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1.
Medicina (Kaunas) ; 60(4)2024 Apr 19.
Artículo en Inglés | MEDLINE | ID: mdl-38674305

RESUMEN

Background: Ocrelizumab is an effective medication for multiple sclerosis. However, infusion-related reactions (IRRs) are a concern for patients and may lead to discontinuation of ocrelizumab. To minimize IRRs, pre-medications are administered. However, from our experience, these medications, especially diphenhydramine, can cause marked drowsiness. The primary objective of this study was to evaluate whether cetirizine is non-inferior to diphenhydramine in limiting the proportion and severity of reactions from ocrelizumab infusions. Methods: Twenty participants were serially randomized in a 1:1 ratio to receive 10 mg of cetirizine or 25 mg of diphenhydramine orally prior to their first three ocrelizumab infusions. Results: The rate of IRRs in this study was similar across both treatment groups with no increase in the risk of severity, and no grade 3 IRRs. Further, patients receiving cetirizine experienced a reduction in fatigue. While there was not a significant difference in global satisfaction, this score increased over time in the cetirizine arm while it remained unchanged in the diphenhydramine arm. Conclusions: Overall, our results suggest that cetirizine does not increase the risk of infusion-related reactions compared to diphenhydramine.


Asunto(s)
Anticuerpos Monoclonales Humanizados , Cetirizina , Difenhidramina , Humanos , Difenhidramina/administración & dosificación , Difenhidramina/uso terapéutico , Cetirizina/efectos adversos , Cetirizina/administración & dosificación , Cetirizina/uso terapéutico , Femenino , Masculino , Adulto , Persona de Mediana Edad , Anticuerpos Monoclonales Humanizados/efectos adversos , Anticuerpos Monoclonales Humanizados/uso terapéutico , Anticuerpos Monoclonales Humanizados/administración & dosificación , Infusiones Intravenosas/efectos adversos , Esclerosis Múltiple/tratamiento farmacológico
2.
Mult Scler ; 29(8): 956-966, 2023 07.
Artículo en Inglés | MEDLINE | ID: mdl-37317841

RESUMEN

INTRODUCTION: Natalizumab is associated with a risk of progressive multifocal leukoencephalopathy (PML) in multiple sclerosis (MS) patients infected with John Cunningham virus (JCV). Ocrelizumab has demonstrated efficacy to treat MS; however, its safety in patients previously treated with natalizumab is unclear. OBJECTIVE: To evaluate the safety and efficacy of ocrelizumab in patients with relapsing MS (RMS) previously treated with natalizumab. METHODS: Clinically and radiographically stable RMS patients, ages 18-65 treated with natalizumab for ⩾ 12 months, were enrolled in the study and initiated ocrelizumab 4-6 weeks after their final dose of natalizumab. Relapse assessment, expanded disability status scale, and brain magnetic resonance imaging (MRI) were performed prior to starting ocrelizumab and at months 3, 6, 9, and 12. RESULTS: Forty-three patients were enrolled, and 41 (95%) completed the study. Two patients had a relapse while on ocrelizumab, one at month 9 and the other at month 12, without changes on brain MRI. Two additional patients had new brain MRI lesions detected at month 3, with no new symptoms. Thirteen serious adverse events (SAEs) were recorded, four of which were considered possibly related to ocrelizumab. CONCLUSION: Overall, our study indicates clinical and MRI stability for most patients transitioning from natalizumab to ocrelizumab. CLINICALTRIALS.GOV IDENTIFIER: NCT03157830.


Asunto(s)
Leucoencefalopatía Multifocal Progresiva , Esclerosis Múltiple Recurrente-Remitente , Esclerosis Múltiple , Humanos , Anticuerpos Monoclonales Humanizados/efectos adversos , Factores Inmunológicos/efectos adversos , Leucoencefalopatía Multifocal Progresiva/inducido químicamente , Esclerosis Múltiple/tratamiento farmacológico , Esclerosis Múltiple/inducido químicamente , Esclerosis Múltiple Recurrente-Remitente/diagnóstico por imagen , Esclerosis Múltiple Recurrente-Remitente/tratamiento farmacológico , Natalizumab/efectos adversos , Adolescente , Adulto Joven , Adulto , Persona de Mediana Edad , Anciano
4.
Mult Scler J Exp Transl Clin ; 7(4): 20552173211066588, 2021 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-34950502

