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1.
Eur J Clin Microbiol Infect Dis ; 36(5): 911-915, 2017 May.
Artículo en Inglés | MEDLINE | ID: mdl-28054228

RESUMEN

Polymicrobial bacteraemia involving Streptococcus pneumoniae and other bacteria (e.g. Escherichia coli, Staphylococcus aureus, Pseudomonas aeruginosa, Haemophilus influenza, viridans streptococci, Salmonella spp.) occurred in 3.4% of our pneumococcal bacteraemia cases. Compared with 308 controls (monomicrobial bacteraemia), the 77 polymicrobial cases included more males (83 vs 62%, p = 0.001), had serious underlying diseases (100 vs 80%, p < 0.001), abdominal infection (18 vs 5%, p < 0.001), nosocomial infection (33 vs 8%, p < 0.001), shock (40 vs 13%, p < 0.001), and higher mortality (52 vs 18%, p < 0.001). Clinicians must be aware that some patients with pneumococcal bacteraemia may have other bacteria in their blood, which would confer higher mortality and may lead to inappropriate or incomplete antibiotic therapy.


Asunto(s)
Bacteriemia/epidemiología , Coinfección/epidemiología , Bacterias Gramnegativas/aislamiento & purificación , Bacterias Grampositivas/aislamiento & purificación , Infecciones Neumocócicas/epidemiología , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Bacteriemia/microbiología , Estudios de Casos y Controles , Coinfección/microbiología , Femenino , Bacterias Gramnegativas/clasificación , Bacterias Grampositivas/clasificación , Humanos , Masculino , Persona de Mediana Edad , Infecciones Neumocócicas/microbiología , Prevalencia , Factores de Riesgo , Análisis de Supervivencia , Adulto Joven
2.
J Antimicrob Chemother ; 69(4): 924-31, 2014 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-24324223

RESUMEN

OBJECTIVES: We aimed to analyse the clinical epidemiology and genetic diversity of invasive pneumococcal disease (IPD) episodes attributed to the Spain(23F)-ST81 (PMEN1) clone. METHODS: Fifty-eight (2.7%) of 2117 invasive pneumococci isolated from adult patients during the 1990-2012 period shared a PFGE pattern related to the PMEN1 clone. The genotype was confirmed by multilocus sequence typing. The pbp2x, pbp1a, pbp2b and pspA genes were PCR-amplified and sequenced. Polymorphisms in the pspC gene were identified by PCR restriction fragment length polymorphism. The presence of transposons with erythromycin and tetracycline resistance determinants was detected by PCR. RESULTS: The prevalence of the PMEN1 clone increased from 0.8% in 1991 to 6.2% in 2001, and decreased to 0% in 2010-12, concomitant with the introduction of the seven-valent pneumococcal conjugate vaccine for children. A total of 93.1% of patients had pneumonia, meningitis or peritonitis; 87.9% of patients had associated underlying diseases, mainly cancer, chronic obstructive pulmonary disease and diabetes. Two closely related sequence types (STs) (ST81, n = 52; ST85, n = 6) were detected, with different serotypes: 23F (n = 42), 19A (n = 9) and 19F (n = 6). All the isolates were resistant to penicillin, co-trimoxazole and chloramphenicol. All the isolates also shared the same pbp1a allele, whereas multiple alleles of pbp2b, pbp2x, pspA and pspC were detected. Of the isolates, 89.7% were tetracycline resistant and 60.3% (n = 35) were macrolide resistant, and resistance was associated with different Tn916-like transposons. CONCLUSIONS: Adult IPD caused by this clone was mainly detected in patients with underlying conditions, and genetic variability was observed among PMEN1 isolates collected in our area over the past 20 years.


Asunto(s)
Evolución Molecular , Variación Genética , Infecciones Neumocócicas/epidemiología , Infecciones Neumocócicas/microbiología , Streptococcus pneumoniae/clasificación , Streptococcus pneumoniae/genética , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , ADN Bacteriano/genética , Electroforesis en Gel de Campo Pulsado , Femenino , Genes Bacterianos , Genotipo , Humanos , Masculino , Persona de Mediana Edad , Epidemiología Molecular , Tipificación de Secuencias Multilocus , Reacción en Cadena de la Polimerasa , España/epidemiología , Streptococcus pneumoniae/aislamiento & purificación , Adulto Joven
3.
HIV Med ; 10(8): 488-95, 2009 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-19459987

