Acute myocarditis accounts for 0.04% of hospital admissions in England, with up to 30% of biopsy-proven cases progressing to dilated cardiomyopathy and an all-cause mortality of approximately 4%.
Acute myocarditis is a serious condition with rising hospital admissions in the UK, where up to 30% of biopsy-proven cases progress to dilated cardiomyopathy and all-cause mortality is approximately 4%.
Acute myocarditis is a serious, likely underdiagnosed condition affecting people of all ages and for which the number of UK hospital admissions is rising. A primary diagnosis of myocarditis accounted for 0.04% (36.5 per 100,000) of all hospital admissions in England between 1998 and 2017, although this is likely to be an underestimate of the true burden of myocarditis. The aetiology is broad, including infective and inflammatory conditions as well as exposure to toxic agents. Clinical features are varied and overlap with other acute cardiac conditions making diagnosis a challenge. Cardiovascular magnetic resonance imaging currently serves as the gold standard non-invasive diagnostic modality. If an underlying aetiological process is identified, then therapy may be directed at the cause; however, for most, treatment is supportive and aimed at managing any complications such as heart failure or arrhythmias. There is emerging evidence for immunosuppressive therapy in certain cases. Prognosis is generally good with recovery in most; however, up to 30% with biopsy-proven myocarditis progress to develop a dilated cardiomyopathy and its potential associated complications. All-cause mortality in the UK for patients presenting to hospital with acute myocarditis is approximately 4%.
Lampejo et al. (2021) conducted a review in Acute myocarditis. Acute myocarditis accounts for 0.04% of hospital admissions in England, with up to 30% of biopsy-proven cases progressing to dilated cardiomyopathy and an all-cause mortality of approximately 4%.