What factors affect the values ​​of the ejection fraction?

Since the values ​​of the ejection fraction deal with the pumping action of the chambers, any condition that reduces this activity affects values. Ineffective blood circulation to the heart or ineffective filling of the chamber combined with defective valves, weakened muscle tissue or tissue death contributes to the amount of blood leaving the heart. Cardiologists generally use imaging studies to evaluate the effect of heart and ejection fraction. Treatment depends on the cause of low values. The volume of stroke is the amount of blood drained from the heart with every heart rhythm. The final diastolic volume is the total volume contained in the left chamber between cardiac rhythms or before the rhythm occurs. An example of the end diastolic volume is a healthy fill of the left ventricle per total volume of 120 milliliters. During the rhythm, a stoke -leaving tsrdce bundle can be 75 milliliters of blood.

Calculation of the value of the ejection fraction is then the volume of stroke divided by concoDiastolic volume or 75/120, which is equal to 0.62 or 62%. Normal values ​​of the ejection fraction range from 50% to 75% and differ depending on the time of day or physical activity. Problems occur when this percentage falls below 50%. When the chamber does not fulfill properly, the heart does not squeeze into the body sufficient blood supply. This may happen in the presence of a valve disease in which inefficient closure between the chambers causes blood to back up to the atrium.

doctors refer to ineffective closing of the valve as regurgitation of the mitral valve, for which patients may require repair or alternative valve surgery. Tachycardic rhythms or heart rate exceeding 100 rhythms per minute cause the heart to beat so quickly that the chambers do not have enough time to fill. This dysrophytmia may occur due to excessive stimulation of the sympathetic nervous system or the wrong function of the heart electrical system known as ventricular dysynchronia. Patients who have this problem may requestAdvate resynchronization using defibrillator implants.

normally, heart tissue fibers expand to suit the filling of the chamber. The weakening of the fibers caused by hypertension eventually causes enlargement in the left chamber to the extent that the pumping action becomes ineffective. The values ​​of the ejection fraction decrease again. Patients who have this condition known as the left ventricular hypertrophy often require lifestyle and dietary treatment. Healthcare providers can also prescribe medicines that reduce excess fluid, relax vascular tissue and slow the heart.