RESUMEN

OBJECTIVES: The aim of the study was to describe trends and risk factors for mortality and changes in antibiotic resistance, serotypes and clones among HIV-infected patients with invasive pneumococcal disease (IPD). METHODS: A prospective study of 199 episodes of IPD occurring in a cohort of 4011 HIV-infected patients was carried out. Predictors of mortality included clinical and microbiological data. The 7-valent pneumococcal conjugate vaccine (PCV7) for children was introduced in late 2001. Time periods were classified for mortality studies as pre- (1986-1996), early (1997-2001) and late (2002-2007) highly active antiretroviral therapy (HAART) era, and for serotype studies as pre-PCV7 (1986-2001) and PCV7 (2002-2007) era. RESULTS: Of 199 IPD episodes, 71 (36%) occurred in HIV-infected patients with associated comorbidities (mainly liver cirrhosis; 52 of 71), which increased in recent years. The incidence of IPD decreased from the pre-HAART era to the early HAART era and then remained stable in the late HAART era (24.1, 8.4 and 7.4 episodes per 1000 patient-years, respectively). Rates of 30-day mortality have risen over the three periods (8, 19 and 25%, respectively; P = 0.017). In multiple logistic regression analysis, predictors of mortality were shock at presentation [odds ratio (OR) 7.01; 95% confidence interval (CI) 2.05-23.87] and associated comorbidities (OR 4.27; 95% CI 1.53-11.92). In the PCV7 era, IPD caused by non-PCV7 serotypes increased, and resistance to betalactams decreased. The most frequent genotypes were Spain(9V)-ST156, Spain(23F)-ST81, ST88(19F), Sweden(1)-ST304 and Spain(6B)-ST90. CONCLUSIONS: In the late HAART era, the incidence of IPD has not significantly decreased. Mortality from IPD has risen in association with an increase in comorbidities such as liver cirrhosis. New vaccination strategies are needed to diminish the burden of IPD in the HIV-infected population.


Asunto(s)
Farmacorresistencia Bacteriana , Infecciones por VIH/mortalidad , Infecciones Neumocócicas/mortalidad , Streptococcus pneumoniae/efectos de los fármacos , Adolescente , Adulto , Terapia Antirretroviral Altamente Activa , Niño , Femenino , Infecciones por VIH/complicaciones , Infecciones por VIH/tratamiento farmacológico , Vacuna Neumocócica Conjugada Heptavalente , Humanos , Incidencia , Cirrosis Hepática/complicaciones , Cirrosis Hepática/epidemiología , Masculino , Persona de Mediana Edad , Mortalidad/tendencias , Infecciones Neumocócicas/complicaciones , Infecciones Neumocócicas/prevención & control , Vacunas Neumococicas/uso terapéutico , Estudios Prospectivos , Análisis de Regresión , Factores de Riesgo , Serotipificación , España/epidemiología , Streptococcus pneumoniae/genética , Streptococcus pneumoniae/aislamiento & purificación , Adulto Joven
4.
J Hosp Infect ; 99(1): 48-54, 2018 May.
Artículo en Inglés | MEDLINE | ID: mdl-29128346

RESUMEN

BACKGROUND: Vascular catheter-related bloodstream infections (CRBSIs) are highly preventable hospital-acquired infections and a major threat to patient safety. While there is significant information regarding CRBSI outcome among intensive care unit (ICU) patients, data regarding non-ICU patients are scarce. AIM: To determine the risk factors associated with 30-day mortality among non-ICU patients with nosocomial CRBSIs. METHODS: Prospective cohort study of non-ICU patients with nosocomial CRBSIs in a tertiary care centre between January 2004 and December 2014. The primary outcome was 30-day mortality, defined as death from any cause within 30 days of CRBSI. Follow-up was performed 30 days after CRBSI onset. Time until death was the dependent variable in Cox regression analysis. FINDINGS: In total, 546 cases of CRBSI were identified. The mean age of patients was 64.5 years [interquartile range (IQR) 55-75 years], 66% were male, and the mean Charlson score was 3.59 (IQR 2-5). Of the 546 cases, 58.4% resulted from central venous catheters and 41.6% from peripheral venous catheters. The causative agents were Gram-positive cocci (70.1% of cases), Gram-negative bacilli (31.1%) and Candida spp. (1%). Mortality within 30 days was 13.9%, with no significant changes over the study period. Independent risk factors for 30-day mortality were Charlson score ≥4 [hazard ratio (HR) 1.80, 95% confidence interval (CI) 1.19-2.73], Staphylococcus aureus infection (HR 2.67, 95% CI 1.61-4.43) and Candida spp. infection (HR 6.1, 95% CI 2.08-18.04). Age; area of admission; type, use and site of vascular catheter; and administration of appropriate empirical antibiotic treatment were not independent risk factors for 30-day mortality. CONCLUSION: Nosocomial CRBSIs outside ICUs are associated with high risk of mortality, particularly among patients with a higher Charlson score and bloodstream infections caused by Staphylococcus aureus and Candida spp.


