Michele Azzollini

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In order to find out the normal values and to evaluate the effects of age, heart rate, sex, and haemodynamic and standard echocardiographic parameters on pulmonary venous flow velocity obtained by the transthoracic approach. Doppler pulmonary venous flow parameters were measured in 143 healthy subjects aged from 20 to 80 years. Doppler pulmonary venous flow(More)
Left ventricular diastolic indexes are influenced by several variables. In order to evaluate the relationship of these indexes to age, heart rate, sex and to standard echo parameters, 288 normal subjects aged from 20 to 80 years, divided into six age groups, underwent a two-dimensional colour Doppler examination. Doppler examination was performed from the(More)
For the purposes of this research, the optimal MLP neural network topology has been designed and tested by means the specific genetic algorithm multi-objective Pareto-Based. The objective of the research is to predict the trend of the exchange rate Euro/USD up to three days ahead of last data available. The variable of output of the ANN designed is then the(More)
The objective of the research is to analyze the ability of the artificial neural network model developed to forecast the credit risk of a panel of Italian manufacturing companies. In a theoretical point of view, this paper introduces a literature review on the application of artificial intelligence systems for credit risk management. In an empirical point(More)
The hemodynamic effects of standard dose of Nitroglycerin (NTG) ointment (23 +/- 4 mg) and oral Isosorbide Dinitrate (ISDN) 10 mg were compared in the treatment of left ventricular failure. Ten patients, 8 males and 2 females (mean age 59 +/- 9 years), affected by acute myocardial infarction (7 cases). Ischemic cardiomyopathy (2 cases) and hypertensive(More)
The aims of the study were to evaluate in a population of 288 normal subjects 20 to 80 years old (1) the normal values of the indexes of the mitral flow velocity pattern measured either at the tips of the mitral leaflets or at the annulus; (2) whether there was a significant difference between the values obtained at the tips compared with those measured at(More)
A case of Staphylococcus aureus tricuspid valve endocarditis in a patient with permanent transvenous VVI pacemaker and recurrent febrile episodes is described. Medical treatment was not effective, and only with surgical removal of the lead was the infection successfully treated.
The presence of arrhythmias in athletes is not infrequent. Bradyarrhythmias are more frequent in sportsmen than in the general population. This fact is often due to a 'relative vagal hypertony', owing to a training effect. Tachyarrhythmias are also present in sportsmen in almost the same percentage as in sedentary people. Any of several types of(More)
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