COVID-19 causes heart problems that range from irregular heartbeats to angina.br It also worsens pre-existing cardiovascular conditions, according to an analysis and UPI.br Just over 14 of people hospitalized due to infection with the new coronavirus...br ...Have developed heart complications due to the disease, the researchers said.br That's in addition to the nearly 13 of those hospitalized who had pre-existing heart conditions.br Roughly 10 of those with heart conditions who were infected have died.