Biomedical subjects

V Achótegui

Publications and source records attributed to V Achótegui.

3 recordsLinked to original sources

PubMed1999

Predisposing factors to bacterial colonization in chronic obstructive pulmonary disease.

The aim of this prospective observational study was to determine those factors influencing bacterial colonization in patients with stable chronic obstructive pulmonary disease (COPD). Eighty-eight outpatients with stable COPD and 20 patients with normal spirometry and chest radiography (controls) had a fibreoptic bronchoscopy performed with topical aerosol anaesthesia. Bacterial colonization was determined using the protected specimen brush (PSB) with a cut-off > or = 10(3) colony-forming units (CFU x mL(-1)). The influence of age, degree of airflow obstruction, smoking habit, pack-yrs of smoking, and chest radiographic findings on bacterial colonization were assessed by univariate and multivariate analysis. Significant bacterial growth was found in 40% of patients and in none of the controls. Haemophilus influenzae, Streptococcus viridans, S. pneumoniae and Moraxella catarrhalis were the most frequent pathogens. After adjustment for other variables, severe airflow limitation (odds ratio (OR) 5.11, 95% confidence interval (CI) 1.45-17.9) and current smoking (OR 3.17, 95% CI 2.5-8) remained associated with positive bacterial cultures. When only potentially pathogenic micro-organisms were considered, significant bacterial growth was found in 30.7% of patients, with severe airflow obstruction (OR 9.28, 95% CI 2.19-39.3) being the only variable independently associated with positive bacterial cultures. Our results show that stable chronic obstructive pulmonary disease patients have a high prevalence of bacterial colonization of distal airways which is mainly related to the degree of airflow obstruction and cigarette smoking.

Aged↗

PubMed1997

[Community acquired pneumonia. Reliability of the criteria for deciding ambulatory treatment].

To determine whether criteria for not admitting community-acquired pneumonia (CAP) patients diagnosed in the emergency room are appropriate, and to characterize the symptoms, etiology and course of CAP. This one-year prospective, protocol study of immunocompetent CAP patients diagnosed in the emergency room of our hospital enrolled patients not considered to require hospital admission according to the recommendations of the Spanish Society of Respiratory Disease (SEPAR). Medical histories, chest X-rays and blood analysis were obtained for all patients. Blood cultures were analyzed for antibodies against Legionella pneumophila, Mycoplasma pneumoniae, Coxiella burnetii, Chlamydia pneumoniae, Chlamydia psittaci and influenza virus types A and B. The patients received erythromycin for 14 days and were regularly checked by the pulmonologist in the outpatient clinic until signs and symptoms had disappeared. One hundred six patients were enrolled. Mean age was 36 +/- 13 years. Only 3 patients had to be admitted to hospital, after which outcome was good. The main symptoms were fever (106, 100%) and cough (83, 78%). In 46 (43.4%) chest sounds were normal. Microbiologic diagnoses were achieved for 28 (26.4%) and Coxiella burnetii was the agent most often found (19, 17.9%). Outcome was good in all cases, with faster disappearance of symptoms than of radiological signs. The SEPAR criteria for admitting patients with CAP are appropriate. The clinical symptoms of such patients are non specific, a noteworthy finding being that many patients had normal chest sounds. Coxiella burnetii was the most common causative agent. Both clinical and radiological outcomes were excellent.

Adolescent↗

PubMed1997

[Protected bacteriologic brushing in patients with severe copd].

To determine the presence of germs and their concentration in a group of patients with severe chronic obstructive pulmonary disease (COPD) (FEV1 < 50%), some of whom were in stable condition and others of whom were in acute phase. Twenty-six patients with severe COPD (14 stable and 12 acute phase) were enrolled. None had received prior antibiotic or corticoid treatment. The stable patients had no signs or symptoms of exacerbation, whereas the acute-phase patients had increased dyspnea, sputum volume and purulence. The patients received aerosol rather than liquid anesthesia when PSB sampling was performed. A PSB finding was considered positive at a level > or = 10(3) CFU/ml. There were no significant differences between the groups with respect to age, sex, proportion of smokers and ex-smokers or packs per year. The only spirometric measure that was significantly different was (FEV1/FVC, which was lower in the acute-phase group (p < 0.05). Positive PSB findings were recorded for 57.1% of the stable patients and for 66.7% of the acute-phase patients (p = NS). H. influenzae was the microorganism found most often in both groups. The mean CFU/ml level was 8,625 in stable patients and 17,375 in acute-phase patients (p = NS). A large proportion of stable patients (57.1%) with severe COPD harbor significant concentrations of germs as revealed by PSB sampling. Germ concentrations were found in a non significantly greater number of acute-phase patients, confirming the lack of congruence between clinical status and bacteriological condition.

Aged↗