Search

Multirotors are gaining great importance in the layout of innovative and more agile mobility. In this framework, a possible solution to developing an aircraft complying with the stringent size requirements characterizing this type of application may be a coaxial rotor configuration. To exploit several possibilities linked to coaxial rotors, a scaled experimental model is designed to evaluate the performances of the counter-rotating propeller system, specifically regarding the distance between the two propellers. Both thrust and noise are considered as parameters of interest. Two brushless motors are deployed, whereas the propellers’ angular velocity, in terms of rounds per minute (rpm), is controlled by an external control system. Tests are conducted on both single isolated propellers as well as on the counter-rotating system: the two propellers and their respective motors are characterized regarding the thrust. Furthermore, a comparison with a numerical model is performed. Noise evaluation on the single propeller shows a motor contribution prevalence at a low rpm range (1140–1500 rpm) and a propeller prevalence for angular velocities higher than 1860 rpm. By varying the distances between the propellers, a sensitivity analysis is performed with the aim of identifying the optimum configuration, taking into account both noise and thrust performances.

In recent years, artificial neural networks (ANNs) have completely changed the field of machine learning, especially computer vision. The Spike Neural Network (SNN) is biologically more realistic than ANN. It is more hardware-friendly and energy-efficient, and suitable for running on portable devices with weak computing performance. In this paper we aim to classify several Chinese character images based on SNN. The input image is preprocessed by traditional methods (OpenCV) and then it is input into the trained spike neural network to classify the characters. Different hyperparameters configurations are tested reaching an optimal configuration and a classification accuracy rate of 93%.

In recent years, artificial neural networks (ANNs) have completely changed the field of machine learning, especially computer vision. The Spike Neural Network (SNN) is biologically more realistic than ANN. It is more hardware-friendly and energy-efficient, and suitable for running on portable devices with weak computing performance. In this paper we aim to classify several Chinese character images based on SNN. The input image is preprocessed by traditional methods (OpenCV) and then it is input into the trained spike neural network to classify the characters. Different hyperparameters configurations are tested reaching an optimal configuration and a classification accuracy rate of 93%.

Neuromorphic computing is going to be the new standard in low power AI applications. The integration between new neuromorphic hardware and traditional microcontroller is an open challenge. Here we present an interface board and a communication protocol that allows the communication between different devices using a microcontroller unit (Arduino Due) in the middle. Our compact printed circuit board (PCB) board links different devices as a whole system and provides power supply for the entire system using batteries as power source. Specifically, we have connected a Dynamic Vision Sensor (DVS128), SpiNNaker board and a servo motor, creating a platform for intercepting incoming objects. The data rate of the implemented interface board is 24.64k symbols/s and the latency for generating commands is about 11ms. The complete system is run only by batteries making it very suitable for robotic applications.

Multirotors are gaining great importance in the layout of innovative and more agile mobility. In this framework, a possible solution to developing an aircraft complying with the stringent size requirements characterizing this type of application can be a coaxial rotor configuration. To exploit the several possibilities linked to coaxial rotors, a scaled experimental model is designed to evaluate the performances of the counter-rotating propellers system, concerning the distance between the two propellers. Both thrust and noise are considered as parameters of interest. Two brushless motors are deployed whereas the propellers' angular velocity, in terms of round per minute (rpm), is controlled by an external control system. Tests are conducted on both single isolated propellers as well as on the counter-rotating system: the two propellers and their respective motors have been characterized concerning the thrust. Furthermore, a comparison with a numerical model is performed. Noise evaluation on the single propeller has shown a motor contribution prevalence at a low rpm regime (1140-1500 rpm) and a propeller prevalence for angular velocities higher than 1860 rpm. By varying the distances between the propellers a sensitivity analysis is performed with the aim of identifying the optimum configuration taking into account both noise and thrust performances.

Introduction: This exploratory retrospective analysis examined any potential prognostic role of preoperative neutrophil lymphocyte ratio (NLR) for progression-free survival (PFS) and time to endosc...

This work numerically investigates the effects of using dielectric barrier discharge(DBD) plasma actuators to control the deformation and the hydrodynamic properties of the well-known fluid–structure interaction(FSI) benchmark presented by Turek and Hron. A slip boundary condition models the plasma actuation in order to control the interaction between the fluid flow and a deformable bar. The plasma model depends on two parameters, which are the control intensity and the actuation frequency. The effectiveness of the plasma control is examined by evaluating the amplitude and frequency of the vertical displacement of the oscillating bar free tip. First, for non-oscillatory actuation, the critical value for the intensity of the plasma actuation for which the vertical displacement disappears is detected and the physical mechanisms that provoke this behavior are studied. In a second step, the plasma actuator is also modulated with a control frequency, and the combined effect of both control parameters on the oscillation amplitude and frequency of the bar is examined. Depending on the specific values of the control parameters, a lock-in condition might appear. The behavior of the system in terms of drag, amplitude and frequency of the tip oscillation for different combinations of the actuation parameters is quantified. The possibilities of observing resonant phenomena or forcing the tip frequency to match the external plasma frequency are discussed, making it possible to predict the behavior of the system under examination.

