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Int Heart J . Different Types of Myocardial Injury due to the Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) Omicron Variant

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  • Int Heart J . Different Types of Myocardial Injury due to the Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) Omicron Variant


    Int Heart J


    . 2023 Jan 23.
    doi: 10.1536/ihj.22-355. Online ahead of print.
    Different Types of Myocardial Injury due to the Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) Omicron Variant


    Keishi Moriwaki 1 , Naoki Fujimoto 1 , Hiroaki Murakami 1 , Kazuaki Maruyama 2 , Masaki Ishida 3 , Masaki Tanabe 4 , Kyoko Imanaka-Yoshida 3 , Kaoru Dohi 1



    Affiliations

    Abstract

    Coronavirus disease 2019 (COVID-19) associated myocardial injury was caused by various mechanisms. We herein describe 2 cases presenting different types of myocardial injury due to Omicron variant. In both patients, diffuse reduced left ventricular (LV) wall motion in transthoracic echocardiography, electrocardiographic abnormality, and elevated myocardial enzymes were demonstrated. In addition, cardiovascular magnetic resonance (CMR) findings fulfilled the 2018 Lake Louise Criteria (LLC) for myocarditis. However, histological findings in 1 patient showed inflammatory cell infiltration with myocyte degeneration, while those in the other showed interstitial edema without inflammatory cell infiltration. Histological findings were crucial for a differential diagnosis of myocardial injury due to Omicron variant.

    Keywords: COVID-19; Cardiovascular magnetic resonance; Histology; Myocarditis.


  • #2

    From the paper:

    Case 1:A 64-year-old woman with a medical history of
    hypertension and dyslipidemia presented with fever 6 days
    prior to admission and dyspnea. She visited a nearby hos-
    pital and was referred to our hospital because of the
    changes in a 12-lead electrocardiogram (ECG), elevated
    myocardial enzymes, and a positive SARS-CoV-2 antigen
    test. She had received 2 doses of COVID-19 vaccination.
    Case 2:A previously healthy 24-year-old man presented
    to a local clinic due to a sore throat and fever 7 days
    prior to admission. Antigen testing for SARS-CoV-2 was
    negative. Although his symptoms were temporarily re-
    lieved by antipyretic analgesics, he developed fever again
    2 days prior to admission. As he experienced general mal-
    aise and epigastric pain, he visited a nearby hospital. Be-
    cause of a positive SARS-CoV-2 antigen test, an abnormal
    electrocardiogram, and elevated myocardial enzymes, he
    was referred to our hospital for admission. He had never
    received COVID-19 vaccination.
    _____________________________________________

    Ask Congress to Investigate COVID Origins and Government Response to Pandemic H.R. 834

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