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Access to durable LVAD therapy for patients with limited social support: Surveying program-specific approaches. J Heart Lung Transplant 2024; 43:996-998. [PMID: 38342158 DOI: 10.1016/j.healun.2024.02.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2023] [Revised: 01/30/2024] [Accepted: 02/04/2024] [Indexed: 02/13/2024] Open
Abstract
Racial and ethnic disparities in provision of left ventricular assist device (LVAD) therapy have been identified. These disparities may be at least partially related to socioeconomic factors, including social support networks and financial constraints. This study aimed to identify specific barriers, and variations in institutional approaches, to the provision of equitable care to underserved populations. A survey was administered to 237 LVAD program personnel, including physicians, LVAD coordinators, and social workers, at more than 100 LVAD centers across 7 countries. Three fourths of respondents reported that their program required a support person to live with the LVAD patient for some period of time following implantation. In addition, 31% of respondents reported that patients with the inability to pay for medications are turned down at their program. The most significant barriers to successful LVAD implantation were lack of social support, lack of insurance, and lack of timely referral. The most consistently identified supports needed from the hospital system for success in underserved populations were the provision of a solution for patient transportation to and from hospital visits and the provision of financial support. This survey highlights the challenges facing LVAD programs that care for underserved patient populations and sets the stage for specific interventions aimed at reducing disparities in access to care.
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Real-World Effectiveness of High-Dose Tafamidis on Neurologic Disease Progression in Mixed-Phenotype Variant Transthyretin Amyloid Cardiomyopathy. Cardiol Ther 2024; 13:359-368. [PMID: 38521883 PMCID: PMC11093936 DOI: 10.1007/s40119-024-00362-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2023] [Accepted: 02/21/2024] [Indexed: 03/25/2024] Open
Abstract
INTRODUCTION Transthyretin amyloidosis (ATTR) is a progressive, heterogeneous rare disease manifesting as ATTR polyneuropathy (ATTR-PN), ATTR cardiomyopathy (ATTR-CM), or a mixed phenotype. Tafamidis meglumine (20 mg po qd) is approved in some markets to delay neurologic progression in ATTR-PN, while high-dose tafamidis (80/61 mg po qd) is approved worldwide to reduce cardiovascular mortality and cardiovascular-related hospitalization in ATTR-CM. The objective of this study was to assess the real-world benefit of high-dose tafamidis for delaying neurologic progression in patients with mixed-phenotype variant ATTR-CM (ATTRv-CM). METHODS This exploratory, retrospective, observational cohort study evaluated anonymized electronic medical records and included adult patients with mixed-phenotype ATTRv-CM treated with high-dose tafamidis for at least 6 months. Neurologic assessments included the Medical Research Council (MRC) Scale for Muscle Strength, Neuropathy Impairment Score (NIS) muscle weakness subscale, and Polyneuropathy Disability (PND) instrument. Modified body mass index (mBMI) was also assessed. RESULTS Patients (N = 10) started tafamidis treatment an average of 3.8 months after diagnosis, with an average treatment duration of 20.8 months. Seven of 10 patients demonstrated normal muscle strength on the MRC scale throughout the study, and 9 of 10 patients had no decline in muscle strength during the post-treatment period. The NIS muscle weakness subscale score was ≤ 60 for all patients in the study at all time points, suggesting normal function to mild impairment. Six of 10 patients had no change in walking capacity as measured by the PND instrument at pre- and post-assessments, while one-third of patients had a decrease in PND stage (signaling improvement) from pre- to post-assessment. mBMI remained relatively stable throughout the study. CONCLUSION This is the first real-world study to demonstrate the potential value of high-dose tafamidis for delaying neurologic disease progression in patients with mixed-phenotype ATTRv-CM. The findings underscore the importance of multidisciplinary assessment for patients with ATTR amyloidosis. TRIAL REGISTRATION ClinicalTrials.gov: NCT05139680.
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Transthyretin Cardiac Amyloidosis: Increasing Evidence of the Benefits of A TTRansformation in Diagnostic and Treatment Strategies. J Card Fail 2024:S1071-9164(24)00184-2. [PMID: 38782086 DOI: 10.1016/j.cardfail.2024.04.026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2024] [Accepted: 04/22/2024] [Indexed: 05/25/2024]
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The Cardiac Amyloidosis Registry Study (CARS): Rationale, Design and Methodology. J Card Fail 2024; 30:669-678. [PMID: 37907148 DOI: 10.1016/j.cardfail.2023.09.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Revised: 09/19/2023] [Accepted: 09/28/2023] [Indexed: 11/02/2023]
Abstract
BACKGROUND CARS (Cardiac Amyloidosis Registry Study) is a multicenter registry established in 2019 that includes patients with transthyretin (ATTR, wild-type and variant) and light chain (AL) cardiac amyloidosis (CA) evaluated at major amyloidosis centers between 1997 and 2025. CARS aims to describe the natural history of CA with attention to clinical and diagnostic variables at the time of diagnosis, real-world treatment patterns, and associated outcomes of patients in a diverse cohort that is more representative of the at-risk population than that described in CA clinical trials. METHODS AND RESULTS This article describes the design and methodology of CARS, including procedures for data collection and preliminary results. As of February 2023, 20 centers in the United States enrolled 1415 patients, including 1155 (82%) with ATTR and 260 (18%) with AL CA. Among those with ATTR, wild-type is the most common ATTR (71%), and most of the 305 patients with variant ATTR have the p.V142I mutation (68%). A quarter of the total population identifies as Black. More individuals with AL are female (39%) compared to those with ATTR (13%). CONCLUSIONS CARS will answer crucial clinical questions about CA natural history and permit comparison of different therapeutics not possible through current clinical trials. Future international collaboration will further strengthen the validity of observations of this increasingly recognized condition.
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Surveillance Imaging and Management of Cardiac Sarcoidosis After Advanced Heart Failure Therapies. Am J Cardiol 2024; 222:35-38. [PMID: 38663574 DOI: 10.1016/j.amjcard.2024.04.033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/16/2024] [Revised: 04/20/2024] [Accepted: 04/20/2024] [Indexed: 05/07/2024]
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A multicenter evaluation of the HeartMate 3 risk score. J Heart Lung Transplant 2024; 43:626-632. [PMID: 38061468 DOI: 10.1016/j.healun.2023.11.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2023] [Revised: 11/16/2023] [Accepted: 11/30/2023] [Indexed: 01/30/2024] Open
Abstract
BACKGROUND The Heartmate 3 (HM3) risk score (HM3RS) was derived and validated internally from within the Multicenter Study of MagLev Technology in Patients Undergoing Mechanical Circulatory Support Therapy with HeartMate 3 (MOMENTUM 3) trial population and provides 1- and 2-year mortality risk prediction for patients in those before HM3 left ventricular assist device (LVAD) implantation. We aimed to evaluate the HM3RS in nontrial unselected patients, including those not meeting inclusion criteria for MOMENTUM 3 trial enrollment. METHODS Patients who underwent HM3 LVAD implant at 1 of 7 US centers between 2017 and 2021, with at least 1-year follow-up, were included in this analysis. Patients were retrospectively assessed for their eligibility for the MOMENTUM 3 trial based on study inclusion and exclusion criteria. HM3RS risk discrimination was evaluated using time-dependent receiver operating characteristic curve analysis for 1-year mortality for all patients and further stratified by MOMENTUM 3 trial eligibility. Kaplan-Meier curves were constructed using the HM3RS-based risk categories. RESULTS Of 521 patients included in the analysis, 266 (51.1%) would have met enrollment criteria for MOMENTUM 3. The 1- and 2-year survival for the total cohort was 85% and 81%, respectively. There was no statistically significant difference in survival between those who met and did not meet enrollment criteria at 1 (87% vs 83%; p = 0.21) and 2 years postimplant (80% vs 78%; p = 0.39). For the total cohort, HM3RS predicted 1-year survival with an area under the curve (AUC) of 0.63 (95% confidence interval [CI]: 0.57-0.69, p < 0.001). HM3RS performed better in the subset of patients meeting enrollment criteria: AUC 0.69 (95% CI:0.61-0.77, p < 0.001) compared to the subset that did not: AUC 0.58 (95% CI: 0.49-0.66, p = 0.078). CONCLUSIONS In this real-world evidence, multicenter cohort, 1- and 2-year survival after commercial HM3 LVAD implant was excellent, regardless of trial eligibility. The HM3RS provided adequate risk discrimination in "trial-like" patients, but predictive value was reduced in patients who did not meet trial criteria.
