Publications by authors named "Koelling T"

Introduction: Guideline-directed medical therapy (GDMT) has significantly improved outcomes in patients with heart failure with reduced ejection fraction (HFrEF). However, GDMT prescribing remains suboptimal. The purpose of this study was to survey cardiologists, internists, and pharmacists on their approach to GDMT prescribing.

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Background: Despite the strong evidence supporting guideline-directed medical therapy (GDMT) in patients with heart failure with reduced ejection fraction (HFrEF), prescription rates in clinical practice are still lacking.

Methods: A survey containing 20 clinical vignettes of patients with HFrEF was answered by a national sample of 127 cardiologists and 68 internal/family medicine physicians. Each vignette had 4-5 options for adjusting GDMT and the option to make no medication changes.

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Background: Guideline-directed medical therapy (GDMT) optimization can improve outcomes in heart failure with reduced ejection fraction.

Objectives: The objective of this study was to determine if a novel computable algorithm appropriately recommended GDMT.

Methods: Clinical trial data from the GUIDE-IT (Guiding Evidence-Based Therapy Using Biomarker Intensified Treatment in Heart Failure) and HF-ACTION (Heart Failure: A Controlled Trial Investigating Outcomes of Exercise Training) trials were evaluated with a computable medication optimization algorithm that outputs GDMT recommendations and a medication optimization score (MOS).

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Background: The successful management of heart failure (HF) involves guideline-based medical therapy as well as self-management behavior. As a result, the management of HF is moving toward a proactive real-time technological model of assisting patients with monitoring and self-management.

Objective: The aim of this paper was to evaluate the efficacy of enhanced self-management via a mobile app intervention on health-related quality of life, self-management, and HF readmissions.

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Background: Sarcoidosis is an inflammatory disease characterized by the formation of granulomas, which involve the heart in up to 25% of patients. Cardiac sarcoidosis can lead to life threatening arrhythmias and heart failure. While corticosteroids have been used as a treatment for over 50 years, they are associated with hypertension, diabetes, and weight gain, further increasing cardiovascular risk.

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Objectives: To assess the prognostic value of positron emission tomography (PET) imaging in patients undergoing evaluation for known or suspected cardiac sarcoidosis (CS) while not on active immunotherapy.

Background: Previous studies have attempted to identify the value of PET imaging to aid in risk stratification of patients with CS, however, most cohorts have included patients currently on immunosuppression, which may confound scan results by suppressing positive findings.

Methods: We retrospectively analyzed 197 patients not on immunosuppression who underwent F-fluorodeoxyglucose (FDG) PET scans for evaluation of known or suspected CS.

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Background: Obesity is common in heart failure with preserved ejection fraction (HFpEF), and a hypocaloric diet can improve functional capacity. Malnutrition, sarcopenia, and frailty are also frequently present, and calorie restriction could harm some patients. Resting metabolic rate (RMR) is an essential determinant of caloric needs; however, it is rarely measured in clinical practice.

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Background: Aortic valve (AV) repair (AVr) using a central coaptation stitch or bioprosthetic AV replacement (AVR) are most commonly performed at the time of durable left ventricular assist device implant to address AV insufficiency (AI).

Methods: Prospective data collection on 46 patients undergoing left ventricular assist device implant from 2007 through 2018 who received concomitant AVr (n = 40) or AVR (n = 6) was retrospectively analyzed to assess freedom from recurrent aortic insufficiency. Paired Wilcoxon rank-sum test was used to compare echocardiographic findings.

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Background: Resting oxygen consumption (VO) is often estimated and frequently used to guide therapeutic decisions in symptomatic heart failure (HF) patients. The relationship between resting VO and symptomatic HF and the accuracy of estimations of VO in this population are unknown.

Methods And Results: We performed a cross-sectional study of HF patients (n = 691) and healthy control subjects (n = 77).

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Objectives: We sought to determine the safety of regadenoson (REG) stress testing in patients who have undergone orthotopic heart transplantation (OHT).

Background: Routine screening for cardiac allograft vasculopathy (CAV) is necessary after OHT. Adenosine stress is contraindicated after heart transplantation due to supersensitivity in denervated hearts.

