Carey Coombs murmur is a clinical feature of acute rheumatic fever that is identified on auscultation. Carey Coombs murmur occurs as a result of flow of blood across mitral valve that has been thickened secondary to inflammation. Reference: https://www.healio.com/cardiology/learn-the-heart/cardiology-review/topic-reviews/carey-coombs-murmur Video source: https://www.youtube.com/watch?v=prcdXzhS5EE