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The role of palliative care for patients with left ventricular assist devices: a narrative review. ANNALS OF PALLIATIVE MEDICINE 2024; 0:apm-23-551. [PMID: 38462933 DOI: 10.21037/apm-23-551] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/12/2024]
Abstract
BACKGROUND AND OBJECTIVE Left ventricular assist devices (LVADs) have revolutionized the care of patients with advanced heart failure (HF). Compared to guideline-directed medical and device therapies, LVAD technology improves quality of life and reduces mortality. Palliative care specialists have an important role to play in the pre-LVAD evaluation phase, in the post-operative longitudinal care phase, and at the endof-life in patients with LVADs. The objective of this narrative review is to describe the evidence regarding the role of palliative care for patients with LVAD across the care continuum: pre-implantation, postimplantation, and at the end-of-life. METHODS Clinical trials relevant to care of patients with HF, LVADs, and the role of palliative care were analyzed for this narrative review. KEY CONTENT AND FINDINGS Palliative care involvement in 'preparedness planning' has been described in the literature, though no standardized protocol for preparedness planning exists, to date. In the longitudinal care phase after LVAD implantation, the role of palliative care is less defined; depending on institutional culture and availability of palliative care, patients may be referred based on symptom-management needs or for advance care planning (ACP). At the end-of-life, either due to an acute event or a gradually worsening condition, palliative care is often engaged to participate in discussions regarding treatment preferences and to consider transitions in care from disease-directed treatments to comfort-focused treatments. Given the medical complexity of dying with LVADs, most patients with an LVAD die in hospital with support from palliative care teams for the physical, existential, and psychosocial distress that accompanies end-of-life and LVAD deactivation. CONCLUSIONS In this narrative review, we describe the integral role of palliative care throughout the care continuum of patients living with LVADs and suggest opportunities for further research.
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Benefits and Harms of Continuous Intravenous Inotropic Support as Palliative Therapy: A Single-Institution, Retrospective Analysis. Am J Hosp Palliat Care 2024; 41:50-55. [PMID: 36812883 DOI: 10.1177/10499091231160162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/24/2023] Open
Abstract
Use of continuous intravenous inotropic support (CIIS) strictly as palliative therapy for patients with ACC/AHA Stage D (end-stage) Heart Failure (HF) has increased significantly. The harms of CIIS therapy may detract from its benefits. To describe benefits (improvement in NYHA functional class) and harms (infection, hospitalization, days-spent-in-hospital) of CIIS as palliative therapy. Methods: Retrospective analysis of patients with end-stage HF initiated on CIIS as palliative therapy at an urban, academic center in the United States between 2014-2016. Clinical outcomes were extracted, and data were analyzed using descriptive statistics. Seventy-five patients, 72% male, 69% African American/Black, with a mean age 64.5 years (SD = 14.5) met study criteria. Mean duration of CIIS was 6.5 months (SD = 7.7). Most patients (69.3%) experienced improvement in NYHA functional class from class IV to class III. Sixty-seven patients (89.3%) were hospitalized during their time on CIIS, with a mean of 2.7 hospitalizations per patient (SD = 3.3). One-third of patients (n = 25) required at least one intensive care unit (ICU) admission while on CIIS therapy. Eleven patients (14.7%) experienced catheter-related blood stream infection. Patients spent an average of 20.6% (SD = 22.8), approximately 40 days, of their time on CIIS admitted to the study institution. Patients on CIIS as palliative therapy report improvement in functional class, survive 6.5 months following initiation, but spend a significant number of days in the hospital. Prospective studies quantifying the symptomatic benefit and the direct and indirect harms of CIIS as palliative therapy are warranted.
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Early Ventricular Arrhythmias After Left Ventricular Assist Device Implantation. J Card Fail 2023:S1071-9164(23)00912-0. [PMID: 38103723 DOI: 10.1016/j.cardfail.2023.11.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Revised: 11/14/2023] [Accepted: 11/14/2023] [Indexed: 12/19/2023]
Abstract
BACKGROUND Although sustained ventricular arrhythmias (VAs) are a common complication after durable left ventricular assist device (LVAD) implantation, the incidence, risk factors, and prognostic implications of postoperative early VAs (EVAs) in contemporary patients with LVAD are poorly understood. METHODS AND RESULTS A single-center retrospective analysis was performed of patients who underwent LVAD implantation from October 1, 2006, to October 1, 2022. EVA was defined as an episode of sustained VA identified ≤30 days after LVAD implantation. A total of 789 patients underwent LVAD implantation (mean age 62.9 ± 0. years 5, HeartMate 3 41.4%, destination therapy 43.3%). EVAs occurred in 100 patients (12.7%). A history of end-stage renal disease (odds ratio [OR] 5.6, 95% confidence interval [CI] 1.45-21.70), preoperative electrical storm (OR 2.82, 95% CI 1.11-7.16), and appropriate implantable cardiac defibrillator therapy before implantation (OR 2.8, 95% CI 1.26-6.19) are independently associated with EVAs. EVA was associated with decreased 30-day survival (hazard ratio 3.02, 95% CI 1.1-8.3, P = .032). There was no difference in transplant-free survival time between patients with and without EVAs (hazard ratio 0.82, 95% CI 0.5-1.4, P = .454). CONCLUSIONS EVAs are common after durable LVAD implantation and are associated with an increased risk of 30-day mortality.
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Aspirin and Hemocompatibility Events With a Left Ventricular Assist Device in Advanced Heart Failure: The ARIES-HM3 Randomized Clinical Trial. JAMA 2023; 330:2171-2181. [PMID: 37950897 PMCID: PMC10640705 DOI: 10.1001/jama.2023.23204] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Accepted: 10/24/2023] [Indexed: 11/13/2023]
Abstract
IMPORTANCE Left ventricular assist devices (LVADs) enhance quality and duration of life in advanced heart failure. The burden of nonsurgical bleeding events is a leading morbidity. Aspirin as an antiplatelet agent is mandated along with vitamin K antagonists (VKAs) with continuous-flow LVADs without conclusive evidence of efficacy and safety. OBJECTIVE To determine whether excluding aspirin as part of the antithrombotic regimen with a fully magnetically levitated LVAD is safe and decreases bleeding. DESIGN, SETTING, and PARTICIPANTS This international, randomized, double-blind, placebo-controlled study of aspirin (100 mg/d) vs placebo with VKA therapy in patients with advanced heart failure with an LVAD was conducted across 51 centers with expertise in treating patients with advanced heart failure across 9 countries. The randomized population included 628 patients with advanced heart failure implanted with a fully magnetically levitated LVAD (314 in the placebo group and 314 in the aspirin group), of whom 296 patients in the placebo group and 293 in the aspirin group were in the primary analysis population, which informed the primary end point analysis. The study enrolled patients from July 2020 to September 2022; median follow-up was 14 months. Intervention Patients were randomized in a 1:1 ratio to receive aspirin (100 mg/d) or placebo in addition to an antithrombotic regimen. MAIN OUTCOMES AND MEASURES The composite primary end point, assessed for noninferiority (-10% margin) of placebo, was survival free of a major nonsurgical (>14 days after implant) hemocompatibility-related adverse events (including stroke, pump thrombosis, major bleeding, or arterial peripheral thromboembolism) at 12 months. The principal secondary end point was nonsurgical bleeding events. RESULTS Of the 589 analyzed patients, 77% were men; one-third were Black and 61% were White. More patients were alive and free of hemocompatibility events at 12 months in the placebo group (74%) vs those taking aspirin (68%). Noninferiority of placebo was demonstrated (absolute between-group difference, 6.0% improvement in event-free survival with placebo [lower 1-sided 97.5% CI, -1.6%]; P < .001). Aspirin avoidance was associated with reduced nonsurgical bleeding events (relative risk, 0.66 [95% confidence limit, 0.51-0.85]; P = .002) with no increase in stroke or other thromboembolic events, a finding consistent among diverse subgroups of patient characteristics. CONCLUSIONS AND RELEVANCE In patients with advanced heart failure treated with a fully magnetically levitated LVAD, avoidance of aspirin as part of an antithrombotic regimen, which includes VKA, is not inferior to a regimen containing aspirin, does not increase thromboembolism risk, and is associated with a reduction in bleeding events. TRIAL REGISTRATION ClinicalTrials.gov Identifier: NCT04069156.
