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1.
J Endocrinol Invest ; 47(7): 1743-1750, 2024 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-38198073

RESUMEN

PURPOSE: Growth hormone deficiency (GHD) is a rare condition with a worldwide prevalence of 1 patient in 4000 to 10,000 live births, placing a significant economic burden on healthcare systems. The aim of this study is to generate evidence on the economic burden of children and adolescents with GHD treated with rhGH and their parents in Italy. METHODS: A cost of illness analysis, adopting the prevalence approach, has been developed, producing evidence on the total annual cost sustained by the Italian National Health System (NHS) and by the society. The study is based on original data collected from a survey conducted among Italian children and adolescents with GHD and their parents. RESULTS: 143 children/adolescents with GHD and their parents participated to the survey, conducted from May to October 2021. Patients had a mean age of 12.2 years (SD: 3.1) and were mostly males (68.5%). The average direct healthcare cost sustained by the NHS was € 8,497.2 per patient/year; adding the out-of-pocket expenses (co-payments and expenses for private healthcare service), the total expense was € 8,568.6. The indirect costs, assessed with the human capital approach, were € 847.9 per patient/year. The total of direct and indirect cost is € 9,345.1 from the NHS perspective, and € 9,416.5 from a social perspective. The total cost incurred by the Italian NHS for children with GHD (range: 5,708-8,354) was estimated in € 48.5-71.0 million, corresponding to 0.04-0.06% of the total Italian public health expense in the year 2020. CONCLUSIONS: The total annual cost for GHD children is close to € 10,000, and is mainly due to the cost of rhGH treatment. This cost is almost entirely sustained by the NHS, with negligible out-of-pocket expenses. The economic burden on the Italian NHS for the health care of established GHD children is fourfold higher than the prevalence of the disease in the overall Italian population.


Asunto(s)
Costo de Enfermedad , Costos de la Atención en Salud , Hormona de Crecimiento Humana , Humanos , Masculino , Italia/epidemiología , Niño , Femenino , Adolescente , Hormona de Crecimiento Humana/deficiencia , Hormona de Crecimiento Humana/economía , Hormona de Crecimiento Humana/uso terapéutico , Costos de la Atención en Salud/estadística & datos numéricos , Gastos en Salud/estadística & datos numéricos , Enanismo Hipofisario/economía , Enanismo Hipofisario/epidemiología , Enanismo Hipofisario/tratamiento farmacológico , Trastornos del Crecimiento/economía , Trastornos del Crecimiento/epidemiología , Prevalencia , Padres
2.
J Endocrinol Invest ; 46(8): 1685-1694, 2023 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-36763246

RESUMEN

PURPOSE: Childhood overweight and obesity associated with insulin resistance and metabolic syndrome represent the new global pandemic and the main causative factors for dysglycemia, prediabetes, and Type 2 Diabetes Mellitus (T2DM). Predictors, such as HOMA-IR, HOMA-ß%, and QUICKI lack specific reference values in children. OGTT is a gold standard for glycometabolic assessment. Recently, a glycemic level higher than 155 mg/dl at + 60' after glucose ingestion has been defined as a risk factor for T2DM in obese adolescents. We aim to analyze and correlate fasting insulin-resistance markers with OGTT results in overweight/obese children and adolescents. METHODS: We retrospectively evaluated glucose and insulin values during a 2-h OGTT every 30 min in 236 overweight/obese patients. Glucose values and insulin sum during OGTT were compared to glycometabolic indexes and different cut-off values for insulin sum. RESULTS: A 1-h glucose > 155 mg/dl and insulin sum > 535 microU/ml at all times during OGTT are the best predictors of diabetes risk in obese youths. A1-h glucose > 155 mg/dl is significantly associated with HbA1c > 5.7%, while no association was observed between HbA1c > 5.7% and glucose levels at baseline and 2 h. The ability of the standardized HOMA-IR to predict the prediabetes status is clearly lower than the total insulin sum at OGTT. CONCLUSION: Our study demonstrates that also 1-h post-OGTT glucose, together with HbA1c, is an effective diabetes predictor.


