Publications by authors named "Pablo Rivas-González"

10 Publications

  • Page 1 of 1

[Bacteraemia and infection of the vascular catheter in the haematology patient: positioning and management based on the Delphi method].

Rev Esp Quimioter 2016 Feb 15;29(1):15-24. Epub 2016 Feb 15.

José Ramón Azanza Perea. Clínica Universidad de Navarra. Navarra; Dirección Avda Pío XII 36., Navarra, Spain.

Objective: Infectious complications are an important cause of morbidity and mortality in haematological patients with febrile neutropenia. The aim of this study was to develop a consensus document of recommendations to optimize the management of febrile neutropenic patients with haematological or vascular catheter infections in areas where there is no solid scientific evidence.

Methods: After reviewing the scientific evidence, a scientific committee composed of experts in haematology and infectious diseases developed a survey with 55 statements. A two- round modified Delphi method was used to achieve consensus.

Results: The online survey was answered by 52 experts in the field of haematology and infectious diseases. After two rounds of evaluation, a consensus was possible in 43 of the 55 statements (78.2%): 40 in agreement and 3 in disagreement. Recommendations are given related to empirical antibiotic treatment of patients with febrile neutropenia, mechanisms of action, toxicity and synergism of antibiotics in this context, modifications of antibiotic treatment in the course of febrile neutropenia, and the management of central vascular catheter infections in the haematological setting.

Conclusions: There is a high degree of agreement among experts on some controversial issues concerning the management of febrile neutropenia and catheter infection in hematologic patients. This agreement has resulted in recommendations that may be useful in clinical practice.
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February 2016

[Salmonella enterica subspecies salamae infection in a patient from Equatorial Guinea associated with consumption of reptile meat].

Enferm Infecc Microbiol Clin 2015 Jun-Jul;33(6):430-1. Epub 2014 Nov 26.

Servicio de Microbiología, Hospital Universitario La Paz-Cantoblanco-Carlos III, Madrid, España.

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March 2017

Response to combined antiretroviral therapy according to gender and origin in a cohort of naïve HIV-infected patients: GESIDA-5808 study.

HIV Clin Trials 2012 May-Jun;13(3):131-41

Tropical Medicine, Infectious Diseases Department, Hospital Universitario Ramón y Cajal (IRYCIS), Madrid, Spain.

Background: We analyzed differences in response to combined antiretroviral therapy (cART) according to sex and geographic origin in a retrospective comparative study of Spanish-born and immigrant patients initiating cART.

Methods: The primary endpoint was time to treatment failure (TTF), defined as virological failure, death, opportunistic infection, interruption of cART, or loss to follow-up. Late diagnosis was defined as a CD4+ cell count ≤ 200 cells/mm3 and/or AIDS at initiation of cART. Survival was analyzed using Kaplan-Meier analysis and Cox regression.

Results: We followed 1,090 patients, of whom 318 were women (45.6% immigrant women [IW]). At initiation of treatment, women had a higher CD4+ count than men (217 vs 190 cells/mm3), a lower viral load (4.7 vs 5 log), and fewer were late starters (49% vs 59%). The adjusted risk of TTF between women and men was not significantly different (hazard ratio [HR], 1.10; 95% CI, 0.79-1.53). TTF was shorter among IW than Spanish-born women (124 weeks [95% CI, 64-183] vs 151 [95% CI, 127-174]) and loss to follow-up was double that of Spanish-born women (25.5% vs 11.6%).

Conclusions: Although response to cART was similar for both sexes, men started treatment later. IW were more frequently lost to follow-up and switched treatment. Measures to improve medical follow-up after initiation of cART should be promoted among this minority group.
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July 2012

Do HIV-Infected Immigrants Initiating HAART have Poorer Treatment-Related Outcomes than Autochthonous Patients in Spain? Results of the GESIDA 5808 Study.

Curr HIV Res 2010 Oct;8(7):521-30

Tropical Medicine Unit, Infectious Diseases Department, Hospital Ramón y Cajal, Carretera de Colmenar Km 9,100, Madrid 28034, Spain.

Objective: currently, 12% of the Spanish population is foreign-born, and a third of newly diagnosed HIV-infected patients are immigrants. We determined whether being an immigrant was associated with a poorer response to antiretroviral treatment.

Methods: historical multicenter cohort study of naïve patients starting HAART. The primary endpoint was time to treatment failure (TTF) defined as virological failure (VF), death, opportunistic disease, treatment discontinuation (D/C), or missing patient. Secondary endpoints were TTF expressed as observed data (TFO; censoring missing patients) and time to virological failure (TVF; censoring missing patients and D/C not due to VF). A multivariate analysis was performed to control for confounders.

Results: a total of 1090 treatment-naïve HIV-infected patients (387 immigrants and 703 autochthonous) from 33 hospitals were included. Most immigrants were from Sub-Saharan Africa (28.3%) or South-Central America/Caribbean (31%). Immigrants were significantly younger (34 y vs. 39 y), more frequently female (37.5% vs. 24.6%), with less HCV coinfection than autochthonous patients (7% vs. 31.3%). There were no differences in baseline viral load (4.95 Log(10) vs. 4.98 Log(10)), CD4 lymphocyte count (193.5/µL vs. 201.5/µL), late initiation of HAART (56.4% vs. 56.0%), or antiretrovirals used. Cox-regression analysis (HR; 95%CI) did not show differences in TTF (0.89; 0.66-1.20), TFO (0.95; 0.66-1.36), or TVF (1.00; 0.57-1.78) between immigrants and autochthonous patients. Losses to follow-up were more frequent among immigrants (17.8% vs. 12.1; p=0.009). Sub-Saharan African patients and immigrant females had a significantly shorter TTF.

