aortic stenosis

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What are the symptoms of aortic stenosis?
主动脉狭窄可能是必要的。
Activity may be limited in children who have moderate aortic stenosis prior to repair. For instance, competitive sports that require endurance may be restricted.
中等程度的主动脉狭窄的患儿在手术前可能要限制活动。例如，需要耐力的竞争性运动可能要限制。
A total of 358 patients with severe aortic stenosis, a heart disease characterized by obstruction of the aortic valve due to calcification, participated in the trial.
总计358名伴严重主动脉瓣狭窄（特征为因钙化主动脉瓣梗阻的一种心脏病）患者参加了这项实验。

Without surgery, however, the patients with severe aortic stenosis invariably decline and risks of death are quite high.
FORBES: Breakthrough Heart Valves: How Will Patients Decide?
But there is at least a theoretical reason that Zetia might succeed in aortic stenosis where statins have not.
FORBES: Another Blow For Merck And Schering
"Overall, I'm very pleased with the fact that intense cholesterol lowering reduces coronary events in patients with aortic stenosis, " said Braunwald.
FORBES: Another Blow For Merck And Schering

a narrowing of the heart valve that supplies the aorta (= the body's largest artery), reducing the blood flow to the aorta