Asunto(s)
Diabetes Mellitus Tipo 2 , Resistencia a la Insulina , Obesidad Infantil , Estado Prediabético , Adolescente , Humanos , Niño , Glucosa/metabolismo , Obesidad Infantil/complicaciones , Obesidad Infantil/diagnóstico , Prueba de Tolerancia a la Glucosa , Estado Prediabético/diagnóstico , Diabetes Mellitus Tipo 2/diagnóstico , Hemoglobina Glucada , Sobrepeso , Estudios Retrospectivos , Insulina , Glucemia/metabolismo
3.
J Endocrinol Invest ; 46(12): 2513-2523, 2023 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-37209402

RESUMEN

PURPOSE: The aim of this study was to produce evidence on quality of life (QoL) among Italian growth hormone deficiency (GHD) children and adolescents treated with growth hormone (GH) and their parents. METHODS: A survey was conducted among Italian children and adolescents aged 4-18 with a confirmed diagnosis of GHD and treated with GH therapy and their parents. The European Quality of Life 5 Dimensions 3 Level Version (EQ-5D-3L) and the Quality of Life in Short Stature Youth (QoLISSY) questionnaires were administered between May and October 2021 through the Computer-Assisted Personal Interview (CAPI) method. Results were compared with national and international reference values. RESULTS: The survey included 142 GHD children/adolescents and their parents. The mean EQ-5D-3L score was 0.95 [standard deviation (SD) 0.09], while the mean visual analogue scale (VAS) score was 86.2 (SD 14.2); the scores are similar to those of a reference Italian population aged 18-24 of healthy subjects. As for the QoLISSY child-version, compared to the international reference values for GHD/ idiopathic short stature (ISS) patients, we found a significantly higher score for the physical domain, and lower scores for coping and treatment; compared to the specific reference values for GHD patients, our mean scores were significantly lower for all domains except the physical one. As for the parents, we found a significantly higher score for the physical domain, and a lower score for treatment; compared to reference values GHD-specific, we found lower score in the social, emotional, treatment, parental effects, and total score domains. CONCLUSIONS: Our results suggest that the generic health-related quality of life (HRQoL) in treated GHD patients is high, comparable to that of healthy people. The QoL elicited by a disease specific questionnaire is also good, and comparable with that of international reference values of GHD/ISS patients.


Asunto(s)
Enanismo Hipofisario , Hormona de Crecimiento Humana , Humanos , Adolescente , Calidad de Vida/psicología , Cuidadores , Enanismo Hipofisario/tratamiento farmacológico , Enanismo Hipofisario/epidemiología , Enanismo Hipofisario/psicología , Italia/epidemiología , Hormona de Crecimiento Humana/uso terapéutico , Hormona del Crecimiento , Encuestas y Cuestionarios
4.
J Endocrinol Invest ; 46(7): 1397-1406, 2023 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-36708456

RESUMEN

PURPOSE: 25OHD levels in patients with Prader-Willi Syndrome (PWS), the most frequent cause of genetic obesity with a peculiar fat mass distribution, are still debated. Insulin resistance (IR), Body Mass Index-SDS (BMI-SDS), Growth Hormone Therapy (GHT), and puberty onset seem to interact with 25OHD levels. The objectives of the study are: (1) To analyze 25OHD levels in pediatric PWS patients in comparison with a control group (CNT) (2) To evaluate a possible correlation between BMI-SDS, HOMA-IR, puberty, GHT, and 25OHD levels. METHODS: This is a retrospective case-control, multicenter study. Data were collected among 8 different Italian Hospitals (outpatient clinics), over a period of four years (2016-2020). We included 192 genetically confirmed PWS and 192 CNT patients, aged 3-18 years, matched 1:1 for age, gender, BMI-SDS, Tanner stage, sun exposure, and month of recruitment. RESULTS: No statistically significant differences in 25OHD levels were observed between the PWS population and the CNT (PWS 24.0 ng/mL vs CNT 22.5 ng/mL, p > 0.05), OR = 0.89 (95% CI 0.58-1.35). We observed a slight, although non-significant, reduction in 25OHD levels comparing NW and OB populations. HOMA-IR, puberty onset, genotype and GHT (previous or ongoing) did not show statistically significant correlation with 25OHD levels. CONCLUSIONS: Our findings could be useful for clinicians to optimize the therapeutic management as well as to increase awareness of PWS.