Asunto(s)
Infecciones Relacionadas con Catéteres/complicaciones , Sepsis/mortalidad , Dispositivos de Acceso Vascular/efectos adversos , Anciano , Anciano de 80 o más Años , Candidiasis/mortalidad , Femenino , Infecciones por Bacterias Gramnegativas/mortalidad , Infecciones por Bacterias Grampositivas/mortalidad , Humanos , Masculino , Estudios Prospectivos , Factores de Riesgo , Análisis de Supervivencia , Centros de Atención Terciaria
5.
J Hosp Infect ; 100(3): e178-e186, 2018 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-29928942

RESUMEN

BACKGROUND: Short-term peripheral venous catheters are a significant source of healthcare-acquired bloodstream infections and a preventable cause of death. AIM: To assess the effectiveness of interventions applied to reduce the incidence and mortality associated with short-term peripheral venous catheter-related bloodstream infections (PVCR-BSIs). METHODS: The intervention included continuous PVCR-BSI surveillance, implementation of preventive measures related to catheter insertion and maintenance in accordance with evidence-based recommendations and the hospital's own data, front-line staff educational campaigns, and assessment of adherence to hospital guidelines by ward rounds. A Poisson regression model was used to estimate the trend of rate per year. FINDINGS: From January 2003 to December 2016, 227 episodes of PVCR-BSI were identified among hospitalized patients at a university hospital. The mean age of patients was 67 years (standard deviation 14 years), 69% were male and the median Charlson score was 3 (interquartile range 2-5). Staphylococcus aureus caused 115 (50.7%) episodes. Thirty-day mortality was 13.2%. After implementation of the intervention, the incidence of PVCR-BSIs decreased significantly from 30 episodes in 2003 (1.17 episodes/10,000 patient-days) to eight episodes in 2016 (0.36/10,000 patient-days). The number of episodes caused by S. aureus decreased from 18 episodes in 2003 (0.70/10,000 patient-days) to three episodes in 2016 (0.14/10,000 patient-day), and mortality decreased from seven cases in 2003 (0.27/10,000 patient-days) to zero cases in 2016 (0.00/10,000 patient-days). CONCLUSIONS: Surveillance, implementation of a multi-modal strategy and periodical assessment of healthcare workers' adherence to hospital guidelines led to a sustained reduction in PVCR-BSIs. This reduction had a major impact on S. aureus BSI rates and associated mortality.


Asunto(s)
Infecciones Relacionadas con Catéteres/epidemiología , Infecciones Relacionadas con Catéteres/mortalidad , Cateterismo Periférico/efectos adversos , Adhesión a Directriz , Control de Infecciones/métodos , Sepsis/epidemiología , Sepsis/mortalidad , Anciano , Anciano de 80 o más Años , Actitud del Personal de Salud , Terapia Conductista/métodos , Infecciones Relacionadas con Catéteres/prevención & control , Femenino , Humanos , Incidencia , Estudios Longitudinales , Masculino , Persona de Mediana Edad , Estudios Prospectivos , Sepsis/prevención & control , Infecciones Estafilocócicas/epidemiología , Infecciones Estafilocócicas/mortalidad , Infecciones Estafilocócicas/prevención & control
6.
Clin Microbiol Infect ; 22(2): 154-160, 2016 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-26454059