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Background: Patients with heart failure (HF) are at risk of cognitive dysfunction, including decreased directed attention. Directed attention is critical for performing daily activities including HF self-care by facilitating one to follow instructions or train-of-thought when there are interferences in which presented stimuli are in conflict with one another. The Multi-Source Interference Task (MSIT) is a computerized neuropsychological test that examines the function of the dorsal anterior cingulate cortex, the neurological substrate for directed attention.

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Background: We evaluated the diagnostic and prognostic value of quantification of myocardial flow reserve (MFR) with positron emission tomography (PET) in orthotopic heart transplant patients.

Methods And Results: We retrospectively identified orthotopic heart transplant patients who underwent rubidium-82 cardiac PET imaging. The primary outcome was the composite of cardiovascular death, acute coronary syndrome, coronary revascularization, and heart failure hospitalization.

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Purpose: Regional nodal irradiation, including radiation therapy (RT) to the internal mammary node (IMN) region, improves oncologic outcomes in patients with node-positive breast cancer. Concern remains, however, given the proximity of the IMNs to the heart and the association between cardiac RT exposure and toxicity. The objective of the study was to evaluate rates of ischemic cardiac events (ICEs) and associated risk with treatment of the IMN region.

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Centrifugal (CFG) and axial flow (AX) left ventricular assist devices have different hydrodynamic properties that may impact the effectiveness of left ventricular unloading. We sought to determine whether patients implanted with the HeartWare HVAD (CFG) and HeartMate II (AX) had a similar degree of hemodynamic support by comparing parameters measured using echocardiography and right heart catheterization. Using our prospectively collected database, we identified 268 patients implanted with the AX and 93 with the CFG.

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Background: In heart failure (HF), attention may be decreased because of lowered cerebral blood flow and increased attentional demands needed for self-care.

Objective: Guided by the Attention Restoration Theory, the objective was to test the efficacy of the natural restorative environment (NRE) intervention on improving attention and mood among HF patients and healthy adults.

Methods: A randomized crossover pilot study was conducted among 20 HF patients and an age- and education-matched comparison group of 20 healthy adults to test the efficacy of the NRE intervention compared with an active control intervention.

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Twenty-three percent to 50% of heart failure (HF) patients have memory loss. Objectives were to (a) characterize major allelic frequency of 2 variants in apolipoprotein ( APOE) gene in HF patients, (b) evaluate differences in memory and serum brain-derived neurotrophic factor (BDNF) levels based on APOE ε4 allele(s), and (c) estimate effect sizes (ESs) and confidence intervals (CIs). In this pilot, 29 HF patients were enrolled and 26 completed.

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Iron deficiency is common in heart failure (HF), and intravenous (IV) iron therapy has been associated with improved clinical status in ambulatory patients with HF. There are limited data to support the safety and efficacy of IV iron administration in patients with acute HF. This was a retrospective cohort study of patients admitted to the University of Michigan Health System for HF with low iron studies during admission.

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Aims And Objectives: The objective of this retrospective study was to evaluate reasons heart failure patients decline study participation, to inform interventions to improve enrollment.

Background: Failure to enrol older heart failure patients (age > 65) and women in studies may lead to sampling bias, threatening study validity.

Design: This study was a retrospective analysis of refusal data from four heart failure studies that enrolled 788 patients in four states.

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Background: Hospitalized advanced heart failure (HF) patients are at high risk for malnutrition and death. The Nutritional Risk Index (NRI) is a simple, well-validated tool for identifying patients at risk for nutrition-related complications. We hypothesized that, in advanced HF patients from the ESCAPE (Evaluation Study of Congestive Heart Failure and Pulmonary Artery Catheterization Effectiveness) trial, the NRI would improve risk discrimination for 6-month all-cause mortality.

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Background: Memory loss is common in heart failure (HF) patients, but few interventions have been tested to treat it. The objective of this study was to evaluate efficacy of a cognitive training intervention, Brain Fitness, to improve memory, serum brain-derived neurotropic factor (BDNF) levels, working memory, processing speed, executive function, instrumental activities of daily living, mobility, depressive symptoms, and health-related quality of life.

Methods And Results: Twenty-seven HF patients were randomly assigned to Brain Fitness and health education active control interventions.

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