Asunto(s)
Hormona de Crecimiento Humana , Resistencia a la Insulina , Síndrome de Prader-Willi , Niño , Humanos , Adolescente , Síndrome de Prader-Willi/tratamiento farmacológico , Estudios de Casos y Controles , Estudios Retrospectivos , Hormona de Crecimiento Humana/uso terapéutico , Italia , Vitamina D/uso terapéutico
5.
Eur Ann Allergy Clin Immunol ; 55(6): 294-302, 2023 11.
Artículo en Inglés | MEDLINE | ID: mdl-35850501

RESUMEN

Summary: Background. Kounis syndrome (KS) is defined as a rare cause of an acute coronary syndrome associated with systemic allergic reactions. To establish the prevalence of KS among the patients with diagnosis of anaphylaxis, we described clinical features, cardiological and allergological outcomes of patients evaluated in our allergy outpatient clinic. Methods. A retrospective study was carried out in the Allergy Unit of Novara hospital, from January 2008 to March 2020. Skin tests and in vitro tests were performed with suspected etiological agents. Results. We found 9 adults with KS (2%) out of 444 subjects who had experienced anaphylactic reactions (4/9 to Hymenoptera stings, 5/9 to drugs). Conclusions. The present study highlights the importance of suspicion of KS that appears not so uncommon in patients with anaphylaxis. KS seems to be a rare disease because unrecognized in diagnosis of anaphylaxis.


Asunto(s)
Anafilaxia , Himenópteros , Mordeduras y Picaduras de Insectos , Síndrome de Kounis , Adulto , Animales , Humanos , Anafilaxia/diagnóstico , Anafilaxia/epidemiología , Anafilaxia/etiología , Síndrome de Kounis/diagnóstico , Síndrome de Kounis/epidemiología , Síndrome de Kounis/etiología , Estudios Retrospectivos , Mordeduras y Picaduras de Insectos/complicaciones
6.
Teach Learn Med ; 33(2): 139-153, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-33289589

RESUMEN

Phenomenon: Because of its importance in residency selection, the United States Medical Licensing Examination Step 1 occupies a critical position in medical education, stimulating national debate about appropriate score use, equitable selection criteria, and the goals of undergraduate medical education. Yet, student perspectives on these issues and their implications for engagement with health systems science-related curricular content are relatively underexplored. Approach: We conducted an online survey of medical students at 19 American allopathic medical schools from March-July, 2019. Survey items were designed to elicit student opinions on the Step 1 examination and the impact of the examination on their engagement with new, non-test curricular content related to health systems science. Findings: A total of 2856 students participated in the survey, representing 23.5% of those invited. While 87% of students agreed that doing well on the Step 1 exam was their top priority, 56% disagreed that studying for Step 1 had a positive impact on engagement in the medical school curriculum. Eighty-two percent of students disagreed that Step 1 scores should be the top item residency programs use to offer interviews. When asked whether Step 1 results should be reported pass/fail with no numeric score, 55% of students agreed, while 33% disagreed. The majority of medical students agreed that health systems science topics were important but disagreed that studying for Step 1 helped learn this content. Students reported being more motivated to study a topic if it was on the exam, part of a course grade, prioritized by residency program directors, or if it would make them a better physician in the future. Insights: These results confirm the primacy of the United States Medical Licensing Examination Step 1 exam in preclinical medical education and demonstrate the need to balance the objectives of medical licensure and residency selection with the goals of the broader medical profession. The survey responses suggest several potential solutions to increase student engagement in health systems science curricula which may be especially important after Step 1 examination results are reported as pass/fail.


