2025年1月29日 · 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 your healthcare professional may use to see how your heart works. The heart squeezes and relaxes. When the heart squeezes, it pumps out — or ejects — blood from the …

2021年11月13日 · Pericardial effusion may not cause any noticeable signs and symptoms, particularly if the fluid has increased slowly. If pericardial effusion signs and symptoms do occur, they might include: Shortness of breath or difficulty breathing (dyspnea) Discomfort when breathing while lying down Chest pain, usually behind the breastbone or on the left side of the …

2015年5月20日 · Nearly half of all patients with heart failure have a normal ejection fraction (EF). The prevalence of this syndrome, termed heart failure with preserved ejection fraction (HFpEF), continues to increase in the developed world, likely because of the increasing prevalence of common risk factors, including older age, female sex, hypertension, metabolic syndrome, renal …

2024年6月11日 · Overview A computerized tomography (CT) coronary angiogram is an imaging test that looks at the arteries that supply blood to the heart. A CT coronary angiogram uses a powerful X-ray machine to make images of the heart and its blood vessels. The test is used to diagnose many different heart conditions.

2025年2月1日 · Description Metoprolol is used alone or together with other medicines to treat high blood pressure (hypertension). High blood pressure adds to the workload of the heart and arteries. If it continues for a long time, the heart and arteries may not function properly. This can damage the blood vessels of the brain, heart, and kidneys, resulting in a stroke, heart failure, …

2025年4月1日 · Description Methylphenidate is used to treat attention deficit hyperactivity disorder (ADHD). It belongs to the group of medicines called central nervous system (CNS) stimulants. Methylphenidate is also used to treat narcolepsy. Narcolepsy is an uncontrollable desire for sleep or a sudden attack of deep sleep. Methylphenidate works in the treatment of ADHD by …

Description Ivermectin is used to treat river blindness (onchocerciasis), intestinal infection from threadworms (strongyloidiasis), and other kinds of worm infections. Ivermectin is an anthelmintic. It works by interfering with the nerve and muscle functions of worms, by paralyzing and killing them. This medicine is available only with your doctor's prescription.

2019年6月1日 · Mayo researchers use convolutional neural networks to analyze electrocardiograms for silent subclinical, metabolic or structural abnormalities that may predict the presence of asymptomatic left ventricular dysfunction.

2025年2月1日 · Description Montelukast is used to treat and prevent asthma. It will decrease the symptoms and the number of acute asthma attacks. However, this medicine should not be used to relieve an asthma attack that has already started. This medicine is also used to prevent exercise-induced bronchoconstriction (EIB) and treat symptoms of allergic rhinitis (hay fever), including …

2024年11月12日 · An echocardiogram uses sound waves to show how blood flows through the heart and heart valves. Sensors attached to the chest and sometimes the legs check the heart rhythm during the test. The test can help a healthcare professional diagnose heart conditions.