The article presents a risk level assessment for rear-end collision which depends on interactions between environment (e.g. cars, pedestrians, road etc.), ego driver and vehicle. The evaluated risk focuses on the probability of collision between ego and front vehicle. Information comes from embedded sensors which provide data about inter distance, vehicle dynamic, temperature etc. Our system has also communication capabilities, i.e. vehicle to vehicle (V2V) communication, which allow the ego car to sense his environment. Then it infers a probability of risk with a Bayesian Network. In a previous work this risk level assessment tool was developed for the worst case assumption concerning the inter distance. By adding an estimation of the braking intention of front car, the tool presented in this paper work on a less restrictive assumption. As presented this tool is an ADAS for human conducted vehicles but it can be easily adapted for autonomous car.

Background Erectile dysfunction may predict future cardiovascular events and indicate the severity of coronary artery disease in middle-aged men. The aim of this study was to evaluate whether erectile dysfunction (expression of generalized macro- and micro-vascular pathology) could predict reduced effort tolerance in patients after an acute myocardial infarction. Patients and methods One hundred and thirty-nine male patients (60 ± 12 years old), admitted to intensive cardiac rehabilitation 13 days after a complicated acute myocardial infarction, were evaluated for history of erectile dysfunction using the International Index of Erectile Function questionnaire. Their physical performance was assessed by means of two six-minute walk tests (performed two weeks apart) and by a symptom limited cardiopulmonary exercise test (CPET). Results Patients with erectile dysfunction (57% of cases) demonstrated poorer physical performance, significantly correlated to the degree of erectile dysfunction. After cardiac rehabilitation, they walked shorter distances at the final six-minute walk test (490 ± 119 vs. 564 ± 94 m; p

Il saggio propone una revisione della teoria derridiana dell'ipomnesi a partire dal contributo della più recente neurologia. Contestualmente esamina validità e limiti del paradigma informatico della memoria, contestando la sua applicabilità alla memoria umana, che non procede secondo lo schema "storage and recovery", bensì in maniera incomparabilmente più plastica e complessa, in un processo di continua riscrittura e rinarrazione anamnestica dell'ipomnesi.

Le but de ces pages est de présenter, d’une manière extrêmement synthétique et schématique, le sens et les corrélations élémentaires des concepts principaux d’une philosophie de la technique développée sur un plan généalogique et anthropologique.

The article presents a modelization and assessment of automotive risk accidents taking into account the interactions between environment, driver and vehicle. The evaluated risk is composed of two parts: one concerns the impending risk (i.e. risk of a clearly identified danger and which is present in a short time horizon) and the other one, the latent risk (i.e. risky behavior of the driver which can lead to an accident). The developed tool uses information present in the CAN bus, additional sensors and car communication for shared sensing. With the collected information and estimated variables (e.g. grip and reaction time), it infers a probability of risk with a Bayesian Network. The tool can also be used for evaluating autonomous car driving and driver decisions.

An increasing number of patients with end-stage heart failure are being treated with continuous-flow left ventricular assist devices (cf-LVADs). These patients provide new challenges to the staff in exercise-based cardiac rehabilitation (CR) programs. Even though experience remains limited, it seems that patients supported by cf-LVADs may safely engage in typical rehabilitative activities, provided that some attention is paid to specific aspects, such as the presence of a short external drive line. In spite of initial physical deconditioning, CR allows progressive improvement of symptoms such as fatigue and dyspnea. Intensity of rehabilitative activities should ideally be based on measured aerobic capacity and increased appropriately over time. Regular, long-term exercise training results in improved physical fitness and survival rates. Appropriate adjustment of cf-LVAD settings, together with maintenance of adequate blood volume, provides maximal output, while avoiding suction effects. Ventricular arrhythmias, although not necessarily constituting an immediate life-threatening situation, deserve treatment as they could lead to an increased rate of hospitalization and poorer quality of life. Atrial fibrillation may worsen symptoms of right ventricular failure and reduce exercise tolerance. Blood pressure measurements are possible in cf-LVAD patients only using a Doppler technique, and a mean blood pressure ≤80 mmHg is considered "ideal." Some patients may present with orthostatic intolerance, related to autonomic dysfunction. While exercise training constitutes the basic rehabilitative tool, a comprehensive intervention that includes psychological and social support could better meet the complex needs of patients in which cf-LVAD may offer prolonged survival.

Introduction: Complete denervation of transplanted heart exerts protective effect against postoperative atrial fibrillation; various degrees of autonomic denervation appear also after transection of ascending aorta during surgery for aortic aneurysm. Objective: This study aimed to evaluate if the level of cardiac denervation obtained by resection of ascending aorta could exert any effect on postoperative atrial fibrillation incidence. Methods: We retrospectively analysed the clinical records of 67 patients submitted to graft replacement of ascending aorta (group A) and 132 with aortic valve replacement (group B); all episodes of postoperative atrial fibrillation occurred during the 1-month follow-up have been reported. Heart Rate Variability parameters were obtained from a 24-h Holter recording; clinical, echocardiographic and treatment data were also evaluated. Results: Overall, 45% of patients (group A 43%, group B 46%) presented at least one episode of postoperative atrial fibrillation. Older age (but not gender, abnormal glucose tolerance, ejection fraction, left atrial diameter) was correlated with incidence of postoperative atrial fibrillation. Only among a subgroup of patients with aortic transection and signs of greater autonomic derangement (heart rate variability parameters below the median and mean heart rate over the 75th percentile), possibly indicating more profound autonomic denervation, a lower incidence of postoperative atrial fibrillation was observed (22% vs. 54%). Conclusion: Transection of ascending aorta for repair of an aortic aneurysm did not confer any significant protective effect from postoperative atrial fibrillation in comparison to patients with intact ascending aorta. It could be speculated that a limited and heterogeneous cardiac denervation was produced by the intervention, creating an eletrophysiological substrate for the high incidence of postoperative atrial fibrillation observed.