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Great mimicker: definite isolated cardiac sarcoidosis masquerading as hypertrophic cardiomyopathy. BMJ Case Rep 2023; 16:e256579. [PMID: 38087480 PMCID: PMC10728929 DOI: 10.1136/bcr-2023-256579] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2023] Open
Abstract
A healthy man in his 50s was hospitalised after presenting with chest pain and dyspnoea. An echocardiogram revealed asymmetrical septal hypertrophy, leading to a diagnosis of hypertrophic cardiomyopathy. Due to progressive conduction abnormalities during his hospitalisation, further evaluation was performed. Cardiac MRI revealed dense late gadolinium enhancement of the septum in the area of hypertrophy. Additionally, fluorodeoxyglucose-positron emission tomography demonstrated increased uptake within the same region, suggestive of active inflammation. Subsequent endomyocardial biopsy showed non-caseating granulomatous inflammation, consistent with cardiac sarcoidosis. Treatment with prednisone and methotrexate was initiated, and an implantable cardioverter-defibrillator was placed following thorough risk stratification. This case highlights the importance of multimodality imaging and the pursuit of a tissue diagnosis in the evaluation of cardiomyopathy.
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Predictors and Outcomes of Sudden Cardiac Arrest in Heart Failure With Preserved Ejection Fraction: A Nationwide Inpatient Sample Analysis. Am J Cardiol 2023; 206:277-284. [PMID: 37725853 DOI: 10.1016/j.amjcard.2023.08.145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/21/2023] [Revised: 08/21/2023] [Accepted: 08/21/2023] [Indexed: 09/21/2023]
Abstract
Sudden cardiac arrest (SCA) is the leading cause of cardiovascular mortality in heart failure with preserved ejection fraction (HFpEF), contributing to around 25% of deaths observed in pivotal HFpEF trials. However, predictors and outcomes of in-hospital SCA in HFpEF have not been well characterized. We queried the Nationwide Inpatient Sample (2016 to 2017) to identify adult hospitalizations with a diagnosis of HFpEF. Patients with acute or chronic conditions associated with SCA (e.g., acute myocardial infarction, acute pulmonary embolism, sarcoidosis) were excluded. We ascertained whether SCA occurred during these hospitalizations, identified predictors of SCA using multivariate logistic regression, and determined outcomes of SCA in HFpEF. Of 2,909,134 hospitalizations, SCA occurred in 1.48% (43,105). The mean age of the SCA group was 72.3 ± 12.4 years, 55.8% were women, and 66.4% were White. Presence of third-degree atrioventricular block (odds ratio [OR] 5.95, 95% confidence interval [CI] 5.31 to 6.67), left bundle branch block (OR 1.96, 95% CI 1.72 to 2.25), and liver disease (OR 1.87, 95% CI 1.73 to 2.02) were the leading predictors of SCA in HFpEF. After excluding patients with do-not-resuscitate status, the SCA group versus those without SCA had higher mortality (25.9% vs 1.6%), major bleeding complications (4.1% vs 1.7%), increased use of percutaneous coronary intervention (2.5% vs 0.7%), and mechanical circulatory assist device (1.2% vs 0.1%). These observational inpatient data suggest identifiable risk factors for SCA in HFpEF including cardiac arrhythmias. Further research is warranted to identify the best tools to risk-stratify patients with HFpEF to implement targeted SCA prevention strategies.
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Clinical Protocol for Left Ventricular Assist Device Deactivation at End of Life. J Palliat Med 2023; 26:1428-1434. [PMID: 37219893 DOI: 10.1089/jpm.2023.0176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/24/2023] Open
Abstract
As patients live longer with left ventricular assist device (LVAD) support, many will either suffer an acute event or develop a gradual, progressive disease that results in a terminal prognosis. At the end-of-life, patients, and more often, their families, will be faced with the decision to deactivate the LVAD to allow natural death. The process of LVAD deactivation carries some distinct features that distinguish it from withdrawal of other forms of life-sustaining medical technology: multidisciplinary collaboration is paramount; prognosis after deactivation is short, typically minutes-hours; and premedication doses of symptom-focused medications are typically higher than other situations involving withdrawal of life-sustaining medical technologies given the precipitous decline in cardiac output following LVAD deactivation. In this Case Discussion, we introduce the complexity of planned in-hospital LVAD deactivation through a clinical case, share our detailed institutional checklist and order set for LVAD deactivation, and broach multidisciplinary clinical protocol development processes.
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Stable Ventricular Fibrillation: A Paradigm Rather Than Septal Shift? ASAIO J 2023; 69:835-840. [PMID: 37651097 DOI: 10.1097/mat.0000000000001984] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/01/2023] Open
Abstract
Awake patients in ventricular fibrillation is a phenomenon limited to patients who are mechanically supported. We describe a cohort of patients supported by left ventricular assist devices (LVADs) presenting to the emergency department (ED) at a high-volume LVAD center while in awake ventricular fibrillation (VF)/ventricular tachycardia (VT). Among 175 patients reviewed, a total of 19 LVAD patients presented to the ED in awake VF/VT between December 2015 and July 2021. On ED presentation, patients maintained a median mean arterial blood pressure (MAP) of 70 mm Hg with a mean LVAD flow of 3.77 L/minute. ED management included cardioversion in the majority of cases: 58% were defibrillated once, 21% were defibrillated multiple times, 68% received amiodarone, and 21% received lidocaine. Inpatient management included defibrillation, ablation, and antiarrhythmic initiation in 37%, 11%, and 84% of cases, respectively. In total, five patients (26%) died with one death attributed to recurrent VT. Our findings support the short-term tolerability of sustained ventricular arrhythmias in LVAD patients, as evidenced by the maintained MAPs and mental status. Clinical teams, however, should be aware of the potential harbinger for in-hospital mortality heralded by an awake VF/VT presentation.
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Exploring Race and Sex Differences in Cardiac Sarcoidosis: "Dispare" no More. J Card Fail 2023; 29:1146-1149. [PMID: 37354943 DOI: 10.1016/j.cardfail.2023.06.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Accepted: 06/14/2023] [Indexed: 06/26/2023]
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Renin-Angiotensin Inhibition and Outcomes in HFrEF and Advanced Kidney Disease. Am J Med 2023; 136:677-686. [PMID: 37019372 PMCID: PMC10466279 DOI: 10.1016/j.amjmed.2023.03.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/23/2022] [Revised: 01/18/2023] [Accepted: 03/08/2023] [Indexed: 04/07/2023]
Abstract
BACKGROUND Renin-angiotensin system inhibitors improve outcomes in patients with heart failure with reduced ejection fraction (HFrEF). However, less is known about their effectiveness in patients with HFrEF and advanced kidney disease. METHODS In the Medicare-linked Organized Program to Initiate Lifesaving Treatment in Hospitalized Patients with Heart Failure (OPTIMIZE-HF), 1582 patients with HFrEF (ejection fraction ≤40%) had advanced kidney disease (estimated glomerular filtration rate <30 mL/min/1.73 m2). Of these, 829 were not receiving angiotensin-converting enzyme (ACE) inhibitors or angiotensin receptor blockers (ARBs) prior to admission, of whom 214 were initiated on these drugs prior to discharge. We calculated propensity scores for receipt of these drugs for each of the 829 patients and assembled a matched cohort of 388 patients, balanced on 47 baseline characteristics (mean age 78 years; 52% women; 10% African American; 73% receiving beta-blockers). Hazard ratios (HR) and 95% confidence intervals (CI) were estimated comparing 2-year outcomes in 194 patients initiated on ACE inhibitors or ARBs to 194 patients not initiated on those drugs. RESULTS The combined endpoint of heart failure readmission or all-cause mortality occurred in 79% and 84% of patients initiated and not initiated on ACE inhibitors or ARBs, respectively (HR associated with initiation, 0.79; 95% CI, 0.63-0.98). Respective HRs (95% CI) for the individual endpoints of - Respective HRs (95% CI) for the individual endpoints of all-cause mortality and heart failure readmission were 0.81 (0.63-1.03) and 0.63 (0.47-0.85). CONCLUSIONS The findings from our study add new information to the body of cumulative evidence that suggest that renin-angiotensin system inhibitors may improve clinical outcomes in patients with HFrEF and advanced kidney disease. These hypothesis-generating findings need to be replicated in contemporary patients.