Conclusions: the response to HAART among immigrant patients was similar to that of autochthonous patients, although they had a higher rate of losses to follow-up. Sub-Saharan Africans and immigrant females may need particular measures to avoid barriers hindering antiviral efficacy.
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October 2010

Paracoccidioidomycosis in a Spanish missionary.

J Travel Med 2010 Mar-Apr;17(2):139-40

Tropical Medicine Unit, Hospital Carlos III, Madrid, Spain.

Paracoccidioidomycosis is the most important systemic mycosis in South America. In Europe the disease is very rare and only found in returning travelers. Here we report on a 56-year-old Spanish missionary with respiratory symptoms but no other affected systems. Diagnosis was made based on serology and PCR for Paracoccidioides brasiliensis.
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August 2010

[Cyclospora cayetanensis outbreak in travelers to Cuba].

Enferm Infecc Microbiol Clin 2008 Nov;26(9):558-60

Servicio de Enfermedades Infecciosas, Unidad de Medicina Tropical, Hospital Carlos III, Sinesio Delgado 10, Madrid, Spain.

Initially described in travelers, outbreaks of cyclosporiasis were soon linked to imported food products. An outbreak of cyclosporiasis in Spanish travelers is described. After identification of Cyclospora cayetanensis in stool analyses, a specific questionnaire was completed. Pyrosis was described in 57% of cases (4/7). Peptic symptoms can be a useful clue to indicate the diagnosis of cyclosporiasis in patients with travelers' diarrhea.
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November 2008

[Clinical manifestations of HIV infection in distinct geographical areas].

Enferm Infecc Microbiol Clin 2008 May;26 Suppl 5:6-11

Servicio de Enfermedades Infecciosas, Hospital de Donostia San Sebastián, Guipúzcoa, España.

The clinical manifestations of HIV infection vary widely in distinct geographical areas. While HIV-related disease has been well characterized in western countries, relatively few publications have described the clinical manifestations of these diseases in tropical areas, where the vast majority of HIV-infected people are concentrated. In addition, HIV infection may alter the natural history of tropical diseases in several ways and tropical diseases influence the course of HIV infection. The present review describes the major opportunistic infections afflicting people with HIV/AIDS in Africa, Latin America, and Asia and discusses the mutual interactions between HIV and the major tropical diseases.
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May 2008

Effectiveness and safety of abacavir, lamivudine, and zidovudine in antiretroviral therapy-naive HIV-infected patients: results from a large multicenter observational cohort.

J Acquir Immune Defic Syndr 2006 Feb;41(2):154-9

Infectious Diseases and HIV Unit, Hospital Gregorio Marañón, Madrid, Spain.

Objective: To analyze the safety and effectiveness of abacavir, lamivudine, and zidovudine (ABC/3TC/ZDV) in antiretroviral therapy (ART)-naive HIV-infected patients.

Design: Retrospective observational cohort study.

Methods: We analyzed all consecutive ART-naive HIV-infected patients who initiated ABC/3TC/ZDV in 71 centers throughout Spain and had a clinical visit and laboratory data at least 16 weeks after initiating this regimen. We assessed safety, mortality, new AIDS-defining conditions (ADCs) and treatment failure, the latter defined by any of the following: (1) reduction in plasma HIV-1 viral load (pVL) <1 log during the first 12 weeks of ART, unless it was less than the lower limit of quantification (LOQ); (2) failure to achieve a pVL or = LOQ after achieving a pVL
Results: A total of 730 patients were included, median patient age was 37 years, prior ADCs occurred in 20%, median pVL was 4.76 log, and median CD4 count was 255 cells/mm; 109 (14.9%) patients had <100 CD4 cells/mm. After a median follow-up of 50.5 weeks (interquartile ratio: 28-78), 104 (14.25%) patients discontinued therapy because of adverse events and 36 (4.93%) had a suspected hypersensitivity reaction to ABC. The frequency of treatment failure according to an intention-to-treat (ITT) analysis of observed data was 14.4%. In a more rigorous approach considering losses to follow-up and interruptions or switches of therapy as failures, however, the frequency of treatment failure was 22.92%. Factors independently associated with treatment failure by observed data ITT analysis were adherence <90% (hazard ratio [HR] = 4.248, 95% confidence interval [CI]: 2.640 to 6.833), methadone use (HR = 2.116, 95% CI: 1.180 to 3.797), baseline pVL (HR = 1.651, 95% CI: 1.190 to 2.292 per log), and prior ADC (HR = 1.639, 95% CI: 1.009 to 2.662).

Conclusion: The triple-nucleoside regimen of ABC/3TC/ZDV is a reasonable option for ART-naive patients with a pVL <100,000 copies/mL in whom, for any reason, preferred regimens are not advisable, even in patients with a baseline CD4 cell count <100 cells/mm.
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February 2006