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1.
Ann Surg Oncol ; 31(6): 4005-4017, 2024 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-38526832

RESUMEN

BACKGROUND: Unnecessary D2-gastrectomy and associated costs can be prevented after detecting non-curable gastric cancer, but impact of staging on treatment costs is unclear. This study determined the cost impact of 18F-fluorodeoxyglucose positron emission tomography/computed tomography (18FFDG-PET/CT) and staging laparoscopy (SL) in gastric cancer staging. MATERIALS AND METHODS: In this cost analysis, four staging strategies were modeled in a decision tree: (1) 18FFDG-PET/CT first, then SL, (2) SL only, (3) 18FFDG-PET/CT only, and (4) neither SL nor 18FFDG-PET/CT. Costs were assessed on the basis of the prospective PLASTIC-study, which evaluated adding 18FFDG-PET/CT and SL to staging advanced gastric cancer (cT3-4 and/or cN+) in 18 Dutch hospitals. The Dutch Healthcare Authority provided 18FFDG-PET/CT unit costs. SL unit costs were calculated bottom-up. Gastrectomy-associated costs were collected with hospital claim data until 30 days postoperatively. Uncertainty was assessed in a probabilistic sensitivity analysis (1000 iterations). RESULTS: 18FFDG-PET/CT costs were €1104 including biopsy/cytology. Bottom-up calculations totaled €1537 per SL. D2-gastrectomy costs were €19,308. Total costs per patient were €18,137 for strategy 1, €17,079 for strategy 2, and €19,805 for strategy 3. If all patients undergo gastrectomy, total costs were €18,959 per patient (strategy 4). Performing SL only reduced costs by €1880 per patient. Adding 18FFDG-PET/CT to SL increased costs by €1058 per patient; IQR €870-1253 in the sensitivity analysis. CONCLUSIONS: For advanced gastric cancer, performing SL resulted in substantial cost savings by reducing unnecessary gastrectomies. In contrast, routine 18FFDG-PET/CT increased costs without substantially reducing unnecessary gastrectomies, and is not recommended due to limited impact with major costs. TRIAL REGISTRATION: NCT03208621. This trial was registered prospectively on 30-06-2017.


Asunto(s)
Fluorodesoxiglucosa F18 , Gastrectomía , Laparoscopía , Estadificación de Neoplasias , Tomografía Computarizada por Tomografía de Emisión de Positrones , Radiofármacos , Neoplasias Gástricas , Neoplasias Gástricas/patología , Neoplasias Gástricas/cirugía , Neoplasias Gástricas/diagnóstico por imagen , Neoplasias Gástricas/economía , Humanos , Laparoscopía/economía , Laparoscopía/métodos , Tomografía Computarizada por Tomografía de Emisión de Positrones/economía , Tomografía Computarizada por Tomografía de Emisión de Positrones/métodos , Estudios Prospectivos , Gastrectomía/economía , Fluorodesoxiglucosa F18/economía , Radiofármacos/economía , Análisis Costo-Beneficio , Estudios de Seguimiento , Pronóstico , Costos y Análisis de Costo , Masculino , Femenino
2.
Sex Abuse ; 36(2): 135-157, 2024 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-36731100

RESUMEN

The predominant approach to understand dynamic risk factors of sexual reoffending has been referred to as the Propensities Model (Thornton, 2016). According to this model, dynamic risk factors can be conceptualized as latent constructs whose change alters the risk of sexual reoffending. Despite its strengths and contributions to research, this model does not offer answers to the question of how dynamic risk factors contribute to the risk of sexual reoffending, or of how sustained change in risk might take place. In this paper we introduce the Network-Based Model of Risk of Sexual Reoffending (NBM-RSR), which addresses several limitations and constraints of the Propensities Model and offers empirically testable propositions regarding the nature and development of the risk of sexual reoffending. The NBM-RSR considers risk of sexual reoffending to involve a self-sustaining network of causally connected dynamic risk factors. Consistent with this, an increased risk of sexual reoffending is characterized through a network that contains more and stronger interconnected dynamic risk factors with a higher strength. Sustained change in risk of sexual reoffending occurs when activity in the network exceeds a critical point resulting in a new self-sustaining network. Propositions based on the NBM-RSR are introduced and translated into testable hypotheses. These propositions revolve around (a) risk of sexual reoffending resulting from the construction of a network of causally connected dynamic risk factors, (b) network stability, sudden changes, and critical transitions, and (c) dynamic risk factors' relative influence on risk of sexual reoffending.