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Guideline-Directed Medical Therapy for the Treatment of Heart Failure with Reduced Ejection Fraction. Drugs 2023; 83:747-759. [PMID: 37254024 DOI: 10.1007/s40265-023-01887-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/01/2023] [Indexed: 06/01/2023]
Abstract
Guideline-directed medical therapy (GDMT) is the cornerstone of pharmacological therapy for patients with heart failure with reduced ejection fraction (HFrEF) and consists of the four main drug classes: renin-angiotensin system inhibitors, evidence-based β-blockers, mineralocorticoid inhibitors and sodium glucose cotransporter 2 inhibitors. The recommendation for use of GDMT is based on the results of multiple major randomized controlled trials demonstrating improved clinical outcomes in patients with HFrEF who are maintained on this therapy. The effect is most beneficial when medications from the four main drug classes are used in conjunction. Despite this, there is an underutilization of GDMT, partially due to lack of awareness of how to safely and effectively initiate and titrate these medications. In this review article, we describe the different drug classes included in GDMT and offer an approach to initiation and effective titration in both the inpatient as well as outpatient setting.
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Phenotypes Associated With the Val122Ile, Leu58His, and Late-Onset Val30Met Variants in Patients With Hereditary Transthyretin Amyloidosis. Neurology 2023; 100:e2036-e2044. [PMID: 36941075 PMCID: PMC10186220 DOI: 10.1212/wnl.0000000000207158] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Accepted: 01/20/2023] [Indexed: 03/23/2023] Open
Abstract
BACKGROUND AND OBJECTIVES Hereditary transthyretin amyloidosis (hATTR) is a rare autosomal dominant systemic disease with variable penetrance and heterogeneous clinical presentation. Several effective treatments can reduce mortality and disability, though diagnosis remains challenging, especially in the United States where disease is nonendemic. Our aim is to describe the neurologic and cardiac characteristics of common US ATTR variants V122I, L58H, and late-onset V30M at presentation. METHODS We conducted a retrospective case series of patients with a new diagnosis of ATTRv between January 2008 and January 2020 to characterize features of prominent US variants. The neurologic (examination, EMG, and skin biopsy), cardiac (echo), and laboratory assessments (pro b-type natriuretic peptide [proBNP] and reversible neuropathy screens) are described. RESULTS A total of 56 patients with treatment-naïve ATTRv with symptoms/signs of peripheral neuropathy (PN) or cardiomyopathy and confirmatory genetic testing presenting with Val122Ile (N = 31), late-onset Val30Met (N = 12), and Leu58His ATTRv (N = 13) were included. The age at onset and sex distributions were similar (V122I: 71.5 ± 8.0, V30M: 64.8 ± 2.6, and L58H: 62.4 ± 9.8 years; 26, 25, 31% female). Only 10% of patients with V122I and 17% of patients with V30M were aware of an ATTRv family history, while 69% of patients with L58H were aware. PN was present in all 3 variants at diagnosis (90%, 100%, and 100%), though neurologic impairment scores differed: V122I: 22 ± 16, V30M: 61 ± 31, and L58H: 57 ± 25. Most points (deficits) were attributed to loss of strength. Carpal tunnel syndrome (CTS) and a positive Romberg sign were common across all groups (V122I: 97%, 39%; V30M: 58%, 58%; and L58H: 77%, 77%). ProBNP levels and interventricular septum thickness were highest among patients with V122I (5,939 ± 962 pg/mL, 1.70 ± 0.29 cm), followed by V30M (796 ± 970 pg/mL, 1.42 ± 0.38 cm) and L58H (404 ± 677 pg/mL, 1.23 ± 0.36 cm). Atrial fibrillation was present among 39% of cases with V122I and only 8% of cases with V30M and L58H. Gastrointestinal symptoms were rare (6%) among patients with V122I and common in patients with V30M (42%) and L58H (54%). DISCUSSION Important clinical differences exist between ATTRv genotypes. While V122I is perceived to be a cardiac disease, PN is common and clinically relevant. Most patients with V30M and V122I were diagnosed de novo and therefore require clinical suspicion for diagnosis. A history of CTS and a positive Romberg sign are helpful diagnostic clues.
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2023 ACC Expert Consensus Decision Pathway on Comprehensive Multidisciplinary Care for the Patient With Cardiac Amyloidosis: A Report of the American College of Cardiology Solution Set Oversight Committee. J Am Coll Cardiol 2023; 81:1076-1126. [PMID: 36697326 DOI: 10.1016/j.jacc.2022.11.022] [Citation(s) in RCA: 78] [Impact Index Per Article: 78.0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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PREDICTORS AND OUTCOMES OF SUDDEN CARDIAC ARREST IN HEART FAILURE WITH PRESERVED EJECTION FRACTION, A NATIONWIDE INPATIENT SAMPLE ANALYSIS. J Am Coll Cardiol 2023. [DOI: 10.1016/s0735-1097(23)01058-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
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UNMASKING CARDIAC SARCOIDOSIS IN PREGNANCY. J Am Coll Cardiol 2023. [DOI: 10.1016/s0735-1097(23)03068-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
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GENDER VARIATION IN CLINICAL OUTCOMES IN PATIENTS WITH ACUTE MYOCARDIAL INFARCTION AND CARDIOGENIC SHOCK: ANALYSIS FROM LARGE US HEALTHCARE SYSTEM. J Am Coll Cardiol 2023. [DOI: 10.1016/s0735-1097(23)01571-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
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VENTRICULAR ARRHYTHMIAS IN END-STAGE HEART FAILURE PATIENTS ON AMBULATORY INOTROPIC THERAPY. J Am Coll Cardiol 2023. [DOI: 10.1016/s0735-1097(23)00896-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
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GIANT CELL MYOCARDITIS: A STRAIGHTFORWARD DIAGNOSIS? J Am Coll Cardiol 2023. [DOI: 10.1016/s0735-1097(23)03937-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
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Effects of Body Mass Index on Presentation and Outcomes of COVID-19 among Heart Transplant and Left Ventricular Assist Device Patients: A Multi-Institutional Study. ASAIO J 2023; 69:43-49. [PMID: 36583770 PMCID: PMC9797121 DOI: 10.1097/mat.0000000000001801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
The coronavirus disease 2019 (COVID-19) pandemic continues to pose a significant threat to patients receiving advanced heart failure therapies. The current study was undertaken to better understand the relationship between obesity and outcomes of SARS-CoV-2 infection in patients with a left ventricular assist device (LVAD) or heart transplant. We performed a retrospective review of patients with a heart transplant or LVAD who presented to one of the participating 11 institutions between April 1 and November 30, 2020. Patients were grouped by body mass index (BMI) into obese (BMI ≥ 30 k/m2) and nonobese cohorts (BMI < 30 kg/m2). Multivariable logistic regression models were used to estimate effects of obesity on outcomes of interest. Across all centers, 162 heart transplant and 81 LVAD patients were identified; 54 (33%) and 38 (47%) were obese, respectively. Obese patients tended to have more symptoms at presentation. No differences in rates of hospitalization or ICU admission were noted. Obese patients with LVADs were more likely to require mechanical ventilation (39% vs. 8%, p < 0.05). No differences in renal failure or secondary infection were noted. Mortality was similar among heart transplant patients (11% [obese] vs. 16% [nonobese], p = 0.628) and LVAD patients (12% vs. 15%, p = 1.0). BMI was not associated with increased adjusted odds of mortality, ICU admission, or mechanical ventilation (all p > 0.10). In summary, acute presentations of SARS-CoV-2 among heart transplant and LVAD recipients carry a significantly higher mortality than the general population, although BMI does not appear to impact this. Further studies on the longer-term effects of COVID-19 on this population are warranted.