RESUMEN

Virulent hypermucoviscous Klebsiella pneumoniae strains associated with the magA and rmpA genes have mainly emerged in Asia. We analysed the frequency and the clinical and molecular epidemiology of K. pneumoniae bacteraemia isolates obtained over a 7-year period (2007-2013). Fifty-three of 878 K. pneumoniae invasive isolates (5.4%) showed a hypermucoviscous phenotype (by the string test). Of these, 16 (30.2%) were magA(+)/rmpA(+), 12 (22.6%) were magA(-)/rmpA(+), and the remaining 25 (47.2%) were magA(-)/rmpA(-). After multilocus sequence typing and wzi sequencing, all magA(+)/rmpA(+) isolates were serotype K1 and sequence type (ST)23. Of the 12 magA(-)/rmpA(+) isolates, nine were K2 (ST380, ST86, ST65, ST25 and ST493), and three magA(-)/rmpA(+) isolates had the new wzi allele 122, an unknown serotype, and the new ST1013. The remaining isolates, which were magA(-)/rmpA(-), showed different serotypes and STs. Patients with magA(+)/rmpA(+) or magA(-)/rmpA(+)K. pneumoniae bacteraemia more frequently had pyogenic liver abscesses (PLAs) and pneumonia than patients with magA(-)/rmpA(-)K. pneumoniae bacteraemia (respectively: 21.4% vs. 8%, p 0.26; and 17.9% vs. 0%, p 0.05). In fact, magA(-)/rmpA(-) isolates were similar to the those termed 'classic' K. pneumoniae isolates causing bacteraemia, the urinary and biliary tracts being the main foci of infection. In conclusion, hypervirulent clones (CC23K1, CC86K2, CC65K2, and CC380K2) were infrequent among K. pneumoniae isolates causing bacteraemia in our geographical area. A hypermucoviscous phenotype as determined with the string test is not enough to recognize these clones; additional molecular studies are needed. Patients with magA(+) and/or rmpA(+)K. pneumoniae bacteraemia more frequently had PLAs and pneumonia than patients without hypermucoviscosity genes.


Asunto(s)
Bacteriemia/microbiología , Infecciones por Klebsiella/microbiología , Klebsiella pneumoniae/aislamiento & purificación , Klebsiella pneumoniae/patogenicidad , Factores de Virulencia/genética , Adulto , Anciano , Técnicas de Tipificación Bacteriana , Femenino , Hospitales de Enseñanza , Humanos , Klebsiella pneumoniae/clasificación , Klebsiella pneumoniae/genética , Absceso Piógeno Hepático/microbiología , Masculino , Persona de Mediana Edad , Tipificación de Secuencias Multilocus , Neumonía Bacteriana/microbiología , España
7.
Semergen ; 42(8): 575-583, 2016.
Artículo en Español | MEDLINE | ID: mdl-26879598

RESUMEN

The widespread of mobile smartphones among the population has resulted in a growing range of mobile applications in health using iOS and Android devices. The level of confidence that such applications deserve and the health information available online to the general population is a widely debated issue. The main objective of this work was to develop a tool -a scale-, for evaluating the reliability of health apps. The scale was developed using a systematic evidence-based approach, and with an expert consensus, built with a Delphi process. This was followed by a health app catalogue, which was used to test and validate our method that helps to recommend the best apps for non-medical experts across 3 different user interest axes: 1) popularity and interest; 2) trust and quality; and 3) usefulness.


Asunto(s)
Información de Salud al Consumidor/normas , Internet , Aplicaciones Móviles/normas , Garantía de la Calidad de Atención de Salud/métodos , Teléfono Inteligente , Telemedicina/normas , Técnica Delphi , Humanos , Lenguaje , Indicadores de Calidad de la Atención de Salud
8.
Arch Intern Med ; 161(14): 1742-8, 2001 Jul 23.
Artículo en Inglés | MEDLINE | ID: mdl-11485507

RESUMEN

BACKGROUND: Few data are available regarding pneumococcal peritonitis. We studied the clinical characteristics of intra-abdominal infections caused by Streptococcus pneumoniae and its prognosis in relation to antibiotic resistance. METHODS: We reviewed all cases of culture-proved pneumococcal peritonitis. Patients with liver cirrhosis and primary pneumococcal peritonitis were compared with patients with Escherichia coli peritonitis. RESULTS: Between January 1, 1979, and December 31, 1998, we identified 45 cases of primary pneumococcal peritonitis in patients with cirrhosis and 19 cases of secondary (or tertiary) pneumococcal peritonitis. Patients with cirrhosis and primary pneumococcal peritonitis vs those with primary E coli peritonitis had more frequent community-acquired infection, 73% vs 47%; pneumonia, 36% vs 2%; and bacteremia, 76% vs 33%; and higher attributable mortality (early mortality), 27% vs 9% (P<.05 for all). Secondary (or tertiary) pneumococcal peritonitis was associated with upper or lower gastrointestinal tract diseases; in most cases, the infection appeared after surgery. A hematogenous spread of S pneumoniae from a respiratory tract infection might be the most important origin of peritonitis; also, S pneumoniae might directly reach the gastrointestinal tract favored by endoscopic procedures or hypochlorhydria. There was an increased prevalence of penicillin and cephalosporin resistance up to 30.7% and 17.0%, respectively, although it was not associated with increased mortality rates. CONCLUSIONS: Primary pneumococcal peritonitis in patients with cirrhosis more often spread hematogenously from the respiratory tract and was associated with early mortality. In secondary (and tertiary) pneumococcal peritonitis, a transient gastrointestinal tract colonization and inoculation during surgery might be the most important mechanisms. Current levels of resistance were not associated with increased mortality rates.