RESUMEN

BACKGROUND: Natalizumab (NTZ) is a highly effective disease modifying treatment for relapsing multiple sclerosis (RMS), but it increases risk of progressive multifocal leukoencephalopathy (PML) in patients with serum anti- John Cunningham virus (JCV) antibodies. OBJECTIVE: To assess the safety and efficacy of rapid transition, from NTZ to teriflunomide (TFM) in RMS patients. METHODS: Clinically stable NTZ-treated, anti-JCV antibody positive RMS patients were switched to TFM 28 ± 7 days after their last dose of NTZ. The primary endpoint was proportion of relapse free patients at 24 months. RESULTS: Median [IQR] age of the 55 enrolled patients was 47 [40.7, 56.3] years, 76% were female. The median [IQR] number of prior NTZ treatments was 34 [18, 64]. annualized relapse rate (ARR) was 0.07 and 77% of the patients were relapse free at 24 months. Mean time to first GAD + lesion was 19.6 months, and to new/enlarging T2 lesion was 19.2 months. Mean time to 3 month sustained disability worsening (SDW) was 22 months and proportion free of 3-month SDW was 0.87. There were no cases of PML. CONCLUSIONS: The washout-free transition of NTZ to TFM was an efficacious and safe strategy for patients at risk of developing PML.ClinicalTrials.gov Identifier: NCT01970410.

5.
CNS Drugs ; 35(7): 743-767, 2021 07.
Artículo en Inglés | MEDLINE | ID: mdl-34228301

RESUMEN

Recombinant interferon (IFN) ß-1b was approved by the US Food and Drug Administration as the first disease-modifying therapy (DMT) for multiple sclerosis (MS) in 1993. Since that time, clinical trials and real-world observational studies have demonstrated the effectiveness of IFN therapies. The pivotal intramuscular IFN ß-1a phase III trial published in 1996 was the first to demonstrate that a DMT could reduce accumulation of sustained disability in MS. Patient adherence to treatment is higher with intramuscular IFN ß-1a, given once weekly, than with subcutaneous formulations requiring multiple injections per week. Moreover, subcutaneous IFN ß-1a is associated with an increased incidence of injection-site reactions and neutralizing antibodies compared with intramuscular administration. In recent years, revisions to MS diagnostic criteria have improved clinicians' ability to identify patients with MS and have promoted the use of magnetic resonance imaging (MRI) for diagnosis and disease monitoring. MRI studies show that treatment with IFN ß-1a, relative to placebo, reduces T2 and gadolinium-enhancing lesions and gray matter atrophy. Since the approval of intramuscular IFN ß-1a, a number of high-efficacy therapies have been approved for MS, though the benefit of these high-efficacy therapies should be balanced against the increased risk of serious adverse events associated with their long-term use. For some subpopulations of patients, including pregnant women, the safety profile of IFN ß formulations may provide a particular benefit. In addition, the antiviral properties of IFNs may indicate potential therapeutic opportunities for IFN ß in reducing the risk of viral infections such as COVID-19.


Asunto(s)
Adyuvantes Inmunológicos/uso terapéutico , Interferón beta-1a/uso terapéutico , Esclerosis Múltiple/tratamiento farmacológico , Antivirales/uso terapéutico , Humanos , Inyecciones Intramusculares , Esclerosis Múltiple/diagnóstico por imagen , Esclerosis Múltiple/fisiopatología , SARS-CoV-2 , Resultado del Tratamiento , Tratamiento Farmacológico de COVID-19
6.
BMJ Neurol Open ; 3(2): e000108, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-34308352

RESUMEN

BACKGROUND: To monitor long-term outcomes of ocrelizumab treatment. OBJECTIVE: To evaluate safety and treatment outcomes of ocrelizumab in a community-based multiple sclerosis (MS) population. METHODS: Adult patients with MS prescribed ocrelizumab were eligible. Chart reviews were conducted at the start of ocrelizumab treatment and every 6 months thereafter. RESULTS: Of the 355 patients enrolled, 71.9% were female; mean (SD) age was 51.8 (12.5) years; 78.3% had relapsing MS (RMS). Median baseline Expanded Disability Status Scale (EDSS) (IQR) was 3.0 (2.0-4.0) for RMS, 6.5 (6.0-7.5) for secondary progressive MS, and 6.5 (6.0-7.0) for primary progressive MS. Respiratory infections occurred in 40.1% and urinary tract infections in 33.1% of patients. There was no difference in the percentage of infections among patients <55 (68.5%, n=122), and those ≥55 of age (67.5%, n=104) (p=0.94). Twenty-five hospitalisations were due to infections; 69.2% of these patients were ≥55 with a mean EDSS of 5.7 (±1.86). Four patients have died. Serum IgM and IgG levels did not predict infection risk. Annualised relapse rate was 0.34 for the patients with RMS in the preceding 2 years and 0.09 in patients who received ≥2 ocrelizumab 600 mg courses. The first on-treatment MRI was stable in 262 (90.0%) patients, 6.9% had new T2 lesions, 2.7% had enlarging T2 lesions and 1.4% had gadolinium-enhancing lesions. Median EDSS at 12 months was unchanged. CONCLUSION: Ocrelizumab effectively controlled relapse risk and disability worsening. Although only 12.1% of patients have discontinued ocrelizumab, infections resulting in hospitalisation are a concern, especially in older and disabled patients.

