The Intern At Work: Internal Medicine 3. The Tight Valve - Part 1: Aortic Stenosis
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Jun 10, 2018 Exploring aortic stenosis, including causes, symptoms, and risks. Delving into mortality rates and symptoms associated with the disease, highlighting the importance of valve intervention.
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Pathophysiology of Aortic Stenosis
- Aortic stenosis is a fixed obstruction causing the left ventricle to work harder, leading to hypertrophy and diastolic dysfunction.
- This increases myocardium oxygen demand while decreasing coronary perfusion, causing ischemia even without coronary artery disease.
Coronary Perfusion in Aortic Stenosis
- Coronary arteries perfuse during systemic diastole and are affected by left ventricular end diastolic pressure.
- Elevated left ventricular diastolic pressure in aortic stenosis reduces coronary perfusion pressure, causing global ischemia.
Approach to Aortic Stenosis Patient
- When evaluating a patient with aortic stenosis, think about the underlying cause, age, and comorbidities.
- Recognize the classic triad of symptoms to assess severity and prognosis for timely intervention.