1,721,172 research outputs found
Intestinal motility: Normal Motility and Development of the Intestinal Neuroenteric System.
No full textMotor unit firing rates and synchronisation affect the fractal dimension of simulated surface electromyogram during isometric/isotonic contraction of vastus lateralis muscle
Full text linkDuring fatiguing contractions, many adjustments in motor units behaviour occur: decrease in muscle fibre conduction velocity; increase in motor units synchronisation; modulation of motor units firing rate; increase in variability of motor units inter-spike interval. We simulated the influence of all these adjustments on synthetic EMG signals in isometric/isotonic conditions. The fractal dimension of the EMG signal was found mainly influenced by motor units firing behaviour, being affected by both firing rate and synchronisation level, and least affected by muscle fibre conduction velocity. None of the calculated EMG indices was able to discriminate between firing rate and motor units synchronisation
Gestione della maxiemergenza terremoto del 6 aprile 2009 in abruzzo. l'esempio dell'ospedale di Avezzano
No full textIl terremoto rappresenta l’evento più temuto da chi pianifica la
gestione delle maxi emergenze sanitarie in quanto, oltre a coinvolgere un
gran numero di vittime interessate da traumi di qualsiasi tipo, può danneggiare
anche le strutture ospedaliere presenti nell’area devastata e richiedere,
quindi, il trasferimento dei pazienti in altri ospedali, che a loro volta devono
essere pronti ad accogliere un gran numero di soggetti con necessità
assistenziali notevolmente variegata. È quanto si è verificato per il terremoto
che ha interessato la città dell’Aquila alle ore 3:32 del 6 aprile 2009, dove,
oltre a garantire l’assistenza alle vittime si è dovuto garantire l’incolumità
ed il trasferimento dei pazienti dall’ospedale universitario San Salvatore.
Fra gli ospedali coinvolti a supporto della maxi emergenza si è valutato
l’operato del personale del SS. Filippo e Nicola di Avezzano per evidenziare
le principali criticità e good practices
The criteria of choice in the palliative therapy of cancer of the pancreas
No full textExplorative laparotomy and palliative surgery keep on having the leadership, in the treatment of exocrine tumours of the pancreas, in spite of important diagnostic and surgery progress. The authors have looked at international literature and their own experience, to simplify the choice of better treatment for each patient. They compared the reliability of various diagnostic technologies and different surgery options. Metastasis and lymphatic invasion are limiting factors for surgery; the first lymphatic stage and duodenum fixation still consent curative surgery. Biliary decompression through external catheter or transpapillary endoscopic prosthesis has a primary role in the diagnostic therapeutic decision. The authors preferred to reserve gastro-jejunostomy to patients with duodenum obstruction. They choose an anterior trans-mesocolic gastro-jejunostomy with Roux-en-y reconstruction, with an upper bilio-enteroanastomosis. Pain relief is one of the most important goal in pancreas' cancer: anaesthetic and surgery techniques lead to good and long-standing results. Explorative laparotomy is often the only technique that leads to the final decision about a therapeutic plan, because it shows size, location and characteristic of the tumour and his metastasis in lymphatic and anatomic structures. The integration of metasurgery therapy (chemo-, radio-, hormono ...) allows, together with pain treatment, to improve the results above all the quality of life in carcinoma of the pancreas
Performance progression of elite jumpers: Early performances do not predict later success
No full textThis study aimed (a) to estimate the transition rate for top 50 ranked track and field jumpers, (b) to compare the performance progression of top 50 ranked senior jumpers (top50 senior) to those who failed to be top 50 ranked in the senior category despite being top 50 ranked in the under 18 category (only U18), and (c) to verify whether relative age effect may at least partially explain the differences in the two above-mentioned subgroups. The career performance trajectories of 5981 athletes (2837 females) competing in jump events from 2000 to 2019 were extracted from the World Athletics database. The all-time top 50 ranked athletes for each age from 16 years to senior category were identified. Performance progression characteristics were compared using linear mixed-effects model. Only 8% of males and 16% of females top 50 ranked at the age of 16 years managed to be included among the top50 senior. Only U18subgroup made the first appearance in the database (at 15-16 years) and reached the peak performance (at 20 years) earlier than top50 senior (17-18 and 26-27 years, respectively). The relative age effect was largely present in Only U18 but not in top50 senior subgroups. Most of the early-successful U18 world-class jumpers did not manage to maintain the same level of competitiveness in adulthood since they experienced a plateau in performance from 20 years of age. Conversely, top 50 ranked senior jumpers continued to produce consistent performance improvement up to 26-27 years of age
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