Aortic Stenosis Cardinal Symptoms: SAD

The classic triad signaling severe hemodynamically significant calcific aortic stenosis and dramatic drop in survival.

Critical narrowing of the aortic valve orifice (< 1.0 cm2) severely restricts stroke volume and induces marked left ventricular concentric hypertrophy. Symptom onset denotes steep drop in life expectancy without surgical or transcatheter replacement.

Systematic Breakdown

Syncope (Exertional)

Fixed cardiac output cannot increase to meet peripheral vasodilation during exercise, leading to cerebral hypoperfusion (mean survival ~3 years).

Angina

Increased myocardial oxygen demand from hypertrophied ventricle combined with reduced coronary perfusion pressure (mean survival ~5 years).

Dyspnea / Heart Failure

Elevated LV diastolic filling pressures transmit backward into pulmonary vasculature causing pulmonary edema (mean survival ~2 years).

High-Yield Clinical Pearls & Exam Tips

Auscultation: Harsh crescendo-decrescendo systolic ejection murmur radiating to the carotids, with soft or absent second heart sound (A2) and pulsus parvus et tardus (weak and delayed carotid pulse).
Symptomatic severe aortic stenosis is an absolute indication for valve replacement (SAVR or TAVR).

Related Pharmaceuticals

Avoid vigorous nitrates/diuretics (hypotension risk)

Related Clinical Conditions

Calcific Aortic Stenosis Bicuspid Aortic Valve Heart Failure

Authoritative Sources: AHA/ACC Guideline for the Management of Patients with Valvular Heart Disease · Braunwald's Heart Disease 12e

Aortic Stenosis Cardinal Symptoms: SAD

Systematic Breakdown

Syncope (Exertional)

Angina

Dyspnea / Heart Failure

More Cardiology Mnemonics

Acute Coronary Syndrome Initial Management

Cardiac Tamponade: Beck's Triad

Atrial Fibrillation Stroke Risk: CHA2DS2-VASc

System Notice

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