Asunto(s)
Educación de Pregrado en Medicina , Internado y Residencia , Estudiantes de Medicina , Actitud , Evaluación Educacional , Humanos , Licencia Médica , Estados Unidos
7.
Crit Care Nurs Q ; 41(1): 38-46, 2018.
Artículo en Inglés | MEDLINE | ID: mdl-29210765

RESUMEN

Although progress has been made in decreasing health care-associated infections (HAI) in intensive care unit (ICU) patients, there has been an increase in HAI caused by drug-resistant pathogens, particularly those that contaminate the environment such as methicillin-resistant Staphylococcus aureus, vancomycin-resistant Enterococcus, Pseudomonas spp, Acinetobacter spp, and Clostridium difficile. The ICU environment including sinks and medical equipment has been identified as being at risk for contamination and associated with cross-transmission of pathogens between the health care provider, the environment, and the patient. This article addresses the role of the ICU nurse as a team facilitator collaborating with environmental services, infection preventionists, and others to influence ICU design during preconstruction planning and unit environmental hygiene after construction to promote patient safety and prevent HAI associated with contaminated environments and equipment.


Asunto(s)
Enfermería de Cuidados Críticos/normas , Infección Hospitalaria/prevención & control , Arquitectura y Construcción de Hospitales/métodos , Control de Infecciones/métodos , Seguridad del Paciente/normas , Infección Hospitalaria/transmisión , Resistencia a Múltiples Medicamentos , Personal de Salud , Humanos , Unidades de Cuidados Intensivos/normas , Staphylococcus aureus Resistente a Meticilina/aislamiento & purificación
8.
Dis Aquat Organ ; 102(1): 53-64, 2012 Dec 03.
Artículo en Inglés | MEDLINE | ID: mdl-23209078

RESUMEN

Emamectin benzoate (an avermectin chemotherapeutant administered to fish as an in-feed treatment) has been used to treat infestations of sea lice Lepeophtheirus salmonis on farmed Atlantic salmon Salmo salar in the Bay of Fundy, New Brunswick, Canada, since 1999. This retrospective study examined the effectiveness of 114 emamectin benzoate treatment episodes from 2004 to 2008 across 54 farms. Study objectives were to establish whether changes in the effectiveness of emamectin benzoate were present for this period, examine factors associated with treatment outcome, and determine variables that influenced differences in L. salmonis abundance after treatment. The analysis was carried out in 2 parts: first, trends in treatment effectiveness and L. salmonis abundance were explored, and second, statistical modelling (linear and logistic regression) was used to examine the effects of multiple variables on post-treatment abundance and treatment outcome. Post-treatment sea lice abundance increased in the later years examined. Mean abundance differed between locations in the Bay of Fundy, and higher numbers were found at farms closer to the mainland and lower levels were found in the areas around Grand Manan Island. Treatment effectiveness varied by geographical region and decreased over time. There was an increased risk for unsuccessful treatments in 2008, and treatments applied during autumn months were more likely to be ineffective than those applied during summer months.


Asunto(s)
Copépodos , Infestaciones Ectoparasitarias/veterinaria , Enfermedades de los Peces/tratamiento farmacológico , Ivermectina/análogos & derivados , Salmo salar , Animales , Antiparasitarios/uso terapéutico , Acuicultura , Canadá/epidemiología , Infestaciones Ectoparasitarias/tratamiento farmacológico , Infestaciones Ectoparasitarias/epidemiología , Infestaciones Ectoparasitarias/parasitología , Enfermedades de los Peces/epidemiología , Enfermedades de los Peces/parasitología , Ivermectina/uso terapéutico , Modelos Lineales , Modelos Biológicos , Modelos Estadísticos
9.
J Infect Prev ; 22(5): 195-202, 2021 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-34659457

