Impact of initial antibiotic choice on mortality from pneumococcal pneumonia.

To determine the impact of initial antimicrobial choice on 30-day mortality rate in patients with community-acquired pneumonia due to Streptococcus pneumoniae (CAP-SP), a prospective, observational study was conducted in 35 Spanish hospitals. A total of 638 patients with CAP-SP were identified. Antimicrobials were chosen by the attending physician. Patients were grouped into the following categories: beta-lactam monotherapy (n = 251), macrolide monotherapy (n = 37), beta-lactam plus macrolide (n = 198), levofloxacin alone/combination (n = 48), and other combinations (n = 104). The reference category was beta-lactam+macrolide. The 30-day survival probability was 84.9%. Using multivariate survival analysis, factors related to mortality in the entire population were: bilateral disease, suspected aspiration, shock, HIV infection, renal failure and pneumonia severity index (PSI) score Class IV versus I-III and categories V versus I-III. The association of beta-lactams+macrolides was not better than the use of beta-lactams alone. The current authors analysed the different groups of patients with significant mortality/morbidity: intensive care unit, PSI Class >III, renal failure, chronic lung disease and bacteraemia. Only in patients with PSI Class >III, who had undergone initial antimicrobial choice classified as other combinations, were associated with higher mortality. In conclusion, the current authors have not demonstrated an independent association between initial antimicrobial regimen and 30-day mortality in community-acquired pneumococcal pneumonia patients, except for those with a higher pneumonia severity index score.

Intracellular and extracellular CPPD crystals are a regular feature in synovial fluid from uninflamed joints of patients with CPPD related arthropathy.

OBJECTIVES: To determine whether calcium pyrophosphate dihydrate (CPPD) crystals can be found in the synovial fluid of non-inflamed joints in patients with CPPD related arthropathy; if so, to determine whether they interact with cells and produce subclinical inflammation in this setting. METHODS: 74 synovial fluid samples were obtained from non-inflamed knees of 74 patients with CPPD related arthropathy. Identification of CPPD crystals and synovial fluid cell counts were done manually in undiluted samples using a haematocytometric chamber. A supravital stain (Testsimplets, Boehringer Mannheim) was used to carry out differential counts and to assess the presence of intracellular crystals. RESULTS: All 74 samples contained CPPD crystals. The mean cell count was 301.4 cells/microl (95% confidence interval (CI), 216.6 to 386.4; range 22 to 2302.5). Mononuclear cells accounted for 83.2% (95% CI, 80.4% to 86.1%; range 43% to 99%), the rest being polymorphonuclear (PMN) cells (16.8% (95% CI, 13.9% to 19.6%; range 1% to 57%)). All the samples contained intracellular CPPD crystals, which were found in 24.0% of all the cells (95% CI, 20.1% to 27.9%; range 1% to 78%). Most of the intracellular crystals were inside mononuclear cells (22.2% of all the cells (95% CI, CI 18.5% to 25.9%)), although some PMN also contained them (1.8% of all the cells (95% CI, 1.1% to 2.4%)). CONCLUSIONS: CPPD crystals are normally found in synovial fluid of non-inflamed joints of patients with CPPD related arthropathy, and they interact with cells. The raised cell counts and percentage of PMN suggest mild subclinical inflammation in these joints.

[Primary prevention and treatment of latent tuberculosis infection with isoniazid: efficacy of a control program, 1997-2002]. / Prevención primaria y tratamiento de la infección tuberculosa latente con isoniacida: eficacia de un programa de control, 1997-2002.

OBJECTIVE: To analyze the efficacy of a specific program for the study and follow up of tuberculosis contacts. To study factors related to low adherence to treatment and to the development of liver toxicity caused by isoniazid. PATIENTS AND METHODS: Between December 1996 and December 2002, we found 458 contacts of 79 cases of pulmonary tuberculosis in patients uninfected by human immunodeficiency virus. The contacts were screened for tuberculosis infection and chemoprophylaxis was prescribed according to the recommendations of the Spanish Society of Pulmonology and Thoracic Surgery (SEPAR). RESULTS: We identified 3 cases of tuberculosis among the contacts (prevalence 0.8%). Chemoprophylaxis with isoniazid was prescribed for 215 contacts. One hundred sixty-nine (79%) completed the prophylaxis protocol. The rate of adherence to treatment was lower in immigrants than in nonimmigrants (odds ratio, 3.42; 95% confidence interval, 1.03-11.04; P=.02). Forty-three patients (22%) developed liver toxicity during treatment, which had to be suspended in 3 cases. Duration of chemoprophylaxis was the only independent variable associated with liver toxicity (odds ratio, 3.80; 95% confidence interval, 1.10-13.13; P=.03). CONCLUSIONS: Our study demonstrates the effectiveness of a specific program of study and follow up of tuberculosis contacts. Immigrants require tailored strategies to improve their adherence to the program. The duration of chemo-prophylaxis plays an important role in the development of liver toxicity.

