DrMKZ

Sebab selalu melupakannya maka kena simpan sini.

This is a classic continuity equation question for calculating aortic valve area (AVA) in Aortic stenosis.
 Core concept
Flow in = Flow out
So:
燐 Step-by-step
We apply:
�
1. Calculate LVOT area
Diameter = 2.4 cm → radius = 1.2 cm
2. Calculate stroke volume (SV)
3. Calculate AVA
✅ Final Answer:
C. 0.8 cm²
 Clinical insight
AVA < 1.0 cm² = severe aortic stenosis
This patient (0.8 cm² + symptoms) = severe, symptomatic → likely needs valve intervention (e.g. TAVI/SAVR)

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Tambahan untuk aortic stenosis

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Sama juga. Cuma dalam kes diatas disebut trivial aortic. Kalau severe aortic pulak haha. Tak tahu.

Mitral valve area X Mitral valve VTI = LVOT area x LVOT VTI