Publications by authors named "Eduardo NUNez"

Introduction: Antigen carbohydrate 125 (CA125) has emerged as a proxy of fluid overload and inflammation in acute heart failure (AHF). We aimed to evaluate the influence of dapagliflozin on CA125 levels within the first weeks after discharge and whether CA125 changes were related to 6-month adverse clinical outcomes.

Methods: In this retrospective observational study, data from 956 AHF patients discharged from a tertiary hospital were analyzed.

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Background: The Veterans Health Administration (VA) recommends lung cancer screening (LCS), including shared decision making between clinicians and veteran patients. We sought to characterize 1) veteran conceptualization of lung cancer risk and 2) veteran and clinician accounts of shared decision-making discussions about LCS to assess whether they reflect veteran concerns.

Methods: We conducted qualitative interviews at 6 VA sites, with 48 clinicians and 34 veterans offered LCS in the previous 6 mo.

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Article Synopsis
  • The study investigates coordination issues in lung cancer screening (LCS) between Veterans Affairs (VA) and non-VA healthcare settings.
  • Data was gathered through interviews with healthcare providers at six VA medical centers, revealing challenges in managing referrals and tracking patients screened outside of VA.
  • The findings highlight that while non-VA options expand access, poor communication and unclear processes can lead to delays in cancer evaluations, signaling a need for improved coordination strategies to ensure quality care for Veterans.
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  • The MOSCA-FRAIL trial examined the effects of invasive versus conservative treatment strategies in frail patients aged 70 and older with non-ST-segment elevation myocardial infarction (NSTEMI).
  • The study included 167 participants and focused on various geriatric conditions, finding that invasive management had a notable survival benefit primarily for those with lower frailty levels (CFS=4).
  • Results suggested that frailty, as indicated by the Clinical Frailty Scale (CFS), is an important factor in determining the risks and benefits of treatment, with a CFS score greater than 4 potentially signaling a need for more cautious decision-making.
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Objective: to evaluate the immune response to the SARS-CoV-2 vaccines in adults with immune-mediated rheumatic diseases (IMRDs) in comparison to healthy individuals, observed 1-20 weeks following the fourth vaccine dose. Additionally, to evaluate the impact of immunosuppressive therapies, vaccination schedules, the time interval between vaccination and sample collection on the vaccine's immune response.

Methods: We designed a longitudinal observational study conducted at the rheumatology department of Hospital de Copiapó.

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Background: The clinical impact of heart rate (HR) in heart failure with preserved ejection fraction (HFpEF) is a matter of debate. Among those with HFpEF, chronotropic incompetence (CI) has emerged as a pathophysiological mechanism linked to the severity of the disease. In this study, we sought to evaluate whether admission heart rate in acute heart failure differs along left ventricular ejection fraction (LVEF).

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Topic Importance: Lung cancer screening (LCS) has the potential to decrease mortality from lung cancer by 20%. Yet, more than a decade since LCS was established as an evidence-based practice, < 20% of the eligible population in the United States has been screened. This review focuses on critically appraising interventions that have been designed to increase the initial uptake of LCS, including how they address known barriers to LCS and their effectiveness in overcoming these barriers.

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Aims: There is limited information on the sex-specific longitudinal changes of left ventricular ejection fraction (LVEF) after an acute heart failure (AHF) hospitalization. We aimed to investigate whether LVEF trajectories over time and their impact on mortality and AHF readmission rates differ between men and women.

Methods And Results: We conducted a retrospective sex-specific analysis of longitudinal LVEF measurements (n = 9581) in 3383 patients with an index hospitalization for AHF in a single tertiary-level hospital.

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Purpose: Lung cancer screening (LCS) has less benefit and greater potential for iatrogenic harm among people with multiple comorbidities and limited life expectancy. Yet, such individuals are more likely to undergo screening than healthier LCS-eligible people. We sought to understand how patients with marginal LCS benefit conceptualize their health and make decisions regarding LCS.

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Background: Primary care providers (PCPs) are often the first point of contact for discussing lung cancer screening (LCS) with patients. While guidelines recommend against screening people with limited life expectancy (LLE) who are less likely to benefit, these patients are regularly referred for LCS.

Objective: We sought to understand barriers PCPs face to incorporating life expectancy into LCS decision-making for patients who otherwise meet eligibility criteria, and how a hypothetical point-of-care tool could support patient selection.

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Article Synopsis
  • The MOSCA-FRAIL trial investigated treatment approaches for frail patients (aged ≥70) with non-ST-segment elevation myocardial infarction (NSTEMI) and found no significant difference in health outcomes after one year between invasive and conservative strategies.
  • Following extended follow-up until January 2023, the analysis of 167 patients indicated similar survival times and readmission rates, revealing that neither treatment significantly outperformed the other.
  • Overall, while initial outcomes suggested that invasive treatment might lead to shorter survival in the first year, the long-term results demonstrated inconclusive differences, highlighting the need for personalized treatment decisions in frail older adults.
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Importance: Increasing the patient's heart rate (HR) has emerged as a therapeutic option in patients with heart failure with preserved ejection fraction (HFpEF). However, the evidence is conflicting, and the profile of patients who benefit most from this strategy remains unclear.

