42 research outputs found
Phantom Limb Pain: Low Frequency Repetitive Transcranial Magnetic Stimulation in Unaffected Hemisphere
Phantom limb pain is very common after limb amputation and is often difficult to treat. The motor cortex stimulation is a valid treatment for deafferentation pain that does not respond to conventional pain treatment, with relief for 50% to 70% of patients. This treatment is invasive as it uses implanted epidural electrodes. Cortical stimulation can be performed noninvasively by repetitive transcranial magnetic stimulation (rTMS). The stimulation of the hemisphere that isn't involved in phantom limb (unaffected hemisphere), remains unexplored. We report a case of phantom limb pain treated with 1 Hz rTMS stimulation over motor cortex in unaffected hemisphere. This stimulation produces a relevant clinical improvement of phantom limb pain; however, further studies are necessary to determine the efficacy of the method and the stimulation parameters
The Ionosphere Prediction Service for GNSS Users
Space weather events related to solar activity can affect
both ground and space-based infrastructures, potentially
resulting in failures or service disruptions across the globe
and causing damage to equipment and systems. Global
Navigation Satellite Systems (GNSS) represent one of such
infrastructures that can suffer from electromagnetic
phenomena in the atmosphere, in particular due to the
interaction of the RF signals with the ionosphere.
The Ionosphere Prediction Service (IPS) is a project funded
by European Commission to provide a prototype platform
for a monitoring and prediction service of potential
ionosphere-related disturbances affecting GNSS user
communities. It is designed to help these communities cope
with the effects of the ionospheric activity and mitigate the
impacts of these effects on the specific GNSS-based
application/service.
The IPS development has been conceived of two
concurrent activities: the design and implementation of the
prototype service and the research activity, which
represents the scientific backbone of IPS and is at the base
of all the models and algorithms used for the computation
of the products.
The products are the basic IPS output that translate the
nowcasting or forecasting information from the whole IPS
system down to the final user. They are fine-tuned to match
the different needs of the communities (scientific, aviation,
high accuracy, etc.) which the service is targeted to and to
warn the GNSS users about possible performance
degradations in the presence of anomalous solar and
atmospheric phenomena. To achieve this overarching aim,
four different blocks of products dealing with solar
activity, ionospheric activity, GNSS receiver and system
performance figures have been developed and integrated
into a unique service chain.
The service is available to a set of invited users since July
2018 through a web portal and its provision with all the
necessary operations will last 6 months. The prototype will
be also ported to the Joint Research Centre (JRC). This
phase will be useful to further test the platform, and to
assess whether and how a dedicated prediction service for
International Technical Symposium on Navigation and Timing (ITSNT) 2018
13-16 Nov 2018
ENAC, Toulouse, France
Galileo users is to be implemented as part of the service
facilities of the Galileo infrastructure.Published2A. Fisica dell'alta atmosfera7SR AMBIENTE – Servizi e ricerca per la societàN/A or not JC
The ionosphere prediction service prototype for GNSS users
The effect of the Earth’s ionosphere represents the single largest contribution to the Global
Navigation Satellite System (GNSS) error budget and abnormal ionospheric conditions can impose serious
degradation on GNSS system functionality, including integrity, accuracy and availability. With the growing
reliance on GNSS for many modern life applications, actionable ionospheric forecasts can contribute to
the understanding and mitigation of the impact of the ionosphere on our technology based society. In this
context, the Ionosphere Prediction Service (IPS) project was set up to design and develop a prototype
platform to translate the forecast of the ionospheric effects into a service customized for specific GNSS
user communities. To achieve this overarching aim, four different product groups dealing with solar activity,
ionospheric activity, GNSS receiver performance and service performance have been developed and
integrated into a service chain, which is made available through a web based platform. This paper provides
an overview of the IPS project describing its overall architecture, products and web based platform.PublishedA412A. Fisica dell'alta atmosferaJCR Journa
The Ionosphere Prediction Service
The aim of the Ionosphere Prediction Service (IPS) project is to design and develop a prototype platform to translate the prediction and forecast of the ionosphere effects into a service customized for specific GNSS user communities. The project team is composed by Telespazio (coordinator), Nottingham Scientific Ltd, Telespazio Vega Deutschland, the University of Nottingham, the University of Rome “Tor Vergata” and the Italian Istituto Nazionale di Geofisica e Vulcanologia (INGV). The IPS development is conceived of two concurrent activities: prototype service design and development & research activity that will run along the whole project. Service design and development is conceived into four phases: user requirements collection, architecture specification, implementation and validation of the prototype. A sub-activity analyses also the integration feasibility in the Galileo Service center, located in Madrid. The research activity is the scientific backbone of IPS that will provide the models and algorithms for the forecasting products.PublishedUniversity of Exeter
United Kingdom2A. Fisica dell'alta atmosfera7SR AMBIENTE – Servizi e ricerca per la societ
Usefulness of CGM with iPro2 in children with T1DM and correlations between Glucose Variability and metabolic control
Objectives: Primary aim of the study was to evaluate the effect of a single iPro2 CGM on 3-months. HbA1c. Secondary aims were the feasibility of iPro2 monitoring and the evaluation of different metabolic and risk indexes.