7.
Biomedicines ; 8(7)2020 Jul 18.
Artículo en Inglés | MEDLINE | ID: mdl-32708516

RESUMEN

Sphingosine-1-phosphate (S1P), via its G-protein-coupled receptors, is a signaling molecule with important regulatory properties on numerous, widely varied cell types. Five S1P receptors (S1PR1-5) have been identified, each with effects determined by their unique G-protein-driven downstream pathways. The discovery that lymphocyte egress from peripheral lymphoid organs is promoted by S1P via S1PR-1 stimulation led to the development of pharmacological agents which are S1PR antagonists. These agents promote lymphocyte sequestration and reduce lymphocyte-driven inflammatory damage of the central nervous system (CNS) in animal models, encouraging their examination of efficacy in the treatment of multiple sclerosis (MS). Preclinical research has also demonstrated direct protective effects of S1PR antagonists within the CNS, by modulation of S1PRs, particularly S1PR-1 and S1PR-5, and possibly S1PR-2, independent of effects upon lymphocytes. Three of these agents, fingolimod, siponimod and ozanimod have been approved, and ponesimod has been submitted for regulatory approval. In patients with MS, these agents reduce relapse risk, sustained disability progression, magnetic resonance imaging markers of disease activity, and whole brain and/or cortical and deep gray matter atrophy. Future opportunities in the development of more selective and intracellular S1PR-driven downstream pathway modulators may expand the breadth of agents to treat MS.

8.
Artículo en Inglés | MEDLINE | ID: mdl-32457226
10.
Mult Scler J Exp Transl Clin ; 5(1): 2055217318824618, 2019.
Artículo en Inglés | MEDLINE | ID: mdl-30729028

RESUMEN

BACKGROUND: Natalizumab is an effective treatment for relapsing multiple sclerosis. Return of disease activity upon natalizumab discontinuance creates the need for follow-up therapeutic strategies. OBJECTIVE: To assess the efficacy of teriflunomide following natalizumab discontinuance in relapsing multiple sclerosis patients. METHODS: Clinically stable relapsing multiple sclerosis patients completing 12 or more consecutive months of natalizumab, testing positive for anti-John Cunningham virus antibody, started teriflunomide 14 mg/day, 28 ± 7 days after their final natalizumab infusion. Physical examination, Expanded Disability Status Scale, laboratory assessments, and brain magnetic resonance imaging were performed at screening and multiple follow-up visits. RESULTS: Fifty-five patients were enrolled in the study. The proportion of patients relapse-free was 0.94, restricted mean time to first gadolinium-enhancing lesion was 10.9 months and time to 3-month sustained disability worsening was 11.8 months. The mean number of new or enlarging T2 lesions per patient at 12 months was 0.42. Exploratory analyses revealed an annualized relapse rate of 0.08, and a proportion of patients with no evidence of disease activity of 0.68. Forty-seven patients (85.5%) reported adverse events, 95% of which were mild to moderate. CONCLUSIONS: Teriflunomide therapy initiated without natalizumab washout resulted in a low rate of return of disease activity. Clinicians may consider this a worthwhile strategy when transitioning clinically stable patients off natalizumab to another therapy.ClinicalTrials.gov Identifier: NCT01970410.

11.
Adv Ther ; 35(11): 1894-1904, 2018 11.
Artículo en Inglés | MEDLINE | ID: mdl-30341505

RESUMEN

INTRODUCTION: This study was designed to assess real-world outcomes of patients with multiple sclerosis (MS) who were stable on interferon (IFN) beta therapy in the year prior to switching to another IFN beta therapy versus those who continued on the initial treatment. METHODS: This study used administrative claims from MarketScan Commercial Claims and Encounters Database, from January 1, 2010, to March 31, 2015, to identify MS patients aged 18-64 years who remained relapse free for at least 1 year while continuously treated with an IFN beta therapy. Stable patients remaining on their initial IFN beta therapy (no-switch patients) were matched with stable patients who switched IFN beta therapy (switch patients) using propensity score matching (first claim = index date). Outcome measures included annualized relapse rate (ARR), the percentage of patients who relapsed, medication possession ratio, and the proportion of days covered and were measured during the year following the index date. RESULTS: This study identified 531 patients in the no-switch group and 177 patients in the switch group, with subsets of 270 patients in the no-switch group and 90 patients in the switch group stable on intramuscular (IM) IFN beta-1a therapy. All outcomes during the follow-up year were significantly better in the no-switch group than in the switch group. For all patients, ARR in the switch group was more than twice that in the no-switch group (P = 0.002). For patients stable on IM IFN beta-1a at baseline, ARR was twice as high in the switch group as in the no-switch group (P = 0.012). CONCLUSION: Among all patients stable on IFN beta therapy and the subset stable on IM IFN beta therapy in particular, those who remained on therapy had significantly better outcomes than those who switched to another IFN beta therapy. FUNDING: Biogen (Cambridge, MA, USA).


