Important essentials Anesthesiologist should know about Aortic Stenosis: N ormal aortic valve orifice is 2.5 - 3.5 cm² Critical aortic stenosis is 0.5–0. 7 cm² A decreased valvular area causes increased pressure gradient ( mmHg ): Mild < 25 Moderate 25 - 40 Severe > 40 Very severe > 70 Triad of Symptoms: Dyspnea on exertion Angina Orthostatic or exertional syncope Diastolic dysfunction is the result of an increase inventricular muscle mass, fibrosis, or myocardial ischemia. Loss of atrial systole can precipitate congestive heart failure or hypotension in patients with aortic stenosis. Patients may experience angina even in the absence of Coronary Artery Deasease. Once symptoms develop, most patients, without surgical treatment, will die within 2–5 years. ANESTHETIC MANAGEMENT click to enlarge:
