[Recurrent wheezing in subjects with preceding bronchiolitis. Role of environmental and genetic factors].

We have been following for one year 39 patients, who had been hospitalized in our Institute for an episode of bronchiolitis in the period between November 1986 and April 1987. Only 30 patients (17 males and 13 females) have completed the follow up. The patients have been divided into two groups.

[Epidemiology of symptomatic infections of the urinary tract in the first two years of life].

The incidence of symptomatic Urinary Tract Infection (U.T.I.

[Is appearance of bronchiolitis affected by environmental and genetic factors?].

We have respectively studied 39 patients (22 males and 17 females) in an age below 18 months affected with bronchiolitis and hospitalized in the "Istituto di Pediatria B (Institute of Pediatrics B) of Palermo's University from november 1986 to april 1987. The parameters we have considered are: 1) the family predisposition to atopy; 2) the type of suckling; 3) the social and economical conditions pointed out the overcrowding index; 4) the every day consumption of cigarettes by the cohabitant relatives; 5) the total dosage of IgE. The data of the hospitalized patients have been compared with the ones pointed out in an "examination group" formed by 64 subjects (36 males and 28 females).

[Urinary tract infections in the first 2 years of life. Usefulness of anamnesis in the identification of at risk subjects with malformation uropathies].

We have retrospectively studied 101 patients with an age below 24 months consecutively hospitalized, for symptomatic urinary tract infections, in the "Ospedale dei Bambini" of Palermo and subjected to radiological studies (urography and voiding cystouretrography). We have considered if the symptoms and the clinical objectivity could have given useful indications in the choice of the patients to be subjected to radiological studies. The clinical-anamnestic data have not allowed to distinguish, among patients with U.

[Quantitative determination of urine bacteria in the diagnosis of urinary tract infections in children].

Bacteria counts in fresh, unstained, uncentrifuged urine specimens, using a phase-contrast microscope, magnification X 400, and a hemocytometer chamber, proved to be a very useful method not only of excluding (specificity 0.92) but also identifying urinary tract infection (sensitivity 0.90) in children.