COVID can also cause abnormal heart rhythms, blood clots in the legs and lungs, and heart failure. Our understanding of how COVID causes heart inflammation and injury to the heart muscle is becoming clearer, though there’s more to learn. Persistent symptoms from the virus, called “long COVID”, have been reported in about 10-30% of people who’ve contracted COVID.
One study on long COVID, published in July, found common cardiovascular symptoms include heart palpitations, fast heart rate, slow heart rate, chest pain, visible bulging veins, and fainting.