Asunto(s)
Delitos Sexuales , Adulto , Masculino , Humanos , Factores de Riesgo , Medición de Riesgo
3.
Thorax ; 78(5): 451-458, 2023 05.
Artículo en Inglés | MEDLINE | ID: mdl-36725331

RESUMEN

BACKGROUND: Maintenance and reliever therapy (MART) with inhaled corticosteroid (ICS)/formoterol effectively reduces exacerbations in asthma. We aimed to investigate its efficacy compared with fixed-dose fluticasone/salmeterol in chronic obstructive pulmonary disease (COPD). METHODS: Patients with COPD and ≥1 exacerbation in the previous 2 years were randomly assigned to open-label MART (Spiromax budesonide/formoterol 160/4.5 µg 2 inhalations twice daily+1 prn) or fixed-dose therapy (Diskus fluticasone propionate/salmeterol combination (FSC) 500/50 µg 1 inhalation twice daily+salbutamol 100 µg prn) for 1 year. The primary outcome was rate of moderate/severe exacerbations, defined by treatment with oral prednisolone and/or antibiotics. RESULTS: In total, 195 patients were randomised (MART Bud/Form n=103; fixed-dose FSC n=92). No significant difference was seen between MART and FSC therapy in exacerbation rates (1.32 vs 1.32 /year, respectively, rate ratio 1.05 (95% CI 0.79 to 1.39); p=0.741). No differences in lung function parameters or health status were observed. Total ICS dose was significantly lower with MART than FSC therapy (budesonide-equivalent 928 µg/day vs 1747 µg/day, respectively, p<0.05). Similar proportions of patients reported adverse events (MART Bud/Form: 73% vs fixed-dose FSC: 68%, p=0.408) and pneumonias (MART: 5% vs FSC: 1%, p=0.216). CONCLUSIONS: This first study of MART in COPD found that budesonide/formoterol MART might be similarly effective to fluticasone/salmeterol fixed-dose therapy in moderate to severe patients with COPD, at a lower daily ICS dosage. Further evidence is needed about long-term safety.


Asunto(s)
Broncodilatadores , Enfermedad Pulmonar Obstructiva Crónica , Humanos , Broncodilatadores/uso terapéutico , Etanolaminas/efectos adversos , Combinación de Medicamentos , Androstadienos/efectos adversos , Resultado del Tratamiento , Combinación Fluticasona-Salmeterol/uso terapéutico , Budesonida/efectos adversos , Fumarato de Formoterol/uso terapéutico , Enfermedad Pulmonar Obstructiva Crónica/tratamiento farmacológico , Combinación Budesonida y Fumarato de Formoterol/uso terapéutico , Corticoesteroides/uso terapéutico
4.
Ann Surg Oncol ; 30(13): 8203-8215, 2023 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-37523120

RESUMEN

BACKGROUND: This study assesses the incidence of gastrointestinal symptoms in the first year after resection of esophageal or gastric cancer and its association with health-related quality of life (HRQoL), functioning, work productivity, and daily activities. PATIENTS AND METHODS: Patients diagnosed with esophageal or gastric cancer between 2015 and 2021, who underwent a resection, and completed ≥ 2 questionnaires from the time intervals prior to resection and 0-3, 3-6, 6-9, and 9-12 months after resection were included. Multivariable generalized linear mixed models were used to assess changes in gastrointestinal symptoms over time and the impact of the number of gastrointestinal symptoms on HRQoL, functioning, work productivity, and daily activities for patients who underwent an esophagectomy or gastrectomy separately. RESULTS: The study population consisted of 961 (78.8%) and 259 (21.2%) patients who underwent an esophagectomy and gastrectomy, respectively. For both groups, the majority of gastrointestinal symptoms changed significantly over time. Most clinically relevant differences were observed 0-3 after resection compared with prior to resection and included increased diarrhea, appetite loss, and eating restrictions, and specifically after esophagectomy dry mouth, trouble with coughing, and trouble talking. At 9-12 after resection one or more severe gastrointestinal symptoms were reported by 38.9% after esophagectomy and 33.7% after gastrectomy. A higher number of gastrointestinal symptoms was associated with poorer functioning, lower HRQoL, higher impairment in daily activities, and lower work productivity. CONCLUSIONS: This study shows that gastrointestinal symptoms are frequently observed and burdensome after esophagectomy or gastrectomy, highlighting the importance to address these sequelae for high quality survivorship.