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Feasibility of Mediastinal Radiation Use in HeartMate 3 LVAD Recipients with Cancer. Methodist Debakey Cardiovasc J 2023; 19:15-19. [PMID: 36742441 PMCID: PMC9881437 DOI: 10.14797/mdcvj.1115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Accepted: 11/23/2022] [Indexed: 01/25/2023] Open
Abstract
The HeartMate 3 left ventricular assist device possesses the unique feature of having its electronics and software located within the housing of the pump, which may predispose it to malfunction from radiation exposure during cancer treatment. We investigated this association in a case series of two patients at our institution.
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Nontuberculous Mycobacterial Infections Associated With Left Ventricular Assist Devices in 3 Patients. Tex Heart Inst J 2022; 49:483734. [PMID: 35838643 DOI: 10.14503/thij-20-7498] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Durable left ventricular assist devices (LVADs) provide circulatory support in patients with end-stage heart failure; however, complications include infection of the driveline exit site. Nontuberculous mycobacterial infections are rare in patients with LVADs, but they should be considered in those who have undergone device exchanges and have bacterial infections with driveline exit-site discharge but no fever or leukocytosis. We reviewed the charts of patients who had an LVAD implanted at our institution from January 2009 through December 2019, to identify those with a device-related nontuberculous mycobacterial infection. Collected data included patient demographics, premorbid conditions, infection type, previous device complications, treatment, and outcomes. We identified infections in 3 patients (mean age, 41 yr): Mycobacterium abscessus in 2 and M. chimaera in 1. All had a HeartMate II device and had undergone device exchanges for pump thrombosis or for driveline fault or infections. All presented with driveline exit-site discharge without fever or leukocytosis. The mean time between initial device implantation and diagnosis of a nontuberculous mycobacterial infection was 55 months. All 3 patients were treated with antibiotics and underwent localized surgical débridement; one underwent an additional device exchange. The M. abscessus infections disseminated, and both patients died; the patient with M. chimaera infection continued to take suppressive antibiotics. Nontuberculous mycobacterial infections are associated with high morbidity and mortality rates, warranting prompt diagnosis and treatment.
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Bridge to nowhere: A retrospective single-center study on patients using chronic intravenous inotropic support as bridge therapy who do not receive surgical therapy. Front Cardiovasc Med 2022; 9:918146. [PMID: 36110411 PMCID: PMC9468486 DOI: 10.3389/fcvm.2022.918146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Accepted: 08/15/2022] [Indexed: 11/13/2022] Open
Abstract
Background Many patients with advanced heart failure (HF) are administered chronic intravenous inotropic support (CIIS) as bridge to surgical therapy; some ultimately never receive surgery. We aimed to describe reasons patients “crossover” from CIIS as bridge therapy to palliative therapy, and compare end-of-life outcomes to patients initiated on CIIS as palliative therapy. Methods Single-institution, retrospective cohort study of patients on CIIS as bridge or palliative therapy between 2010 and 2016; data obtained through review of health records and multi-disciplinary selection meeting minutes, was analyzed using descriptive and inferential statistics. Results Of 246 patients discharged on CIIS as bridge therapy, 37 (16%) (male n = 28, 76%; African American n = 22, 60%) ultimately never received surgery. 67 matched patients on CIIS as palliative therapy were included for analysis (male n = 47, 70%; African American n = 47, 70%). The most common reasons for “crossover” from CIIS as bridge therapy to palliative therapy were frailty (n = 10, 27%), cardiac arrest (n = 5, 13.5%), and progressive non-cardiac illnesses (n = 6, 16.2%). A similar percentage of patients in the bridge (n = 28, 76%) and palliative (n = 48, 72%) groups died outside the hospital (P=0.66); however, fewer bridge patients received hospice care compared to the palliative group (35% vs 69%, P < 0.001). Comparing patients who died in the hospital, bridge patients (n = 9; 100%) were more likely to die in the intensive care unit than palliative patients (n = 8; 42%) (P < 0.001). Conclusion Patients on CIIS as bridge therapy who do not ultimately receive surgical therapy “crossover” to palliative intention due to frailty, or development of or identification of serious illnesses. Nevertheless, these “bridge to nowhere” patients are less likely to receive palliative care or hospice and more likely to die in the intensive care unit than patients on CIIS as palliative therapy.
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Atrial Fibrillation and Cardiac Sarcoidosis. JACC Cardiovasc Imaging 2022; 15:1632-1634. [DOI: 10.1016/j.jcmg.2022.06.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Accepted: 06/21/2022] [Indexed: 11/28/2022]
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Comparison of Patterns of Coronary Artery Disease in Patients With Heart Failure by Cardiac Sarcoidosis Status. CARDIOVASCULAR REVASCULARIZATION MEDICINE 2022. [DOI: 10.1016/j.carrev.2022.06.105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Initiation of anti-hypertensive drugs and outcomes in patients with heart failure with preserved ejection fraction and persistent hypertension. Prog Cardiovasc Dis 2022; 73:17-23. [PMID: 35777433 DOI: 10.1016/j.pcad.2022.06.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/25/2022] [Accepted: 06/25/2022] [Indexed: 11/30/2022]
Abstract
BACKGROUND National heart failure (HF) guidelines recommend that in patients with HF with preserved ejection fraction (EF;HFpEF) and hypertension, systolic blood pressure (SBP) should be maintained below 130 mmHg. The objective of the study is to examine the association between initiation of anti-hypertensive drugs and outcomes in patients with HFpEF with persistent hypertension. METHODS Of the 8873 hospitalized patients with HFpEF (EF ≥50%) with a history of hypertension without renal failure in Medicare-linked OPTIMIZE-HF, 3315 had a discharge SBP ≥130 mmHg, of whom 1971 were not receiving anti-hypertensive drugs, thiazides and calcium channel blockers, before hospitalization. Of these, 366 received discharge prescriptions for those drugs. We assembled a propensity score-matched cohort of 365 pairs of patients initiated and not initiated on anti-hypertensive drugs, balanced on 37 baseline characteristics. Hazard ratios (HR) and 95% confidence intervals (CI) for outcomes associated with anti-hypertensive drug initiation were estimated in the matched cohort. RESULTS Matched patients (n = 730) had a mean age of 78 years; 67% were women and 17% African Americans. During 6 (median 2.5) years of follow-up, 66% of the patients died and 45% had HF readmission. HRs (95% CIs) for all-cause mortality at 30 days, 12 months and 6 years associated with anti-hypertensive drug initiation were 0.64 (0.30-1.36), 0.70 (0.51-0.97), and 0.95 (0.79-1.13), respectively. Respective HRs (95% CIs) for HF readmission were 1.65 (0.97-2.80), 1.18 (0.90-1.56) and 1.09 (0.88-1.35). CONCLUSIONS Among hospitalized older patients with HFpEF with uncontrolled hypertension, the initiation of therapy with anti-hypertensive drugs was not associated with all-cause mortality or hospital readmission.
