Normal range of heart failure index

Heart failure is particularly harmful to patients. When symptoms occur, you should go to the hospital for examination in time. You should understand the normal range of heart failure index to avoid continued harm to your health. Through investigation, it is found that more than 55% of patients with heart failure have ejection fraction within the normal range. Therefore, in this regard, timely diagnosis must be made to avoid misdiagnosis and avoid greater harm to the patient's health.

What is the normal index of heart failure?

1. It is estimated that about 50% of heart failure patients have an ejection fraction within the normal range, which is currently generally referred to as heart failure with normal left ventricular ejection fraction (HFNEF). Epidemiological studies and clinical trials have treated this group of patients as a separate group, and the few detailed studies that have been conducted have shown that the clinical picture of HFNEF patients varies greatly and is caused by a variety of important pathophysiological mechanisms.

2. It is generally accepted that clinical symptoms of heart failure can occur in patients with normal left ventricular ejection fraction (LVEF), and this view is now called heart failure with normal left ventricular ejection fraction (HFNEF). In some cases, patients present with clinical symptoms as severe as those with heart failure and low ejection fraction, such as patients admitted to the hospital with acute pulmonary edema.

3. Regarding the clinical characteristics of HFNEF patients, the physiological and neurohormonal changes in stable HFNEF patients are roughly the same as those in patients with low ejection fraction, including decreased peak oxygen consumption and increased levels of circulating neurohormones such as brain natriuretic peptide (BNP) and norepinephrine.

Avoid triggers

Infection is a common cause of heart failure, so patients with chronic heart failure, regardless of the type of infection, need to use adequate antibiotics early. Some weak patients have atypical symptoms when infected, and their body temperature may not be very high. They only show symptoms such as poor appetite and fatigue. The changes in their condition should be closely observed to prevent the occurrence of heart failure.

Take a break

Rest is an important way to reduce the burden on the heart. It can significantly reduce the body's oxygen consumption, increase blood supply to the kidneys, and help reduce edema. In addition to a nap, it is advisable to add a few hours of bed rest in the afternoon. In the acute stage and severe heart failure, you should rest in bed. After your heart function improves, you should get out of bed and do some walking, qigong, tai chi and other activities. However, you should control the amount of activity. When the pulse is greater than 110 beats/minute, or 20 beats/minute faster than resting, or when you feel palpitations, shortness of breath, angina pectoris or abnormal beats, you should stop the activity and rest.

In conclusion, the existence of HFNEF is now generally accepted. However, there is still much debate about its mechanism. This uncertainty in the mechanism of occurrence is reflected in the change in its name, from the physiologically descriptive name "diastolic heart failure" to the more descriptive name "heart failure with normal ejection fraction". This article summarizes the clinical situation and pathophysiological mechanisms of HFNEF patients and provides guidance for the diagnosis and treatment of HFNEF.