"LUB" = valves close, blood goes out "DUB" = valves snap, blood fills back in When to worry: Muffled sounds, extra sounds (S3, S4), or irregular rhythms always warrant a closer look. Hashtags: #Cardiology #NursingSchool #HeartSounds #MedEd #Auscultation #LubDub

Let's break it down:

Ever wondered what "Lub-Dub" really means? That familiar sound isn't just a metaphor—it's the literal phonetic representation of your heart's valve closures.

S1 S2 Lub Dub · No Survey

Let's break it down:

Ever wondered what "Lub-Dub" really means? That familiar sound isn't just a metaphor—it's the literal phonetic representation of your heart's valve closures. s1 s2 lub dub