Analysis of 24-h noninvasive ambulatory blood pressure profiles by a third-degree polynomial approach

Extensive experience of the circadian variation of blood pressure (BP) has been reported. But some problems exist concerning the correct and satisfactory evaluation of 24-h BP profiles. A well-known approach is the Halberg's 'cosinor' method. But it could be considered inadequate for blood pressure recordings because it is based on a rigid model that does not practically fit empirical data. We suggest an approach based on a cubic function as a suitable method for such an analysis. Our investigation studied the behavior of 24-h blood pressure by a model where the function f(t) is a third-degree polynomial. We recruited 52 untreated patients affected by essential hypertension. Ambulatory BP r…

Two-dimensional echocardiographic evaluation of left ventricular ejection fraction by the ellipsoid single-plane algorithm: a reliable method for assessing low or very low ejection fraction values?

The reliability of two-dimensional (2D) echocardiographic estimation of left ventricular ejection fraction (EF) is commonly recognized, but no satisfactory data are available about the accuracy of low or very low EF values determined by 2D echocardiography (ECHO-EF). The purpose of our study was to assess the reliability of low ECHO-EF values obtained using a simple time-economical algorithm such as the ellipsoid single-plane area-length method. Radionuclide angiography (RAD-EF) was taken as the standard of comparison. We studied 59 consecutive patients (31 women and 28 men) referred to our echocardiographic laboratory. Both 2D echocardiography and radionuclide angiography were blindly perf…

Effects of a short-term hypoenergetic diet on morphofunctional left ventricular parameters in centrally obese subjects

BACKGROUND: We aimed to study centrally obese subjects without other diseases, to establish whether a short-term hypoenergetic balanced regimen is able to positively modify left ventricular (LV) patterns. METHODS: We studied 32 obese subjects (out of 52 recruited for this study) with central fat distribution and without associated diseases. Each subject had undergone a moderately hypoenergetic diet for a four-month follow-up period and had a regular loss in weight. Some relevant clinical and echocardiographic parameters were evaluated. Baseline data and those evaluated at the end of the follow-up period were used for outcome analysis. RESULTS: We found a considerable reduction in LV mass an…

La luce nell'architettura del Mediterraneo

L’articolo precisa alcune considerazioni sul tema della luce nel Mediterraneo dove quest’ultima ha la capacità di incidere sull’architettura e ne evidenzia le forme. La forte relazione tra architettura e luce nel Mediterraneo è presente negli spazi delle Medine del Nord Africa come nelle famose moschee di Kairouan, Tunisi, Cordova, Damasco ecc. Il rapporto tra architettura e luce è già stato teorizzato nel viaggio d’Oriente di Le Corbusièr ed evidenziato nelle sue opere più importanti come Ronchamp e La Tourette, mentre nell’architettura contemporanea emergono progettisti come Alberto Campo Baeza, Louis Barragan, Tadao Ando ed Alberto Campo Baeza. In Alberto Campo Baeza il tema della luce è…

IL SILENZIO VERDE. CONTRIBUTO AI PIANI PAESISTICI NELL'AREA DA SELINUNTE A ERACLEA MINOA

[Deciding in conditions of uncertainty: the Delphi method and its use in the formulation of guidelines].

The purpose of this paper is to analyze one of the most powerful tools in the decision-making under conditions of uncertainty, the Delphi method, and to verify the related interest of scientific world, particularly, for formulation of guidelines. The method combines the expert opinion preventing biases due to institutional role, status or dominant personality. In the text we explain the methodology and the steps through which it is possible to realize the consensus; we schematized in a didactic manner all the phases for an operational approach of the reader. The search by the most diffused biomedical database (Medline) individualized 623 citations, 7 of which are guidelines (3 of remarkable…