Asunto(s)
Cirrosis Hepática/complicaciones , Peritonitis/microbiología , Infecciones Neumocócicas/microbiología , Streptococcus pneumoniae/efectos de los fármacos , Adulto , Anciano , Estudios de Casos y Controles , Causalidad , Diagnóstico Diferencial , Farmacorresistencia Microbiana , Escherichia coli/efectos de los fármacos , Escherichia coli/aislamiento & purificación , Infecciones por Escherichia coli/complicaciones , Infecciones por Escherichia coli/tratamiento farmacológico , Infecciones por Escherichia coli/mortalidad , Femenino , Humanos , Cirrosis Hepática/mortalidad , Masculino , Persona de Mediana Edad , Peritonitis/clasificación , Peritonitis/complicaciones , Peritonitis/tratamiento farmacológico , Peritonitis/mortalidad , Infecciones Neumocócicas/complicaciones , Infecciones Neumocócicas/tratamiento farmacológico , Infecciones Neumocócicas/mortalidad , Streptococcus pneumoniae/aislamiento & purificación
9.
Clin Microbiol Infect ; 21(3): 254.e1-8, 2015 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-25618436

RESUMEN

Osteoarticular infections (OAI), which are often associated with bacteraemia, seem to be increasing. We studied all patients with bacteraemia and concomitant OAI: septic arthritis (SA), vertebral osteomyelitis (VOM) or peripheral osteomyelitis (POM), which were seen at our institution (1985-2011). Data were extracted from a prospective protocol of bacteraemia cases recorded. Trends in main findings were considered in five periods. Major antibiotic resistance patterns were studied. A total of 601 cases of bacteraemic OAI, accounting for 1.8% of total bactaeremias, were studied: SA (48%), VOM (40%) and POM (17%). When comparing the 1985-91 and 2007-11 periods, the incidence of bacteraemic OAI increased from 2.34 to 5.78 episodes/100 000 inhabitants per year (p <0.001); and nosocomial and healthcare-related cases increased from 18% to 30% (p <0.001) and from 10% to 25% (p <0.001), respectively. Also, there was an increase of age (median, from 49 to 65 years, p <0.001), patients with comorbidities (23% to 59%, p <0.001), and device-related OAI (7% to 28%, p <0.001). Patterns of OAI were changing over time. Compared with younger patients, older adults (≥ 65 years) had more VOM, prosthetic-joint infections and enterococcal OAI. The percentage of OAI caused by methicillin-susceptible Staphylococcus aureus decreased, while those caused by methicillin-resistant S. aureus, streptococci, enterococci, and Gram-negative bacilli increased. There was a link between certain microorganisms with specific OAI and age of patients. Over the past three decades, bacteraemic OAI increased in association with aging and use of orthopaedic devices. Nosocomial and healthcare-related OAI increased, with a rise in multidrug-resistant bacteria. These trends should be considered when planning diagnostic and therapeutic guidelines for OAI.


Asunto(s)
Artritis Infecciosa/epidemiología , Artritis Infecciosa/microbiología , Bacteriemia/epidemiología , Bacteriemia/microbiología , Osteomielitis/epidemiología , Osteomielitis/microbiología , Adulto , Anciano , Artritis Infecciosa/historia , Bacteriemia/historia , Comorbilidad , Infección Hospitalaria , Femenino , Historia del Siglo XX , Historia del Siglo XXI , Humanos , Incidencia , Masculino , Persona de Mediana Edad , Osteomielitis/historia , Vigilancia de la Población , Factores de Riesgo , España/epidemiología , Adulto Joven
10.
AIDS ; 13(17): 2377-88, 1999 Dec 03.
Artículo en Inglés | MEDLINE | ID: mdl-10597779

