Livraghi T.,Istituto Clinico Humanitas |
Meloni F.,San Gerardo Hospital |
Solbiati L.,Azienda Ospedaliera di Busto Arsizio |
Zanus G.,University of Padua
CardioVascular and Interventional Radiology | Year: 2012
Purpose New technologies for microwave ablation (MWA) have been conceived, designed to achieve larger areas of necrosis compared with radiofrequency ablation (RFA). The purpose of this study was to report complications by using this technique in patients with focal liver cancer. Methods Members of 14 Italian centers used a 2.45- GMHz generator delivering energy through a cooled miniature- choke MW antenna and a standardized protocol for follow-up. They completed a questionnaire regarding number and type of deaths, major and minor complications and side effects, and likelihood of their relationship to the procedure. Enrollment included 736 patients with 1.037 lesions: 522 had hepatocellular carcinoma with cirrhosis, 187 had metastases predominantly from colorectal cancer, and 27 had cholangiocellular carcinoma. Tumor size ranged from 0.5 to 10 cm. In 13 centers, the approach used was percutaneous, in 4 videolaparoscopic, and in 3 laparotomic. Results No deaths were reported. Major complications occurred in 22 cases (2.9%), and minor complications in 54 patients (7.3%). Complications of MWA do not differ from those RFA, both being based on the heat damage. Conclusion Results of this multicenter study confirmed those of single-center experiences, indicating that MWA is a safe procedure, with no mortality and a low rate of major complications. The low rate of complications was probably due to precautions adopted, knowing in advance possible risk conditions, on the basis of prior RFA experience. © Springer Science+Business Media, LLC and the Cardiovascular and Interventional Radiological Society of Europe (CIRSE) 2011.
Dal Canto M.,Biogenesi Reproductive Medicine Center |
Coticchio G.,Biogenesi Reproductive Medicine Center |
Mignini Renzini M.,Biogenesi Reproductive Medicine Center |
De Ponti E.,San Gerardo Hospital |
And 4 more authors.
Reproductive BioMedicine Online | Year: 2012
Cleavage kinetics of human embryos is indicative of ability to develop to blastocyst and implant. Recent advances in time-lapse microscopy have opened new and important research opportunities. In this study involving infertile couples requiring standard IVF/intracytoplasmic sperm injection treatment, zygotes were cultured by integrated embryo-culture time-lapse microscopy to analyse cleavage times from the 2- to the 8-cell stages in relation to the ability to develop to blastocyst, expand and implant. In comparison to embryos arresting after 8-cell stage, times of cleavage to 7- and 8-cell stages of embryos developing to blastocyst were shorter (56.5 ± 8.1 versus 58.8 ± 10.4 h, P = 0.03 and 61.0 ± 9.4 versus 65.2 ± 13.0 h, P = 0.0008, respectively). In embryos developing to blastocyst, absence of blastocoele expansion on day 5 was associated with progressive cleavage delay. Implanting embryos developed to 8-cell stage in a shorter period compared with those unable to implant (54.9 ± 5.2 and 58.0 ± 7.2 h, respectively, P = 0.035). In conclusion, cleavage from 2- to 8-cell stage occurs progressively earlier in embryos with the ability to develop to blastocyst, expand and implant. Conventional observation times on days 2 and 3 are inappropriate for accurate embryo evaluation. The speed at which human embryos cleave is known to be suggestive of their ability to develop in vitro to the blastocyst stage and implant after transfer into the uterus. Recent advances in time-lapse microscopy, which allows acquisition of images every 15-20 min, have opened new and important research opportunities. In a retrospective study involving infertile couples requiring standard IVF or intracytoplasmic sperm injection treatment, fertilized oocytes were cultured by an integrated embryo-culture time-lapse microscopy system in order to perform an analysis of cleavage times from the 2- to the 8-cell stage in relation to the ability to develop to blastocyst, expand and implant. In comparison to embryos arresting after the 8-cell stage, times of cleavage to the 7- and 8-cell stage of embryos that developed to blastocyst were significantly shorter (56.5 ± 8.1 h versus 58.8 ± 10.4 h and 61.0 ± 9.4 h versus 65.2 ± 13.0 h, respectively). In embryos developing to the blastocyst stage, absence of blastocoele expansion on day 5 was associated with a progressive cleavage delay. Implanting embryos developed to the 8-cell stage in a shorter period compared to those unable to implant (54.9 ± 5.2 h and 58.0 ± 7.2 h, respectively, P = 0.035). In conclusion, cleavage from the 2- to the 8-cell stage occurs progressively earlier in embryos with the ability to develop to blastocyst, expand and implant. Conventional observation times on day 2 and 3 are appropriate for accurate embryo evaluation. © 2012, Reproductive Healthcare Ltd. Published by Elsevier Ltd. All rights reserved.