RESUMEN

BACKGROUND: Hand hygiene is paramount in preventing the spread of healthcare-associated infections especially during disease epidemics. Compliance rates with hand hygiene policies remain below 50% internationally and may be lower in the outpatient care setting. This study assessed the impact of the patient empowerment model on hand hygiene compliance among healthcare providers. METHODS: From October 2016 to May 2017, patients from a large ambulatory oncology centre were prospectively enrolled. Patients were instructed to observe healthcare providers for hand hygiene compliance and to remind healthcare providers where it was not observed during at least three consecutive encounters. Healthcare provider reactions to this intervention were rated by patients. Patients' hand hygiene knowledge and beliefs were objectively elicited pre and post-study. RESULTS: Thirty patients with a median age of 52 years (range 5-91) completed the study for a total of 190 healthcare provider encounters. When initial hand hygiene was not observed, patients offered a reminder in 71 (37.4%) encounters, did not offer a reminder in 73 (38.4%) encounters and forgot to offer a reminder in 24 (14.2%) encounters. Patients perceived positive or neutral reactions in 76.8% of encounters and negative or surprised reactions in 23.2% of encounters. Healthcare provider compliance improved from 11.6% to 48.9% with intervention. Patient hand hygiene knowledge improved by 16% following the study. CONCLUSIONS: Patient-empowered hand hygiene may be a useful adjunct for improving hand hygiene compliance among healthcare providers and improving patient hand hygiene knowledge, although it may confer an emotional burden on patients.

10.
Comput Biol Med ; 136: 104661, 2021 09.
Artículo en Inglés | MEDLINE | ID: mdl-34332350

RESUMEN

Up to one-third of patients undergoing cardiac resynchronization therapy (CRT) are nonresponders. Multipoint bicathodic and cathodic-anodal left ventricle (LV) stimulations could overcome this clinical challenge, but their effectiveness remains controversial. Here we evaluate the performance of such stimulations through both in vivo and in silico experiments, the latter based on computer electromechanical modeling. Seven patients, all candidates for CRT, received a quadripolar LV lead. Four stimulations were tested: right ventricular (RVS); conventional single point biventricular (S-BS); multipoint biventricular bicathodic (CC-BS) and multipoint biventricular cathodic-anodal (CA-BS). The following parameters were processed: QRS duration; maximal time derivative of arterial pressure (dPdtmax); systolic arterial pressure (Psys); and stroke volume (SV). Echocardiographic data of each patient were then obtained to create an LV geometric model. Numerical simulations were based on a strongly coupled Bidomain electromechanical coupling model. Considering the in vivo parameters, when comparing S-BS to RVS, there was no significant decrease in SV (from 45 ± 11 to 44 ± 20 ml) and 6% and 4% increases of dPdtmax and Psys, respectively. Focusing on in silico parameters, with respect to RVS, S-BS exhibited a significant increase of SV, dPdtmax and Psys. Neither the in vivo nor in silico results showed any significant hemodynamic and electrical difference among S-BS, CC-BS and CA-BS configurations. These results show that CC-BS and CA-BS yield a comparable CRT performance, but they do not always yield improvement in terms of hemodynamic parameters with respect to S-BS. The computational results confirmed the in vivo observations, thus providing theoretical support to the clinical experiments.


Asunto(s)
Terapia de Resincronización Cardíaca , Simulación por Computador , Humanos
11.
Int J Cardiol ; 327: 176-182, 2021 03 15.
Artículo en Inglés | MEDLINE | ID: mdl-33152418

RESUMEN

BACKGROUND: Peripheral arterial disease (PAD) was reported to increase the risk of new cardiovascular events in patients with acute coronary syndromes (ACS). However, most of the evidence comes from randomized clinical trials. We aimed to assess the impact of PAD on cardiovascular outcome and treatment decisions in ACS patients in a current real-life setting. METHODS: START-ANTIPLATELET is a multicenter registry enrolling ACS patient. Baseline clinical characteristics and treatment at discharge were recorded and follow-up was repeated at 6-months and 1-year. PAD was defined as intermittent claudication and/or previous revascularization. RESULTS: Among 1442 patients enrolled, 103 (7.1%) had PAD. PAD patients were older (71.8 ± 10.6vs66.2 ± 12.6 yrs., p < 0.0001), more frequently hypertensive (90.3vs68.6%, p< 0.0001), hypercholesterolemic (66vs52%, p= 0.037), diabetic (51.5vs24%, p= 0.0001), obese (28.2vs19.3%, p= 0.029) and with previous TIA (7.8vs2.8%, p= 0.005) or stroke (11.7vs3.1%, p< 0.0001). Clinical presentation and acute treatment were similar in non-PAD and PAD patients, but the latter were discharged significantly less frequently on dual antiplatelet therapy (DAPT) (68.9vs85%, p= 0.005). After a median follow-up time of 11.1 months, major cardio/cerebrovascular event-free survival [MACCE, including cardiovascular death, MI, TIA and stroke, target-vessel revascularization (TVR) and major arterial ischemic events] was significantly shorter (9.0vs11.2 months, p= 0.02; HR 3.2, 2.4-8.4) in PAD patients and net adverse cardiovascular events (NACE = MACCE plus major hemorrhages) were significantly more frequent (19.1%vs10.5%, p = 0.049). CONCLUSIONS: PAD identifies a subgroup of ACS patients at significantly increased cardiovascular risk, but these patients tend to be undertreated. Patients admitted for ACS should be screened for PAD and optimal medical therapy at discharge should be implemented.