Asunto(s)
Sustitución de Medicamentos , Interferón beta-1a , Esclerosis Múltiple Recurrente-Remitente , Prevención Secundaria , Adyuvantes Inmunológicos/administración & dosificación , Adyuvantes Inmunológicos/efectos adversos , Adulto , Bases de Datos Factuales/estadística & datos numéricos , Sustitución de Medicamentos/métodos , Sustitución de Medicamentos/estadística & datos numéricos , Femenino , Humanos , Inyecciones Intramusculares , Revisión de Utilización de Seguros/estadística & datos numéricos , Interferón beta-1a/administración & dosificación , Interferón beta-1a/efectos adversos , Masculino , Persona de Mediana Edad , Esclerosis Múltiple Recurrente-Remitente/diagnóstico , Esclerosis Múltiple Recurrente-Remitente/tratamiento farmacológico , Esclerosis Múltiple Recurrente-Remitente/epidemiología , Esclerosis Múltiple Recurrente-Remitente/fisiopatología , Gravedad del Paciente , Prevención Secundaria/métodos , Prevención Secundaria/estadística & datos numéricos , Resultado del Tratamiento , Estados Unidos/epidemiología
12.
Mult Scler Relat Disord ; 22: 27-34, 2018 May.
Artículo en Inglés | MEDLINE | ID: mdl-29524759

RESUMEN

BACKGROUND: Delayed-release dimethyl fumarate (DMF) may be a therapeutic option for patients with relapsing-remitting multiple sclerosis (RRMS) who are treated with natalizumab and require a change in therapy. However, there is limited information regarding predictors of favorable treatment outcomes in patients switching from natalizumab to DMF. Clinical practices and sequencing protocols vary. Herein, we present the clinical results, including annualized relapse rate (ARR) and risk of relapse, of a phase 4 retrospective observational study of patients with RRMS who switched from natalizumab to DMF in a community practice setting (STRATEGY). METHODS: STRATEGY was performed through a single time point medical record abstraction; no study visits or procedures were required. Key inclusion criteria included age ≥ 18 years, RRMS diagnosis (McDonald criteria, 2010 revised), ≥ 12 months of continuous treatment with natalizumab monotherapy before DMF initiation, and initiation of DMF ≥ 12 months before enrollment. Patients were eligible to enroll regardless of current DMF use. RESULTS: A total of 530 patients at 45 US sites enrolled, and 506 met the inclusion criteria and were included in the modified evaluable population for analysis. Mean (SD) age at DMF initiation was 47.0 (10.9) years, with a mean (SD) of 12.7 (7.2) years since MS diagnosis. The mean (SD) duration of natalizumab treatment was 3.4 (1.9) years, and the mean (SD) washout from natalizumab discontinuation to DMF initiation (n = 502) was 101.6 (164.0) days. Overall risk of relapse 12 months after DMF initiation was 19.6%. Overall unadjusted ARR was higher during the 12 months following initiation of DMF treatment compared with the 12 months following initiation of natalizumab treatment (rate ratio, 2.32 [95% CI, 1.69-3.18]; p < 0.0001), but was lower compared with that observed in the year before initiation of natalizumab (rate ratio, 0.51 [95% CI, 0.40-0.64]; p < 0.0001). At 1 year following initiation of DMF treatment, the relapse rate was lower for patients who did not experience a relapse during 1 year following initiation of natalizumab treatment than for those who did (rate ratio for relapse rate, 0.47 [95% CI, 0.16-1.38]; p = 0.1664). The relapse rate for patients who did not relapse during natalizumab treatment was significantly lower with a washout period of ≤ 90 days as compared with a washout period of > 90 days (rate ratio for relapse rate, 0.49 [95% CI, 0.26-0.90]; p = 0.0216). A total of 42 (8%) patients reported ≥ 1 adverse event leading to DMF discontinuation during the study; the most commonly reported events were gastrointestinal disorders (n = 21; 4%). CONCLUSIONS: Results from this multicenter retrospective observational study suggest that DMF may be an effective treatment option for patients who discontinue natalizumab in routine clinical practice. ARR was lower in patients who initiated DMF within 90 days of natalizumab discontinuation compared with patients who initiated DMF after 90 days of natalizumab discontinuation. TRIAL REGISTRATION NUMBER: ClinicalTrials.gov identifier NCT02159573.


