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D'Ercole L.,Fondazione IRCCS San Matteo Hospital | Thyrion F.Z.,Fondazione IRCCS San Matteo Hospital | Bocchiola M.,Fondazione IRCCS San Matteo Hospital | Mantovani L.,Fondazione IRCCS San Matteo Hospital | Klersy C.,Service of Biometry and Clinical Epidemiology
Physica Medica | Year: 2012

The aim of this study was to propose local diagnostic reference levels (DRL) for exposure to radiation during diagnostic procedures and neuroradiological interventions such as cerebral angiography and embolisation of cerebral aneurysms (intra-cranial aneurysms and arteriovenous malformations). Hospitals should adopt the national DRLs for use locally or establish their own DRLs based on local practice, if sufficient local data are available. For this purpose we studied a sample of 113 cerebral angiography procedures and 82 embolisations of cerebral aneurysms. The data recorded included the kerma-area product (KAP), the fluoroscopy time and the number of frames for each procedure: third quartiles from the total dosimetric databank were calculated and proposed as provisional local DRL. Since the complexity of a procedure must be taken into account when evaluating the radiation dose, in the case of embolisation of aneurysms (intra-cranial), in this initial phase we assessed whether the complexity of the embolisation procedure is related to the size of the aneurysm and/or its site. We, therefore, re-calculated the DRL for only intra-cranial aneurysms, leaving aside the arteriovenous malformations. Considering that the DRL calculated for all the therapeutic procedures are similar to those calculated considering only intra-cranial aneurysms, at the moment we propose, besides the DRL for cerebral angiography, a single DRL for all interventional procedures, even when the clinical pictures are very different. Local preliminary DRLs were proposed as follows: 180 Gy cm2, 12 min and 317 frames for cerebral angiography and 487 Gy cm2, 46 min and 717 frames for interventional procedures (intra-cranial aneurysms and arteriovenous malformations). © 2010 Associazione Italiana di Fisica Medica. Source


Rondanelli M.,University of Sfax | Rondanelli M.,University of Pavia | Opizzi A.,University of Sfax | Opizzi A.,University of Pavia | And 5 more authors.
Journal of the American Geriatrics Society | Year: 2011

OBJECTIVES: To determine whether nightly administration of melatonin, magnesium, and zinc improves primary insomnia in long-term care facility residents. DESIGN: Double-blind, placebo-controlled clinical trial. SETTING: One long-term care facility in Pavia, Italy. PARTICIPANTS: Forty-three participants with primary insomnia (22 in the supplemented group, 21 in the placebo group) aged 78.3±3.9. INTERVENTION: Participants took a food supplement (5 mg melatonin, 225 mg magnesium, and 11.25 mg zinc, mixed with 100 g of pear pulp) or placebo (100 g pear pulp) every day for 8 weeks, 1 hour before bedtime. MEASUREMENTS: The primary goal was to evaluate sleep quality using the Pittsburgh Sleep Quality Index. The Epworth Sleepiness Scale, the Leeds Sleep Evaluation Questionnaire (LSEQ), the Short Insomnia Questionnaire (SDQ), and a validated quality-of-life instrument (Medical Outcomes Study 36-item Short Form Survey (SF-36)) were administered as secondary end points. Total sleep time was evaluated using a wearable armband-shaped sensor. All measures were performed at baseline and after 60 days. RESULTS: The food supplement resulted in considerably better overall PSQI scores than placebo (difference between groups in change from baseline PSQI score=6.8; 95% confidence interval=5.4-8.3, P<.001). Moreover, the significant improvements in all four domains of the LSEQ (ease of getting to sleep, P<.001; quality of sleep, P<.001; hangover on awakening from sleep, P=.005; alertness and behavioral integrity the following morning, P=.001), in SDQ score (P<.001), in total sleep time (P<.001), and in SF-36 physical score (P=.006) suggest that treatment had a beneficial effect on the restorative value of sleep. CONCLUSION: The administration of nightly melatonin, magnesium, and zinc appears to improve the quality of sleep and the quality of life in long-term care facility residents with primary insomnia. © 2011, The American Geriatrics Society. Source


Boriani G.,University of Bologna | Auricchio A.,Fondazione Cardiocentro Ticino | Klersy C.,Service of Biometry and Clinical Epidemiology | Kirchhof P.,University of Munster | And 3 more authors.
Europace | Year: 2011