Asunto(s)
Neoplasias Esofágicas , Neoplasias Gástricas , Humanos , Estudios Longitudinales , Neoplasias Esofágicas/cirugía , Neoplasias Gástricas/cirugía , Incidencia , Calidad de Vida , Gastrectomía , Medición de Resultados Informados por el Paciente , Esofagectomía , Unión Esofagogástrica/cirugía
5.
Respir Res ; 24(1): 109, 2023 Apr 11.
Artículo en Inglés | MEDLINE | ID: mdl-37041539

RESUMEN

BACKGROUND: P2X3 receptor antagonists seem to have a promising potential for treating patients with refractory chronic cough. In this double-blind, randomized, placebo-controlled study, we investigated the efficacy, safety, and tolerability of the novel selective P2X3 receptor antagonist filapixant (BAY1902607) in patients with refractory chronic cough. METHODS: Following a crossover design, 23 patients with refractory chronic cough (age: 60.4 ± 9.1 years) received ascending doses of filapixant in one period (20, 80, 150, and 250 mg, twice daily, 4-days-on/3-days-off) and placebo in the other. The primary efficacy endpoint was the 24-h cough frequency on Day 4 of each dosing step. Further, subjective cough severity and health-related quality of life were assessed. RESULTS: Filapixant at doses ≥ 80 mg significantly reduced cough frequency and severity and improved cough health-related quality of life. Reductions in 24-h cough frequency over placebo ranged from 17% (80 mg dose) to 37% (250 mg dose), reductions over baseline from 23% (80 mg) to 41% (250 mg) (placebo: 6%). Reductions in cough severity ratings on a 100-mm visual analog scale ranged from 8 mm (80 mg) to 21 mm (250 mg). No serious or severe adverse events or adverse events leading to discontinuation of treatment were reported. Taste-related adverse events occurred in 4%, 13%, 43%, and 57% of patients treated with filapixant 20, 80, 150, and 250 mg, respectively, and in 12% treated with placebo. CONCLUSIONS: Filapixant proved to be efficacious, safe, and-apart from the occurrence of taste disturbances, especially at higher dosages-well tolerated during the short therapeutic intervention. Clinical trial registration EudraCT, eudract.ema.europa.eu, 2018-000129-29; ClinicalTrials.gov, NCT03535168.


Asunto(s)
Tos , Antagonistas del Receptor Purinérgico P2X , Humanos , Persona de Mediana Edad , Anciano , Tos/inducido químicamente , Calidad de Vida , Enfermedad Crónica , Método Doble Ciego
6.
Transgenic Res ; 32(4): 235-250, 2023 08.
Artículo en Inglés | MEDLINE | ID: mdl-37213044

RESUMEN

The initial compositional analysis of plants plays an important role within the internationally harmonized comparative safety assessment approach for genetically modified plants. Current EFSA guidance prescribes two types of comparison, namely difference tests with regard to a conventional comparator or control, and equivalence tests with regard to a collection of commercial reference varieties. The experience gained so far shows that most of the statistically significant differences between the test and control can be discounted based on the fact that they are still within equivalence limits of reference varieties with a presumed history of safe use. Inclusion of a test variety and reference varieties into field trial design, and of the statistical equivalence test would already suffice for the purpose of finding relevant parameters that warrant further assessment, hence both the inclusion of a conventional counterpart and the performance of difference testing can be omitted. This would also allow for the inclusion of safety testing regimes into plant variety testing VCU (value for cultivation and use) or other, independent variety trials.


Asunto(s)
Productos Agrícolas , Alimentos Modificados Genéticamente , Productos Agrícolas/genética , Plantas Modificadas Genéticamente/genética
7.
Dis Esophagus ; 36(6)2023 May 27.
Artículo en Inglés | MEDLINE | ID: mdl-36636758

RESUMEN

Anastomotic leakage is a feared complication after esophagectomy and associated with increased post-operative morbidity and mrotality. The aim of this study was to evaluate the management of leakage after robot-assisted minimally invasive esophagectomy (RAMIE) with intrathoracic anastomosis. From a single center prospectively maintained database, all patients with anastomotic leakages defined by the Esophageal Complications Consensus Group between 2016 and 2021 were included. Contained leakage was defined as presence of air or fluid at level of the anastomosis without the involvement of the mediastinum or thorax. Non-contained leakage was defined as mediastinitis and/or mediastinal/pleural fluid collections. The primary outcome was 90-day mortality and the secondary outcome was successful recovery. In this study, 40 patients with anastomotic leakage were included. The 90-day mortality rate was 3% (n = 1). Leakage was considered contained in 29 patients (73%) and non-contained in 11 patients (27%). In the contained group, the majority of the patients were treated non-surgically (n = 27, 93%) and management was successful in 22 patients (76%). In the non-contained group, all patients required a reoperation with thoracic drainage and management was successful in seven patients (64%). Management failed in 11 patients (28%) of whom 7 developed an esophagobronchial fistula, 3 had a disconnection of the anastomosis and 1 died of a septic bleeding. In conclusion, this study demonstrates that the management anastomotic leakage in patients who underwent RAMIE with an intrathoracic anastomosis was successful in 73% of the patients with a 90-day mortality rate of 3%. A differentiated approach for the management of intrathoracic anastomotic leakage is proposed.


