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Biomedical subjects

J M Eiros Bouza

Publications and source records attributed to J M Eiros Bouza.

At least 19 recordsLinked to original sources
PubMed2005

[The etiology of urinary tract infections and the antimicrobial susceptibility of urinary pathogens].

Antibiotic treatment of urinary tract infections in adults is usually empirical, and use of urine culture is an exception. The choice of antibiotic is normally made based on the results of published case studies (positive urine cultures), which are used to determine the most probable etiology and likely antimicrobial susceptibility. The results of studies published in recent years were reviewed, detailing the differences in relation to the place of residence and characteristics of the patients, and any temporary trends. In lower urinary tract infections in patients without risk factors, treatment must mainly cover Escherichia coli. Nevertheless, in complicated urinary tract infections or in patients with risk factors, the available clinical epidemiological data do not provide for safe empirical choice of antibiotic without the use of urine culture. There has been a reduction in the susceptibility of E. coli to various antibiotics, and this shows wide geographic variations; the reduction in the activity of fluoroquinolones could limit its empirical use in the future.

Drug Resistance, Bacterial↗
PubMed2005

[Relation between intake of omega 3 fatty acids and CD4 count in patients with HIV infection: a transversal study].

OBJECTIVES: Polyunsaturated fatty acids are immunomodulatory agents. These agents could develop a main role in patients with HIV infection. The aim of our study was to analyse the relation between polyunsaturated fatty acid intake and CD4 count in HIV infected patients. PATIENTS AND METHODS: Forty patients with HIV infections were enrolled. In all patients, the next variables were recorded; age, sex, drugs, anthropometric evaluation (weight, height, tricipital skinfold, midarm circumference, body mass index) and a biochemical evaluation (albumin, prealbumin, trasferrin, total proteins, total lymphocytes and CD4 count). A 3 day dietary intake questionnaire was performed, too. RESULTS: The mean age was (24 males and 16 females) 37.6 +/- 9.4 years, mean weight 65.6 +/- 12.2 kg and body mass index 23.2 +/- 3.25. Anthropometric evaluation showed a mean tricipital skinfold of 15.1 +/- 5.3 mm, midarm circumference 27.5 +/- 3.1 cm. Caloric intake and macronutrient distribution were normal (carbohydrates 48%, proteins 18% and lipids 34%). Dietary intake of polyunsaturated fatty acids was omega 3 (1.22 +/- 3.1 g/day) and omega 9 (31.5 +/- 11 g/day). Multivariante analysis, with CD4 count as a dependent variable, showed omega 3 intake as a independent variable (F = 6.2; p < 0.05), with an increase of 32 (IC95%: 9.86-52.14) CD4+ (count/uL) with each 1 g of omega 3 dietary intake adjusted by age, sex, and drugs. CONCLUSION: In patients with HIV infection, dietary intake of omega 3 fatty acids increase CD4 count.

Adult↗
PubMed2004

Efficacy of two modalities of triple HIV therapy: probable superiority of indinavir.

The introduction of the so-called highly active antiretroviral therapies has had an impact on the natural history of the HIV infection. The aim of this contribution is to assess the differences in terms of plasma viral load (VL), as a reflection of therapy success or failure. A retrospective study was made of the changes in VL in two cohorts of patients depending on the drugs included in the triple therapy prescribed to them. The comparison of the triple therapies containing any reverse transcriptase inhibitor and different protease inhibitors, indinavir (IDV) (239 patients) versus saquinavir (SQV) or ritonavir (RTV) (138 subjects), showed a significantly higher percentage of patients reaching a 'non-detectable' VL among those receiving indinavir (67.8% versus 54.3%; P = 0.011). The interval before VL levels rose above 30,000 RNA copies/ml was different in the two groups: 385 days (276-495 days) for therapies including indinavir, and 239 days (86-391 days) for saquinavir or ritonavir. This seems to support the excellent behaviour of indinavir when its efficiency is compared with other protease inhibitors acting as potential competitors.

Antiretroviral Therapy, Highly Active↗
PubMed2004

[Variability of HIV-1 viral load in patients cared along 4 years].

