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Biomedical subjects

F De Benedetto

Publications and source records attributed to F De Benedetto.

At least 19 recordsLinked to original sources

GP management of community-acquired pneumonia in Italy: the ISOCAP study.

BACKGROUND: Community-Acquired Pneumonia (CAP) is still a significant problem in terms of incidence, mortality rate, particularly in infants and the elderly, and socioeconomic burden. General Practitioners (GPs) are the first reference for patients with this disease, but there are few published studies regarding the outpatient treatment of CAP. METHODS: The ISOCAP study aimed to identify the type and outcome of the diagnostic-therapeutic management of CAP by GPs in Italy, within the framework of developing a closer interrelationship between GPs and pulmonary specialists. Thirty-six Pulmonary Divisions throughout Italy each contacted 5 local GPs who agreed to recruit the first 5 consecutive patients who consulted them for suspected CAP within the study's 1-year observation period. RESULTS: A total of 183 GPs took part in the study and enrolled, by the end of the observation period, 763 CAP patients; of these, complete data was available for 737 patients [males=373, females=364, mean age (+/- SD) 58.8 +/- 19.6 years]. 64.4% of patients had concomitant diseases, mainly systemic arterial hypertension and COPD. Diagnosis of CAP was based by GPs on physical examination only in 41.6% of cases; in the remaining chest X-ray was also performed. In only 4.6% of patients were samples sent for microbiological analysis. All patients were treated with antibiotics: 76.7% in mono-therapy, 23.3% with a combination of antibiotics. The antibiotic class most prevalently used in mono-therapy was cephalosporin, primarily ceftriaxone; the most frequently used combinations were cephalosporin + macrolide and cephalosporin + quinolone. Mono-therapy was effective in 70% of cases, the combination of two or more antibiotics in 91.2% of patients. Overall treatment efficacy was 94.7%; hospitalisation was required in 8.5% of cases. CONCLUSIONS: Outpatient management of CAP by GPs in Italy is effective, hospitalisation being necessary only in the most severe cases due to age, co-morbidities or extent of pneumonia. This signifies a very significant savings in national health costs.

Anti-Bacterial Agents↗

Asthma severity and medical resource utilisation.

Asthma represents a growing public health problem and the cost of asthma has been rising in many countries. The aim of this study was to estimate the direct and indirect cost of asthma among adult patients in Italy, and to assess the relationship between healthcare resource use and asthma severity according to the Global Initiative for Asthma (GINA) classification system. A multicentre cross-sectional study was conducted in 16 Italian hospital-based specialised asthma clinics. Data collection was based on self-administered questionnaires and took place during the period May 1-November 30, 1999, and 500 consecutive patients with asthma, aged 18-55 yrs, were enrolled during regularly scheduled visits. Direct costs (drugs, physician visits, emergency service use and hospitalisation), indirect costs (loss of paid workdays) and total costs were determined in euros (Euros) for 1999. Patients with more severe disease, as classified by the GINA guideline, exhibited more night-time and daytime symptoms and were more limited in performing normal daily activities. The mean total cost of asthma per patient per year was estimated to be Euros 1,260; drug costs accounted for 16%, physician costs 12%, emergency service and hospitalisation costs 20% and indirect costs 52% of the mean cost. Stratified by severity, the total annual cost per patient amounted to Euros 720, Euros 1,046, Euros 1,535 and Euros 3,328 for patients with intermittent, mild persistent, moderate persistent and severe persistent asthma, respectively. Asthma severity, as determined by the Global Initiative for Asthma classification, is significantly associated with symptoms, limitations in normal daily activities, asthma-related medical resource utilisation and both direct and indirect costs. Asthma control is not only a clinical but also an economic imperative.

Activities of Daily Living↗

Serological study on Chlamydophila pneumoniae in patients with community-acquired pneumonia.