RESUMEN

BACKGROUND: Most current guidelines state that antiretroviral therapy should be considered for HIV-infected patients with plasma HIV RNA > 5000-10000 copies/ml and CD4 cells > 500 x 10(6) cells/l. However, there is increasing concern about whether this is the optimal point to begin treatment or whether it is better to delay the initiation to more advanced stages. OBJECTIVE: To study the immunological and virological benefits of starting antiretroviral therapy at these early stages. METHODS: A total of 161 HIV-infected asymptomatic patients with CD4 cell count > 500 x 10(6) cells/l and viral load > 10000 copies/ml were randomly assigned to one of five treatment groups: no treatment, twice daily zidovudine and thrice daily zalcitabine (ZDV-ddC), twice daily zidovudine and didanosine (ZDV-ddI), twice daily stavudine and didanosine (D4T-ddI), or a twice daily three-drug regimen with stavudine and lamivudine and ritonavir. The endpoints were progression to < 350 x 10(6) cells/l CD4 cells, to < 500 x 10(6) cells/l with either two Centers for Disease Control class B symptoms or an increase of viral load > 0.5 log10 copies/ml above baseline, or to AIDS or death. In various substudies, the lymphoid tissue and cerebrospinal fluid viral load, development of genotypic resistance, proliferative responses to mitogens and cytomegalovirus, and HIV-1 specific antigens and other immunophenotypic markers were also analysed. RESULTS: Progression rates to study endpoints within 1 year were greater in the control group (31%) than in all groups receiving antiretroviral therapy pooled together (5%; estimated hazard ratio 7.41; 95% confidence interval 5.72-74.55; P < 0.001). The peak mean viral load decrease was greater in the three-drug group when compared with any of the three groups with a two-drug regimen (2.32, 1.65, 1.72 and 1.84, respectively; P < or = 0.001). At 1 year, viral load remained below 20 copies/ml in 30 out of 33 patients in the three-drug group (91%) and in only eight out of 94 patients (9%) in two-drug groups (P = 0.001). The peak mean increase in CD4 cells was also greater in the three-drug group than in the double treatment arms (259 versus 85, 144 and 145 x 10(6) cells/l, respectively; P = 0.001). By comparison, 36% of patients in the three-drug group regimen had to change the therapy as a result of adverse events. Substudies were performed in 60 patients recruited at two sites. Tonsillar tissue HIV RNA was measured in seven patients (two in the two-drug groups and five in the three-drug group) in whom plasma HIV RNA was < 20 copies/ml at 1 year. It was 15151 and 133333 copies/mg tissue in the two patients from the two-drug group, < 40 copies/mg tissue in four patients in the three-drug group, and 485 copies/mg in one patient in the three-drug group. At 1 year there was a mean increase of 4.21+/-2.94% in CD8+CD38+ cells in the control group and a decrease of 9.48+/-3.36% in the two-drug groups (P = 0.01), and 19.87+/-3.64 in the three-drug group (P = 0.001 and P = 0.05, for comparisons with control group and two-drug groups, respectively). Although proliferative responses to cytomegalovirus antigens were significantly greater in those receiving antiretroviral therapy, response to HIV-1 p24 antigen was not detected in any patient in either treatment group. CONCLUSIONS: This study supports the recommendation to start antiretroviral therapy with a three-drug combination during very early stages of HIV-1 disease, at least if viral load is above a cut-off point (10000 copies/ml in our study). The risk of progression was sevenfold higher in non-treated patients at 8 months of follow-up. Some immune system parameters improved toward normal values after 1 year of antiretroviral therapy, but the proliferative response of CD4 T lymphocytes against the p24 HIV-1 antigen was not recovered. Therapeutic approaches with more potent, better-tolerated and more convenient regimens will increasingly favour early intervention with antiretroviral t


Asunto(s)
Fármacos Anti-VIH/administración & dosificación , Infecciones por VIH/tratamiento farmacológico , VIH-1 , Adulto , Fármacos Anti-VIH/efectos adversos , Recuento de Linfocito CD4 , Relación CD4-CD8 , Didanosina/administración & dosificación , Quimioterapia Combinada , Femenino , Infecciones por VIH/inmunología , Infecciones por VIH/virología , Humanos , Lamivudine/administración & dosificación , Masculino , Tonsila Palatina/virología , ARN Viral/sangre , ARN Viral/líquido cefalorraquídeo , Ritonavir/administración & dosificación , España , Estavudina/administración & dosificación , Viremia/tratamiento farmacológico , Viremia/inmunología , Viremia/virología , Zalcitabina/administración & dosificación , Zidovudina/administración & dosificación
11.
J Chemother ; 15(5): 461-5, 2003 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-14598938