Asunto(s)
Síndrome Coronario Agudo , Intervención Coronaria Percutánea , Enfermedad Arterial Periférica , Síndrome Coronario Agudo/diagnóstico , Síndrome Coronario Agudo/tratamiento farmacológico , Síndrome Coronario Agudo/epidemiología , Humanos , Enfermedad Arterial Periférica/diagnóstico , Enfermedad Arterial Periférica/tratamiento farmacológico , Enfermedad Arterial Periférica/epidemiología , Inhibidores de Agregación Plaquetaria , Sistema de Registros , Factores de Riesgo , Resultado del Tratamiento
12.
Am J Infect Control ; 48(5): 573-574, 2020 05.
Artículo en Inglés | MEDLINE | ID: mdl-31902527

RESUMEN

A novel patient empowerment strategy called Patient Motivational Dialogue purposed to improve hand hygiene compliance is described. Two barriers to sustainability of patients asking health care providers (HCP) to clean their hands were noted in this study: (1) the HCP responding negatively to the patient asking, and (2) the patient misunderstanding that wearing gloves does not replace hand hygiene. Both barriers may be addressed through education of HCP and of consumer.


Asunto(s)
Atención Ambulatoria/psicología , Infección Hospitalaria/prevención & control , Higiene de las Manos , Control de Infecciones/métodos , Participación del Paciente/psicología , Adulto , Estudios de Factibilidad , Femenino , Adhesión a Directriz , Conocimientos, Actitudes y Práctica en Salud , Personal de Salud/psicología , Humanos , Masculino , Persona de Mediana Edad , Motivación , Relaciones Profesional-Paciente
13.
Crit Care Nurs Q ; 32(3): 242-50; quiz 251-2, 2009.
Artículo en Inglés | MEDLINE | ID: mdl-19542975

RESUMEN

Healthy infection prevention practices (HIPP) include hand hygiene, respiratory etiquette, environmental cleanliness, and use of personal protective equipment. These healthy practices are most used to protect individuals against exposure to bacterial and viral infections in the workplace, as well as in the home. Most often these infection prevention behaviors in critical care units are promoted to protect the patient from healthcare-associated infections. Yet, these practices are just as important to the health of the critical care nurse. Self-health in the workplace is essential to creating a healthy workplace environment, which is the goal of many intensive care units today. The benefits of creating a healthy work environment are improvement of patient/nurse satisfaction and nurse retention. HIPP reduce the risk of the critical care nurse's exposure to microbial pathogens such as methicillin-resistant Staphylococcus aureus and influenza. Pathogens that cause infections may contaminate the hands, the clothing, equipment, and blood, putting the nurse at risk for unhealthy hands, unhealthy flora, and unhealthy blood. The intensive care nurse is encouraged to embrace HIPP to nurture self, as well as protect the patient.