This clinical skills review describes the most common cardiac auscultatory findings in adults after heart surgery and correlates them with prognostic indicators. It was written for noncardiologist health care providers who work in outpatient cardiac rehabilitation programs.Mechanical prosthetic valves produce typical closing and opening clicks. Listening to their timing and features, as well as to presence and quality of murmurs, contributes to the awareness of potential prosthesis malfunction before other dramatic clinical signs or symptoms become evident. In patients with biological prostheses, murmurs should be carefully evaluated to rule out both valve malfunction and degeneration. Rubs of post-pericardiotomy pericarditis should prompt further investigation for early signs of cardiac tamponade. Third and fourth heart sounds and systolic murmurs in anemic patients should be differentiated from pathological conditions. Relatively new groups of heart surgery patients are those with chronic heart failure treated with continuous-flow left ventricle assist devices. These devices produce characteristic continuous noise that may suddenly disappear or vary in quality and intensity with device malfunction. After heart transplantation, a carefully performed and regularly repeated cardiac auscultation may contribute to suspicion of impending acute rejection. During cardiac rehabilitation, periodic cardiac auscultation may provide useful information regarding clinical-hemodynamic status and allow detection of heralding signs of possible complications in an efficient and low-cost manner.

Axial-flow left ventricular assist devices (LVADs) are increasingly used as destination therapy in end-stage chronic heart failure (CHF), as they improve survival and quality of life. Their effect on exercise tolerance in the early phase after implantation is still unclear. The aim of this study was to evaluate the effect of LVADs on the exercise capacity of a group of CHF patients within 2 months after initiation of circulatory support. Cardiopulmonary exercise test data were collected for 26 consecutive LVAD-implanted CHF patients within 2 months of initiation of assistance; the reference group consisted of 30 CHF patients not supported by LVAD who were evaluated after an episode of acute heart failure. Both LVAD and reference groups showed poor physical performance; LVAD patients achieved lower workload (LVAD: 36.3 ± 9.0 W, reference: 56.6 ± 18.2 W, P < 0.001) but reached a similar peak oxygen uptake (peak VO2 ; LVAD: 12.5 ± 3.0 mL/kg/min, reference: 13.6 ± 2.9 mL/kg/min, P = ns) and similar percentages of predicted peak VO2 (LVAD: 48.8 ± 13.9%, reference: 54.2 ± 15.3%, P = ns). While the values of the O2 uptake efficiency slope were 12% poorer in LVAD patients than in reference patients (1124.2 ± 226.3 vs. 1280.2 ± 391.1; P = ns), the kinetics of VO2 recovery after exercise were slightly better in LVAD patients (LVAD: 212.5 ± 62.5, reference: 261.1 ± 80.2 sec, P < 0.05). In the first 2 months after initiation of circulatory support, axial-flow LVAD patients are able to sustain a low-intensity workload; though some cardiopulmonary exercise test parameters suggest persistence of a marked physical deconditioning, their cardiorespiratory performance is similar to that of less compromised CHF patients, possibly due to positive hemodynamic effects beginning to be produced by the assist device.

The objective of this work is to compare the effectiveness of hormonal treatment (luteinizing hormone-releasing hormone agonists and/or antiandrogens) as an early or as a deferred intervention for patients with locally advanced prostate cancer (LAPC) and/or asymptomatic metastasis. Systematic review of trials published in 1950–2007. Sources included MEDLINE and bibliographies of retrieved articles. Eligible trials included adults with a history of LAPC who are not suitable for curative local treatment of prostate cancer. We retrieved 22 articles for detailed review, of which 8 met inclusion criteria. The Veterans Administration Cooperative Urological Research Group suggested that delaying hormonal therapy did not compromise overall survival and that many of the patients died of causes other than prostate cancer. In European Organisation for Research and Treatment of Cancer (EORTC) 30846 trial, the median survival for delayed endocrine treatment was 6.1 year, and for immediate treatment 7.6 year, the HR for survival on delayed versus immediate treatment was 1.23 (95 % CI 0.88–1.71), indicating a 23 % nonsignificant trend in favour of early treatment. In EORTC 30891, the immediate androgen deprivation resulted in a modest but statistically significant increase in overall survival. The protocol SAKK 08/88 showed the lack of any major advantage of immediate compared with deferred hormonal treatment regarding quality of life or overall survival. The early intervention with hormonal treatment for patients with LAPC provides important reductions in all-cause mortality, prostate cancer-specific mortality, overall progression, and distant progression compared with deferring their use until standard care has failed to halt the disease.