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Initiation of Anti-Hypertensive Drugs and Outcomes in Patients with Heart Failure with Reduced Ejection Fraction. Am J Med 2022; 135:737-744. [PMID: 34861194 DOI: 10.1016/j.amjmed.2021.11.012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Accepted: 11/03/2021] [Indexed: 12/15/2022]
Abstract
BACKGROUND In patients with heart failure with reduced ejection fraction (HFrEF) and hypertension, systolic blood pressure is recommended to be maintained below 130 mmHg, although this has not been shown to be associated with improved outcomes. We examined the association between anti-hypertensive drug initiation and outcomes in patients with HFrEF. METHODS In the Medicare-linked OPTIMIZE-HF, 7966 patients with HFrEF (ejection fraction ≤40%) without renal failure were not receiving anti-hypertensive drugs before hospitalization, of whom 692 received discharge prescriptions for those drugs (thiazides and calcium channel blockers). We assembled a propensity score-matched cohort of 687 pairs of patients initiated and not initiated on anti-hypertensive drugs, balanced on 38 baseline characteristics. Hazard ratios (HR) and 95% confidence intervals (CIs) for outcomes associated with anti-hypertensive drug initiation were estimated in the matched cohort. RESULTS Matched patients (n = 1374) had a mean age of 74 years, 41% were female, 17% were African-American, 66% were discharged on renin-angiotensin system inhibitors and beta blockers, and 10% on aldosterone antagonists. During 6 (median 2.5) years of follow-up, 70% of the patients died and 53% had heart failure readmission. Anti-hypertensive drug initiation was not significantly associated with all-cause mortality (HR, 0.95; 95% CI, 0.83-1.07) or heart failure readmission (HR, 0.93; 95% CI, 0.80-1.07). Similar associations were observed during 30 days and 12 months of follow-up. CONCLUSIONS Among hospitalized older patients with HFrEF receiving contemporary treatments for heart failure, initiation of an anti-hypertensive drug was not associated with a lower risk of all-cause mortality or hospital readmission.
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A thrombotic event in a HeartMate 3 patient in the setting of secondary polycythemia. Proc AMIA Symp 2022; 35:695-696. [DOI: 10.1080/08998280.2022.2077012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
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Special Considerations for Durable Left Ventricular Assist Device Use in Small Patients. ASAIO J 2022; 68:619-622. [PMID: 35275881 DOI: 10.1097/mat.0000000000001716] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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Beta-blockers and Ambulatory Inotropic Therapy. J Card Fail 2022; 28:1309-1317. [PMID: 35447337 DOI: 10.1016/j.cardfail.2022.03.352] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Revised: 03/19/2022] [Accepted: 03/20/2022] [Indexed: 11/19/2022]
Abstract
BACKGROUND Continuous infusion of ambulatory inotropic therapy (AIT) is increasingly used in patients with end-stage heart failure (HF). There is a paucity of data concerning the concomitant use of beta-blockers (BB) in these patients. METHODS We retrospectively reviewed all patients discharged from our institution on AIT. The cohort was stratified into 2 groups based on BB use. The 2 groups were compared for differences in hospitalizations due to HF, ventricular arrhythmias and ICD therapies (shock or antitachycardia pacing). RESULTS Between 2010 and 2017, 349 patients were discharged on AIT (95% on milrinone); 74% were males with a mean age of 61 ± 14 years. BB were used in 195 (56%) patients, whereas 154 (44%) did not receive these medications. Patients in the BB group had longer duration of AIT support compared to those in the non-BB group (141 [1-2114] vs 68 [1-690] days). After adjusting for differences in baseline characteristics and indication for AIT, patients in the BB group had significantly lower rates of hospitalizations due to HF (hazard ratio [HR] 0.61 (0.43-0.86); P = 0.005), ventricular arrhythmias (HR 0.34 [0.15-0.74]; P = 0.007) and ICD therapies (HR 0.24 [0.07-0.79]; P = 0.02). CONCLUSION In patients with end-stage HF on AIT, the use of BB with inotropes was associated with fewer hospitalizations due to HF and fewer ventricular arrhythmias.
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Low Blood Pressure Threshold for Adverse Outcomes During Left Ventricular Assist Device Support. Am J Cardiol 2022; 169:78-85. [PMID: 35063265 DOI: 10.1016/j.amjcard.2021.12.045] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/05/2021] [Revised: 12/19/2021] [Accepted: 12/21/2021] [Indexed: 11/01/2022]
Abstract
It has been suggested that maintaining low mean arterial pressure (MAP) in left ventricular assist device (LVAD) recipients is associated with a reduced risk of stroke/death. However, the lower limit of the optimal MAP range has not been established. We aimed to identify this lower limit in a contemporary cohort of LVAD recipients with frequent longitudinal MAP measurements. We analyzed 86,651 MAP measurements in 309 patients with an LVAD (32% LVADs with full magnetic levitation of the impeller) at a tertiary medical center during a mean follow-up of 1.7 ± 1.1 years. Cox proportional hazards regression modeling was used to study the association of serial MAP measurements with stroke/death within 3 years after index discharge. Multivariate analysis identified MAP ≤75 mm Hg, compared with MAP >75 mm Hg, as the low MAP threshold associated with increased risk of death (hazard ratio [HR] 4.74, 95% confidence interval [CI] 2.85 to 7.87, p <0.001), stroke (HR 2.72;, 95% CI 1.39 to 5.33, p = 0.01), and stroke/death (HR 4.45, 95% CI 2.83 to 6.99, p <0.001). The risk associated with MAP ≤75 mm Hg was consistent in subgroups categorized by age, gender, race, device type, renal function, right-sided heart failure, and blood pressure medications. In conclusion, our findings suggest that maintaining MAP ≤75 mm Hg during long-term follow-up in LVAD recipients is associated with increased risk of stroke/death regardless of risk factors or medical management.
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DIAGNOSIS OF LAMIN A CARDIOMYOPATHY IN SIBLINGS WITH POSSIBLE CARDIAC SARCOIDOSIS. J Am Coll Cardiol 2022. [DOI: 10.1016/s0735-1097(22)03179-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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GENETIC TESTING IN EVALUATION OF SUSPECTED CARDIAC SARCOIDOSIS PATIENTS. J Am Coll Cardiol 2022. [DOI: 10.1016/s0735-1097(22)01242-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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SHOULD HOMOZYGOUS V142I TRANSTHYRETIN AMYLOIDOSIS PATIENTS BE CONSIDERED FOR SCREENING FOR SARCOIDOSIS? J Am Coll Cardiol 2022. [DOI: 10.1016/s0735-1097(22)01501-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Abstract
Arrhythmogenic right ventricular cardiomyopathy (ARVC) is a rare, heritable myocardial disease associated with the development of ventricular arrhythmias, heart failure, and sudden cardiac death in early adulthood. Multimodality imaging is a central component in the diagnosis and evaluation of ARVC. Diagnostic criteria established by an international task force in 2010 include noninvasive parameters from echocardiography and cardiac magnetic resonance imaging. These criteria identify right ventricular structural abnormalities, chamber and outflow tract dilation, and reduced right ventricular function as features of ARVC. Echocardiography is a widely available and cost-effective technique, and it is often selected for initial evaluation. Beyond fulfillment of diagnostic criteria, features such as abnormal tricuspid annular plane excursion, increased right ventricular basal diameter, and abnormal strain patterns have been described. 3-dimensional echocardiography may also expand opportunities for structural and functional assessment of ARVC. Cardiac magnetic resonance has the ability to assess morphological and functional cardiac features of ARVC and is also a core modality in evaluation, however, tissue characterization of the right ventricle is limited by spatial resolution and low specificity for detection of pathological changes. Nonetheless, the ability of cardiac magnetic resonance to identify left ventricular involvement, offer high negative predictive value, and provide a reproducible structural evaluation of the right ventricle enhance the ability and scope of the modality. In this review, the prognostic significance of multimodality imaging is outlined, including the supplemental value of multidetector computed tomography and nuclear imaging. Strengths and weaknesses of imaging techniques, as well as future direction of multimodality assessment, are also described.
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From Hip to Heart: A Comprehensive Evaluation of an Infiltrative Cardiomyopathy. CJC Open 2021; 3:1392-1395. [PMID: 34901809 PMCID: PMC8640576 DOI: 10.1016/j.cjco.2021.06.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2021] [Accepted: 06/15/2021] [Indexed: 11/28/2022] Open
Abstract
Infiltrative cardiomyopathies are an increasingly recognized cause of heart failure warranting systematic evaluation. Given overlap of clinical and imaging findings among etiologies of infiltrative cardiomyopathies, comprehensive evaluation, including a history and physical examination, advanced cardiac imaging, and sometimes endomyocardial biopsy, is required for diagnosis. We report a case of infiltrative cardiomyopathy in which endomyocardial biopsy confirmed diagnosis of cobalt-induced cardiomyopathy. The novel teaching points highlighted by this case report include identification of heavy-metal toxicity as a cause of infiltrative cardiomyopathy, and the outline of a diagnostic approach and management for cobalt-induced cardiomyopathy.
