[Hydrogels in medicine. Origin and clinical use]. / Idrogeli per medicina. Origini ed uso clinico.

Hydrogels are a new revolutionary method used to dress wounds without using gauzes and cotton wool. Our hydrogels were produced by irradiation and are perfectly sterile and biocompatible. The innovation of this topical treatment permits direct contact of hydrogels on wounds and results in complete repair of wounds and ulcers that do not heal easily. The fundamental advantage are: disappearance of local pain, very good protection of wounds, easy removal of necrotic tissue, total adhesion on wounds and simple removal without pain, faster tissue repair.

[Radiculopathy and the organization of health services: applicability verification of a technic for analyzing time factors in diagnostic procedures]. / Le radicolopatie e l'organizzazione dei servizi sanitari: verifica dell'applicabilita' di una tecnica per l'analisi temporale dei processi diagnostici.

The PERT is a SPR (Reticular Programation System) based on statistic-mathematic models. Since some years they are applied to productive processes to increase the efficiency and effectiveness. They all have a same base structure which is the net that is composed by the logical succession of the event and the activity which has the part of the project. Determining the minimum time (to), the maximum one (tp) and the more frequent time (tm) of each activity and applying the statistic method PERT, one gets the probable duration (te) of every activity and the critical path of the net is placed in evidence. This is formed by the chain of those activities whose duration determines the total duration of the project. The Authors have desired to verify the applicability of SPR even to the "medical industry" and, more precisely, to the diagnostic process for the verification of radiculoneuropathy. Such pathology affects a large part of the active population. The diagnostic process in this case comprises besides an accurate neurological and clinical examination of the patient, also the x-ray exam, the electromyography, the Computed Tomography (CT) and the Magnetic Resonance Imaging (MR) exam. These last two investigations gives an increase of diagnostic accuracy. With the collaboration of the physicians of the diagnostic Service, the Authors have measured in every step of the diagnostic procedure the waiting time of 48 patients with low back pain. Applying the PERT method, it has been possible to put in evidence in the net the critical activities. They are such that their duration time determines the probable duration of the whole diagnostic process. Such duration in this case it corresponds to 91 days with a standard deviation of 33 days. The delay of any critical activity causes a lealy of the whole route. This delay influences negatively on the patient's health. Besides it determines an economic damage to the system because a relation cost/time exists. The systems of reticular programmation have as objective not only the one of improving the programmation and the control of the processes, but also the attainment of an optimum cost/time ratio, varying in a way that the total cost of the realization of the process is minimum. They represent a useful criterion to direct Quality Assurance (Q.A) in the local political sanitary context, within the bounds of organization of technical - scientific quality. An accurate application of the Q.A. should modify besides the duration of the critical activities.