This study aimed to evaluate the incidence of Chlamydophila pneumoniae antibodies in patients with community acquired pneumonia (CAP) by a new ELISA test (EIA CP-IgG, IgA, IgM--Eurospital, Trieste, Italy). From January 1999 to July 2001 141 patients with clinical signs of CAP were enrolled in sixteen Italian Hospitals. Specific IgM and IgG antibodies anti-C. pneumoniae in serum and IgA in both serum and sputum were detected. At a primary inspection (time T-0) serum and sputum samples were taken from 115/141 patients, whereas serum was collected from only 100/141 patients after 30 days (time T-30). At T-0 24/115 (20.8%) patients showed serological markers thus suggesting an acute C. pneumoniae infection. In 23/24 patients the overall serological pattern found at T-0 was confirmed at T-30. In 32/115 patients (27.8%) serological markers of C. pneumoniae past infection were found positive and were confirmed 30 days later. These data support the role of C. pneumoniae as an important aetiological agent of CAP throughout different geographic areas of Italy. The test was suitable for the laboratory diagnosis of C. pneumoniae infection. In particular, the presence of specific IgA anti- C. pneumoniae in both serum and sputum proved useful to define different stages and evolution of infection.

Adolescent↗

Recent clinical evidence of the efficacy and safety of thiamphenicol glycinate acetylcysteinate and thiamphenicol glycinate.

Thiamphenicol is a broad-spectrum antimicrobial agent active against penicillin-resistant Streptococcus pneumoniae, Staphylococcus aureus VISA strains, most methicillin-resistant isolates and atypical pathogens such as Mycoplasma pneumoniae and Chlamydia pneumoniae). Thiamphenicol is present as glycinate hydrochloride (TG) and glycinate acetylcysteinate (TGA) esters in the parenteral and aerosol dosage form. This multicenter, double-blind, randomized clinical trial aimed to evaluate the efficacy and tolerability of aerosol administration of TGA, compared to TG, in the treatment of acute and/or exacerbated infections of the respiratory tract. Results showed that both treatments ameliorated the symptoms (frequency and severity of cough, difficulty in expectoration) associated with the evaluated pathologies, i.e. tracheobronchitis, acute and exacerbated chronic bronchitis. The investigators rated both treatments Good or Very Good in 90% of patients at the end of treatment, with "Very Good" for patients treated with TGA (37%) compared to 28% of patients treated with TG. Both treatments were well tolerated with fewer than 5% of patients experiencing an adverse event.

Acetylcysteine↗

EDU-CARE, a randomised, multicentre, parallel group study on education and quality of life in COPD.

Chronic obstructive pulmonary disease (COPD) represents one of the main causes of morbidity and mortality in the western world. Unfortunately, its therapy is largely palliative, the key aims of treatment being to reduce exacerbations, minimise symptoms, and improve patients' ability to perform their usual daily activities. In the absence of true disease-modifying treatments, the concept of rehabilitation has become important. In addition, it has been shown that educational and self-management programmes may play a role in the general treatment of COPD patients. This study was promoted by the Italian Association of Hospital Pulmonologists (AIPO) with the aim to verify changes and improvements induced by an educational programme validated by AIPO in patients with COPD. Edu-Care is a 6-month, multicentre, randomised, controlled, parallel-group study. In addition to treatment within the usual therapeutic schemes for COPD, patients were randomised to either the 'Educational' group, i.e. to receive a formal and structured educational programme, or the 'Normal General Advice' group, i.e. to receive the usual general advice given by general practitioners on life-style and on the disease's risk factors and treatment. A number of evaluations were performed: pulmonary function test, walking distance, quality of life, locus of control, register of number of exacerbations and hospital admissions. To date, of the 1,230 patients enrolled interim data are available from 1,003 patients. Males represent 85% of the study population. Smoking habit is quite a common status (21%). In the year prior to enrolment 34% of patients had one exacerbation, 49% 2-3 exacerbations, and 17% more than 3 exacerbations. Seventy-two percent of patients were not hospitalised over the year prior to enroLlment, while 22% were hospitalised once and 6% had more than 2 hospitalisations. Edu-Care is the first large study aimed to evaluate the efficacy of an educational programme for patients with COPD. AIPO wishes to make a contribution to this important field. This is the reason why Edu-Care includes a very large number of patients in numerous Italian centres throughout northern and southern Italy.

Activities of Daily Living↗

Bacterial agents of lower respiratory tract infections (LRTIs), beta-lactamase production, and resistance to antibiotics in elderly people. DEDALO Study Group.

This study determined the etiology of lower respiratory tract infections in the elderly and assessed whether the growth of beta-lactamase producing bacteria is particularly favoured in these patients. Between December 1998 and May 1999, 187 patients with community-acquired pneumonia (CAP), and 887 patients with acute exacerbations of chronic obstructive pulmonary disease (AECOPD) were enrolled. The mean age was 74 years (range of 65-94 year). Sputum and bronchial aspirate for microbiological investigation were obtained. Besides organisms commonly involved in bacterial infections of the lower respiratory tract (i.e. Streptococcus pneumoniae, Haemophilus influenzae, and Moraxella catarrhalis), Enterobacteriaceae and Pseudomonas spp. were also found. A high percentage of these bacteria were beta-lactamase producers. These data along with the clinical presentation, severity of infection, and epidemiological knowledge, might represent a guide for the choice of empiric antimicrobial treatment.

