COVID-19 vaccine-related heart inflammation: 4 study findings 

Patients with COVID-19 vaccine-associated heart inflammation had less functional impairment and less extensive myocardial abnormalities than people infected with the virus, a study published Feb. 15 in Radiology found.

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Researchers analyzed data from 92 consecutive adult patients with myocarditis and abnormalities on cardiac MRI performed between 2019 and 2021. Patients were classified into three groups: myocarditis after COVID-19 vaccination, myocarditis after COVID-19 infection and myocarditis not associated COVID-19 vaccination or infection.

Three other key findings: 

  • Twenty-two percent of patients had myocarditis after vaccination; 11 percent had myocarditis after illness; and 66 percent had myocarditis for other reasons.
  • Fourteen of the vaccinated patients were admitted to a hospital with a median length of stay of three days, but none were admitted to the intensive care unit.
  • All patients with vaccine-associated myocarditis were asymptomatic with no adverse events during a short follow-up visit.

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