Castiglioni P.,Don C. Gnocchi Foundation |
Di Rienzo M.,Don C. Gnocchi Foundation |
Radaelli A.,San Gerardo Hospital
Autonomic Neuroscience: Basic and Clinical | Year: 2013
Fractal analysis is a promising tool for assessing autonomic influences on heart rate (HR) and blood pressure (BP) variability. The temporal spectrum of scale coefficients, α( t), was recently proposed to describe the cardiovascular fractal dynamics. Aim of our work is to evaluate sympathetic influences on cardiovascular variability analyzing α( t) and spectral powers of HR and BP after ganglionic blockade. BP was recorded in 11 rats before and after autonomic blockade by hexamethonium infusion (HEX). Systolic and diastolic BP, pulse pressure and pulse interval were derived beat-by-beat. Segments longer than 5. min were selected at baseline and HEX to estimate power spectra and α( t). Comparisons were made by paired t-test. HEX reduced all spectral components of systolic and diastolic BP, the reduction being particularly significant around the frequency of Mayer waves; it induced a reduction on α( t) coefficients at t < 2. s and an increase on coefficients at t > 8. s. HEX reduced only slower components of pulse interval power spectrum, but decreased significantly faster scale coefficients (t < 8. s). HEX only marginally affected pulse pressure variability. Results indicate that the sympathetic outflow contributes to BP fractal dynamics with fractional Gaussian noise (α < 1) at longer scales and fractional Brownian motion (α > 1) at shorter scales. Ganglionic blockade also removes a fractional Brownian motion component at shorter scales from HR dynamics. Results may be explained by the characteristic time constants between sympathetic efferent activity and cardiovascular effectors. Therefore fractal analysis may complete spectral analysis with information on the correlation structure of the data. © 2013 Elsevier B.V.
Bartoli F.,University of Milan Bicocca |
Carra G.,University College London |
Crocamo C.,San Gerardo Hospital |
Carretta D.,University of Milan Bicocca |
Clerici M.,University of Milan Bicocca
Metabolic Syndrome and Related Disorders | Year: 2013
Background: Previous reports showed a high prevalence of obesity, diabetes, hypertension, and dyslipidemia among people suffering from posttraumatic stress disorder (PTSD). However, there is a lack of reviews that systematically analyze the relationship between PTSD and metabolic syndrome. We conducted a systematic review and meta-analysis aimed at estimating the association between PTSD and metabolic syndrome. Methods: We systematically searched PubMed, Embase, and Web of Science. We included observational studies assessing the prevalence of metabolic syndrome in a sample with PTSD and in a comparison group without PTSD. Data were analyzed using Review manager 5.1. Odds ratios (OR) with 95% confidence intervals were used as an association measure for pooled analysis, based on a random-effects model. Results: Six articles were eligible according to the inclusion criteria, for an overall number of 528 individuals suffering from PTSD and 846 controls without PTSD. The pooled OR for metabolic syndrome for people with PTSD was 1.37 (1.03-1.82). Statistical heterogeneity between the included studies was low (I2=22%). Conclusions: Despite some limitations, the findings of this systematic review and meta-analysis confirmed our hypothesis that individuals suffering from PTSD have a greater risk of metabolic syndrome. The potential role of unknown factors or mediators that might clarify the nature of this association needs further research. © Mary Ann Liebert, Inc.
Mauri T.,University of Milan Bicocca |
Eronia N.,University of Milan Bicocca |
Abbruzzese C.,San Gerardo Hospital |
Marcolin R.,San Gerardo Hospital |
And 5 more authors.
Critical Care Medicine | Year: 2015
In acute respiratory failure patients undergoing pressure support ventilation, a short cyclic recruitment maneuver (Sigh) might induce reaeration of collapsed lung regions, possibly decreasing regional lung strain and improving the homogeneity of ventilation distribution. We aimed to describe the regional effects of different Sigh rates on reaeration, strain, and ventilation heterogeneity, as measured by thoracic electrical impedance tomography. Design: Prospective, randomized, cross-over study. Setting: General ICU of a single university-affiliated hospital. Patients: We enrolled 20 critically ill patients intubated and mechanically ventilated with Pao2/Fio2 up to 300 mm Hg and positive end-expiratory pressure at least 5 cm H2O (15 with acute respiratory distress syndrome), undergoing pressure support ventilation as per clinical decision. Interventions: Sigh was added to pressure support ventilation as a 35 cm H2O continuous positive airway pressure period lasting 3-4 seconds at different rates (no-Sigh vs 0.5, 1, and 2 Sigh(s)/min). All study phases were randomly performed and lasted 20 minutes. Measurements and Main Results: In the last minutes of each phase, we measured arterial blood gases, changes in end-expiratory lung volume of nondependent and dependent regions, tidal volume reaching nondependent and dependent lung (Vtnondep and Vtdep), dynamic intratidal ventilation heterogeneity, defined as the average ratio of Vt reaching nondependent/Vt reaching dependent lung regions along inspiration (VtHit). With Sigh, oxygenation improved (p < 0.001 vs no-Sigh), end-expiratory lung volume of nondependent and dependent regions increased (p < 0.01 vs no-Sigh), Vtnondep showed a trend to reduction, and Vtdep significantly decreased (p = 0.11 and p < 0.01 vs no-Sigh, respectively). VtHit decreased only when Sigh was delivered at 0.5/min (p < 0.05 vs no-Sigh), while it did not vary during the other two phases. Conclusions: Sigh decreases regional lung strain and intratidal ventilation heterogeneity. Our study generates the hypothesis that in ventilated acute respiratory failure patients, Sigh may enhance regional lung protection. © 2015 by the Society of Critical Care Medicine and Wolters Kluwer Health, Inc.