No, heart murmur and arrhythmia are separate heart conditions with distinct causes. A heart murmur involves unusual sounds during a heartbeat due to abnormal blood flow (6, 7), while arrhythmias refer to irregular heart rhythms or irregular heartbeat patterns (16). However, antiarrhythmic medications (to manage arrhythmia) can also be used to regulate the heart's rhythm in cases of heart murmurs (6).