BASIS: Analysis of the variations of HIV-1 viral load (VL) in a cohort of patients. MATERIAL AND METHODS: A retrospective study was designed for the calculation and analysis of the differences between two consecutive measurements of VL in a cohort of 1,336 patients along a 48 months follow-up. RESULTS: At the beginning of the follow-up period the highest proportion of patients with decreases of VL (54.2% in their first measurement, at 0-75 days) as well as the least proportion of patients both without changes (30.7%) and with increases of their VL (15.1%), were registered. The proportion of patients with decreases was declining along the study period. More than half of the patients did not experience significant variations in the measurements carried out. CONCLUSIONS: The significant decreases of VL appeared in our series at the beginning of the follow-up period, and a growing proportion of individuals showed elevations of the VL along the period studied.

Adolescent↗
PubMed2003

[Appropriateness of treatment of acute pharyngotonsillitis according to the scientific evidence].

OBJECTIVE: To evaluate the appropriateness of antibiotic prescriptions in children with acute pharyngotonsillitis. METHODS: A descriptive study was performed in a series of pediatric patients diagnosed with acute pharyngotonsillitis in the emergency rooms of 11 Spanish hospitals. The appropriateness of antibiotic prescriptions was assessed by comparing our clinical practice in the use of antibiotics for pharyngotonsillitis with consensus guidelines developed for this study. RESULTS: We collected data from 1716 patients with acute pharyngotonsillitis. Antibiotics were prescribed in 80.9 %, mainly according to empirical criteria. The most commonly used antibiotics were amoxicillin (36 %), amoxicillin-clavulanate (22.5 %), cefixime (6.6 %), azithromycin (5.8 %) and cefuroxime (5.2 %). A total of 39.5 % of the patients were aged less than 3 years, of which 75.9 % were treated empirically. Of the prescribed treatments, 22.8 % were considered as the treatment of choice; 22.4 % as alternatives and 54.8 % as inappropriate. CONCLUSIONS: Antibiotic treatment was prescribed in most of the cases of pharyngotonsillitis and nearly always according to empirical criteria. The number of antibiotic prescriptions was far higher than the expected cases of bacterial pharyngotonsillitis and, in many cases, the antibiotic prescriptions were inappropriate.

Acute Disease↗
PubMed2003

[Observational study on the efficacy of the application of two classical regimens of triple antiretroviral therapy].

BACKGROUND: To compare the temporal evolution of viral load and CD4 parameters in two cohorts of HIV infected patients enrolled in classical triple antiretroviral regimens. METHODS: Retrospective, observational, descriptive study of the proportions of patients reaching undetectable levels of viral load (VL) as well as the time necessary to get it. The two cohorts were as follows: 91 HIV patients on triple therapy with zidovudine plus lamivudine and indinavir (cohort A) versus 80 HIV patients with Stavudine plus Didanosine and Indinavir (cohort B). RESULTS: The evolution of the patients in terms of percentages who reach undetectable VL was similar in the two therapeutic cohorts (75.8%for cohort A vs 73.8% for cohort B) along the duration of the study (four years). However, the mean time period needed to reach undetectable VL was different, 209 days (IC 95% 175-243 days) for patients in zidovudine plus lamivudine and indinavir and 330 days (IC 95% 263-396 days) for stavudine plus didanosine and indinavir regimen. The immunological status observed in the patients when reaching his first undetectable VL was significantly different. The proportion of patients with CD4 cells counts >200/mm3 in cohort A was 83.1% while for patients from cohort B was 65.4% (p=0.032). CONCLUSIONS: This observational study from clinical settings seems demonstrate similar efficacy to reach undetectable VL with both classical triple antiretroviral therapies evaluated but a shorter delay of time to reach that virological situation for zidovudine plus lamivudine and indinavir regimen is reported.

Anti-HIV Agents↗
PubMed2002

[Use of systemic antibiotics in Valladolid (1996-2000)].

A longitudinal retrospective study was conducted to analyze the changes in the use of systemic antibiotics from 1996 to 2000 in the province of Valladolid, Spain. The use of systemic antibiotics was determined according to the defined daily dose and showed a progressive increase during the first four years of the study, followed by a large decrease in the year 2000. When examined by subgroup, wide spectrum penicillins accounted for almost 60% of the antibiotics consumed, and were therefore responsible for this change. Macrolides represented 16.4% of the consumption, which increased during the whole study period. Quinolones, with 9.3% of the total, showed a slow but steady increase. Cephalosporins accounted for 8.1%, with their use decreasing since 1998. It was concluded that wide spectrum penicillins were the most used systemic antibiotics in the study population, although a decreasing trend in their use and an increase in the use of macrolides and quinolones was observed.

