MRCP UK EXAMINATIONS

CARDIOLOGY

PROSTHETIC HEART VALVES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
If the peak PG across the stenotic pulmonic valve is 50 mmHg, what is the degree of PS?
A
mild
B
moderate
C
severe
D
not enough data
Explanation: 

Detailed explanation-1: -It is classified into: Mild: Peak velocity less than 3m/s and peak gradient is less than 36 mm Hg. Moderate: Peak velocity is 3 to 4m/s and peak gradient is 36 to 64mm Hg.

Detailed explanation-2: -Mild pulmonary stenosis is when the pressure difference is less than 30-40 mmHg, moderate pulmonary stenosis is when the pressure is 40 to 60 mmHg, and severe pulmonary stenosis is when the pressure is greater than 60-70 mmHg.

Detailed explanation-3: -The degree of stenosis is generally classified based on the pressure drop across the pulmonic valve with mild stenosis defined as a gradient less than 30 mmHg, moderate stenosis as a gradient of 30–60 mmHg, and severe stenosis as higher than 60 mmHg.

Detailed explanation-4: -The systolic pulmonary artery pressure (PA pressure, PASP) can be estimated by subtracting the pressure gradient across the valve (P) from right intraventricular pressure.

There is 1 question to complete.