Asunto(s)
Cuidados Críticos/organización & administración , Adhesión a Directriz , Promoción de la Salud/organización & administración , Control de Infecciones/organización & administración , Personal de Enfermería/psicología , Salud Laboral , Conductas Relacionadas con la Salud , Humanos , Rol de la Enfermera
14.
AORN J ; 86(3): 361-8; quiz 369-72, 2007 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-17822641

RESUMEN

Guidelines for managing multidrug-resistant organisms (MDROs) in health care settings were published by the Healthcare Infection Control Practices Advisory Committee (HICPAC) in October 2006. These guidelines outline appropriate strategies to help prevent MDRO cross transmission. Perioperative nurses should be prepared to implement these strategies in an effort to protect their surgical patients from contracting MDRO infections. The HICPAC recommends elevating contact precautions to "intensified interventions" in facilities with endemic outbreaks of MDROs. Perioperative nurses should participate in these efforts by adhering to infection control practices, championing these practices with other health care personnel, and providing clinical support and leadership.


Asunto(s)
Infecciones Bacterianas/prevención & control , Infección Hospitalaria/prevención & control , Farmacorresistencia Bacteriana Múltiple , Instituciones de Salud , Enfermería Perioperatoria/normas , Infecciones Bacterianas/microbiología , Infecciones Bacterianas/enfermería , Infección Hospitalaria/microbiología , Infección Hospitalaria/enfermería , Humanos , Control de Infecciones/métodos
15.
Rev Sci Instrum ; 87(2): 02B503, 2016 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-26932056

RESUMEN

The Selective Production of Exotic Species (SPES) project is an ISOL facility under construction at Istituto Nazionale di Fisica Nucleare-Laboratori Nationali di Legnaro (INFN-LNL). 1+ radioactive ions, produced and extracted from the target-ion-source system, will be charge bred to high charge states by an ECR charge breeder (SPES-CB): the project will adopt an upgraded version of the PHOENIX charge breeder, developed since about twenty years by the Laboratoire de Physique Subatomique et de Cosmologie (LPSC). The collaboration between LNL and LPSC started in 2010 with charge breeding experiments performed on the LPSC test bench and led, in June 2014, to the signature of a Research Collaboration Agreement for the delivery of a complete charge breeder and ancillaries, satisfying the SPES requirements. Important technological aspects were tackled during the construction phase, as, for example, beam purity issues, electrodes alignment, and vacuum sealing. This phase was completed in spring 2015, after which the qualification tests were carried out at LPSC on the 1+/q+ test stand. This paper describes the characteristics of the SPES-CB, with particular emphasis on the results obtained during the qualification tests: charge breeding of Ar, Xe, Rb, and Cs satisfied the SPES requirements for different intensities of the injected 1+ beam, showing very good performances, some of which are "best ever" for this device.

16.
Rev Sci Instrum ; 87(2): 02B505, 2016 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-26932058

RESUMEN

The optimization of the efficiency of an ECR-based charge breeder is a twofold task: efforts must be paid to maximize the capture of the injected 1+ ions by the confined plasma and to produce high charge states to allow post-acceleration at high energies. Both tasks must be faced by studying in detail the electrons heating dynamics, influenced by the microwave-to-plasma coupling mechanism. Numerical simulations are a powerful tools for obtaining quantitative information about the wave-to-plasma interaction process: this paper presents a numerical study of the microwaves propagation and absorption inside the plasma chamber of the PHOENIX charge breeder, which the selective production of exotic species project, under construction at Legnaro National Laboratories, will adopt as charge breeder. Calculations were carried out with a commercial 3D FEM solver: first, all the resonant frequencies were determined by considering a simplified plasma chamber; then, the realistic geometry was taken into account, including a cold plasma model of increasing complexity. The results gave important information about the power absorption and losses and will allow the improvement of the plasma model to be used in a refined step of calculation reproducing the breeding process itself.

17.
Rev Sci Instrum ; 87(8): 083303, 2016 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-27587109

RESUMEN

The versatile ion source is an off-resonance microwave discharge ion source which produces a slightly overdense plasma at 2.45 GHz of pumping wave frequency extracting more than 60 mA proton beams and 50 mA He(+) beams. DAEδALUS and IsoDAR experiments require high intensities for H2 (+) beams to be accelerated by high power cyclotrons for neutrinos generation. In order to fulfill the new requirements, a new plasma chamber and injection system has been designed and manufactured for increasing the H2 (+) beam intensity. In this paper the studies for the increasing of the H2 (+)/p ratio and for the design of the new plasma chamber and injection system will be shown and discussed together with the experimental tests carried out at Istituto Nazionale di Fisica Nucleare-Laboratori Nazionali del Sud (INFN-LNS) and at Best Cyclotron Systems test-bench in Vancouver, Canada.

