Publications by authors named "Leonardo J Tamariz"

Rationale And Objective: Although low estimated glomerular filtration rate (eGFR) is associated with cardiovascular disease (CVD) events and mortality, the clinical significance of variability in eGFR over time is uncertain. This study aimed to evaluate the associations between variability in eGFR and the risk of CVD events and all-cause mortality.

Study Design: Longitudinal analysis of clinical trial participants.

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Diabetes mellitus (DM) is associated with increased risk of sudden cardiac death (SCD), particularly in patients with heart failure with preserved ejection fraction (HFpEF). However, there are no known biomarkers in the population with DM and HFpEF to predict SCD risk. This study was designed to test the hypothesis that osteopontin (OPN) and some proteins previously correlated with OPN, low-density lipoprotein receptor (LDLR), dynamin 2 (DNM2), fibronectin-1 (FN1), and 2-oxoglutarate dehydrogenase-like (OGDHL), are potential risk markers for SCD, and may reflect modifiable molecular pathways in patients with DM and HFpEF.

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Debates exist regarding the merit of starting one dialysis modality over the other for improved cardiovascular outcomes. Five previously published prospective and retrospective cohort studies have reported inconsistent conclusions on this topic. The aim of this systematic review and meta-analysis is to evaluate the influence initiation of hemodialysis (HD) vs peritoneal dialysis (PD) may have on the relative risk (RR) of subsequent development of adverse cardiovascular events (ACVE) in patients with end-stage renal disease (ESRD).

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Background: Pericardial effusion (PE) is a known complication after hematopoietic stem cell transplant (HSCT). Limited data is currently available regarding the incidence and outcomes of PE in pediatric HSCT.

Methods: We conducted a retrospective study on a cohort of patients who underwent HSCT between 2004 and 2015.

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Background: Lack of medication adherence is associated with significant morbidity and mortality, particularly among minorities. We aim to identify predictors of nonadherence to antiplatelet medications at the time of percutaneous coronary intervention (PCI) with stent among African American and Hispanic patients.

Methods: We used data collected for a randomized clinical trial that recruited 452 minority patients from a large US health insurance organization in 2010 post-PCI to compare telephone-based motivational interviewing by trained nurses with an educational video.

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The National Kidney Foundation Kidney Disease Outcomes Quality Initiative recommends the routine use of hemodialysis arteriovenous (AV) access surveillance to detect hemodynamically significant stenoses and appropriately correct them to reduce the incidence of thrombosis and to improve accesses patency rates. Access blood flow monitoring is considered as one of the preferred surveillance method for both AV fistulas (AVF) and AV grafts (AVG); however, published studies have reported conflicting results of its utility that led healthcare professionals to doubt the benefits of this surveillance method. We performed a meta-analysis of the published randomized controlled trials (RCTs) of AV access surveillance using access blood flow monitoring.

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Background: Minorities have lower adherence to cardiovascular medications and have worst cardiovascular outcomes post coronary stent placement

Objective: The aim of this study is to compare the efficacy of phone-delivered Motivational Interviewing (MINT) to an educational video at improving adherence to antiplatelet medications among insured minorities.

Design: This was a randomized study.

Participants: We identified minorities with a recently placed coronary stent from an administrative data set by using a previously validated algorithm.

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Objective: Evaluate the accuracy of an algorithm at identifying ethnic minorities from administrative claims for enrollment into a clinical trial.

Data Sources/study Setting: Claims data from a health benefits company.

Study Design: We compared results of a three-step algorithm to self-reported race/ethnicity.

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Several lines of evidence support the notion that elevated blood viscosity may predispose to insulin resistance and type 2 diabetes mellitus by limiting delivery of glucose, insulin, and oxygen to metabolically active tissues. To test this hypothesis, the authors analyzed longitudinal data on 12,881 initially nondiabetic adults, aged 45-64 years, who were participants in the Atherosclerosis Risk in Communities (ARIC) Study (1987-1998). Whole blood viscosity was estimated by using a validated formula based on hematocrit and total plasma proteins at baseline.

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Some endoscopic trainees find it difficult to manipulate an endoscope's controls, possibly due to small hand size. To assess this, a survey was mailed to all gastroenterology fellows in the US. Two hundred twenty-seven of 1,295 (17.

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Purpose: This review summarizes the evidence regarding the efficacy of techniques for diagnosis of deep venous thrombosis (DVT) and pulmonary embolism.

Methods: We searched for studies using MEDLINE, MICROMEDEX, the Cochrane Controlled Trials Register, and the Cochrane Database of Systematic Reviews through June 2006. We reviewed randomized controlled trials, systematic reviews of trials, and observational studies if no trials were available.

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Purpose: The aim of this study was to evaluate the evidence on the optimal duration of vitamin K antagonist (VKA) therapy for venous thromboembolism (VTE).

Methods: Randomized controlled trials of VKA for VTE were identified by a computerized database search. Summary event rates for relevant outcomes were calculated using a random effects model with 95% confidence intervals (95% CI).

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Objective: We sought to summarize systematically the published evidence describing the accuracy of contrast-enhanced helical CT for diagnosing pulmonary embolism.

Materials And Methods: We selected all systematic reviews published before December 2003 that evaluated the accuracy of CT angiography for the diagnosis of pulmonary embolism. We also selected all prospective studies from the same time period in the primary literature in which all subjects underwent both CT and conventional angiography, the latter being considered the reference standard.

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Purpose: To summarize the evidence on the predictive value of clinical prediction rules for the diagnosis of venous thromboembolism.

Methods: We selected all studies in the English literature in which a clinical prediction rule was prospectively validated against a reference standard, and calculated likelihood ratios, predictive values, and the area under the receiver operating characteristic (ROC) curve for each prediction rule.

Results: Twenty-three studies met our eligibility criteria: 17 evaluated prediction rules for the diagnosis of deep venous thrombosis and six evaluated rules for pulmonary embolism.

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Vasculitides are currently classified according to the size of the vessels involved and characteristic clinical and histopathologic findings. Antineutrophil cytoplasmic antibodies (ANCA) and other serologic tests have been used to further characterize small vessel vasculitides. Large vessel involvement in ANCA-associated small vessel vasculitides has been overlooked in the medical literature.

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To control ventricular rate in patients with AF, physicians should seek to control heart rate at rest and with exertion. The goal has to be achieved while minimizing costs and adverse effects. For emergency use, i.

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Purpose: This review summarizes the available evidence regarding the efficacy of medications used for ventricular rate control, stroke prevention, acute conversion, and maintenance of sinus rhythm, as well as the efficacy of electrical cardioversion and the use of echocardiography in patients with atrial fibrillation.

Data Sources: The Cochrane Collaboration's database of controlled clinical trials and MEDLINE.

Study Selection: Primarily randomized, controlled trials of medications.

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Purpose: To summarize the evidence comparing the efficacy, safety, and costs of outpatient and inpatient treatment of venous thromboembolism.

Methods: We searched the literature through March 2002 for studies comparing outpatient and inpatient treatment of venous thromboembolism with low molecular weight heparin or unfractionated heparin, and for studies addressing the costs of low molecular weight heparin use in any setting. We included studies with comparison groups or decision analyses.

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Lemierre syndrome (postanginal septicemia) is caused by an acute oropharyngeal infection with secondary septic thrombophlebitis of the internal jugular vein and frequent metastatic infections. A high degree of clinical suspicion is necessary for diagnosis. Fusobacterium necrophorum is the usual etiologic agent.

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