Methods: Seventy pts with T1DM (age 13.8 ± 4.6 years, T1DM duration 7.4 ± 3.6 years, HbA1c 8.4% ± 1.3) treated with three different insulin regimens (three inj of premix ins. n = 6, MDI n = 45, CSII n = 19) wore iPro2 for 6 days. iPro2 was applied in pts with HbA1c >7% (n.59) despite optimized therapy, or with
recurrent hypoglycemia and HbA1c <7% (n.11). HbA1c was tested before and 3 months. after CGM data were used for glucose variability (GV) indexes calculation (CV, Conga, MAGE, MODD, AUC) and glycemic risk (GR) assessment (LBGI, HBGI, BGRI, J index, ADRR and BG Rate). LBGI and HBGI were also
tested for correlation with baseline (BL) parameters (HbA1c, age, BMI, pubertal stage, disease duration, therapeutic regimen).
Results: No pts reported significant side effects. Three-month HbA1c decreased to 8.0% ± 1.0 (P = 0.04). In the pts with HbA1c >7% (n.51) HbA1c decreased from 8.8% ± 1.2 to 8.3% ± 0.94 (P = 0.008), while in the pts with HbA1c <7% (n.12) was unchanged 6.5% ± 0.4 of 6.7% ± 0.4 (NS). HBGI and LBGI didn’t significantly correlate with any BL parameter both in the univariate and multivariate logistic regression analysis. GV indexes were evaluated in pts with HbA1c increasing (n = 23, from 7.6 ± 1.1 to 8.1 ± 1.2) and decreasing (n = 47, from 8.8 ± 1.3 to 7.9 ± 0.9) founding no differences. Furthermore no significant differences were found between the therapy groups in GV indexes.
Conclusions: iPro2 is feasible in pediatric patients and was helpful in improving HbA1c especially in patients with suboptimal glicemic control. No significant correlation was found between BL characteristics of pts and GR indexes (HBGI and LBGI). Since no significant difference was found considering HbA1c increasing and decreasing trend, it is confirmed the independent value of GV indexes in the assessment of metabolic control
Comparison Between Sensor-Augmented Insulin Therapy with Continuous Subcutaneous Insulin Infusion or Multiple Daily Injections in Everyday Life: 3-Day Analysis of Glucose Patterns and Sensor Accuracy in Children
BACKGROUND: Sensor-augmented continuous subcutaneous insulin infusion (CSII) therapy is superior to CSII therapy alone, but little is known on the effectiveness of sensor-augmented multiple daily injections (MDI) therapy.
METHODS: We compared during everyday life mean glucose control and several variability indexes recorded for 3 days by a real-time glucose sensor (Medtronic, Northridge, CA) in two groups of children treated with either CSII or MDI. Fifty-five consecutive subjects were examined: 17 receiving CSII and 38 receiving MDI basal-bolus therapy (age range, 7-22 years). All subjects wore the sensor for 4 days, and 3 days were used for statistical analysis. Mean glucose and SD, coefficient of variation (CV), mean amplitude of glucose excursion (MAGE), mean of daily differences (MODD), continuous overall net glycemic action (CONGA) at 2 and 4 h, blood glucose (BG) rate, area under the curve (AUC) above 180 mg/dL and below 70 mg/dL, Low BG Index (LBGI), and High BG Index (HBGI) were calculated.
RESULTS: Patients receiving CSII administered more daily boluses than patients receiving MDI (5.2\ub11.5 vs. 3.2\ub10.3, respectively; P=0.001). Mean glucose was lower in the CSII group. AUC above 180 mg/dL and HBGI were higher in the MDI group. CV, CONGA at 2\u2009h, CONGA at 2 h during the day, and HBGI were worse in the MDI group, whereas MODD, LBGI, BG rate, and MAGE were similar. A positive correlation (r=0.95; P<0.05) was found between the paired sensor-meter values. For the glucose values <70\u2009mg/dL, sensitivity was 40%, and specificity was 99%.
CONCLUSIONS: In our pediatric patients during everyday life sensor-augmented CSII therapy seemed more effective than sensor-augmented MDI therapy, in terms both of glucose mean values and of intraday variability. Mild hypoglycemic episodes and indexes of low BG values were similar in the two groups, although the latter results may be inaccurate because of low sensor sensitivity at low glucose value