Anti-Bacterial Agents↗
PubMed2001

[Inflammation and infection in stable coronary disease and acute coronary syndrome].

OBJECTIVE: To study whether inflammation and infection are related to coronary artery disease. DESIGN: Sixty patients (44 males, mean age 62 +/- 13 years) with acute coronary syndrome and 40 with stable coronary artery disease (31 males, age 64 +/- 10 years) and a control group of 40 individuals (34 males, 53 +/- 5 years) were analyzed. IgG against Chlamydia pneumoniae, Cytomegalovirus and Helicobacter pylori plus C-reactive protein were assessed in all serum samples. In addition, IgM against C. pneumoniae and Cytomegalovirus on admission and C-reactive protein one month later were measured in acute patients. RESULTS: No IgM seropositivity was observed. A high prevalence of IgG seropositivity with no significant differences among the groups was found: C. pneumoniae: acute group 44 (73%), stable group 29 (73%) and control group 25 (63%); Cytomegalovirus: 55 (92%), 37 (92%) and 38 (95%), respectively; and H. pylori, 43 (72%), 32 (80%) and 34 (85%) respectively. There was a high rate of positive C-reactive protein in the acute group: 48 (80%) vs 10 (25%) the stable group and 0% the control group (p < 0.001). C-reactive protein levels were higher in Q-wave infarction than in unstable angina/ non-Q-wave infarction (median 22.65 vs 7.69, p < 0.001). One month later, C-reactive protein levels decreased (median 22.65 vs 3.38, p < 0.001), but were still positive in 40%. CONCLUSIONS: These data suggest that inflammation is detected by the commonly used methods in clinic practice in acute coronary syndromes and to a lesser extent in stable coronary artery disease. It seems that different mechanisms other than infection account for this inflammatory response, at least this being so when infection is assessed by serology. Serology does not appear to be an adequate method to determine the possible relationship among coronary syndromes, infection and inflammation.

Chlamydophila Infections↗
PubMed2001

Nutritional treatment for acquired immunodeficiency virus infection using an enterotropic peptide-based formula enriched with n-3 fatty acids: a randomized prospective trial.

OBJECTIVE: Dietary counseling and intervention based on application of conventional criteria have been ineffective in preventing the progressive weight loss associated with HIV infection. The aim of the study was to compare the progression of clinical and nutritional indicators during nutritional supplementation with or without an enterotropic peptide-based formula enriched with n-3 fatty acids. DESIGN: Randomized trial. SETTING: Tertiary care. SUBJECTS: Ninety-one patients were screened for the study. Twenty-three did not meet the inclusion criteria, therefore 74 patients were randomized. Of these, 38 were randomized to group I (standard formula) and 36 were randomized to group II supplementation (enterotropic peptide-based formula enriched with n-3 fatty acids). INTERVENTIONS: Group I received standard enteral formula and group II received a enterotropic peptide-based enteral formula. The volume was the same (3 cans/day, 236 ml per can). In both groups enteral supplementation were recommended in conjunction with a registered dietitian under a dietary counseling program based on standard nutrition principles. Patients received a prospective serial assessment of nutrition status, nutritional intake with 24 h written food records, GI symptoms, immune function, anthropometric status and intercurrent health events including infections and hospitalization. These determinations were performed at baseline and at 3 months. RESULTS: Treatment with both supplements resulted in a significant and sustained increase in weight (3.2% in group I and 3.1% in group II); this increase was mostly due to fat mass (12.8% in group I) and (7.5% in group II). Total body water and fat free-mass remained unchanged. CD4 counts remained stable in group I, while a significant increase was detected in group II (576+/-403 vs 642+/-394 cells/mm(3); P<0.05). After the 3 month period CD4 counts remained higher in group II. Hospitalization events (infections) were also followed during the 3 month period. Group II had fewer hospitalizations than group I, but no statistical differences were found. CONCLUSIONS: Oral nutritional supplements for a 3 month period were well tolerated and resulted in body weight gain in HIV-infected patients. Supplement-enriched formula, with peptides and n-3 fatty acids, increased CD4 count.