Asunto(s)
Dimetilfumarato/uso terapéutico , Factores Inmunológicos/efectos adversos , Factores Inmunológicos/uso terapéutico , Esclerosis Múltiple Recurrente-Remitente/tratamiento farmacológico , Natalizumab/efectos adversos , Natalizumab/uso terapéutico , Adolescente , Adulto , Preparaciones de Acción Retardada , Dimetilfumarato/efectos adversos , Sustitución de Medicamentos , Femenino , Humanos , Masculino , Persona de Mediana Edad , Recurrencia , Estudios Retrospectivos , Resultado del Tratamiento , Adulto Joven
13.
Mult Scler ; 24(7): 942-950, 2018 06.
Artículo en Inglés | MEDLINE | ID: mdl-28537110

RESUMEN

BACKGROUND: Following approval of dimethyl fumarate (DMF), we established a registry of relapsing multiple sclerosis (RMS) patients taking DMF at our community MS center. OBJECTIVE: To track DMF patients' tolerability, disease progression, and lymphopenia. METHODS: Patients prescribed DMF for RMS from March 2013 to March 2016 were prospectively enrolled ( N = 412). Baseline data, clinical relapses, magnetic resonance imaging (MRI) activity, discontinuation, and lymphocyte counts were captured through chart review. RESULTS: The mean age of patients starting DMF was 49.4 ± 12.0 years and 70% transitioned from a previous disease-modifying therapy (DMT). Of the patients, 38% discontinued DMF, 76% of whom discontinued due to side effects. Clinical relapse and MRI activity were low. Comparing patients who transitioned from interferon-ß (IFN), glatiramer acetate (GA), or natalizumab (NTZ), patients previously on NTZ had higher rates of relapse than those previously on GA (annualized relapse rate p = 0.039, percent relapse p = 0.021). Grade III lymphopenia developed in 11% of patients. Lymphopenia was associated with older age ( p < 0.001) and longer disease duration ( p < 0.001). CONCLUSION: Given the high rates of lymphopenia and discontinuation, it has become our clinical practice to more closely scrutinize older patients and those with a longer disease duration who are potential candidates for initiating DMF therapy.


Asunto(s)
Dimetilfumarato/uso terapéutico , Inmunosupresores/uso terapéutico , Esclerosis Múltiple Recurrente-Remitente/tratamiento farmacológico , Adulto , Factores de Edad , Centros Comunitarios de Salud , Femenino , Humanos , Linfopenia/inducido químicamente , Masculino , Persona de Mediana Edad , Sistema de Registros , Resultado del Tratamiento , Estados Unidos
14.
J Athl Train ; 51(5): 406-9, 2016 May.
Artículo en Inglés | MEDLINE | ID: mdl-27186919

RESUMEN

OBJECTIVE: To outline a 4-phase progressive program that safely and successfully enabled athletes to return to sport without recurrence of exertional rhabdomyolysis symptoms. BACKGROUND: In January 2011, a large cluster of National Collegiate Athletic Association Division I football athletes were evaluated and treated for exertional rhabdomyolysis. After the athletes were treated, the athletic trainers and sports medicine providers were challenged to develop a safe return-to-play program because of the lack of specific reports in the medical literature to direct such activities. TREATMENT: A progressive 4-phase program based on existing recommendations, including guidelines for continued clinical and laboratory monitoring. CONCLUSIONS: Although the actual process of reintegrating players will differ based on each athlete's unique circumstances, this program provides a safe and effective foundation that can be modified based on the response to activity and sport.


Asunto(s)
Atletas , Traumatismos en Atletas/rehabilitación , Volver al Deporte , Rabdomiólisis , Adulto , Atletas/psicología , Atletas/estadística & datos numéricos , Traumatismos en Atletas/diagnóstico , Femenino , Fútbol Americano , Humanos , Masculino , Desarrollo de Programa , Volver al Deporte/fisiología , Volver al Deporte/psicología , Rabdomiólisis/diagnóstico , Rabdomiólisis/etiología , Rabdomiólisis/rehabilitación , Medicina Deportiva/métodos , Resultado del Tratamiento , Universidades
15.
J Am Coll Cardiol ; 66(10): 1091-101, 2015 Sep 08.
Artículo en Inglés | MEDLINE | ID: mdl-26337986