Aged↗

Validation of a new technique to assess exhaled hydrogen peroxide: results from normals and COPD patients.

Chronic airways inflammation in chronic obstructive pulmonary disease (COPD) induces the activation of several cell types with delivery of proteases and reactive oxygen species (ROS). Assessing oxidant content in the exhaled air of COPD patients has proven useful in monitoring airway inflammation. The present study was designed to confirm the usefulness of exhaled hydrogen peroxide concentration determination in COPD patients using a new technique which allows longer storage of the expired air condensate before the H2O2 assay. The technique was applied in 13 healthy nonsmoking subjects (six male, age range 22-40 yrs) and in seven patients (five male, age range 58-81 yrs) with mild or moderate COPD. Subjects breathed into a one-valve mouthpiece, and the exhaled air was directed into a vial kept at 0 degree C. After approximately 15 min of quiet breathing, 1 mL of expired air condensate was collected. An aliquot, 450 microL, of this sample was immediately added to an equal volume of a reaction mixture containing 2 mM 3,5,3',5'-tetramethylbenzidine and 40 microL of enzyme stock solution (0.5 mg.mL-1). After 15 min, 45 microL sulphuric acid was added (1 N final concentration), resulting in a reaction mixture pH of 1.0. After a further 10-min incubation, H2O2 concentration determination was performed spectrophotometrically at 450 nm. This solution, as well as the H2O2 assay, was stable for > or = 24 h if the sample was kept in the dark and at 4 degrees C. There was high stability on repeated measures, with a coefficient of variation equal to zero. The mean +/- SD H2O2 level in exhaled air from normal subjects was 0.12 +/- 0.09 microM, whereas it was significantly increased in COPD patients (0.50 +/- 0.11 microM; p = 0.0001 compared to healthy subjects). In three healthy control subjects, a normal H2O2 level in expired air increased to 0.70-0.80 microM during an acute upper respiratory tract infection. This new technique of hydrogen peroxide assay in expired air condensate greatly minimizes the inaccuracy deriving from the instability of hydrogen peroxide. The preliminary results obtained using this technique provide direct evidence for increased reactive oxygen species production in the airways of stable chronic obstructive pulmonary disease patients. However, the specificity of the procedure could be reduced by the interference of upper respiratory tract infections.

Adult↗

In COPD patients, body weight excess can mask lean tissue depletion: a simple method of estimation.

Although a great number of studies have been carried out on the relationship between chronic obstructive pulmonary disease (COPD) and low body weight, the identification of the most suitable warning signs of this wasting condition is still under debate. It has been indicated in earlier studies that body weight alone is of limited diagnostic value concerning this clinical condition in as far as a great number of COPD patients are usually overweight. For this reason, the aim of the current research was to find parameters that take into consideration the fact that body composition should be taken into account instead of weight only, and to assess whether COPD can be considered a "protein wasting disease", defining sensitive and significant indices of lean tissue depletion in relationship to the severity of the clinical symptoms. One hundred and seventy-five stable COPD outpatients with differing degrees of bronchial obstruction and arterial blood gas abnormalities were consecutively recruited: anthropometric measurements and body composition analysis were carried out; 60 healthy subjects with normal pulmonary function, matched for sex, age and anthropometric parameters, were considered as controls. The data obtained showed a lower prevalence (9%) of underweight COPD patients in comparison with normal weight (37%) and overweight (54%) patients. In COPD patients, the phase angle measured by bioelectrical impedance analysis, whose deterioration is a good indicator of protein mass depletion, was altered by 19%, thus allowing the identification of currently malnourished subjects included in the overweight COPD patients group. In addition, significant correlations (p = 0.000) were found between the same nutritional variable, respiratory function and gas-exchange parameters, thus confirming that the more severe the stage of the pulmonary disease, the higher the degree of protein breakdown, regardless of body weight.

Aged↗

Nedocromil sodium versus theophylline in the treatment of reversible obstructive airway disease.