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Impact of Race on Clinical Outcomes After Implantation With a Fully Magnetically Levitated Left Ventricular Assist Device: An Analysis From the MOMENTUM 3 Trial. Circ Heart Fail 2021; 14:e008360. [PMID: 34525837 DOI: 10.1161/circheartfailure.120.008360] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND Heart failure disproportionately affects Black patients. Whether differences among race influence outcomes in advanced heart failure with use of a fully magnetically levitated continuous-flow left ventricular assist device remains uncertain. METHODS We included 515 IDE (Investigational Device Exemption) clinical trial patients and 500 Continued Access Protocol patients implanted with the HeartMate 3 left ventricular assist device in the MOMENTUM 3 study (Multicenter Study of MagLev Technology in Patients Undergoing Mechanical Circulatory Support Therapy With HeartMate 3). Outcomes were compared between Black and White left ventricular assist device recipients for the primary end point of survival free of disabling stroke or reoperation to replace or remove a malfunctioning device at 2 years, overall survival, adverse events, 6-minute walk distance, and quality of life scores. RESULTS Of 1015 HeartMate 3 patients, 675 were self-identified as White and 285 as Black individuals. The Black patient cohort was younger, more obese and with a history of hypertension, and more nonischemic cause of heart failure, relative to the White patient group. Black and White patients did not experience a difference in the primary end point (81.1% versus 77.9%; hazard ratio, 1.08 [95% CI, 0.76-1.54], P=0.6568). Black patients were at higher risk of adverse events (calculated as events per 100 patient-years), including bleeding (75.4 versus 63.5; P<0.0001), stroke (9.5 versus 7.2; P=0.0183), and hypertension (10.1 versus 3.2; P<0.0001). The 6-minute walk distance was not different at baseline and 6 months between the groups, however, the absolute change from baseline was greater for White patients (median: +183.0 [interquartile range, 42.0-335.3] versus +163.8 [interquartile range, 42.3-315.0] meters, P=0.01). The absolute quality of life measurement (EuroQoL group, 5-dimension, 5-level instrument visual analog scale) at baseline and 6 months was better in the Black patient group, but relative improvement from baseline to 6 months was greater in White patients (median: +20.0 [interquartile range, 5.0-40.0] versus +25.0 [interquartile range, 10.0-45.0]; P=0.0298). CONCLUSIONS Although the survival free of disabling stroke or reoperation to replace/remove a malfunctioning device at 2 years with the HM 3 left ventricular assist device did not differ by race, Black HeartMate 3 patients experienced a higher morbidity burden and smaller gains in functional capacity and quality of life when compared with White patients. These findings require efforts designed to better understand and overcome these gaps through systematic identification and tackling of putative factors. Registration: URL: https://www.clinicaltrials.gov; Unique identifiers: NCT02224755 and NCT02892955.
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Outcomes in patients with smaller body surface area after HeartMate 3 left ventricular assist device implantation. Artif Organs 2021; 46:460-470. [PMID: 34516000 DOI: 10.1111/aor.14065] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Revised: 08/05/2021] [Accepted: 09/03/2021] [Indexed: 02/01/2023]
Abstract
BACKGROUND Due to anatomic and physiologic concerns, prior generations of the left ventricular assist devices (LVAD) have frequently been denied to patients with small body size. However, outcomes in patients with small body surface area (BSA) following HeartMate 3 (HM3) LVAD implantation remain relatively unknown. METHODS A cohort of 220 patients implanted at a single center was divided into two groups: BSA ≤1.8 m2 (small BSA, n = 37) and BSA >1.8 m2 (large BSA, n = 183). We investigated baseline characteristics and clinical outcomes including survival and incidence of adverse events. RESULTS Small BSA patients were older (60 vs. 57 years), more likely female (60% vs. 20%), had a lower body mass index (24 vs. 32 kg/m2 ), lower incidence of diabetes (32% vs. 51%), history of stroke (5% vs. 19%), and left ventricular thrombus (0% vs. 11%). They had smaller left ventricular end diastolic diameter (64.8 vs. 69.3 mm). Pump speed and pump flows at discharge were lower in the small BSA group. Survival at 1 year and 2 years was 86% versus 87% and 86% versus 79% for small versus large BSA groups (p = 0.408), respectively. The rates of adverse events were similar between groups and there were no cases of confirmed pump thrombosis. The incidence of readmissions for low flow alarms was higher in the small BSA group (0.55 vs. 0.24 EPPY). CONCLUSIONS These findings demonstrate comparable outcomes in patients with small body size and suggest that this parameter should not be an exclusion criterion on patients who are otherwise candidates for HM3 LVAD implantation.
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Characteristics and Outcomes of Patients with Inflammatory Cardiomyopathies Receiving Mechanical Circulatory Support: An STS-INTERMACS Registry Analysis. J Card Fail 2021; 28:71-82. [PMID: 34474157 DOI: 10.1016/j.cardfail.2021.07.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Revised: 07/03/2021] [Accepted: 07/28/2021] [Indexed: 11/24/2022]
Abstract
BACKGROUND Durable mechanical circulatory support (MCS) therapy improves survival in patients with advanced heart failure. Knowledge regarding the outcomes experienced by patients with inflammatory cardiomyopathy (CM) who receive durable MCS therapy is limited. METHODS AND RESULTS We compared patients with inflammatory CM with patients with idiopathic dilated CM enrolled in the STS-INTERMACS registry. Among 19,012 patients, 329 (1.7%) had inflammatory CM and 5978 had idiopathic dilated CM (31.4%). The patients with inflammatory CM were younger, more likely to be White, and women. These patients experienced more preoperative arrhythmias and higher use of temporary MCS. Patients with inflammatory CM had a higher rate of early adverse events (<3 months after device implant), including bleeding, arrhythmias, non-device-related infections, neurologic dysfunction, and respiratory failure. The rate of late adverse events (≥3 months) was similar in the 2 groups. Patients with inflammatory CM had a similar 1-year (80% vs 84%) and 2-year (72% vs 76%, P = .15) survival. Myocardial recovery resulting in device explant was more common among patients with inflammatory CM (5.5% vs 2.3%, P < .001). CONCLUSIONS Patients with inflammatory CM who received durable MCS appear to have a similar survival compared with patients with idiopathic dilated CM despite a higher early adverse event burden. Our findings support the use of durable MCS in an inflammatory CM population.
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Abstract
Left ventricular assist devices (LVAD) are increasingly being used as destination therapy in patients with Stage D heart failure. It has been reported that a majority of patients who receive a durable LVAD (dLVAD) present in cardiogenic shock due to decompensated heart failure (ADHF‐CS). As it stands, there is no consensus on the optimal management strategy for patients presenting with ADHF. Bridging with intra‐aortic balloon pumps (IABPs) continues to be a therapeutic option in patients with hemodynamic instability due to cardiogenic shock. The majority of data regarding the use of IABP in cardiogenic shock come from studies in patients presenting with acute myocardial infarction with cardiogenic shock and demonstrates that there is no benefit of routine IABP use in this patient population. However, the role of IABPs as a bridge to dLVAD in ADHF‐CS has yet to be determined. The hemodynamic changes seen in acute myocardial infarction with cardiogenic shock are known to be different and more acutely impaired than those presenting with ADHF‐CS as evidenced by differences in pressure/volume loops. Thus, data should not be extrapolated across these 2 very different disease processes. The aim of this review is to describe results from contemporary studies examining the use of IABPs as a bridge to dLVAD in patients with ADHF‐CS. Retrospective evidence from large registries suggests that the use of IABP as a bridge to dLVAD is feasible and safe when compared with other platforms of temporary mechanical circulatory support. However, there is currently a paucity of high‐quality evidence examining this increasingly important clinical question.