RESUMEN

Twenty-eight (11.6%) out of 241 Spanish patients enrolled in an international phase III clinical trial of mild to moderate community-acquired pneumonia (CAP) comparing gemifloxacin vs. trovafloxacin were diagnosed of Legionnaires' disease. A definite diagnosis was established by seroconversion in 13 patients of whom only 2 had a positive Legionella urinary antigen. The remaining 15 patients were possible Legionella infections based on a single elevated IgG titer (> or = 1:512). All patients had a radiologically confirmed diagnosis of pneumonia, 5 (19%) patients were older than 65, comorbidity was present in 9 (33%), and 10 (36%) had to be hospitalized. Fifteen patients were treated with oral gemifloxacin (320 mg/day) and 13 with oral trovafloxacin (200 mg/day). Overall, clinical success occurred in 25 (89.3%) patients after 7 days of treatment and only 1 patient needed a 14-day treatment. There were only one adverse event withdrawal and one clinical failure, and no patients died. In light of the favorable clinical outcome, the use of newer fluoroquinolones seems adequate for the treatment of suspected or proven Legionella pneumonia.


Asunto(s)
Fluoroquinolonas/uso terapéutico , Legionella/patogenicidad , Legionelosis/tratamiento farmacológico , Naftiridinas/uso terapéutico , Neumonía/tratamiento farmacológico , Infecciones Comunitarias Adquiridas , Farmacorresistencia Microbiana , Fluoroquinolonas/efectos adversos , Fluoroquinolonas/farmacología , Gemifloxacina , Humanos , Inmunoglobulina G/análisis , Legionella/efectos de los fármacos , Legionelosis/microbiología , Naftiridinas/efectos adversos , Naftiridinas/farmacología , Neumonía/microbiología , Resultado del Tratamiento
15.
Eur J Nucl Med ; 21(12): 1318-25, 1994 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-7875170

RESUMEN

In a prospective study we examined 38 patients with primary bronchogenic carcinoma to validate the use of indium-111 pentetreotide (IPT) as a diagnostic tool. Of these 38 patients, 25 had small cell lung cancer (SCLC) and 13, non-small cell lung cancer (NSCLC). The aim of the study was to investigate whether (a) the disease can be reliably detected, (b) IPT allows differentiation between SCLC and NSCLC and (c) IPT provides further information on metastatic disease. After giving their informed consent the patients were injected and imaged 4 and 24 h later using a planar whole-body technique. In addition single-photon emission tomography of the thorax and, if necessary, other areas of the body was performed at 24 h. In the 25 patients with SCLC 22 sites of primary tumour were correctly identified (true-positive, TP); one was false-negative (FN) and two were true-negative (TN), the patients being in full remission. Metastases were correctly identified in ten instances (lung, bone and brain), while the findings were FN in five cases. An additional six FN findings resulted in the area of the upper abdomen due to the physiological uptake in the liver, spleen and kidneys. In the 13 patients with NSCLC, ten findings were TP and 3 FN with respect to the primary tumour. Two FNs were squamous cell carcinoma, and one, adenocarcinoma. Metastases were TP in nine cases and FN in one.(ABSTRACT TRUNCATED AT 250 WORDS)


Asunto(s)
Carcinoma Broncogénico/diagnóstico por imagen , Carcinoma de Pulmón de Células no Pequeñas/diagnóstico por imagen , Carcinoma de Células Pequeñas/diagnóstico por imagen , Radioisótopos de Indio , Neoplasias Pulmonares/diagnóstico por imagen , Receptores de Somatostatina/análisis , Somatostatina/análogos & derivados , Células APUD/patología , Anciano , Carcinoma Broncogénico/química , Carcinoma Broncogénico/secundario , Carcinoma de Pulmón de Células no Pequeñas/química , Carcinoma de Pulmón de Células no Pequeñas/secundario , Carcinoma de Células Pequeñas/química , Carcinoma de Células Pequeñas/secundario , Femenino , Humanos , Neoplasias Pulmonares/química , Neoplasias Pulmonares/patología , Masculino , Persona de Mediana Edad , Estadificación de Neoplasias , Estudios Prospectivos , Sensibilidad y Especificidad , Tomografía Computarizada de Emisión de Fotón Único
16.
Eur J Clin Microbiol Infect Dis ; 22(6): 337-41, 2003 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-12783279