RESUMEN

BACKGROUND: Recent large clinical trials show lower rates of late cardiovascular events by extending clopidogrel >12 months after percutaneous coronary revascularization (PCI). However, concerns of increased bleeding have elicited support for limiting prolonged treatment to high-risk patients. OBJECTIVES: The aim of this analysis was to determine the effect of prolonging clopidogrel therapy >12 months versus ≤12 months after PCI on very late outcomes in patients with diabetes mellitus (DM). METHODS: Using the Veterans Health Administration, 28,849 patients undergoing PCI between 2002 and 2006 were categorized into 3 groups: 1) 16,332 without DM; 2) 9,905 with DM treated with oral medications or diet; and 3) 2,612 with DM treated with insulin. Clinical outcomes, stratified by stent type, ≤4 years after PCI were determined from the Veterans Health Administration and Medicare databases and risk was assessed by multivariable and propensity score analyses using a landmark analysis starting 1 year after the index PCI. The primary endpoint of the study was the risk of all-cause death or myocardial infarction (MI). RESULTS: In patients with DM treated with insulin who received drug-eluting stents (DES), prolonged clopidogrel treatment was associated with a decreased risk of death (hazard ratio [HR]: 0.59; 95% confidence interval [CI]: 0.42 to 0.82) and death or MI (HR: 0.67; 95% CI: 0.49 to 0.92). Similarly, in patients with noninsulin-treated DM receiving DES, prolonged clopidogrel treatment was associated with less death (HR: 0.61; 95% CI: 0.48 to 0.77) and death or MI (HR: 0.61; 95% CI: 0.5 to 0.75). Prolonged clopidogrel treatment was not associated with a lower risk in patients without DM or in any group receiving bare-metal stents. CONCLUSIONS: Extending the duration of clopidogrel treatment >12 months may decrease very late death or MI only in patients with DM receiving first-generation DES. Future studies should address this question in patients receiving second-generation DES.


Asunto(s)
Angioplastia Coronaria con Balón/métodos , Causas de Muerte , Enfermedad de la Arteria Coronaria/mortalidad , Enfermedad de la Arteria Coronaria/terapia , Diabetes Mellitus/mortalidad , Ticlopidina/análogos & derivados , Anciano , Análisis de Varianza , Angioplastia Coronaria con Balón/mortalidad , Clopidogrel , Estudios de Cohortes , Enfermedad de la Arteria Coronaria/complicaciones , Bases de Datos Factuales , Diabetes Mellitus/diagnóstico , Diabetes Mellitus/terapia , Esquema de Medicación , Stents Liberadores de Fármacos , Femenino , Estudios de Seguimiento , Humanos , Insulina/administración & dosificación , Cuidados a Largo Plazo , Masculino , Medicare/estadística & datos numéricos , Persona de Mediana Edad , Análisis Multivariante , Inhibidores de Agregación Plaquetaria/administración & dosificación , Cuidados Posoperatorios/métodos , Puntaje de Propensión , Modelos de Riesgos Proporcionales , Estudios Retrospectivos , Medición de Riesgo , Índice de Severidad de la Enfermedad , Tasa de Supervivencia , Ticlopidina/administración & dosificación , Factores de Tiempo , Resultado del Tratamiento , Estados Unidos , Ayuda a Lisiados de Guerra/estadística & datos numéricos
16.
Heart ; 101(19): 1569-76, 2015 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-26209334

RESUMEN

OBJECTIVES: Patients with chronic kidney disease (CKD) are at high risk of death or myocardial infarction (MI) after percutaneous coronary interventions (PCI). We assessed whether prolonged dual antiplatelet therapy beyond the recommended 12 months may prevent adverse outcomes in patients with CKD receiving drug-eluting stents (DES) or bare-metal stents (BMS). METHODS: We studied all Veterans receiving PCI with BMS or first-generation DES in the Veterans Affairs (VA) Healthcare System between 2002 and 2006, classified by CKD (estimated glomerular filtration rate <60 mL/min) or normal renal function. We used landmark analyses from 12 months after PCI with Cox proportional hazards multivariable and propensity-adjusted models to assess the effect of prolonged clopidogrel (more than 12  months) versus 12 months or less after PCI on clinical outcomes from 1 year to 4 years after PCI. RESULTS: Of 23 042 eligible subjects receiving PCI, 4880 (21%) had CKD. Compared with normal renal function, patients with CKD had higher risks of death or MI 1-4 years after DES (21% vs 12%, HR=1.75; 95% CI 1.51 to 2.04) or BMS (28% vs 15%, HR=2.10; 95% CI 1.90 to 2.32). In patients with CKD receiving DES, clopidogrel use of more than 12 months after PCI was associated with lower risks of death or MI (18% vs 24%, HR=0.74; 95% CI 0.58 to 0.95), and death (15% vs 23%, HR=0.61; 95% CI 0.47 to 0.80), but had no effect on repeat revascularisation 1-4 years after PCI. CONCLUSIONS: In patients with CKD, prolonging clopidogrel beyond 12 months after PCI may decrease the risk of death or MI only in patients receiving first-generation DES. These results support a patient-tailored approach to prolonging clopidogrel after PCI.


