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・ EJE Bridge over Shell Creek
・ Eje Central
・ Eje Comunero
・ Eje Elgh
・ Eje Thelin
・ Eje vial
・ Ejea de los Caballeros
・ Eject (Transformers)
・ Ejecta
・ Ejecta (disambiguation)
・ Ejecta (film)
・ Ejecta blanket
・ Ejection
・ Ejection (sports)
・ Ejection charge
Ejection fraction
・ Ejection seat
・ Ejective click
・ Ejective consonant
・ Ejective-contour clicks
・ Ejectment
・ Ejector (disambiguation)
・ Ejector pins
・ Ejector Seat
・ Ejector seat (disambiguation)
・ Ejector Seat Reservation
・ Ejector venturi scrubber
・ Ejectosome
・ Eject→Out
・ Ejeda


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Ejection fraction : ウィキペディア英語版
Ejection fraction
Ejection fraction (EF) is the fraction of outbound blood pumped from the heart with each heartbeat. It is commonly measured by echocardiogram and serves as a general measure of a person's cardiac function. Ejection fraction is typically low in patients with Systolic congestive heart failure.
Ejection fraction is a similar but distinct mathematical model when compared to stroke volume, which (along with heart rate) determines cardiac output, which is the amount of blood the heart pumps per minute. Mathematical models of Volume vs. Time are well documented in the encyclopedia.
==Medical uses==
Ejection fraction is an important determinant of the severity of systolic heart failure. Causes and etiologies of systolic heart failure include coronary artery disease, congenital heart disease, valvular heart disease, conduction disease, infectious disease, and granulomatous disease among others.
Unlike heart rate, which can be high or low in a healthy person and can vary over the course of the day, a low ejection fraction is always associated with disease.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
ウィキペディアで「Ejection fraction」の詳細全文を読む



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