• J. Card. Fail. · Jun 2019

    Trends in the Incidence of In-Hospital Mortality, Cardiogenic Shock, and Utilization of Mechanical Circulatory Support Devices in Myocarditis (Analysis of National Inpatient Sample Data, 2005-2014).

    • Mohit Pahuja, Oluwole Adegbala, Tushar Mishra, Emmanuel Akintoye, Omar Chehab, Shruti Mony, Manmohan Singh, Tomo Ando, Hossam Abubaker, Ahmed Yassin, Ahmed Subahi, Mohamed Shokr, Sagar Ranka, Alexandros Briasoulis, Navin K Kapur, Daniel Burkhoff, and Luis Afonso.
    • Division of Cardiology, Department of Inernal Medicine, Detroit Medical Center, Wayne State University School of Medicine, Detroit, Michigan.
    • J. Card. Fail. 2019 Jun 1; 25 (6): 457-467.

    BackgroundMyocarditis may be associated with hemodynamic instability and portends a poor prognosis when associated with cardiogenic shock (CS). There are limited data available on the incidence of in-hospital mortality, CS, and utilization of mechanical circulatory support (MCS) devices in these patients.MethodsWe queried the 2005-2014 National Inpatient Sample databases to identify all patients aged >18 years with myocarditis in the United States.ResultsThe number of reported cases of myocarditis per 1 million gradually increased from 95 in 2005 to 144 in 2014 (Pfor trend <.01). The trend and incidence of endomyocardial biopsy remained the same despite the increase in clinical diagnosis. Overall, in-hospital mortality was 4.43% of total admissions without a change in overall trend over the study period. We also observed a significant increase in the incidence of CS from 6.94% in 2005 to 11.99% in 2014 (Pfor trend <.01). There was a parallel increase in the utilization of advanced MCS devices during the same time period such as extracorporeal membrane oxygenation or percutaneous cardiopulmonary support (0.32% in 2005 to 2.1% in 2014; P< .01) and percutaneous ventricular assist devices such as Impella/tandem heart (0.176% in 2005 to 1.75% in 2014; P< .01).ConclusionAlthough the incidence of myocarditis has increased in the last decade, the in-hospital mortality has remained the same despite increases in the incidence of CS, possibly reflecting the benefits of increased usage of advanced MCS devices. We noted that increasing age, presence of multiple comorbidities and CS were associated with an increase in in-patient mortality.Copyright © 2019 Elsevier Inc. All rights reserved.

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