18.
Rev Sci Instrum ; 87(2): 02B510, 2016 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-26932063

RESUMEN

The present paper summarizes the results obtained from the past few years in the framework of the Enhanced Multi-Ionization of short-Lived Isotopes for Eurisol (EMILIE) project. The EMILIE project aims at improving the charge breeding techniques with both Electron Cyclotron Resonance Ion Sources (ECRIS) and Electron Beam Ion Sources (EBISs) for European Radioactive Ion Beam (RIB) facilities. Within EMILIE, an original technique for debunching the beam from EBIS charge breeders is being developed, for making an optimal use of the capabilities of CW post-accelerators of the future facilities. Such a debunching technique should eventually resolve duty cycle and time structure issues which presently complicate the data-acquisition of experiments. The results of the first tests of this technique are reported here. In comparison with charge breeding with an EBIS, the ECRIS technique had lower performance in efficiency and attainable charge state for metallic ion beams and also suffered from issues related to beam contamination. In recent years, improvements have been made which significantly reduce the differences between the two techniques, making ECRIS charge breeding more attractive especially for CW machines producing intense beams. Upgraded versions of the Phoenix charge breeder, originally developed by LPSC, will be used at SPES and GANIL/SPIRAL. These two charge breeders have benefited from studies undertaken within EMILIE, which are also briefly summarized here.

19.
J Am Coll Cardiol ; 32(3): 613-9, 1998 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-9741501

RESUMEN

OBJECTIVES: The aim of this study was to examine the prevalence of psychological distress and of its major determinants in acute coronary patients and in a control group. BACKGROUND: The prevalence and major determinants of psychological distress in acute coronary patients are not clear. METHODS: One hundred and thirty cardiac patients (110 men, age 56+/-9; 85 with acute myocardial infarction and 45 with unstable angina) and 102 controls hospitalized for acute trauma (70 men, age 55+/-9 years) were studied and the level of psychological distress estimated by a Modified Maastricht Questionnaire, self-ratings and ratings by a close relative. Major determinants of psychological distress were assessed by the Life Events Assessment, the Social Support Questionnaire and the Ways of Coping Checklist. RESULTS: The average level of psychological distress was significantly higher (p < 0.001) in coronary patients than in controls in all tests (self-evaluation=7.1+/-2.3 vs 4.3+/-2.4; relative-evaluation = 7.4+/-2.4 vs 4.2+/- 2.5; Modified Maastricht Questionnaire=91+/-32 vs 59+/-30). Cardiac patients reported significantly higher (p < 0.05) levels of social isolation (28.9+/-11.1 vs 23.4+/-8.8), self-blame (7.2+/-1.9 vs 5.8+/- 1.6) and avoidance (21.1+/-3.5 vs 18.9+/-3) and more painful life events (3.9+/-3.8 vs 2.6+/-2.2), than controls. However, not all patients had evidence of distress; indeed, cluster analysis identified a subgroup that comprised 75% of controls and 25% of cardiac patients with no determinants eliciting distress, while the other four subgroups, with one or more determinants of distress, comprised about 75% of patients and only 25% of controls. CONCLUSIONS: These results show that a high level of psychological distress is detectable in about 75% of patients with acute myocardial infarction or unstable angina and is related to one or more major determinants.


Asunto(s)
Adaptación Psicológica , Angina Inestable/psicología , Infarto del Miocardio/psicología , Rol del Enfermo , Estrés Psicológico/complicaciones , Adulto , Anciano , Mecanismos de Defensa , Femenino , Humanos , Masculino , Persona de Mediana Edad , Inventario de Personalidad , Factores de Riesgo
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