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Income disparity and incident cardiovascular disease in older Americans. Prog Cardiovasc Dis 2021; 71:92-99. [PMID: 34320387 DOI: 10.1016/j.pcad.2021.07.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Accepted: 07/21/2021] [Indexed: 12/15/2022]
Abstract
OBJECTIVE To examine the association between income and cardiovascular disease (CVD) in community-dwelling older adults. METHODS Of the 5795 Medicare-eligible community-dwelling older Americans aged 65-100 years in the Cardiovascular Health Study (CHS), 4518 (78%) were free of baseline CVD, defined as heart failure, acute myocardial infarction, stroke, or peripheral arterial disease. Of them, 1846 (41%) had lower income, defined as a total annual household income <$16,000. Using propensity scores for lower income, estimated for each of the 4518 participants, we assembled a matched cohort of 1078 pairs balanced on 42 baseline characteristics. Outcomes included centrally adjudicated incident CVD and mortality. RESULTS Matched participants (n = 2156) had a mean age of 73 years, 63% were women, and 13% African American. During an overall follow-up of 23 years, incident CVD, all-cause mortality and the combined endpoint of incident CVD or mortality occurred in 1094 (51%), 1726 (80%) and 1867 (87%) individuals, respectively. Compared with the higher income group, hazard ratio (HR) for time to the first occurrence of incident CVD in the lower income group was 1.16 with a 95% confidence interval of 1.03 to 1.31. A lower income was also associated with a significantly higher risk of all-cause mortality (HR, 1.19; 95% CI, 1.08-1.30), and consequently a higher risk of the combined endpoint of incident CVD or death (HR, 1.20; 95% CI, 1.09-1.31). CONCLUSION Among community-dwelling older Americans free of baseline CVD, an annual household income <$16,000 is independently associated with significantly higher risks of new-onset CVD and death.
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Sarcoidosis-Related Cardiomyopathy: Current Knowledge, Challenges, and Future Perspectives State-of-the-Art Review. J Card Fail 2021; 28:113-132. [PMID: 34260889 DOI: 10.1016/j.cardfail.2021.06.016] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2021] [Accepted: 06/21/2021] [Indexed: 12/21/2022]
Abstract
The prevalence of sarcoidosis-related cardiomyopathy is increasing. Sarcoidosis impacts cardiac function through granulomatous infiltration of the heart, resulting in conduction disease, arrhythmia, and/or heart failure. The diagnosis of cardiac sarcoidosis (CS) can be challenging and requires clinician awareness as well as differentiation from overlapping diagnostic phenotypes, such as other forms of myocarditis and arrhythmogenic cardiomyopathy. Clinical manifestations, extracardiac involvement, histopathology, and advanced cardiac imaging can all lend support to a diagnosis of CS. The mainstay of therapy for CS is immunosuppression; however, no prospective clinical trials exist to guide management. Patients may progress to developing advanced heart failure or ventricular arrhythmia, for which ventricular assist device therapies or heart transplantation may be considered. The existing knowledge gaps in CS call for an interdisciplinary approach to both patient care and future investigation to improve mechanistic understanding and therapeutic strategies.
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Practices of Referring Patients to Advanced Heart Failure Centers. J Card Fail 2021; 27:1251-1259. [PMID: 34146684 DOI: 10.1016/j.cardfail.2021.05.024] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2020] [Revised: 05/19/2021] [Accepted: 05/19/2021] [Indexed: 12/20/2022]
Abstract
BACKGROUND Therapies for advanced heart failure (AHF) improve the likelihood of survival in a growing population of patients with stage D heart failure (HF). Successful implementation of these therapies is dependent upon timely and appropriate referrals to AHF centers. METHODS We performed a retrospective analysis of patients referred to 9 AHF centers for evaluation for AHF therapies. Patients' demographics, referring providers' characteristics, referral circumstances, and evaluation outcomes were collected. RESULTS The majority of referrals (n = 515) were male (73.4%), and a majority of those were in the advanced state of the disease: very low left ventricular ejection fraction (<20% in 51.5%); 59.4% inpatient; and high risk Interagency Registry for Mechanically Assisted Circulatory Support (INTERMACS) profiles (74.5% profile 1-3). HF cardiologists (49.1%) were the most common originating referral source; the least common (4.9%) were electrophysiologists. Common clinical triggers for referral included worsening HF (30.0%), inotrope dependence (19.6%), hospitalization (19.4%), and cardiogenic shock (17.8%). Most commonly, AHF therapies were not offered because patients were too sick (38.0%-45.1%) or for psychosocial reasons (20.3%-28.6%). Compared to non-HF cardiologists, patients referred by HF cardiologists were offered an AHF therapy more often (66.8% vs 58.4%, P = 0.0489). Of those not offered any AHF therapy, 28.4% received home inotropic therapy, and 14.5% were referred to hospice. CONCLUSIONS In this multicenter review of AHF referrals, HF cardiologists referred the most patients despite being a relatively small proportion of the overall clinician population. Late referral was prevalent in this high-risk patient population and correlates with worsened outcomes, suggesting a significant need for broad clinician education regarding the benefits, triggers and appropriate timing of referral to AHF centers for optimal patient outcomes.
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Left Ventricular Assist Devices in Patients With Active Malignancies. JACC CardioOncol 2021; 3:305-315. [PMID: 34396339 PMCID: PMC8352017 DOI: 10.1016/j.jaccao.2021.04.008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Revised: 04/07/2021] [Accepted: 04/13/2021] [Indexed: 01/09/2023] Open
Abstract
BACKGROUND There are limited data to guide oncology and cardiology decision-making in patients with a left ventricular assist device (LVAD) and concurrent active malignancy. OBJECTIVES The goal of this study was to describe cancer treatment approaches, complications, and survival among patients with active cancer on LVAD support in 2 tertiary heart failure and oncology programs. METHODS In this retrospective cohort study, LVAD databases were reviewed to identify patients with a cancer diagnosis at the time of or after LVAD implantation. We created a 3:1 matched cohort based on age, sex, etiology of cardiomyopathy, LVAD implant strategy, and INTERMACS profile stratified by site. Kaplan-Meier analysis and Cox proportional hazards models were used to compare survival between patients with cancer and non-cancer comparators. RESULTS Among 1,123 patients who underwent LVAD implantation between 2005 and 2019, 22 patients with LVADs with active cancer and 66 matched non-cancer comparators were identified. Median age was 62 years (range 41 to 73 years); 50% of patients with cancer were African-American, and 27% were women. Prostate cancer, followed by renal cell cancer and hematologic malignancies were the most common diagnoses. There was no significant difference in unadjusted Kaplan-Meier median survival estimates from the time of LVAD placement between patients with cancer (3.53 years; 95% confidence interval [CI]: 1.41 to 5.33) and non-cancer comparators (3.03 years; 95% CI: 1.83 to 5.26; log-rank P = 0.99). In Cox proportional hazard models, cancer diagnosis as a time-varying variable was associated with a statistically significant increase in death (hazard ratio: 2.05; 95% CI: 1.03 to 4.12; P = 0.04). Patients with cancer had less gastrointestinal bleeding compared with matched non-cancer comparators (P = 0.016). Other complications were not significantly different. CONCLUSIONS Our study provides initial feasibility and safety data and set a framework for multidisciplinary team management of patients with cancer and LVADs.
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Abstract
Purpose of Review A growing number of cardiovascular manifestations resulting from the novel SARS-CoV-2 coronavirus (COVID-19) have been described since the beginning of this global pandemic. Acute myocardial injury is common in this population and is associated with higher rates of morbidity and mortality. The focus of this review centers on the recent applications of multimodality imaging in the diagnosis and management of COVID-19-related cardiovascular conditions. Recent Findings In addition to standard cardiac imaging techniques such as transthoracic echocardiography, other modalities including computed tomography and cardiac magnetic resonance imaging have emerged as useful adjuncts in select patients with COVID-19 infection, particularly those with suspected ischemic and nonischemic myocardial injury. Data have also emerged suggesting lasting COVID-19 subclinical cardiac effects, which may have long-term prognostic implications. Summary With the spectrum of COVID-19 cardiovascular manifestations observed thus far, it is important for clinicians to recognize the role, strengths, and limitations of multimodality imaging techniques in this patient population.
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