The open Burch colposuspension, first described in 1961 had been widely employed for the surgical treatment of women with stress urinary incontinence (SUI) caused by urethral hypermobility. We evaluated the long-term efficacy of laparoscopic Burch colposuspension (LBC) for SUI in women. A randomized prospective trial was conducted from September 2010 to January 2013. The extraperitoneal laparoscopic Burch colposuspension was performed by an operator on 96 women, mean age was 54,3 ± 3,7 years all of whom suffered from SUI or mixed urinary incontinence. Patients completed a self-administered the Short Form-36 (SF-36), the Physical Component Summary (PCS) and Mental Component Summary (MCS), the Short Urinary Distress Inventory (SUDI) and Short Incontinence Impact Questionnaire (SIIQ). at both baseline and follow up(6 weeks, 6 months, 18 months postoperatively). The Genito-Urinary Treatment Satisfaction Scale (GUTSS) was used to assess satisfaction with surgery. After follow up was recorded an improvement of questionnaries scores. The general health score is improved after surgery (2,60 ± 1.02 versus 2,76 ± 1.06) with p = 0.09. The PCS baseline score is 46.29 ± 10.95 versus 49.54 ± 10.41 after treatment with p = 0.01, so there was a significant baseline to follow up improvement. The MCS improved also, infact baseline score is 42.19 ± 12.57 versus 42.70 ± 13.03 with p = 0.87. The SUDI baseline score is 50.22 ± 20.73 versus 23.92 ± 17.90, while SIIQ score is 49.98 ± 23.90 versus 31.40 ± 23.83 with p < 0.01. In both questionnaires there is an improvement. Satisfaction with treatment outcomes from the GUTSS at 6-month follow up is 29.5 ± 6.3 with p = 0.46. The LBC has significant advantages, without any apparent compromise in short-term and long term outcomes.

Background The benefits of exercise training in patients with chronic heart failure (CHF) are due to a combination of cardiac and peripheral adaptations. Separating these 2 components is normally impossible, except for patients implanted with total artificial heart (TAH), where cardiac adaptation cannot occur. Methods and Results We report the case of a patient implanted with a CardioWest-TAH who underwent a comprehensive strength and endurance training program and was evaluated by repeated peak cardiopulmonary exercise tests. The patient experienced a 24% increase of peak oxygen consumption and an improvement in recovery kinetics during the training period of 29 months. Conclusion This unique situation of a patient with a TAH, and therefore a fixed peak cardiac output, allows us to isolate training-induced changes in the periphery, that suggest greater oxygen extraction and more efficient metabolic gas kinetics during the exercise and recovery phases.

Atrial masses are rare and more often localized in the right atrium. They are usually detected incidentally, and the leading causes are tumors, thrombi, or infective vegetations. However, normal structures and artifacts (“pseudomasses”) should also be considered in differential diagnosis, especially after cardiac and/or aortic surgery. We present a case of an unusual left atrial image observed on transthoracic echocardiography in an 83-year-old woman after an intervention of open-chest ascending aorta replacement and myocardial revascularization.

A 63-year-old man presented with recurrent syncopal attacks associated with swallowing and right-sided throat pain. Immediately after admission, he presented a 16-s asystolia. The patient's clinical history was unremarkable except for previous postimplant periodontitis. Several episodes of severe bradycardia and sinus pauses, always associated with painful deglutition, were recorded subsequently. X-ray orthopanthomography and magnetic resonance imaging of the neck confirmed several areas of periodontitis around the previous dental implants and right mastoid inflammation. A barium swallow and fibre-optic endoscopy also revealed a small sliding hiatus hernia and distal chronic oesophageal inflammation. Despite complete dental curettage, antibiotics and antigastro-oesophageal reflux therapy, only partial relief of the pain and incomplete resolution of the arrhythmic disorder were obtained after 3 weeks, and the patient underwent pacemaker implantation. At 1-month follow-up, however, he reported the complete relief of the throat pain; subsequent Holter monitoring showed normal sinus rhythm, without pacemaker-induced electrical activity.

The presence of major depressive symptoms is usually considered a negative long-term prognostic factor after an acute myocardial infarction (AMI); however, most of the supporting research was conducted before the era of immediate reperfusion by percutaneous coronary intervention. The aims of this study are to evaluate if depression still retains long-term prognostic significance in our era of immediate coronary reperfusion, and to study possible correlations with clinical parameters of physical performance. In 184 patients with recent ST-elevated AMI (STEMI), treated by immediate reperfusion, moderate or severe depressive symptoms (evaluated by Beck Depression Inventory version I) were present in 10 % of cases. Physical performance was evaluated by two 6-min walk tests and by a symptom-limited cardiopulmonary exercise test: somatic/affective (but not cognitive/affective) symptoms of depression and perceived quality of life (evaluated by the EuroQoL questionnaire) are worse in patients with lower levels of physical performance. Follow-up was performed after a median of 29 months by means of telephone interviews; 32 major adverse cardiovascular events (MACE) occurred. The presence of three vessels disease and low left ventricle ejection fraction are correlated with a greater incidence of MACE; only somatic/affective (but not cognitive/affective) symptoms of depression correlate with long-term outcomes. In patients with recent STEMI treated by immediate reperfusion, somatic/affective but not cognitive/affective symptoms of depression show prognostic value on long-term MACE. Depression symptoms are not predictors "per se" of adverse prognosis, but seem to express an underlying worse cardiac efficiency, clinically reflected by poorer physical performance.

