Background Patients with pre-existing heart failure (HF) are likely at higher risk for adverse outcomes in coronavirus disease-2019 (COVID-19), but data on this population are sparse. Objectives This study described the clinical profile and associated outcomes among patients with HF hospitalized with COVID-19. Methods This study conducted a retrospective analysis of 6,439 patients admitted for COVID-19 at 1 of 5 Mount Sinai Health System hospitals in New York City between February 27 and June 26, 2020. Clinical characteristics and outcomes (length of stay, need for intensive care unit, mechanical ventilation, and in-hospital mortality) were captured from electronic health records. For patients identified as having a history of HF by International Classification of Diseases-9th and/or 10th Revisions codes, manual chart abstraction informed etiology, functional class, and left ventricular ejection fraction (LVEF). Results Mean age was 63.5 years, and 45% were women. Compared with patients without HF, those with previous HF experienced longer length of stay (8 days vs. 6 days; p < 0.001), increased risk of mechanical ventilation (22.8% vs. 11.9%; adjusted odds ratio: 3.64; 95% confidence interval: 2.56 to 5.16; p < 0.001), and mortality (40.0% vs. 24.9%; adjusted odds ratio: 1.88; 95% confidence interval: 1.27 to 2.78; p = 0.002). Outcomes among patients with HF were similar, regardless of LVEF or renin-angiotensin-aldosterone inhibitor use. Conclusions History of HF was associated with higher risk of mechanical ventilation and mortality among patients hospitalized for COVID-19, regardless of LVEF.

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We present a rare case of anagrelide-induced pericardial effusion that is presented with tamponade physiology in a patient with essential thrombocythemia. After cautiously weighing the risks and benefits of further invasive interventions following an unsuccessful pericardiocentesis, the decision was to stop anagrelide while managing the pericardial effusion medically.

Pericardial effusion leading to cardiac tamponade can occur due to a multitude of etiologies, one of which is medication adverse effects. In patients with comorbid conditions, this can prove to be a challenge in its co‐management along with the primary disease. We present a rare case of anagrelide‐induced pericardial effusion that is presented with tamponade physiology in a patient with essential thrombocythemia. After cautiously weighing the risks and benefits of further invasive interventions following an unsuccessful pericardiocentesis, the decision was to stop anagrelide while managing the pericardial effusion medically. Therefore, managing pericardial effusion should be tailored to each patient individually through shared decision‐making.

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