Asunto(s)
Enfermedad de la Arteria Coronaria/terapia , Intervención Coronaria Percutánea/instrumentación , Inhibidores de Agregación Plaquetaria/administración & dosificación , Insuficiencia Renal Crónica/complicaciones , Stents , Ticlopidina/análogos & derivados , Anciano , Anciano de 80 o más Años , Clopidogrel , Enfermedad de la Arteria Coronaria/complicaciones , Enfermedad de la Arteria Coronaria/diagnóstico , Enfermedad de la Arteria Coronaria/mortalidad , Esquema de Medicación , Stents Liberadores de Fármacos , Femenino , Tasa de Filtración Glomerular , Humanos , Riñón/fisiopatología , Masculino , Metales , Persona de Mediana Edad , Análisis Multivariante , Infarto del Miocardio/etiología , Intervención Coronaria Percutánea/efectos adversos , Intervención Coronaria Percutánea/mortalidad , Inhibidores de Agregación Plaquetaria/efectos adversos , Puntaje de Propensión , Modelos de Riesgos Proporcionales , Diseño de Prótesis , Insuficiencia Renal Crónica/diagnóstico , Insuficiencia Renal Crónica/mortalidad , Insuficiencia Renal Crónica/fisiopatología , Medición de Riesgo , Factores de Riesgo , Ticlopidina/administración & dosificación , Ticlopidina/efectos adversos , Factores de Tiempo , Resultado del Tratamiento , Estados Unidos , United States Department of Veterans Affairs
17.
Dig Dis Sci ; 58(2): 562-73, 2013 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-23010745

RESUMEN

BACKGROUND: Thrombocytopenia in chronic liver disease (CLD) typically reflects disease severity and may indicate an increased risk for bleeding. AIMS: To describe the longitudinal course of thrombocytopenia and risks for bleeding in veteran patients with non-hepatitis C-related CLD. METHODS: We identified 2,349 patients with non-hepatitis C-related CLD from databases of the New England Veterans Healthcare System between 1999 and 2008. The cohort was stratified by baseline platelet counts of <50,000, 50-100,000, > 100,000-150,000, and >150,000/µl. Primary outcomes were the incidence and hazard rates for bleeding episodes requiring hospitalization and incident severe thrombocytopenia (<50,000/µl). RESULTS: Over a median follow-up of 3.3 years (IQR 1.2, 6.3), incident major bleeds, predominantly gastrointestinal, occurred in 254 patients (10.8 % of the cohort) and in 19.9 % of those with baseline platelets <50,000/µl. Incident severe thrombocytopenia occurred in 315 patients (13.4 % of cohort) and in 40.7 % of those with baseline platelet counts between 50,000 and 100,000/µl. Baseline platelet counts between 50,000 and 100,000/µl independently predicted bleeding [adjusted HR 2.89 (1.76, 4.73) p < 0.001] as did esophageal varices, hemoglobin ≤ 9.9 g %, and INR 1.4-2.0. Incident severe thrombocytopenia and minimum platelet counts <25,000/µl each associated with bleeding episodes, but the average of minimum platelet counts recorded for those who bled was 76,000/µl. CONCLUSIONS: Among veteran patients with non-hepatitis C-related CLD, baseline platelet counts of 50,000 to 100,000/µl increased subsequent risks for both incident severe thrombocytopenia and major bleeding events. Whereas associations between severe thrombocytopenia and bleeding most likely reflect CLD severity, liver-related coagulopathies, and co-morbid bleeding risks, interventions to enhance platelet production may be beneficial for such patients.


Asunto(s)
Hemorragia Gastrointestinal/mortalidad , Hepatopatías/mortalidad , Trombocitopenia/mortalidad , Veteranos/estadística & datos numéricos , Anciano , Enfermedad Crónica , Bases de Datos Factuales/estadística & datos numéricos , Femenino , Estudios de Seguimiento , Hepatitis C , Humanos , Incidencia , Estudios Longitudinales , Masculino , Persona de Mediana Edad , Recuento de Plaquetas , Modelos de Riesgos Proporcionales , Estudios Retrospectivos , Factores de Riesgo , Índice de Severidad de la Enfermedad
18.
J Electrocardiol ; 45(6): 764-9, 2012.
Artículo en Inglés | MEDLINE | ID: mdl-22819483

RESUMEN

OBJECTIVES: The aim of this study was to investigate if T-wave inversion (TWI) in the settings of electrocardiogram (ECG)-left ventricular hypertrophy (LVH) is associated with advanced diastolic dysfunction (DD) in subjects with preserved ejection fraction (EF). BACKGROUND: Animal studies suggested that an abnormal transmural repolarization sequence from endocardium to epicardium may contribute to DD. However, little is known about abnormal repolarization sequence and DD in humans. METHODS: We studied 231 patients with ECG-diagnosed LVH and with an EF of 50% or greater (measured within 6 months of the index ECG). T-wave inversion was assessed on leads I, aVL, V(4), V(5), or V(6). Diastolic dysfunction was defined based on echocardiographic estimation of the left atrial pressure. We used multiple logistic regression to estimate the odds ratio of DD comparing patients with TWI with those without TWI. RESULTS: The average age was 65.0 ± 14.2 years, and 61% were women. The mean EF was 61.8% ± 6.6%. Patients with TWIs were more likely to have coronary artery disease (P = .013) and diabetes (P = .007). There was a 5.6-fold increased odds of DD in patients with TWI compared with those without TWI in a model adjusting for sex, age, relative wall thickness, body mass index, hypertension, coronary artery disease, diabetes, hyperlipidemia, and smoking. When comparing different echocardiographic estimates of the left atrial pressure, patients with TWI displayed higher values for septal and lateral E/e', left atrial volume index, and right ventricular/right atrial peak systolic gradient (P < .01 for each parameter). CONCLUSIONS: T-wave inversion is associated with increased odds of DD in patients with ECG-LVH with preserved systolic function. The reversal of the normal sequence of repolarization manifested on the 12-lead ECG as TWI may be a factor to DD.


