The work of a cardiologist focuses on the prevention and treatment of cardiovascular diseases, for example, coronary heart disease, hypertension, myocarditis, heart defects or heart failure. During the examination, the cardiologist can use palpation, percussion, auscultation and other methods of examination. He can also measure blood pressure and heart rate. The need for consultation with a cardiologist can indicate a variety of signs — chest pain, heart rhythm disturbances, weakness and much more.