Aims: A pilot European survey was conducted to assess the cumulative time spent by healthcare personnel for in-office follow-up of cardiac implantable electrical devices (CIEDs), including cardiac pacemakers, implantable cardioverter-defibrillators, and cardiac resynchronization therapy (CRT) devices. Methods and results: Resource use data were collected during a session of in-clinic follow-up. Among 407 visits, 93 were scheduled and 7 unscheduled. Visit duration (total cumulative time) lasted a mean of 27 min for scheduled visits, and was ∼30 longer for unscheduled visits. Independent determinants of visit duration were: unscheduled visit (7.6 min, P 0.01), the need for device reprogramming (7.5 min, P < 0.001), and the type of device checked, with CRT devices needing 9.1 and 6.6 more minutes than single- (P < 0.001) and dual-chamber devices (P 0.002), respectively. Most visits involved two different types of healthcare personnel (239 of 407, 59), simultaneously. The most frequent combination was the involvement of both a cardiologist and a nurse (216 of 407 visits with both of them only, and 65 additional visits with also an internal technician, an external technician, or both). Overall, an external technician was involved in 18 of visits. Conclusions: In 'real-world' practice, the follow-up of CIEDs nowadays requires important resources in terms of time dedicated by specialized personnel, corresponding to cardiologists, nurses, internal technicians, and external, industry-employed technicians. These observations should be the basis for addressing clinical, organizational, financial, and policy initiatives targeted to optimize follow-up procedures in order to face the increase in the number of patients treated with CIEDs expected for the next years. © 2011 The Author. Source


D'Armini A.M.,University of Pavia | Morsolini M.,University of Pavia | Mattiucci G.,University of Pavia | Grazioli V.,University of Pavia | And 5 more authors.
Journal of Thoracic and Cardiovascular Surgery | Year: 2014

Objectives Chronic thromboembolic pulmonary hypertension can be cured by pulmonary endarterectomy. Operability assessment remains a major concern, because there are no well-defined criteria to discriminate proximal from distal obstructions, and surgical candidacy depends mostly on the surgeon's experience. The intraoperative classification of chronic thromboembolic pulmonary hypertension describes 4 types of lesions, based on anatomy and location. We describe our recent experience with the more distal (type 3) disease. Methods More than 500 pulmonary endarterectomies were performed at Foundation I.R.C.C.S. Policlinico San Matteo (Pavia, Italy). Because of recent changes in the patient population, 331 endarterectomies performed from January 2008 to December 2013 were analyzed. Two groups of patients were identified according to the intraoperative classification: proximal (type 1 and type 2 lesions, 221 patients) and distal (type 3 lesions, 110 patients). Results The number of endarterectomies for distal chronic thromboembolic pulmonary hypertension increased significantly over time (currently ∼37%). Deep venous thrombosis was confirmed as a risk factor for proximal disease, whereas patients with distal obstruction had a higher prevalence of indwelling intravascular devices. Overall hospital mortality was 6.9%, with no difference in the 2 groups. Postoperative survival was excellent. In all patients, surgery was followed by a significant and sustained improvement in hemodynamic, echocardiographic, and functional parameters, with no difference between proximal and distal cases. Conclusions Although distal chronic thromboembolic pulmonary hypertension represents the most challenging situation, the postoperative outcomes of both proximal and distal cases are excellent. The diagnosis of inoperable chronic thromboembolic pulmonary hypertension should be achieved only in experienced centers, because many patients who have been deemed inoperable might benefit from favorable surgical outcomes. © 2014 by The American Association for Thoracic Surgery. Source


Rondanelli M.,University of Pavia | Opizzi A.,University of Pavia | Monteferrario F.,University of Pavia | Klersy C.,Service of Biometry and Clinical Epidemiology | And 2 more authors.
European Journal of Clinical Nutrition | Year: 2011

Background/ Objectives:There has been growing interest in using dietary intervention to improve the lipid profile. This work aims at analyzing the effects and the comparison of the enrichment of a diet with beta-glucans or rice bran in mildly hypercholesterolemic men.Subjects/Methods:The subjects initially consumed a 3-week Step 1 American Heart Association diet with rice bran-enriched foods. After this adaptation period, volunteers were randomly assigned to follow a crossover, controlled trial that consisted of two treatment with beta-glucan- or rice bran-enriched foods, each of 4 weeks, with a 3-week wash-out, like the adaptation period, between periods. Fasted blood samples were collected on days 0, 21, 49, 70 and 98 in both study arms for measuring low-density lipoprotein (LDL)-cholesterol (primary outcome), total cholesterol, high-density lipoprotein (HDL)-cholesterol, triglycerides, apolipoprotein (apo) A-I, apo B and glucose levels. Results:Twenty-four men (mean age: 50.3±5.3, mean body mass index: 24.9±1.9) completed the 14-week trial. Subjects in the 3-week adaptation period experienced significant reductions in the mean change of LDL cholesterol, total cholesterol, total cholesterol/HDL cholesterol, LDL cholesterol/HDL cholesterol, apo A-I, apo A-I/apo B and glucose. During the intervention diet periods, a difference was found between treatment groups for the mean change in LDL (0.21 (95% confidence interval (CI): 0.02-0.40), P=0.033) and total cholesterol (0.34 (95% CI: 0.20-0.47), P<0.001). Other parameters evaluated were not significantly affected by the diet consumed. Conclusions:The results of the present crossover clinical trial showed that beta-glucan-enriched foods are more effective in lowering serum LDL levels, compared with rice bran-enriched foods.European Journal of Clinical Nutrition advance online publication, 20 April 2011; doi:10.1038/ejcn.2011.48. Source

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