Asunto(s)
Neoplasias Esofágicas , Robótica , Humanos , Fuga Anastomótica/etiología , Fuga Anastomótica/cirugía , Esofagectomía/efectos adversos , Anastomosis Quirúrgica/efectos adversos , Estudios Retrospectivos
8.
BMC Pulm Med ; 21(1): 289, 2021 Sep 10.
Artículo en Inglés | MEDLINE | ID: mdl-34507574

RESUMEN

BACKGROUND: Refractory dyspnea or breathlessness is a common symptom in patients with advanced chronic obstructive pulmonary disease (COPD), with a high negative impact on quality of life (QoL). Low dosed opioids have been investigated for refractory dyspnea in COPD and other life-limiting conditions, and some positive effects were demonstrated. However, upon first assessment of the literature, the quality of evidence in COPD seemed low or inconclusive, and focused mainly on morphine which may have more side effects than other opioids such as fentanyl. For the current publication we performed a systematic literature search. We searched for placebo-controlled randomized clinical trials investigating opioids for refractory dyspnea caused by COPD. We included trials reporting on dyspnea, health status and/or QoL. Three of fifteen trials demonstrated a significant positive effect of opioids on dyspnea. Only one of four trials reporting on QoL or health status, demonstrated a significant positive effect. Two-thirds of included trials investigated morphine. We found no placebo-controlled RCT on transdermal fentanyl. Subsequently, we hypothesized that both fentanyl and morphine provide a greater reduction of dyspnea than placebo, and that fentanyl has less side effects than morphine. METHODS: We describe the design of a robust, multi-center, double blind, double-dummy, cross-over, randomized, placebo-controlled clinical trial with three study arms investigating transdermal fentanyl 12 mcg/h and morphine sustained-release 10 mg b.i.d. The primary endpoint is change in daily mean dyspnea sensation measured on a numeric rating scale. Secondary endpoints are change in daily worst dyspnea, QoL, anxiety, sleep quality, hypercapnia, side effects, patient preference, and continued opioid use. Sixty patients with severe stable COPD and refractory dyspnea (FEV1 < 50%, mMRC ≥ 3, on optimal standard therapy) will be included. DISCUSSION: Evidence for opioids for refractory dyspnea in COPD is not as robust as usually appreciated. We designed a study comparing both the more commonly used opioid morphine, and transdermal fentanyl to placebo. The cross-over design will help to get a better impression of patient preferences. We believe our study design to investigate both sustained-release morphine and transdermal fentanyl for refractory dyspnea will provide valuable information for better treatment of refractory dyspnea in COPD. Trial registration NCT03834363 (ClinicalTrials.gov), registred at 7 Feb 2019, https://clinicaltrials.gov/ct2/show/NCT03834363 .


Asunto(s)
Analgésicos Opioides/administración & dosificación , Disnea/tratamiento farmacológico , Estado de Salud , Enfermedad Pulmonar Obstructiva Crónica/tratamiento farmacológico , Relación Dosis-Respuesta a Droga , Método Doble Ciego , Disnea/etiología , Fentanilo/administración & dosificación , Humanos , Morfina/administración & dosificación , Estudios Multicéntricos como Asunto , Enfermedad Pulmonar Obstructiva Crónica/complicaciones , Calidad de Vida , Ensayos Clínicos Controlados Aleatorios como Asunto , Proyectos de Investigación
9.
Eur Respir J ; 55(1)2020 01.
Artículo en Inglés | MEDLINE | ID: mdl-31515408

RESUMEN

These guidelines incorporate the recent advances in chronic cough pathophysiology, diagnosis and treatment. The concept of cough hypersensitivity has allowed an umbrella term that explains the exquisite sensitivity of patients to external stimuli such a cold air, perfumes, smoke and bleach. Thus, adults with chronic cough now have a firm physical explanation for their symptoms based on vagal afferent hypersensitivity. Different treatable traits exist with cough variant asthma (CVA)/eosinophilic bronchitis responding to anti-inflammatory treatment and non-acid reflux being treated with promotility agents rather the anti-acid drugs. An alternative antitussive strategy is to reduce hypersensitivity by neuromodulation. Low-dose morphine is highly effective in a subset of patients with cough resistant to other treatments. Gabapentin and pregabalin are also advocated, but in clinical experience they are limited by adverse events. Perhaps the most promising future developments in pharmacotherapy are drugs which tackle neuronal hypersensitivity by blocking excitability of afferent nerves by inhibiting targets such as the ATP receptor (P2X3). Finally, cough suppression therapy when performed by competent practitioners can be highly effective. Children are not small adults and a pursuit of an underlying cause for cough is advocated. Thus, in toddlers, inhalation of a foreign body is common. Persistent bacterial bronchitis is a common and previously unrecognised cause of wet cough in children. Antibiotics (drug, dose and duration need to be determined) can be curative. A paediatric-specific algorithm should be used.