Objective: To assess the association of β-blocker treatment withdrawal with changes in the percentage of predicted peak oxygen consumption (VO2) across indexed left ventricular diastolic (iLVEDV) and indexed left ventricular systolic volumes (iLVESV), and left ventricular ejection fraction (LVEF) in patients with HFpEF and chronotropic incompetence.

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Aim: Emerging evidence suggests a beneficial effect of higher heart rates in some patients with heart failure with preserved ejection fraction (HFpEF). This study aimed to evaluate the impact of higher backup pacing rates in HFpEF patients with preexisting pacemaker systems that limit pacemaker-mediated dyssynchrony across left ventricular (LV) volumes and LV ejection fraction (LVEF).

Methods And Results: This is a post-hoc analysis of the myPACE clinical trial that evaluated the effects of personalized accelerated pacing setting (myPACE) versus standard of care on changes in Minnesota Living with Heart Failure Questionnaire (MLHFQ) score, N-terminal pro-brain natriuretic peptide (NT-proBNP), pacemaker-detected activity levels, and atrial fibrillation (AF) burden in patients with HFpEF with preexisting pacemakers.

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Achieving the net benefit of lung cancer screening (LCS) depends on optimizing patient selection. To identify factors associated with clinician assessments that a patient was unlikely to benefit from LCS ("LCS-inappropriate") because of comorbidities or limited life expectancy. Retrospective analysis of patients assessed for LCS at 30 Veterans Health Administration facilities from January 1, 2015 to February 1, 2021.

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Background: There is scarce evidence supporting the clinical utility of congestive intrarenal venous flow (IRVF) patterns in patients with acute heart failure.

Objectives: This study aims to: 1) investigate the association between IRVF patterns and the odds of worsening renal function (WRF); 2) track the longitudinal changes of serum creatinine (sCr) across IRVF at predetermined points and its association with decongestion; and 3) explore the relationship between IRVF/WRF categories and patient outcomes.

Methods: IRVF was assessed at baseline (pre-decongestive therapy), 72 hours, and 30 and 90 days postdischarge.

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Article Synopsis
  • Some studies suggest SGLT2 inhibitors like dapagliflozin can impact how cells use iron, particularly in patients with heart failure and reduced ejection fraction (HFrEF).
  • The study aimed to evaluate the effects of dapagliflozin on iron parameters and peak oxygen consumption (Vo) in HFrEF patients.
  • Results showed dapagliflozin significantly decreased ferritin levels and increased peak Vo at 1 and 3 months, especially in patients with lower baseline iron levels, indicating improved energy efficiency linked to iron use.
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Introduction: Spot urinary sodium emerged as a useful parameter for assessing decongestion in patients with congestive heart failure (CHF). Growing evidence endorses the therapeutic role of continuous ambulatory peritoneal dialysis (CAPD) in patients with refractory CHF and kidney disease. We aimed to examine the long-term trajectory of urinary, peritoneal, and total (urinary plus peritoneal) sodium removal in a cohort of patients with refractory CHF enrolled in a CAPD program.

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Introduction: Lung cancer screening can save lives through the early detection of lung cancer, and professional societies recommend key lung cancer screening program components to ensure high-quality screening. Yet, little is known about the key components that comprise the various screening program models in routine clinical settings. The objective was to compare the utilization of these key components across centralized, hybrid, and decentralized lung cancer screening programs.

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Introduction And Objectives: Sodium-glucose cotransporter-2 inhibitors (SGLT2i) induce short-term changes in renal function and hemoglobin. Their pathophysiology is incompletely understood. We aimed to evaluate the relationship between 1- and 3-month estimated glomerular filtration rate (eGFR) and hemoglobin changes following initiation of dapagliflozin in patients with stable heart failure with reduced ejection fraction (HFrEF).

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Background: We aimed to evaluate the effect of dapagliflozin on short-term changes in hemoglobin in patients with stable heart failure with reduced ejection fraction (HFrEF) and whether these changes mediated the effect of dapagliflozin on functional capacity, quality of life and NT-proBNP levels.

Methods: This is an exploratory analysis of a randomized, double-blinded clinical trial in which 90 stable patients with HFrEF were randomly allocated to dapagliflozin or placebo to evaluate short-term changes in peak oxygen consumption (peak VO) (NCT04197635). This substudy evaluated 1- and 3-month changes in hemoglobin levels and whether these changes mediated the effects of dapagliflozin on peak VO, Minnesota Living-With-Heart-Failure test (MLHFQ) and NT-proBNP levels.

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Aims: Traditional adverse events in chronic coronary syndrome (CCS) include atherothrombotic events but usually exclude heart failure (HF). Data are scarce about how new-onset HF modifies mortality risk. We aimed to determine the incidence of HF and compare its long-term mortality risk with myocardial infarction (MI) and stroke in patients with known or suspected CCS.

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Importance: Lung cancer screening (LCS) is underused in the US, particularly in underserved populations, and little is known about factors associated with declining LCS. Guidelines call for shared decision-making when LCS is offered to ensure informed, patient-centered decisions.

Objective: To assess how frequently veterans decline LCS and examine factors associated with declining LCS.

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