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UNLABELLED The International Classification of Headache Disorders (ICHD-II) - 2004 recognises many migraine variants (different from migraine without aura and migraine with typical aura), but acute confusional migraine (ACM) remains unclassified and most clinicians are not well acquainted with it. AIM The aim of this study was to illustrate ACM in the(More)
UNLABELLED Data about the sensitivity and the specificity of the items included in the diagnostic criteria for migraine and tension type headache (TTH) in children is limited and sometimes controversial. AIM To evaluate the diagnostic value of characteristics of migraine and TTH included in the diagnostic criteria of ICHD-II and according to results to(More)
Gallstone ileus represents a rare complication (0,3-0,5%) of a serious, but common disease-gallstones, which affect around 10% of the population in the USA and Western Europe. Associated diseases (usually severe), elderly patients, delayed diagnosis and therapy due to late presentation to the hospital, account for the morbidity and mortality rates described(More)
Gallstone ileus represents a rare (0.3-0.5%), but serious complication of a common illness--the gallbladder lithiasis and the incidence of this fascinating disease has remained the same over the years. The main actual characteristics of this pathology are the age over 65, the female gender (men/women ratio 1/5:1:10--due to the high rate of vesicular(More)
We consider the following question: given a continuous-time non-deterministic (not necessarily time-invariant) dynamical system, is it true that for each initial condition there exists a global-in-time trajectory. We study this question for a large class of systems, namely the class of complete non-deterministic Markovian systems. We show that for this(More)
We propose a strong notion of viability for a set of states of a nonlinear switched system. This notion is defined with respect to a fixed region of the state space and can be interpreted as a condition under with a system can be forced to stay in a given safe set by applying a specific control strategy only when its state is outside the fixed region. When(More)