BACKGROUND: Previous clinical therapeutic research has shown that inhaled nedocromil sodium can replace maintenance oral sustained release theophylline in the management of asthma patients. OBJECTIVE: To compare directly the efficacy and safety of nedocromil sodium and sustained release theophylline. METHODS: Using a randomized, double-blind, double-dummy, parallel-group design, 105 patients with reversible obstructive airways disease (77 asthmatic patients) recruited from four referred-care clinics received, in addition to their existing therapy, 4 mg nedocromil sodium four times daily or sustained release theophylline (maximum daily dose 13 mg/kg) for 6 weeks. Patients with serum theophylline levels within the therapeutic range of 10 to 20 micrograms/mL were retained for efficacy analysis. All were included in a tolerability analysis. Day and nighttime symptoms, inhaled bronchodilator use, morning tightness, cough, and twice daily peak flows were recorded on diary cards. Disease severity, lung function and unusual events were evaluated bi-weekly, and opinion of treatment after 6 weeks. RESULTS: Both treatments improved symptoms, inhaled bronchodilator use and lung function to the same extent. Both treatments were very to moderately effective in > 70% patients. The occurrence of gastrointestinal (P < .05) and central nervous system (P < .01) unusual events was significantly lower for nedocromil sodium compared with theophylline treated patients. CONCLUSIONS: Nedocromil sodium and theophylline were equally effective in this group of patients but nedocromil sodium treatment was associated with significantly fewer side effects, and therefore may be the treatment of choice.

Adolescent↗

Snoring in children: association with respiratory symptoms and passive smoking.

OBJECTIVE: To investigate the relation between snoring and various respiratory symptoms and passive parental smoking. DESIGN: Data were collected by questionnaire. SETTING: Primary schools in Guardiagrele and Francavilla in the Abruzzi region in central Italy. SUBJECTS: 1615 Children aged 6-13 years were categorised according to whether they snored often; occasionally apart from with colds; only with colds; or never. RESULTS: 118 Children were habitual snorers and 137 were reported to snore apart from when they had colds. Never snorers (n = 822) were significantly older than children in other categories. Snoring was significantly associated with rhinitis, production of cough and sputum, previous tonsillectomy, and passive parental smoking. Of the habitual snorers, 82 were exposed to passive smoking. The prevalence of habitual snoring increased significantly with the number of cigarettes smoked by parents (from 5.5% in never smoking [corrected] households to 8.8% in heavy smoking households). CONCLUSIONS: Snoring is quite common in children. The dose-effect relation of smoking and snoring shown in this study adds weight to a further adverse effect of parental smoking on children's health.

Adolescent↗

Day/night variations of airway reactivity after drug premedication.

Seventeen asthmatic, non-atopic patients (aged 15-48 years) were studied at different hours of the day. On 3 different days, they were submitted to a fog-test at 03:00 p.m. and at 03:00 a.m. On 2 different days, they were given fenoterol (200 micrograms) or Duovent (fenoterol 200 micrograms plus ipratropium bromide 80 micrograms). We were able to demonstrate significant inter-hour differences of the basal values of all parameters, except FVC, in all patients at 03:00 p.m. and at 03:00 a.m. We did not observe any inter-hour difference after the fog-test. Both fenoterol and Duovent improved challenge-induced bronchoconstriction. After the fog-test, both drugs showed an inter-hour variability of ventilatory parameters, which was not significant without drugs because it was masked by the magnitude of the obstructive response to challenge.

Adolescent↗

[Circadian rhythm of ventilatory parameters of intrinsic asthma in clinical remission].

In six subjects with intrinsic asthma in clinical remission, time-structure of ventilatory parameters has been evaluated in order to evaluate: 1) which indexes present statistically significant circadian fluctuations; 2) if phase-shifts occur in comparison with normal subjects. After a period of synchronization of 7 days (L/D: 07.30-23.00; meal timing at 08.00, 13.00 and 20.30) all subjects have been studied by spirometry, flow-volume loop and Raw determination 6 times in a 24-hr period at constant intervals of 4 hrs. The results have been evaluated by macroscopic and microscopic analysis statistical significant fluctuations have been shown in these functional indexes: MEF50, Raw, SRaw, SGaw, FRC and RV; no phase-shifts occurred in comparison with normal subjects. On the contrary a circadian rhythm has not been shown in FVC, FEV1, and PEF. Therefore only the effort-independent test should be used to study correctly the bronchial tone.

Adolescent↗