Asunto(s)
Electrocardiografía/métodos , Frecuencia Cardíaca , Hipertrofia Ventricular Izquierda/diagnóstico , Hipertrofia Ventricular Izquierda/fisiopatología , Disfunción Ventricular Izquierda/diagnóstico , Disfunción Ventricular Izquierda/fisiopatología , Anciano , Femenino , Humanos , Masculino , Reproducibilidad de los Resultados , Sensibilidad y Especificidad
19.
J Neurosci Methods ; 165(2): 287-96, 2007 Sep 30.
Artículo en Inglés | MEDLINE | ID: mdl-17651810

RESUMEN

The human movement analysis panel (HMAP) measures separable components of arm motion and simple and complex finger coordination. HMAP testing takes 30min to administer. In separate experiments we have validated the HMAP against the standard grooved pegboard and measures of gait speed, and demonstrated important learning effects over both short durations of days, and longer intervals of months to years in normal subjects of different ages. Stepwise regression demonstrated the strongest correlation between the HMAP complex motor times and pegboard both-hand removal (R(2)=0.52, p=0.002 for dominant and R(2)=0.33, p=0.02 for non-dominant hands). The most consistent and sensitive measure of HMAP motor performance overall was the complex motor time. The HMAP is a short-duration, easily administered, objective quantitative test of motor function, with potential applications in aging, and in Parkinson's Disease and related motor disorders. The HMAP has a smaller version used in primates, so that measurements made in primate models of disease and its treatment are directly comparable to analogous clinical measurements made in the corresponding human disease.


Asunto(s)
Brazo/fisiología , Mano/fisiología , Movimiento/fisiología , Neurofisiología/métodos , Pruebas Neuropsicológicas/normas , Desempeño Psicomotor/fisiología , Adulto , Anciano , Anciano de 80 o más Años , Fenómenos Biomecánicos , Femenino , Lateralidad Funcional/fisiología , Humanos , Masculino , Persona de Mediana Edad , Trastornos del Movimiento/diagnóstico , Trastornos del Movimiento/fisiopatología , Músculo Esquelético/fisiología , Valor Predictivo de las Pruebas , Tiempo de Reacción/fisiología , Valores de Referencia , Factores de Tiempo
20.
J Rehabil Res Dev ; 43(1): 73-82, 2006.
Artículo en Inglés | MEDLINE | ID: mdl-16847773

RESUMEN

The Perceived Deficits Questionnaire (PDQ) is a part of the Multiple Sclerosis (MS) Quality of Life Inventory that assesses self-perceived cognitive difficulties. We used baseline data from 49 MS subjects participating in a clinical trial to evaluate the correlation of the PDQ with two measures of cognitive impairment, the Paced Auditory Serial Addition Test (PASAT) and the California Verbal Learning Test, 2nd edition (CVLT-II), total score, and one measure of depression, the Beck Depression Inventory-Amended (BDI-IA). The PDQ correlated significantly (r = 0.42; 95% confidence interval [CI], 0.15 to 0.62; p = 0.003) with the BDI-IA scores but not with either the PASAT (r = -0.22; 95% CI, -0.48 to 0.06; p = 0.2) or the CVLT-II total (r = -0.17; 95% CI, -0.43 to 0.12; p = 0.25). A subset of 38 of these subjects who scored worse than 0.5 standard deviation below the mean on the PASAT or CVLT-II received a more extensive neuropsychological battery of tests. No significant correlations were found between any of these tests and the PDQ. These results suggest that self-perceived cognitive dysfunction relates more to depression than to objective cognitive dysfunction.


Asunto(s)
Trastorno Depresivo/diagnóstico , Trastorno Depresivo/epidemiología , Esclerosis Múltiple/epidemiología , Pruebas Neuropsicológicas , Calidad de Vida , Encuestas y Cuestionarios , Adolescente , Adulto , Comorbilidad , Intervalos de Confianza , Femenino , Humanos , Masculino , Persona de Mediana Edad , Esclerosis Múltiple/diagnóstico , Esclerosis Múltiple/psicología , Probabilidad , Pronóstico , Medición de Riesgo , Autoimagen , Índice de Severidad de la Enfermedad
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