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Ejection fraction: An important heart test - Mayo Clinic

Jan 29, 2025 · Ejection fraction is a measurement of the percentage of blood leaving the heart each time it squeezes. When the heart squeezes, it's called a contraction. Ejection fraction is just one of many tests you...

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Dilated cardiomyopathy - Symptoms & causes - Mayo Clinic

May 4, 2022 · Dilated cardiomyopathy is a type of heart muscle disease that causes the heart chambers (ventricles) to thin and stretch, growing larger. It typically starts in the heart's main pumping chamber (left ven...

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Dilated cardiomyopathy - Diagnosis & treatment - Mayo Clinic

May 4, 2022 · Treatment of dilated cardiomyopathy depends on the causes. The goals of treatment are to reduce symptoms, improve blood flow and prevent further heart damage. Dilated cardiomyopathy treatment may include...

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Hypoplastic left heart syndrome - Symptoms and causes

Jan 21, 2025 · Overview Hypoplastic left heart syndrome (HLHS) is a rare heart condition that a child is born with. That means it's a congenital heart defect. In this condition, the left side of the heart doesn't deve...

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射血分数:重要的心脏检查 - 妙佑医疗国际

May 10, 2025 · 左心室(LV)射血分数约 50% 至 70% 为正常。 LV 射血分数轻度降低通常介于 41% 至 49% 之间。 LV 射血分数降低通常是在 40% 或以下。 即使射血分数正常,整体心脏功能也可能不健康。如果担心自己的心脏,请咨询医疗护理专业人员。 可能导致射血分数降低的一些因素包括: 心肌无力,例如心肌病 ...

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Nuclear stress test - Mayo Clinic

Dec 3, 2024 · A nuclear stress test is one of several types of stress tests. It may be done after a regular exercise stress test. Sometimes it is the first stress test used. If you have coronary artery disease, a nucl...