common IgE-mediated triggers are drugs, typically penicillin or other beta-lactam antibiotics, foods, most commonly nuts, peanuts, fish and shellfish, or hymenoptera stings. Non-IgE-mediated causes include factors causing marked complement activation such as plasma proteins or compounds which act directly on the mast cell membrane, such as vancomycin, quinolone antibiotics, or radiographic contrast media. The pathophysiology of some trigger factors, such as aspirin, remains unclear. Therapy of anaphylaxis revolves around patient education, avoidance, desensitization or pharmacologic pretreatment when agents causing anaphylaxis need to be readministered, and early recognition and prompt therapy of reactions should they occur.

13.
Manag Care Interface ; 17(1): 31-6, 2004 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-15035598

RESUMEN

Patients with difficult-to-treat or suboptimally controlled asthma consume a disproportionate share of asthma health care resources. Treatment strategies that minimize exacerbations may decrease the need for unscheduled medical services, reduce emergency department visits, and minimize asthma-related hospitalizations. Clinical trial evidence indicates the immunoglobulin-E blocker omalizumab reduces the frequency of asthma exacerbations, minimizes symptoms, and improves lung function in patients with moderate-to-severe asthma that is inadequately controlled by inhaled corticosteroid therapy. Treatment with omalizumab of patients with suboptimally controlled asthma may reduce the clinical and economic burden of asthma.


Asunto(s)
Corticoesteroides/uso terapéutico , Antiasmáticos/uso terapéutico , Anticuerpos Monoclonales/uso terapéutico , Asma/tratamiento farmacológico , Adolescente , Corticoesteroides/administración & dosificación , Corticoesteroides/economía , Antiasmáticos/administración & dosificación , Antiasmáticos/economía , Anticuerpos Antiidiotipos , Anticuerpos Monoclonales/administración & dosificación , Anticuerpos Monoclonales/economía , Anticuerpos Monoclonales Humanizados , Asma/economía , Asma/epidemiología , Niño , Costo de Enfermedad , Femenino , Servicios de Salud/estadística & datos numéricos , Necesidades y Demandas de Servicios de Salud , Humanos , Masculino , Omalizumab , Prevalencia , Índice de Severidad de la Enfermedad , Resultado del Tratamiento , Estados Unidos/epidemiología
14.
J Allergy Clin Immunol Pract ; 2(5): 544-52.e1-2, 2014.
Artículo en Inglés | MEDLINE | ID: mdl-25213047

RESUMEN

BACKGROUND: Few data are available that evaluate the relationship among asthma exacerbations, asthma triggers, and asthma-related quality of life (QoL). OBJECTIVE: To evaluate the impact of asthma exacerbations and asthma triggers on QoL. METHODS: Patients with severe or difficult-to-treat asthma, ages ≥ 13 years (n = 2679) from the TENOR (The Epidemiology and Natural History of Asthma: Outcomes and Treatment Regimens) 3-year observational study were included. Exacerbations were defined hierarchically in descending order of severity (hospitalization, emergency department [ED] visit, steroid burst, no exacerbation) by using data from months 6 and 12. The total number (frequency) of exacerbations was assessed. Asthma-related QoL was measured at month 12 by using the Mini-Asthma QoL Questionnaire (Mini-AQLQ); self-reported asthma triggers were collected at baseline and annually. We used 1-way ANOVA to test for differences in Mini-AQLQ domain scores across asthma exacerbation severity, the total number of asthma exacerbations, and the number of asthma triggers. RESULTS: A significant decrease (P < .001) in Mini-AQLQ domain scores was seen with increasing severity of asthma exacerbation (no exacerbation, steroid burst, ED visit, and hospitalization); symptom (5.5, 4.8, 4.3, and 4.2), activity (5.8, 5.2, 4.6, and 4.4), emotional (5.6, 5.0, 4.4, and 4.2), exposure (5.0, 4.5, 4.0, and 3.9); and overall (5.5, 4.9, 4.3, and 4.1). Increasing exacerbation frequency and the number of baseline asthma triggers also were associated with significant decreases in Mini-AQLQ domain scores. An increasing number of asthma triggers were associated with an increase in severity and frequency of exacerbations. CONCLUSION: Avoidance of asthma triggers may reduce exacerbation rates and improve asthma-related QoL in patients with severe or difficult-to-treat asthma. Interventional studies are warranted to further explore these outcomes.


Asunto(s)
Asma/epidemiología , Asma/etiología , Adulto , Asma/psicología , Estudios de Cohortes , Servicio de Urgencia en Hospital/estadística & datos numéricos , Femenino , Hospitalización/estadística & datos numéricos , Humanos , Masculino , Persona de Mediana Edad , Calidad de Vida , Autoinforme , Índice de Severidad de la Enfermedad , Encuestas y Cuestionarios , Adulto Joven
17.
Allergy Asthma Proc ; 27(2): 119-22, 2006.
Artículo en Inglés | MEDLINE | ID: mdl-16724629

RESUMEN

Costs for managed care organizations to process prior authorizations (PAs) for nonformulary medications have been estimated to be dollars 20-25 per request. Costs for physicians to process these requests have not been studied extensively. A data collection tool was developed and used by physicians and nurses to document time spent on processing PAs. Data were collected over 8 weeks and 117 requests were processed. Nurses averaged 5.6 +/- 6.5 calls per day per nurse and spent an average of 17 minutes per call. Physicians averaged 1.9 +/- 1.2 calls per day averaging 5.8 +/- 5.0 minutes per call. During the study period nurses spent >40 hours on 231 calls and physicians spent >8 hours on 154 calls. Based on the hourly rate of the nurses and physicians, the total cost in this specialty practice was dollars 17.77 per PA. Of the 117 PA requests, 98.7% were approved the first time they were processed. There are substantial costs with processing PAs for nonformulary drugs on the physician office side of managed care as well as on the insurance side of the process. Specialty physicians should have a different process for obtaining notformulary medications because almost 100% of their requests are granted.