It is known that coronary heart surgery leads to varying degrees of cardiac autonomic derangement, clinically detectable as depression of heart rate variability (HRV) parameters. Few studies report that also surgical replacement of the aortic valve (SAVR) may lead to HRV abnormalities, while very little is known about the autonomic effects obtained after less invasive aortic valve replacement techniques. The study aimed to evaluate HRV after SAVR and to compare it with two less invasive techniques, transapical (TaAVI) and tranfemoral (TfAVI) aortic valve implant.Time-domain heart rate variability (HRV) parameters have been studied by 24-h Holter ECG in 129 patients after SAVR, in 63 patients after TfAVI and in 19 patients after TaAVI.All HRV parameters were significantly depressed in SAVR, while they were almost completely preserved in TfAVI patients; TaAVI cases showed a somehow intermediate behaviour [(SDNN respectively: 71.0±34.9 vs 95.9±29.5 (p0.001) vs 84.4±32.6ms (p=ns)]. Mean heart rate during the 24-h Holter was 8% higher in SAVR patients than in both TfAVI and TaAVI patients. The reported results were not correlated with echocardiographic ejection fraction, or presence of abnormal glucose metabolism, or degree of anaemia or treatment with beta-blockers.SAVR leads to profound depression of some cardiac autonomic parameters, while less invasive procedures allow better preservation of HRV. In particular TfAVI does not induce any significant deterioration of HRV parameters and seems to be the strategy of valve implant with less impact on the cardiovascular autonomic system.

About 60% of the oral cancer arise on a pre-existent potentially malignant disorder of oral mucosa like the oral proliferative verrucous leukoplakia. The treatment with the photodynamic therapy of these lesions represents, in the last years, an innovative, non-invasive and effective therapeutic possibility to achieve the secondary prevention of oral cancer. In the last decade, case reports have described patients with similar treated through a photochemical reaction induced by laser light. The aim of this study is to evaluate the effectiveness of the topical 5-ALA photodynamic therapy in the treatment of a case of Oral proliferative verrucous leukoplakia. A female patient of 80 years old affected by white verrucous plaques on the right buccal mucosa was recruited for our case report. The right side lesion was treated with the photodynamic therapy with topical administered 5- aminolevulinic acid using the 635 nm laser light to activate the photosensitizer. The lesion showed complete response after 4 sessions of photodynamic therapy and no recurrence was noticed after 12 months. The photodynamic therapy can be considered an effective treatment in the management of oral verrucous proliferative leukoplakia, but more clinical trials, with prolonged follow-up controls, are necessary to evaluate its effectiveness in the mid and long time period.

Axial-flow left ventricular assist devices (LVADs) are increasingly used as destination therapy in end-stage chronic heart failure (CHF), as they improve survival and quality of life. Their effect on exercise tolerance in the early phase after implantation is still unclear. The aim of this study was to evaluate the effect of LVADs on the exercise capacity of a group of CHF patients within 2 months after initiation of circulatory support. Cardiopulmonary exercise test data were collected for 26 consecutive LVAD-implanted CHF patients within 2 months of initiation of assistance; the reference group consisted of 30 CHF patients not supported by LVAD who were evaluated after an episode of acute heart failure. Both LVAD and reference groups showed poor physical performance; LVAD patients achieved lower workload (LVAD: 36.3 ± 9.0 W, reference: 56.6 ± 18.2 W, P0.001) but reached a similar peak oxygen uptake (peak VO2 ; LVAD: 12.5 ± 3.0 mL/kg/min, reference: 13.6 ± 2.9 mL/kg/min, P = ns) and similar percentages of predicted peak VO2 (LVAD: 48.8 ± 13.9%, reference: 54.2 ± 15.3%, P = ns). While the values of the O2 uptake efficiency slope were 12% poorer in LVAD patients than in reference patients (1124.2 ± 226.3 vs. 1280.2 ± 391.1; P = ns), the kinetics of VO2 recovery after exercise were slightly better in LVAD patients (LVAD: 212.5 ± 62.5, reference: 261.1 ± 80.2 sec, P0.05). In the first 2 months after initiation of circulatory support, axial-flow LVAD patients are able to sustain a low-intensity workload; though some cardiopulmonary exercise test parameters suggest persistence of a marked physical deconditioning, their cardiorespiratory performance is similar to that of less compromised CHF patients, possibly due to positive hemodynamic effects beginning to be produced by the assist device.