Adolescent↗
PubMed2001

[Nutritional status in HIV infected patients].

OBJECTIVES: Nutritional assessment in HIV infected patients must be a main objective in the treatment of this disease. The main objective of our work was to study the nutritional status with biochemical and anthropometrical parameters in a group of HIV infected patients. MATERIAL AND METHODS: A total of 119 patients were evaluated. In all patients the next parameters were assessed: age, sex, treatment with anti-retroviral drugs, performed an anthropometric evaluation (weight, height, tricipital skinfold, arm circumference, arm muscular circumference and body mass index) and biochemical evaluation (albumin, prealbumin, transferrin, total proteins, triglycerides, cholesterol, lymphocytes and count of CD4). RESULTS: Patients had an average age 37.9 +/- 9.9 years, weight 64.5 +/- 13.2 kg and body mass index 22.5 +/- 3.5. The values of total proteins, albumin, prealbumin y transferrin were all normal, only patients with AIDS had low levels of transferrin (262.5 +/- 49.2 mg/dl vs 277.8 +/- 87.5; p < 0.05). Percentil distribution of anthropometric parameters showed a deep depletion in muscular protein compartment, 53.1% of patients had skinfold under P 50, 91.8% had arm circumference under P 50, and 91.8% arm muscular circumference under P 50. High levels of triglycerides were detected in 30.5%, these levels are related with the HIV phase and the number of antiretroviral drugs. CONCLUSION: Nutritional status in HIV infected patients is good in our population, only a deep depletion in muscular proteic compartment was detected. Transferrin was decreased in AIDS patients. High levels of triglycerides were secondary to the number of antiretroviral drug taking by patients.

Adult↗
PubMed2000

[Clinical manifestations, diagnosis and treatment of Haemophilus influenzae infection].

Haemophilus influenzae is a small, nonmotile, non-spore-forming bacterium, and a strict parasite of humans found principally in the upper respiratory tract. The production of capsule is of major significance to clinicians since it is an important virulence factor. We described six antigenically distinct capsular types, designated a-f. Spread from one individual to another occurs by airborne droplets or by direct contagion with secretions. Haemophilus influenzae produces at least two factors that inhibit the ciliary activity of human epithelial cells in vitro. One of this has been shown to be lipopolysaccharide and the other factor is of low molecular weight, most likely a heat-stable glycopeptide. Type b strains are distinguished by the production of capsular polysaccharide composed of repeating units of ribosyl-ribitol phosphate, account for greater than 95 percent of systemic infections in children. Two contrasting patterns of Haemophilus influenzae disease can be identified. The first and the most serious in its consequences is invasive infection such as meningitis, septic arthritis, epiglottitis, and cellulitis in which bacteremia is a prominent feature; these infections are usually caused by type b strains and occur in young children. The second category includes less serious but numerically more common infections, that occur as a result of contiguous spread of Haemophilus influenzae within the respiratory tract; e.g. otitis media, sinusitis. These latter infections are usually, but not invariably, caused by unencapsulated strains. A provisional diagnosis of meningitis, epiglottitis, facial cellulitis, or septic arthritis will usually be prompted by the history and clinical findings. Confirmation requires microbiologic studies. Cultures of blood, CSF and other normally sterile fluids are diagnostic and therefore under the appropriate circumstances mandatory. Whenever feasible, specimens obtained for culture should also the gram-strained. Detection of capsular antigen in serum, CSF or concentrated urine using immunoelectrophoresis, latex agglutination or enzyme linked immunosorbent assay may be diagnosed and can be found in up to 90 percent of culture proved cases of meningitis. Without treatment, infection due to Haemophilus influenzae can be rapidly fatal, particularly by meningitis and epiglottitis. There is currently a trend to use certain parenteral third generation cephalosporins as initial therapy when lifethreatening Haemophilus influenzae infection is known or suspected in children beyond the neonatal period, commonly used agents included cefotaxime or ceftriaxone. Antibiotic therapy is only one facet of the management of the child with Haemophilus influenzae infection, and critical attention must also be given to supportive therapy. In the ambulatory setting, ampicillin or amoxicillin for 10 days is often satisfactory for the less severe Haemophilus influenzae infections. Cephalosporins are often chosen for treatment of adults, with pneumonia when Haemophilus influenzae is documented.

Haemophilus Infections↗