heart weight gain
Introduction
Introduction The weight of the various tissues that make up the heart. The newborn is 20 to 25 g, which is 2 times at the age of 1 year, 4 times at birth at 5 years old, 6 times at 9 years old, and 12 to 14 times after puberty, close to the adult level.
Cause
Cause
The development of hypertension is divided into three phases, functional disorders, arterial lesions and visceral lesions. In the third phase, the main manifestation of heart disease is left ventricular hypertrophy. As the blood pressure continues to rise, the peripheral resistance increases, and the left ventricle undergoes compensatory hypertrophy due to the increased pressure load. Because the left ventricular compensatory ability is very strong, it is quite For a long time, the heart is constantly hypertrophied for compensation, the left ventricular wall is thickened, the papillary muscles and the meat column are thickened and rounded, but the heart chamber does not expand, which is called centripetal hypertrophy. The lesion continues to develop, the hypertrophic myocardium is reduced due to insufficient blood supply, and the decompensation occurs, and the heart expands gradually, which is called eccentric hypertrophy.
Examine
an examination
Related inspection
ECG dynamic electrocardiogram (Holter monitoring)
As the blood pressure continues to rise, the peripheral resistance increases, and the left ventricle undergoes compensatory hypertrophy due to an increase in the stress load.
Diagnosis
Differential diagnosis
The diagnosis should be differentiated from the following symptoms:
Cardiac hypertrophy
Our heart size is related to height and weight, and its size is about the same size as our fist. From the chest X-ray we can see the heart in the middle of the chest to the left. The width of the normal heart accounts for less than 50% of the width of the chest (cardiopulmonary ratio). Because the chest X-ray measurement of cardiopulmonary ratio is often affected by the lack of inspiratory volume of the subject, sometimes causing relative heart hypertrophy, in fact, the heart is not hypertrophic; the radio wave height of the ECG can also tell us whether there is heart hypertrophy, Usually high radio waves indicate that there may be heart hypertrophy. To accurately measure the size of the heart, cardiac ultrasound is a great tool for measuring the size of each cavity of the heart (such as the left and right atrium, left and right ventricles), as well as the thickness of the left ventricular muscle. It can also tell us by the way the function of the heart valve, whether the heart muscle has lesions, and the function of the left ventricle.
2. Heart enlargement
Cardiac enlargement is one of the important signs of organic heart disease, which can be caused by heart expansion and/or cardiac hypertrophy. Clinically simple heart dilatation or hypertrophy is rare, and in most cases, both often exist simultaneously. The enlargement of the viscera may be an increase in a single ventricle or atrium, or may be a limitation or a general increase.
As the blood pressure continues to rise, the peripheral resistance increases, and the left ventricle undergoes compensatory hypertrophy due to an increase in the stress load.
