S1 S2 Lub Dub May 2026
"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
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
Let's break it down:
💓 S1, S2, Lub, Dub: The Foundation of Heart Auscultation "LUB" = valves close, blood goes out "DUB"
