Final answer:
Heart murmurs usually indicate cardiac problems. They are abnormal heart sounds caused by the turbulent flow of blood.
Step-by-step explanation:
Heart murmurs usually indicate cardiac problems. A heart murmur is an abnormal heart sound caused by the turbulent flow of blood. It can be detected through auscultation, which involves listening to the heart sounds using a stethoscope. Murmurs can be graded on a scale of 1 to 6, with 1 being the least serious and 6 being the most severe.