In some cases, a third or fourth sound can be heard, creating a rhythm that sounds like a galloping horse. While common in athletes or pregnant women, in older adults, it can sometimes be a sign of heart failure or stiff heart walls. Conclusion
Sometimes, a doctor might hear more than just the standard two sounds. Using a stethoscope, they listen for "extra" noises that might indicate a change in heart function: lub dub sounds of the heart
This happens at the beginning of systole (the contraction phase). In some cases, a third or fourth sound
This happens at the beginning of diastole (the relaxation phase). Using a stethoscope, they listen for "extra" noises
While it sounds like a simple beat, these two distinct sounds are actually the acoustic signature of a complex mechanical process. Here is a deep dive into what those sounds mean, how they are created, and what they tell us about our health. What Exactly Is the "Lub-Dub"?