Aortic Stenosis:
Hemodynamically significant outflow obstruction from aortic valve narrowing, causing progressive left ventricular pressure overload. The classic symptomatic triad (dyspnea, angina, syncope) heralds critical disease.

Key Examination Findings:

· Harsh crescendo-decrescendo systolic murmur
· Pulsus parvus et tardus
· Sustained PMI with narrow pulse pressure

Management: Symptomatic severe AS requires mechanical intervention (SAVR/TAVR). TAVR is now first-line for most adults.
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