Asunto(s)
Alergia e Inmunología , Costos de los Medicamentos , Prescripciones de Medicamentos/economía , Cobertura del Seguro/economía , Seguro de Servicios Farmacéuticos/economía , Programas Controlados de Atención en Salud/economía , Costos y Análisis de Costo , Formularios Farmacéuticos como Asunto , Humanos , Factores de Tiempo , Carga de Trabajo/economía
18.
J Allergy Clin Immunol ; 115(4 Suppl): S539-45, 2005 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-15806037

RESUMEN

Asthma is a disorder characterized by common features of reversible airflow obstruction and bronchial hyperreactivity in the setting of airway mucosal and submucosal inflammation. However, the clinical manifestations are syndromic and not unimodal. There is marked variability in severity of symptoms, natural history, risks of adverse outcomes, pathologic characteristics, and response to therapy. Understanding the relationship between these factors has been complicated by the variability of outcomes and the lack of correlation between them. There is a striking absence of correlation among the pathologic, physiologic, and clinical manifestations of the asthmatic disorders. Lung function tends to correlate poorly with clinical outcomes, and there is only modest correlation between clinical outcomes. Response to therapy is variable both externally (between patients) and internally, depending on which outcome is evaluated. A more complete understanding of the variability of disease and the genetic and environmental causes of the variability likely will change how we approach asthma and its therapy.


Asunto(s)
Asma/diagnóstico , Calidad de Vida , Asma/terapia , Humanos , Evaluación de Resultado en la Atención de Salud , Índice de Severidad de la Enfermedad
19.
J Asthma ; 42(10): 823-7, 2005 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-16393718

RESUMEN

This investigation evaluated variability in asthma-related quality-of-life (ARQL) outcomes among patients randomized to omalizumab or placebo. Pooled data on the Asthma Quality of Life Questionnaire (AQLQ) from two trials were used (n = 948). Variability in ARQL outcomes was determined by categorizing AQLQ score changes according to minimal clinically important difference (MCID: 0.5 points) and large clinically important difference (LCID: 1.5 points) score changes. A greater proportion of patients achieved improvement in every domain of AQLQ scores during all periods with omalizumab compared with placebo. Omalizumab-treated patients showed greater clinically important improvement in ARQL compared with patients receiving placebo.


Asunto(s)
Antiasmáticos/uso terapéutico , Anticuerpos Monoclonales/uso terapéutico , Asma/tratamiento farmacológico , Calidad de Vida , Adolescente , Adulto , Anciano , Anticuerpos Antiidiotipos , Anticuerpos Monoclonales Humanizados , Niño , Femenino , Estado de Salud , Humanos , Masculino , Persona de Mediana Edad , Omalizumab , Ensayos Clínicos Controlados Aleatorios como Asunto , Resultado del Tratamiento
20.
Ann Allergy Asthma Immunol ; 90(5): 543-9, 2003 May.
Artículo en Inglés | MEDLINE | ID: mdl-12775136

RESUMEN

BACKGROUND: Unmeasured confounders and selection bias can significantly influence the results of retrospective observational analyses of asthma therapy. OBJECTIVE: To evaluate the efficacy of oral montelukast and inhaled fluticasone propionate in a randomized, prospective 12-month "real-world" observational analysis of children with mild persistent asthma. METHODS: Children (n = 104) between 6 and 15 years of age with mild asthma as determined by forced expiratory volume in 1 second, symptoms, and evaluation by an experienced pediatric allergist or pulmonologist, who were not currently receiving controller therapy, were randomly assigned to fluticasone or montelukast on an alternating basis. Subjects were asked to complete a questionnaire at 6 and 12 months; otherwise, medical care was identical to that of similar managed care patients. Outcome parameters were evaluated after 12 months by claims database analysis. An acute asthma attack requiring emergent care was the primary outcome parameter. Measures of adherence, symptoms, and asthma control, as measured by the pediatric Asthma Therapy Assessment Questionnaire, were secondary outcome parameters. RESULTS: Demographics, spirometry, symptoms at enrollment, emergent care visits, asthma hospitalizations, routine office visits, and symptoms at study completion were not significantly different between study groups. Adherence, as evaluated by the number of controller fills, was significantly (P = 0.0003) better for montelukast (7.65 +/- 3.01) than fluticasone (5.46 +/- 3.01). Similar numbers of subjects in each study group required beta-agonists and oral prednisone. CONCLUSIONS: These results suggest that oral montelukast and inhaled fluticasone have similar real-world efficacies in the treatment of children with mild asthma, possibly as a result of the significantly better adherence with oral montelukast therapy compared with inhaled fluticasone.


Asunto(s)
Acetatos/administración & dosificación , Androstadienos/administración & dosificación , Asma/tratamiento farmacológico , Broncodilatadores/administración & dosificación , Antagonistas de Leucotrieno/administración & dosificación , Quinolinas/administración & dosificación , Administración Intranasal , Administración Oral , Adolescente , Agonistas Adrenérgicos beta/administración & dosificación , Antibacterianos/administración & dosificación , Asma/fisiopatología , Niño , Ciclopropanos , Servicios Médicos de Urgencia , Femenino , Fluticasona , Humanos , Masculino , Cooperación del Paciente , Ápice del Flujo Espiratorio/efectos de los fármacos , Proyectos Piloto , Prednisolona/administración & dosificación , Estudios Prospectivos , Sulfuros
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