Asunto(s)
Antitusígenos , Asma , Bronquitis , Adulto , Antitusígenos/uso terapéutico , Niño , Enfermedad Crónica , Tos/diagnóstico , Tos/tratamiento farmacológico , Humanos
10.
Eur J Cancer Care (Engl) ; 29(2): e13210, 2020 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-31863609

RESUMEN

OBJECTIVE: Chemotherapy in the last month of life for patients with metastatic lung cancer is often considered as aggressive end-of-life care. Targeted therapy with Tyrosine Kinase Inhibitors (TKIs) is a relatively new treatment of which not much is known yet about use in the last month of life. We examined what percentage of patients received chemotherapy or TKIs in the last month of life in the Netherlands. METHODS: Patient files were drawn from 10 hospitals across the Netherlands. Patients had to meet the following eligibility criteria: metastatic lung cancer; died between June 1, 2013 and July 31, 2015. RESULTS: From the included 1,322 patients, 39% received no treatment for metastatic lung cancer, 52% received chemotherapy and 9% received TKIs. A total of 232 patients (18%) received treatment in the last month of life (11% chemotherapy, 7% TKIs). From the patients who received chemotherapy, 145 (21%) received this in the last month of life and 79 (11%) started this treatment in the last month of life. TKIs were given and started more often in the last month of life: from the patients who received TKIs, 87 (72%) received this treatment in the last month of life and 15 (12%) started this treatment in the last month of life. CONCLUSION: A substantial percentage of patient received and even started chemotherapy or TKIs in the last month of life. For chemotherapy, this might be seen as aggressive care. TKIs are said to have less side effects, do not lead to many hospital visits and due to the rapid response, are considered good palliation. However, it is not known, yet possible that, when patients still receiving treatment until shortly before death, this might influence preparing for death in a negative way.


Asunto(s)
Antineoplásicos/uso terapéutico , Carcinoma de Pulmón de Células no Pequeñas/tratamiento farmacológico , Neoplasias Pulmonares/tratamiento farmacológico , Inhibidores de Proteínas Quinasas/uso terapéutico , Carcinoma Pulmonar de Células Pequeñas/tratamiento farmacológico , Cuidado Terminal , Factores de Edad , Anciano , Anciano de 80 o más Años , Carcinoma de Pulmón de Células no Pequeñas/genética , Carcinoma de Pulmón de Células no Pequeñas/secundario , Comorbilidad , Femenino , Humanos , Neoplasias Pulmonares/patología , Masculino , Persona de Mediana Edad , Países Bajos , Oncólogos/estadística & datos numéricos , Cuidados Paliativos , Estudios Retrospectivos , Carcinoma Pulmonar de Células Pequeñas/secundario
11.
N Engl J Med ; 372(1): 11-20, 2015 Jan 01.
Artículo en Inglés | MEDLINE | ID: mdl-25517348

RESUMEN

BACKGROUND: In patients with acute ischemic stroke caused by a proximal intracranial arterial occlusion, intraarterial treatment is highly effective for emergency revascularization. However, proof of a beneficial effect on functional outcome is lacking. METHODS: We randomly assigned eligible patients to either intraarterial treatment plus usual care or usual care alone. Eligible patients had a proximal arterial occlusion in the anterior cerebral circulation that was confirmed on vessel imaging and that could be treated intraarterially within 6 hours after symptom onset. The primary outcome was the modified Rankin scale score at 90 days; this categorical scale measures functional outcome, with scores ranging from 0 (no symptoms) to 6 (death). The treatment effect was estimated with ordinal logistic regression as a common odds ratio, adjusted for prespecified prognostic factors. The adjusted common odds ratio measured the likelihood that intraarterial treatment would lead to lower modified Rankin scores, as compared with usual care alone (shift analysis). RESULTS: We enrolled 500 patients at 16 medical centers in The Netherlands (233 assigned to intraarterial treatment and 267 to usual care alone). The mean age was 65 years (range, 23 to 96), and 445 patients (89.0%) were treated with intravenous alteplase before randomization. Retrievable stents were used in 190 of the 233 patients (81.5%) assigned to intraarterial treatment. The adjusted common odds ratio was 1.67 (95% confidence interval [CI], 1.21 to 2.30). There was an absolute difference of 13.5 percentage points (95% CI, 5.9 to 21.2) in the rate of functional independence (modified Rankin score, 0 to 2) in favor of the intervention (32.6% vs. 19.1%). There were no significant differences in mortality or the occurrence of symptomatic intracerebral hemorrhage. CONCLUSIONS: In patients with acute ischemic stroke caused by a proximal intracranial occlusion of the anterior circulation, intraarterial treatment administered within 6 hours after stroke onset was effective and safe. (Funded by the Dutch Heart Foundation and others; MR CLEAN Netherlands Trial Registry number, NTR1804, and Current Controlled Trials number, ISRCTN10888758.).


