Trends in myocarditis incidence, complications and mortality in Sweden from 2000 to 2014.

• Investigate trends in myocarditis incidence and prognosis in Sweden during 2000-2014. Little data exist concerning population-trends in incidence of hospitalizations for myocarditis and subsequent prognosis. Linking Swedish National Patient and Cause of Death Registers, we identified individuals≥16years with first-time diagnosis of myocarditis during 2000-2014. Reference population, matched for age and birth year (n=16,622) was selected from Swedish Total Population Register. Among the 8 679 cases (75% men, 64%<50years), incidence rate/100,000 inhabitants rose from 6.3 to 8.6 per 100,000, mostly in men and those<50years. Incident heart failure/dilated cardiomyopathy occurred in 6.2% within 1year after index hospitalization and in 10.2% during 2000-2014, predominantly in those≥50years (12.1% within 1year, 20.8% during 2000-2014). In all 8.1% died within 1year, 0.9% (<50years) and 20.8% (≥50years). Hazard ratios (adjusted for age, sex) for 1-year mortality comparing cases and controls were 4.00 (95% confidence interval 1.37-11.70), 4.48 (2.57-7.82), 4.57 (3.31-6.31) and 3.93 (3.39-4.57) for individuals aged<30, 30 to<50, 50 to<70, and≥70years, respectively. The incidence of myocarditis during 2000-2014 increased, predominantly in men<50years. One-year mortality was low, but fourfold higher compared with reference population.

Subject headings

MEDICIN OCH HÄLSOVETENSKAP  -- Klinisk medicin -- Kardiologi (hsv//swe)

MEDICAL AND HEALTH SCIENCES  -- Clinical Medicine -- Cardiac and Cardiovascular Systems (hsv//eng)

MEDICIN OCH HÄLSOVETENSKAP  -- Klinisk medicin (hsv//swe)

MEDICAL AND HEALTH SCIENCES  -- Clinical Medicine (hsv//eng)

Publication and Content Type

ref (subject category)

art (subject category)