🎵 Sound Library
Normal Sounds
Normal S1 + S2
"Lub-dub" 75 BPM. Valve closures at systole boundaries.
Physiologic Split S2
Normal S2 splitting on inspiration.
Extra Heart Sounds
S3 Gallop
"Ken-tuck-y" — early diastole. CHF/volume overload.
S4 Gallop
"Ten-nes-see" — presystolic. Stiff ventricle.
Valve Murmurs
Aortic Stenosis
Crescendo-decrescendo systolic. Radiates to carotids.
Mitral Regurgitation
Holosystolic blowing. Radiates to axilla.
Aortic Regurgitation
Diastolic decrescendo. Best leaning forward.
Mitral Stenosis
Diastolic rumble + opening snap.
Advanced Sounds
Pericardial Friction Rub
Scratchy 3-component. Leaning forward.
Mechanical Valve Click
Metallic click. Replaces S1 or S2.
Mitral Valve Prolapse
Mid-systolic click + late systolic murmur.
Tricuspid Regurgitation
Holosystolic LLSB. Increases with inspiration.
Congenital PRO
Patent Ductus Arteriosus
Continuous "machinery" murmur. Peaks at S2.
Ventricular Septal Defect
Harsh holosystolic at LLSB.
Atrial Septal Defect
Fixed split S2. Never closes on expiration.
Advanced PRO PRO
Pulmonary Stenosis
Ejection click + crescendo-decrescendo at LUSB.
Still's Innocent Murmur
Soft vibratory musical. Pediatric. Benign.
Summation Gallop
S3 + S4 merged at high rate. Severe HF.
Hypertrophic Cardiomyopathy
Dynamic obstruction. Worse with standing.
Bioprosthetic Valve
Softer tissue valve sounds vs. mechanical.
0
Sounds Studied
—
Quiz Accuracy
Mitral
Closed
Tricuspid
Closed
Aortic
Closed
Pulmonic
Closed
🩺 What You're Hearing
Normal heart sounds. S1 at start of systole. S2 at end of systole.
💡 NCLEX Pearl: S1 loudest at apex, S2 at base. Normal HR 60-100 BPM.
A
Aortic
P
Pulm.
E
Erb's
T
Tricusp.
M
Mitral
📊 Progress
Sounds Studied0/20
Scenarios Done0/12
Quiz Accuracy—
Optional — adds personalized clinical explanations. All sounds work without it.
🎯 Quiz Mode