Introduction: Hormonal therapy for prostate cancer has been used for more than 60 years in patient. Whether immediate or deferred hormonal treatment is best for patients with locally advanced prostate cancer (LAPC) and/or or asymptomatic metastasis who are not suitable for curative local treatment of prostate cancer has been debated since its introduction. The objective of this work is to compare the effectiveness of hormonal treatment as an early or as a deferred intervention for patients with (LAPC) and/or asymptomatic metastasis. Materials and methods: Systematic review and meta-analysis of trials published during 1950 to 2011. Results: We retrieved 22 articles for detailed review, of which 8 met inclusion criteria. The Veterans Administration Cooperative Urological Research Group (VACURG) suggested that delaying hormonal therapy did not compromise overall survival and that many of the patients died of causes other than prostate cancer. In the European Organization for Research and Treatment of Cancer (EORTC) 30846 trial the median survival for delayed endocrine treatment was 6.1 yr and for immediate treatment 7.6 yr, the HR for survival on delayed vs immediate treatment was 1.23 (95% CI 0.88 to 1.71), indicating a 23% non significant trend in favor of early treatment. In protocol EORTC 30891 the immediate androgen deprivation resulted in a modest but statistically significant increase in overall survival but no significant difference in prostate cancer mortality or symptom-free survival. The protocol SAKK 08/88 showed for elderly, asymptomatic patients not undergoing curative local treatment, the lack of any major advantage of immediate compared with deferred hormonal treatment regarding quality of life or overall survival. Conclusions: The early intervention with hormonal treatment for patients with LAPC provides important reductions in all-cause mortality, prostate cancer-specific mortality, overall progression, and distant progression compared with deferring their use until standard care has failed to halt the disease.

Transcatheter aortic valve implantation plays a leading role in the management of aortic stenosis in patients with comorbidities but no data are available about cardiac rehabilitation in these subjects. This study aimed to compare safety and efficacy of an early, exercise-based, cardiac rehabilitation programme in octogenarians after a traditional surgical aortic valve replacement versus transcatheter aortic valve implantation.Seventy-eight consecutive transcatheter aortic valve implantation patients were studied in order to evaluate the effect of an exercise-based cardiac rehabilitation programme in comparison to 80 of a similar age having surgical aortic valve replacement. Functional capacity was assessed by a 6 min walking test on admission and at the end of the programme. When possible, a cardiopulmonary exercise test was also performed before discharge.The two groups were similar in terms of gender and length of stay in cardiac rehabilitation; as expected, the transcatheter aortic valve implantation group had more comorbidities but no major complications occurred in either group during rehabilitation. All patients enhanced autonomy and mobility and were able to walk at least with the assistance of a stick. In those patients who were able to perform the 6 min walking test, the distance walked at discharge did not significantly differ between the groups (272.7 ± 108 vs. 294.2 ± 101 m, p = 0.42), neither did the exercise capacity assessed by cardiopulmonary exercise test (peak-VO2 12.5 ± 3.6 vs. 13.9 ± 2.7 ml/kg/min, p = 0.16).Cardiac rehabilitation is feasible, safe and effective in octogenarian patients after transcatheter aortic valve implantation as well as after traditional surgery. An early cardiac rehabilitation programme enhances independence, mobility and functional capacity and should be highly encouraged.

Purpose In congestive heart failure (CHF) patients, a profound cardiac autonomic derangement, clinically expressed by reduced heart rate variability (HRV), is present and is related to the degree of ventricular dysfunction. Implantation of a left ventricular assist device (LVAD) can progressively improve HRV, associated with an increased circulatory output. Data from patients studied at different times after LVAD implantation are controversial. The aims of this study were to assess cardiac autonomic function in the early phases after axial-flow LVAD implantation, and to estimate the potential relevance of recent major surgical stress on the autonomic balance. Methods HRV (time-domain; 24-h Holter) was evaluated in 14 patients, 44.8 ± 25.8 days after beginning of Jarvik-2000 LVAD support; 47 advanced stage CHF, 24 cardiac surgery (CS) patients and 30 healthy subjects served as control groups. Inclusion criteria: sinus rhythm, stable clinical conditions, no diabetes or other known causes of HRV alteration. Results HRV was considerably reduced in LVAD patients in the early phases after device implantation in comparison to all control groups. A downgrading of HRV parameters was also present in CS controls. Circadian oscillations were highly depressed in LVAD and CHF patients, and slightly reduced in CS patients. Conclusions In CHF patients supported by a continuous-flow LVAD, a profound cardiac dysautonomia is still evident in the first two months from the beginning of circulatory support; the degree of cardiac autonomic imbalance is even greater in comparison to advanced CHF patients. The recent surgical stress could be partly linked to these abnormalities.

Background and Purpose We assessed the effects of long-term treatment with picotamide, an antiplatelet agent with dual antithromboxane activity, on the evolution of early asymptomatic carotid atherosclerotic lesions in diabetic patients. Methods In a double-blind, placebo-controlled, 2-year study, 50 type II normotensive diabetic patients (35 men; mean age, 66±5 years) with asymptomatic mild or moderate nonstenotic ( Results At baseline, mean±SD numbers of carotid atherosclerotic lesions per patient were 2.7±1.8 and 2.2±1.2 in the picotamide and placebo groups, respectively. Mean±SD percent stenosis was 25.3±7% in the picotamide group and 27.3±6% in the placebo group. Forty-nine patients completed the study. At month 24, the placebo group (n=24) showed a significant progression in number of carotid atherosclerotic lesions (3.04±1.8; P P P P P =.07). Conclusions In diabetic patients compared with patients receiving placebo, long-term treatment with picotamide can slow the evolution of early carotid atherosclerotic lesions, inhibiting progression of plaque number and growth.