Asunto(s)
Isquemia Encefálica/terapia , Fibrinolíticos/uso terapéutico , Trombolisis Mecánica , Accidente Cerebrovascular/terapia , Activador de Tejido Plasminógeno/uso terapéutico , Activador de Plasminógeno de Tipo Uroquinasa/uso terapéutico , Enfermedad Aguda , Adulto , Anciano , Anciano de 80 o más Años , Isquemia Encefálica/tratamiento farmacológico , Cateterismo , Terapia Combinada , Femenino , Humanos , Modelos Logísticos , Masculino , Persona de Mediana Edad , Oportunidad Relativa , Método Simple Ciego , Accidente Cerebrovascular/tratamiento farmacológico
13.
Am J Occup Ther ; 72(4): 7204195030p1-7204195030p9, 2018.
Artículo en Inglés | MEDLINE | ID: mdl-29953833

RESUMEN

OBJECTIVE: Homelessness prematurely ages people. A large subgroup of formerly homeless adults between ages 40 and 64 yr have health conditions similar to or worse than people categorized as elderly. Little is known about the impact of this group's chronic health conditions on their ability to safely function in supportive housing. METHOD: Home safety visits were carried out with 25 formerly homeless adults, ages 40-64 yr, now residing in supportive housing. RESULTS: Participants had physical, cognitive, and mental health problems that significantly interfered with their ability to perform daily life skills, safely function in an apartment, and manage chronic health conditions. Home safety hazards included cluttered walking paths, the presence of steps, and the lack of grab bars and nonskid flooring. CONCLUSION: The homeless population would benefit from aging specialists, such as occupational therapists, who could help people to maintain and function more safely in their homes. Without such services, this population may be at risk for home safety events leading to hospitalization and mortality.


Asunto(s)
Accidentes por Caídas/prevención & control , Envejecimiento/fisiología , Personas con Mala Vivienda/psicología , Trastornos Mentales/rehabilitación , Adulto , Envejecimiento/psicología , Vivienda , Humanos , Persona de Mediana Edad
14.
Faraday Discuss ; 197: 117-151, 2017 04 28.
Artículo en Inglés | MEDLINE | ID: mdl-28186212

RESUMEN

A multi-site microkinetic model for the Fischer-Tropsch synthesis (FTS) reaction up to C2 products on a FCC cobalt catalyst surface is presented. This model utilizes a multi-faceted cobalt nanoparticle model for the catalyst, consisting of the two dominant cobalt surface facets Co(111) and Co(100), and a step site represented by the Co(211) surface. The kinetic parameters for the intermediates and transition states on these sites were obtained using plane-wave, periodic boundary condition density functional theory. Using direct DFT data as is, the microkinetic results disagree with the expected experimental results. Employing an exploratory approach, a small number of microkinetic model modifications were tested, which significantly improved correspondence to the expected experimental results. Using network flux and sensitivity analysis, an in-depth discussion is given on the relative reactivity of the various sites, CO activation mechanisms, the nature of the reactive chain growth monomer, the probable C2 formation mechanism, the active site ensemble interplay and the very important role of CO* surface coverage. The findings from the model scenarios are discussed with the aim of guiding future work in understanding the FTS mechanism and subsequent controlling kinetic parameters.