RESUMEN

In order to better characterize bacteremic cellulitis caused by Streptococcus pneumoniae, a review was conducted of 10 cases of bacteremic pneumococcal cellulitis, which represented 0.9% of all cases of pneumococcal bacteremia (n=1,076) and 3.2% of all cases of community-acquired bacteremic cellulitis (n=312) that occurred in the Hospital de Bellvitge, Barcelona, from 1984 to 2001. In addition to these 10 cases, 28 cases of bacteremic pneumococcal cellulitis from the literature (Medline 1975-2001) were reviewed. Pneumococcal cellulitis of the face, neck, and trunk was observed more frequently in patients with systemic lupus erythematosus and hematologic disorders, while pneumococcal cellulitis of the limbs was more common in patients with diabetes, alcoholism, and parenteral drug use. In the Hospital de Bellvitge group, bacteremic cellulitis due to Streptococcus pneumoniae was more frequently associated with severe underlying diseases than that due to Staphylococcus aureus or Streptococcus pyogenes (100%, 57%, and 72%, respectively;P=0.01). A concomitant extracutaneous focus of infection (e.g., respiratory tract infection) suggesting hematogenous spread with metastatic cellulitis was more frequent in patients with pneumococcal cellulitis, while a local cutaneous entry of microorganisms was feasible in most patients with Staphylococcus aureus or Streptococcus pyogenes cellulitis. The 30-day mortality was 10% in patients with pneumococcal cellulitis, 13% in patients with Staphylococcus aureus cellulitis, and 23% in patients with Streptococcus pyogenes cellulitis (P=0.3). Thus, bacteremic pneumococcal cellulitis is an unusual manifestation of pneumococcal disease and occurs mainly in patients with severe underlying diseases. In most cases, pneumococcal cellulitis has a different pathophysiologic mechanism than cellulitis caused by Staphylococcus aureus or Streptococcus pyogenes.


Asunto(s)
Bacteriemia/diagnóstico , Celulitis (Flemón)/microbiología , Infecciones Neumocócicas/diagnóstico , Staphylococcus aureus/aislamiento & purificación , Infecciones Estreptocócicas/diagnóstico , Streptococcus pneumoniae/aislamiento & purificación , Streptococcus pyogenes/aislamiento & purificación , Adulto , Anciano , Bacteriemia/epidemiología , Celulitis (Flemón)/epidemiología , Estudios de Cohortes , Femenino , Humanos , Masculino , Persona de Mediana Edad , Infecciones Neumocócicas/epidemiología , Pronóstico , Estudios Retrospectivos , Medición de Riesgo , Índice de Severidad de la Enfermedad , Infecciones Estreptocócicas/epidemiología
17.
Scand J Infect Dis ; 31(5): 495-9, 1999.
Artículo en Inglés | MEDLINE | ID: mdl-10576130

RESUMEN

We evaluated the frequency of and reasons for discontinuation of protease inhibitor therapy in a cohort of HIV-infected patients in a prospective observational study. We included 230 HIV-infected patients who had started protease inhibitor therapy between November 1996 and July 1997. Mean baseline CD4 count was 138 cells/microl and HIV-RNA 4.5 log10. Forty-five percent of patients had prior AIDS and 77% had been treated with nucleoside analogues. Saquinavir-treated patients were at a less advanced stage of HIV disease. Overall, 41.3% of patients discontinued therapy, and their last HIV-RNA measured higher than that of patients who continued therapy: 4.07 vs. 2.70 log10 (p < 0.0001). Reasons for discontinuation of therapy were poor adherence (including abandonment) (18.6%), drug intolerance (12.1%), virological failure (7%) and physician decision (3.5%). In a multivariate model, factors associated with drug discontinuation were not taking indinavir (OR 0.26, 95% CI 0.12-0.59) and being pretreated with nucleoside analogues (OR 3.42, 95% CI 1.58-7.42). We concluded that in routine clinical practice a high proportion of patients discontinued protease inhibitors during the first 6 months of therapy, the main reason being the patient's own decision (abandonment or poor adherence). Psychological support and counselling are warranted in patients when initiating protease inhibitor therapy.


Asunto(s)
Infecciones por VIH/tratamiento farmacológico , Inhibidores de la Proteasa del VIH/administración & dosificación , Pautas de la Práctica en Medicina , Síndrome de Inmunodeficiencia Adquirida/tratamiento farmacológico , Adulto , Análisis de Varianza , Estudios de Cohortes , Consejo , Esquema de Medicación , Femenino , Inhibidores de la Proteasa del VIH/efectos adversos , Humanos , Indinavir/administración & dosificación , Indinavir/efectos adversos , Masculino , Estudios Prospectivos , Ritonavir/administración & dosificación , Ritonavir/efectos adversos , Saquinavir/administración & dosificación , Saquinavir/efectos adversos , Negativa del Paciente al Tratamiento , Carga Viral
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