AC patients registered a variety of complications: recurrence of the disease was registered in 21.6% of the cases,
thromboendocarditis was discovered in 8.1% of the cases, the emerging aneurysm was found in 24.3% of the cases, disorders of the heart rhythm and conductivity-in 40.5% of the cases, early post-infarction angina registered in 27% of the cases.