
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 …
Tricuspid valve regurgitation - Symptoms and causes - Mayo Clinic
Mar 12, 2024 · The condition also may be called: Tricuspid regurgitation. Tricuspid insufficiency. Some people are born with heart valve disease that leads to tricuspid regurgitation. This is …
Heart failure with preserved ejection fraction (HFpEF): More than ...
May 20, 2015 · 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 …
Fracción de eyección: un estudio importante del corazón
Jul 2, 2025 · La fracción de eyección es una medida del porcentaje de sangre que sale del corazón cada vez que se comprime. Cuando el corazón se comprime, se llama contracción. …
Mitral valve regurgitation - Symptoms and causes - Mayo Clinic
Overview Mitral valve regurgitation is the most common type of heart valve disease. In this condition, the valve between the left heart chambers doesn't close fully. Blood leaks backward …
Aortic valve regurgitation - Symptoms and causes - Mayo Clinic
Oct 4, 2023 · The aortic valve is one of four valves that control blood flow through the heart. It separates the heart's main pumping chamber, called the left ventricle, and the body's main …
Ventricular tachycardia - Symptoms and causes - Mayo Clinic
Mar 6, 2024 · Ventricular tachycardia is a type of irregular heartbeat, called an arrhythmia. It starts in the lower chambers of the heart, called the ventricles. This condition also may be called V …
HIDA scan - Mayo Clinic
Jun 17, 2025 · For a HIDA scan, also known as cholescintigraphy or hepatobiliary scintigraphy, a radioactive tracer is injected into a vein in the arm. The tracer travels through the bloodstream …
Meningococcal vaccine (intramuscular route) - Side effects & uses
Apr 1, 2025 · Description Meningococcal vaccine is an active immunizing agent used to prevent infection caused by certain groups (A, B, C, W, and Y) of meningococcal bacteria (Neisseria …
Heart failure - Symptoms and causes - Mayo Clinic
Jan 21, 2025 · Proper treatment may improve the symptoms of heart failure and may help some people live longer. Lifestyle changes can improve quality of life. Try to lose weight, exercise, …