Prevención primaria y tratamiento de la infección tuberculosa latente con isoniacida: eficacia de un programa de control, 1997-2002 / Primary prevention and treatment of latent tuberculosis infection with isoniazid: efficacy of a control program, 1997-2002

OBJETIVO: Analizar la eficacia de un programa específico para el estudio y seguimiento de los contactos de los pacientes con tuberculosis. Evaluar los factores relacionados con una baja adherencia al tratamiento y con el desarrollo de toxicidad hepática por isoniacida. PACIENTES Y MÉTODOS: Entre diciembre de 1996 y diciembre de 2002 se censaron 458 contactos de 79 casos de tuberculosis pulmonar en pacientes sin infección por el virus de la inmunodeficiencia humana. Se realizó cribado de infección tuberculosa y se indicó quimioprofilaxis según la normativa vigente de la Sociedad Española de Neumología y Cirugía Torácica. RESULTADOS: Encontramos 3 casos de tuberculosis entre los contactos (prevalencia del 0,8%). Se indicó quimioprofilaxis con isoniacida en 215 casos. Un total de 169 (79%) completaron el protocolo de quimioprofilaxis. Los inmigrantes mostraron baja adherencia al tratamiento frente a los que no lo eran (odds ratio = 3,42; intervalo de confianza del 95%, 1,03-11,04; p = 0,02). Cuarenta y tres (22%) pacientes presentaron toxicidad hepática durante el tratamiento y en 3 de los casos tuvo que suspenderse. Sólo la duración de la quimioprofilaxis se asoció de forma independiente con el desarrollo de hepatotoxicidad (odds ratio = 3,80; intervalo de confianza del 95%, 1,10-13,13; p = 0,03). CONCLUSIONES: Nuestro estudio demuestra la efectividad de un programa específico de estudio y seguimiento de los contactos de pacientes con tuberculosis. Los inmigrantes requieren estrategias individuales para mejorar su adherencia al programa. La duración de la quimioprofilaxis es un factor importante en el desarrollo de hepatotoxicidad

OBJECTIVE: To analyze the efficacy of a specific program for the study and follow up of tuberculosis contacts. To study factors related to low adherence to treatment and to the development of liver toxicity caused by isoniazid. PATIENTS AND METHODS: Between December 1996 and December 2002, we found 458 contacts of 79 cases of pulmonary tuberculosis in patients uninfected by human immunodeficiency virus. The contacts were screened for tuberculosis infection and chemoprophylaxis was prescribed according to the recommendations of the Spanish Society of Pulmonology and Thoracic Surgery (SEPAR). RESULTS: We identified 3 cases of tuberculosis among the contacts (prevalence 0.8%). Chemoprophylaxis with isoniazid was prescribed for 215 contacts. One hundred sixty-nine (79%) completed the prophylaxis protocol. The rate of adherence to treatment was lower in immigrants than in nonimmigrants (odds ratio, 3.42; 95% confidence interval, 1.03-11.04; P=.02). Forty-three patients (22%) developed liver toxicity during treatment, which had to be suspended in 3 cases. Duration of chemoprophylaxis was the only independent variable associated with liver toxicity (odds ratio, 3.80; 95% confidence interval, 1.10-13.13; P=.03). CONCLUSIONS: Our study demonstrates the effectiveness of a specific program of study and follow up of tuberculosis contacts. Immigrants require tailored strategies to improve their adherence to the program. The duration of chemoprophylaxis plays an important role in the development of liver toxicity

[The solitary pulmonary nodule. An analysis of the experience over 6 years in a medical service]. / Nódulo pulmonar solitario. Análisis de la experiencia durante 6 años en un servicio médico.

We conducted a retrospective analysis of the epidemiological, etiological, clinical and radiological characteristics, and mainly of those related to the diagnosis and treatment, of all the patients with radiological criteria of solitary pulmonary nodule (SPN) studied in our environment during a period of six years (1984-1989). The incidence of SPN was 3.1% (123/3953). Among the 117 cases of filiated etiology, 83 (71%) were malignant and 34 (29%), benign thoracotomy was used as diagnostic method in 11 (32%) benign cases and in 8 (9.6%) malignant cases. Due to several causes, only 31 out of the 75 (41.3%) malignant nodules diagnosed prior to the thoracotomy underwent resection surgery. According to the selection criteria applied in our medium, a high number of the SPN were malignant; in most of these cases, the diagnosis was established without the need of thoracotomy and in less that half of them, curative surgery was attempted.