Anemia seems to be rather common in cardiac rehabilitation patients but it is not known whether it could influence cardiovascular performance indexes and prognosis immediately after an acute cardiac event. The purposes of this study were to define its prevalence and to investigate the safety and efficacy of an intensive exercise-based cardiac rehabilitation in patients with and without anemia.436 participants (77% males; mean age 64 ± 13 years) were submitted to a two-week cardiac rehabilitation program consisting of low to medium intensity, individualized training with respiratory, aerobic and calisthenic exercises (three sessions daily, six times per week). A six-minute walking test was performed at enrolment and repeated at discharge together with a cardiopulmonary test.Anemia, as defined according to World Health Organization criteria, was detected in 328 patients (75.2% of the entire population). The distance walked increased from 381 ± 117 m at baseline to 457 ± 110 m (p 0.001) after a mean period of 12.4 ± 4 days. A direct correlation was found between hemoglobin concentrations and both the absolute distance walked (r = 0.48; p 0.001) and peak VO(2) (r = 0.39; p 0.001). Anemic patients walked a significantly shorter distance at baseline and at discharge (p 0.001); however, both groups showed the same increment in the distance walked: 76.0 ± 61 m vs 76.0 ± 60 m (p = 0.99).Our data indicate: 1) a high prevalence of anemia in the study population and 2) that, in spite of a clear reduction in exercise capacity, a moderate anemia does not preclude increments in cardiac performance during a short period of intensive, exercise-based cardiac rehabilitation.

Background: An abnormal glucose tolerance (AGT) in coronary artery disease (CAD) patients could negatively influence recovery after an acute event but the question, relevant in the field of cardiac rehabilitation (CR), is still controversial. Design: Prospective study, aiming to establish the prevalence of AGT and its possible influence on functional recovery in CAD patients without a previous diagnosis of diabetes mellitus (DM). Methods: An oral glucose tolerance test was performed on 230 CAD patients without known DM, submitted to a 2-week period of intensive exercise-based CR after a recent acute myocardial infarction or coronary artery bypass graft. Functional capacity was assessed by a cardiopulmonary exercise test (CPET) and by 6-minute walking tests (6MWT) performed both on admission and at discharge. Results: The prevalence of AGT in our population was 53%. Exercise capacity was lower in AGT patients (maximum workload achieved at CPET 79.3 ± 29.9 vs. 91.8 ± 36.9 W, p = 0.01; peak-VO2 17.8 ± 4.7 vs. 19.8 ± 5.6 ml/kg/min, p = 0.01). In the subgroup of AGT patients characterized by an inferior walking capacity at baseline, the increment in the distance walked was less than in the controls (Δ6MWT: 81.9 ± 60.1 vs. 109.1 ± 72.1, p = 0.04). An independent, negative, association was observed between AGT and Δ6MWT in patients with lower baseline test, and between maximum workload and peak-VO2 in the whole population. Conclusions: A high prevalence of AGT was observed in a population of CAD patients without known DM after an acute coronary event. AGT is associated to a lower functional recovery, and to a reduced exercise capacity at the end of CR.

Increased concentrations of neopterin have been found in conditions causing a stimulation of cellular immunity, including various malignancies. In liver diseases, serum or urinary neopterin levels have been studied in acute viral hepatitis, chronic hepatitis, fatty liver and liver cirrhosis. In the present study neopterin serum levels have been measured in 16 patients with hepatocellular carcinoma (HCC), in 32 patients with liver cirrhosis, and in 28 healthy subjects as controls. Mean values of serum neopterin were significantly increased (p < 0.01) in patients with HCC (15.89 +/- 6.34 nmol/l) when compared with those of normal subjects (4.74 +/- 2.13 nmol/l), but no difference was observed between patients with HCC (associated or not with liver cirrhosis) and patients with liver cirrhosis. Neopterin concentrations are not affected by liver cirrhosis aetiology, nor by its clinical severity, and are not correlated to the values of serum alpha-fetoprotein, alanine aminotransferase, aspartate aminotransferase, alkaline phosphatase, gamma-glutamyl-transferase, and gamma-globulin. The results show that there is a consistent overlap of values in patients with HCC and liver cirrhosis; macrophage activation seems to be a feature of chronic liver diseases, irrespective of HCC development.