15.
Headache ; 57(8): 1252-1260, 2017 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-28524254

RESUMEN

OBJECTIVE: We examined the costs and benefits of introducing migraine nurses into primary care. BACKGROUND: Migraine is one of the most costly neurological diseases. METHODS: We analyzed data from our earlier nonrandomized cohort study comparing an intervention group of 141 patients, whose care was supported by nurses trained in migraine management, and a control group of 94 patients receiving usual care. Estimates of per-person direct costs were based on nurses' salaries and referrals to neurologists. Indirect costs were estimated as lost productivity, including numbers of days of absenteeism or with <50% productivity at work due to migraine, and notional costs related to lost days of household activities or days of <50% household productivity. Analysis was conducted from the payer's perspective. RESULTS: After 9 months the direct costs were €281.11 in the control group against €332.23 in the intervention group (mean difference -51.12; 95% CI: -113.20-15.56; P = .134); the indirect costs were €1985.51 in the control group against €1631.75 in the intervention group (mean difference 353.75; 95% CI: -355.53-1029.82; P = .334); and total costs were €2266.62 in the control group, against €1963.99 in the intervention group (mean difference 302.64; 95% CI: -433.46-1001.27; P = .438). When costs attributable to lost household productivity were included, total costs increased to €6076.62 in the control group and €5048.15 in the intervention group (mean difference 1028.47; 95% CI: -590.26-2603.67; P = .219). CONCLUSION: Migraine nurses in primary care seemed in this study to increase practice costs but decrease total societal costs. However, it was a nonrandomized study, and the differences did not reach significance. For policy-makers concerned with headache-service organization and delivery, the important messages are that we found no evidence that nurses increased overall costs, and investment in a definitive study would therefore be worthwhile.


Asunto(s)
Análisis Costo-Beneficio , Trastornos Migrañosos/economía , Trastornos Migrañosos/terapia , Enfermeras y Enfermeros/economía , Atención Primaria de Salud/economía , Atención Primaria de Salud/métodos , Absentismo , Adulto , Costo de Enfermedad , Femenino , Estudios de Seguimiento , Costos de la Atención en Salud , Humanos , Masculino , Países Bajos , Neurólogos/economía , Derivación y Consulta/economía , Salarios y Beneficios , Factores Sexuales , Factores de Tiempo
17.
J Cardiovasc Electrophysiol ; 27(1): 22-30, 2016 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-26511713

RESUMEN

BACKGROUND: Catheter ablation strategies beyond pulmonary vein isolation (PVI) for treatment of atrial fibrillation (AF) are less well defined. Increasing clinical data indicate that atrial fibrosis is a critical common left atrial (LA) substrate in AF patients (pts). OBJECTIVE: We applied a new substrate modification concept according to the individual fibrotic substrate as estimated from electroanatomic voltage mapping (EAVM) in 41 pts undergoing catheter ablation of AF. RESULTS: First, EAVM during sinus rhythm was done in redo cases of 10 pts with paroxysmal AF despite durable PVI. Confluent low-voltage areas (LVA) were found in all pts and were targeted with circumferential isolation, so-called box isolation of fibrotic areas (BIFA). This strategy led to stable sinus rhythm in 9/10 pts and was transferred prospectively to first procedures of 31 pts with nonparoxysmal AF. In 13 pts (42%), no LVA (<0.5 mV) were identified, and only PVI was performed. In 18 pts (58%), additional BIFA strategies were applied (posterior box in 5, anterior box in 7, posterior plus anterior box in 5, no box in 1 due to diffuse fibrosis). Mean follow-up was 12.5 ± 2.4 months. Single-procedure freedom from AF/atrial tachycardia was achieved in 72.2% of pts and in 83.3% of pts with 1.17 procedures/patient. CONCLUSIONS: In approximately 40% of pts with nonparoxysmal AF, no substantial LVA were identified, and PVI alone showed high success rate. In pts with paroxysmal AF despite durable PVI and in approximately 60% of pts with nonparoxysmal AF, individually localized LVA were identified and could be targeted successfully with the BIFA strategy.


Asunto(s)
Fibrilación Atrial/cirugía , Ablación por Catéter/métodos , Atrios Cardíacos/cirugía , Sistema de Conducción Cardíaco/cirugía , Potenciales de Acción , Anciano , Fibrilación Atrial/diagnóstico , Fibrilación Atrial/fisiopatología , Supervivencia sin Enfermedad , Técnicas Electrofisiológicas Cardíacas , Femenino , Fibrosis , Atrios Cardíacos/patología , Atrios Cardíacos/fisiopatología , Sistema de Conducción Cardíaco/patología , Sistema de Conducción Cardíaco/fisiopatología , Frecuencia Cardíaca , Humanos , Estimación de Kaplan-Meier , Masculino , Persona de Mediana Edad , Selección de Paciente , Valor Predictivo de las Pruebas , Recurrencia , Reoperación , Factores de Tiempo , Resultado del Tratamiento
18.
Org Biomol Chem ; 13(6): 1639-42, 2015 Feb 14.
Artículo en Inglés | MEDLINE | ID: mdl-25530471

RESUMEN

Patterning of multiple bacterial strains in one system is achieved by employing a single photo-activated antibiotic. Varying the light-exposure time results in zones with mixed and single populations.


Asunto(s)
Antibacterianos/farmacología , Escherichia coli/efectos de los fármacos , Luz , Micrococcus luteus/efectos de los fármacos , Antibacterianos/química , Escherichia coli/crecimiento & desarrollo , Pruebas de Sensibilidad Microbiana , Micrococcus luteus/crecimiento & desarrollo , Estructura Molecular , Relación Estructura-Actividad
19.
Respirology ; 20(2): 279-85, 2015 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-25400242

RESUMEN

BACKGROUND AND OBJECTIVE: Telemedicine, care provided by electronic communication, may serve as an alternative or extension to traditional outpatient visits. This pilot study determined the effects of telemedicine on health-care utilization and health status of chronic obstructive pulmonary disease (COPD) patients. METHODS: One hundred and one patients were randomized, 52 patients received telemedicine care and 49 had traditional outpatient visits. The primary outcome was COPD-specific health status, measured with the Clinical COPD Questionnaire (CCQ). Secondary outcomes included St. George's Respiratory Questionnaire (SGRQ) and the Short Form-36 (SF-36) and resource use in primary and secondary care. RESULTS: The mean age of the participants was 68 ± 9 years and the mean per cent of predicted forced expiratory volume in 1 s was 40.4 ± 12.5. The CCQ total score deteriorated by 0.14 ± 0.13 in the telemedicine group, and improved by -0.03 ± 0.14 in the control group (difference 0.17 ± 0.19, 95% confidence interval (CI): -0.21-0.55, P = 0.38). The CCQ symptom domain showed a significant and clinically relevant difference in favour of the control group, 0.52 ± 0.24 (95% CI: 0.04-0.10, P = 0.03). Similar results were found for the SGRQ, whereas results for SF-36 were inconsistent. Patients in the control group had significantly fewer visits to the pulmonologist in comparison to patients in the telemedicine group (P = 0.05). The same trend, although not significant, was found for exacerbations after 6 months. CONCLUSIONS: This telemedicine model of initiated phone calls by a health-care provider had a negative effect on health status and resource use in primary and secondary care, in comparison with usual care and therefore cannot be recommended in COPD patients in its current form.


Asunto(s)
Servicios de Salud/estadística & datos numéricos , Estado de Salud , Enfermedad Pulmonar Obstructiva Crónica/enfermería , Telemedicina/métodos , Anciano , Atención Ambulatoria , Femenino , Estudios de Seguimiento , Volumen Espiratorio Forzado , Humanos , Masculino , Persona de Mediana Edad , Visita a Consultorio Médico , Proyectos Piloto , Pautas de la Práctica en Enfermería , Enfermedad Pulmonar Obstructiva Crónica/fisiopatología , Encuestas y Cuestionarios , Teléfono
20.
Arch Phys Med Rehabil ; 96(10): 1845-9, 2015 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-26143054

RESUMEN

OBJECTIVE: To determine the optimal cutoff scores for the Fugl-Meyer Assessment of the Upper Extremity (FMA-UE) with regard to predicting no, poor, limited, notable, or full upper-limb capacity according to frequently used cutoff points for the Action Research Arm Test (ARAT) at 6 months poststroke. DESIGN: Prospective. SETTING: Rehabilitation center. PARTICIPANTS: Patients (N=460) with a first-ever ischemic stroke at 6 months poststroke. INTERVENTIONS: Not applicable. MAIN OUTCOME MEASURES: Based on the ARAT classification of poor to full upper-limb capacity, receiver operating characteristic curves were used to calculate the area under the curve, optimal cutoff points for the FMA-UE were determined, and a weighted kappa was used to assess the agreement. RESULTS: FMA-UE scores of 0 through 22 represent no upper-limb capacity (ARAT 0-10); scores of 23 through 31 represent poor capacity (ARAT 11-21); scores of 32 through 47 represent limited capacity (ARAT 22-42); scores of 48 through 52 represent notable capacity (ARAT 43-54); and scores of 53 through 66 represent full upper-limb capacity (ARAT 55-57). Overall, areas under the curve ranged from .916 (95% confidence interval [CI], .890-.943) to .988 (95% CI, .978-.998; P<.001). CONCLUSIONS: There is considerable overlap in the area under the curve between the ARAT and FMA-UE. FMA-UE scores >31 points correspond to no to poor arm-hand capacity (ie, ≤21 points) on the ARAT, whereas FMA-UE scores >31 correspond to limited to full arm-hand capacity (ie, ≥22 points) on the ARAT.


Asunto(s)
Evaluación de la Discapacidad , Recuperación de la Función/fisiología , Rehabilitación de Accidente Cerebrovascular , Accidente Cerebrovascular/fisiopatología , Extremidad Superior/fisiopatología , Anciano , Femenino , Humanos , Masculino , Persona de Mediana Edad , Actividad Motora/fisiología , Debilidad Muscular/fisiopatología , Estudios Prospectivos , Resultado del Tratamiento
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