Background The open Burch colposuspension, first described in 1961 had been widely employed for the surgical treatment of women with stress urinary incontinence (SUI) caused by urethral hypermobility. We evaluated the long-term efficacy of laparoscopic Burch colposuspension (LBC) for SUI in women. Methods A randomized prospective trial was conducted from September 2010 to January 2013. The extraperitoneal laparoscopic Burch colposuspension was performed by an operator on 96 women, mean age was 54,3 ± 3,7 years all of whom suffered from SUI or mixed urinary incontinence. Patients completed a self-administered the Short Form-36 (SF-36), the Physical Component Summary (PCS) and Mental Component Summary (MCS), the Short Urinary Distress Inventory (SUDI) and Short Incontinence Impact Questionnaire (SIIQ). at both baseline and follow up(6 weeks, 6 months, 18 months postoperatively). The Genito-Urinary Treatment Satisfaction Scale (GUTSS) was used to assess satisfaction with surgery. Results After follow up was recorded an improvement of questionnaries scores. The general health score is improved after surgery (2,60 ± 1.02 versus 2,76 ± 1.06) with p = 0.09. The PCS baseline score is 46.29 ± 10.95 versus 49.54 ± 10.41 after treatment with p = 0.01, so there was a significant baseline to follow up improvement. The MCS improved also, infact baseline score is 42.19 ± 12.57 versus 42.70 ± 13.03 with p = 0.87. The SUDI baseline score is 50.22 ± 20.73 versus 23.92 ± 17.90, while SIIQ score is 49.98 ± 23.90 versus 31.40 ± 23.83 with p < 0.01. In both questionnaires there is an improvement. Satisfaction with treatment outcomes from the GUTSS at 6-month follow up is 29.5 ± 6.3 with p = 0.46. Conclusion The LBC has significant advantages, without any apparent compromise in short-term and long term outcomes.

Objective: A precise characterization of erectile dysfunction (ED) of vascular origin has not yet been achieved, although cavernous peak systolic velocity (PSV) is generally considered a major parameter. Nevertheless the penile dynamic color Doppler is invasive and linked to several complications. The intima-media thicknesses (IMT) of cavernosal artery would add to the predictive value of vasculogenic ED risk and outcomes. We also hypothesized the existence of a correlation between IMT cavernosal artery and IMT carotid arteries. This study seeks to evaluate these hypotheses with our experience, investigating the predictive accuracy of carotid and cavernosal Doppler ultrasound findings for discriminating patients with vasculogenic ED. Material and methods: A total of 59 subjects (32 vasculogenic ED patients - group A - and 27 no vasculogenic ED patients - group B) were evaluated in our andrological center from September 2012 to June 2013 and enrolled in the study. All subjects underwent medical history, erectile function domain of the International Index of Erectile Function, physical examination, routine and sex hormone blood tests, and high resolution dynamic color Doppler ultrasound evaluation of carotid and penile districts and valutation of IMT in both districts. Results: The values of cavernosal artery IMT in group A were higher than in group B (0,28 ± 0,06 mm vs 0,17 ± 0,07 mm). Even the values of carotid artery IMT in vasculogenic ED group were higher than in no vasculogenic ED group (0,74 ± 0,14 mm vs 0,59 ± 0,11 mm). The cavernosal IMT showed a moderate (r = 0.61) positive linear correlation (p < 0.001) with the carotid artery IMT. Conclusions: An increased cavernous IMT might predict ED of vascular origin with more accuracy than PSV and could be a sensitive predictor also for systemic atherosclerosis at an earlier phase.

The open Burch colposuspension, first described in 1961 had been widely employed for the surgical treatment of women with stress urinary incontinence (SUI) caused by urethral hypermobility. We evaluated the long-term efficacy of laparoscopic Burch colposuspension (LBC) for SUI in women.

The ex vivo antiaggregatory activity of picotamide, a dual antithromboxane agent, was assessed to find whether it was maintained in long-term treatment. In a double-blind, placebo-controlled 2-year study, 50 type 2 diabetic patients (35 men and 15 women; mean age 66 ± 5 years) were enrolled and randomly given picotamide, 300 mg t.i.d. or the corresponding placebo. Platelet aggregation studies were performed at baseline and after 1, 3, 6, 12, 18 and 24 months. Compliance to the treatment was assessed by pill count at each visit. Forty-nine patients concluded the study. Starting from month 1, compared with placebo, picotamide-treated patients showed a significant inhibition of agonist-induced (ADP, arachidonic acid and collagen) platelet aggregation (–41%). The antiaggregatory effect was maintained throughout the study. At month 24, in the picotamide group, platelet aggregation was significantly lower compared with placebo (–30%). After 24 months of treatment, 20 out of 23 (86%) picotamide-treated patients showed a significant inhibition of platelet aggregation, whereas the remaining three patients had a normal platelet response. During the study, 12 patients suffered from thrombotic events of death: nine in the placebo group and three in the picotamide group, respectively. It was concluded that picotamide maintains its antiaggregatory effect, in long-term treatment, in more than 85% of patients.

Il contributo intende far emergere la profondità dell'influenza che la poesia di Rilke riveste per il pensiero di Heidegger non in riferimento alla canonica prospettiva relativa al pensiero heideggeriano dopo la svolta, ma in riferimento al passaggio verso la svolta, partendo da "Essere e tempo" con l'obiettivo di approfondire il ruolo che Rilke ha ricoperto per la svolta stessa. Muovendo da ciò, la seconda parte del contributo analizza il contributo di Eugenio Mazzarella alla questione del rapporto tra poetare e pensare facendo riferimento non solo ai suoi scritti teoretici, ma anche a quelli poetici.

La questione identità-differenza così come posta da Heidegger, e le relative letture critiche da parte di Lévinas e Hannah Arendt