Is cardiac arrest dangerous?

In daily life, intermittent cardiac arrest is a common heart disease for many people. The heart is a relatively important organ in the human body. If there is a problem with the heart, it will easily lead to some heart diseases, which is very harmful to physical health. Intermittent cardiac arrest is very dangerous to the body and needs to be checked and treated in time.

Is intermittent cardiac arrest dangerous?

Intermittent heartbeats are definitely dangerous to life, and may cause intermittent blood supply, and may also easily cause shock or coma! Pay attention to your daily exercise and heart-stimulating diet.

The heart is one of the most important organs in the vertebrate body. Its main function is to provide pressure for blood flow and circulate blood to all parts of the body. The human heart is located in the lower left middle of the chest cavity. It is about the size of a fist and weighs about 250 grams. Women's hearts are generally smaller and lighter than men's. The human heart is shaped like a peach and is located above the diaphragm, between the two lungs and slightly to the left.

The heart is composed of myocardium and four chambers: left atrium, left ventricle, right atrium, and right ventricle.

The left and right atria and the left and right ventricles are separated by septa, so they are not connected to each other. There are valves (atrioventricular valves) between the atria and ventricles. These valves prevent blood from flowing from the atria to the ventricles and not flowing back.

The function of the heart is to promote blood flow, provide sufficient blood flow to organs and tissues to supply oxygen and various nutrients, and take away the end products of metabolism (such as carbon dioxide, inorganic salts, urea and uric acid, etc.) so that cells maintain normal metabolism and function.

Mammals and birds have two atria and two ventricles; reptiles also have two atria and two ventricles, but the two ventricles are not completely separated; amphibians have two atria and one ventricle; and fish have only one atrium and one ventricle.

Location

The heart is located in the chest cavity, between the two lungs above the diaphragm, about two-thirds to the left of the midline. The heart is like an inverted, slightly flattened cone at the front and back, like a peach. The blunt round apex of the heart faces the left front and lower side, close to the anterior chest wall, and its surface projection is 0.5-1.0 cm inside the midclavicular line in the fifth intercostal space of the left anterior chest wall, so the apex beat can be seen or felt here. The base of the heart is wide, with large blood vessels entering and exiting it, heading towards the upper right posterior side, adjacent to the esophagus and other organs in the posterior mediastinum.

shape

The heart is shaped like a peach and is about the same size as an adult's fist.

A slightly flattened inverted cone with its tip pointing to the lower left front and its base pointing to the upper right rear. The shape of the heart can be divided into the front, back, side, left edge, right edge and lower edge (ie: one tip, one bottom, three sides and three edges).

1. Apex of the heart: It faces the left front and lower side, is located in the fifth intercostal space on the left side, 1 to 2 cm inside the midclavicular line.

Terminology: The apex of the heart is formed by the left ventricle. Because the apex of the heart is close to the chest wall, the apex pulsation can often be seen or felt in the fifth intercostal space on the left side of the anterior chest wall.

2. Base of the heart: Towards the upper right rear side, it is connected to the large blood vessels entering and leaving the heart and is the relatively fixed part of the heart.

Terminology: Most of the heart base is made up of the left atrium, and a small part is made up of the right atrium. The four pulmonary veins are connected to the left atrium, and the superior and inferior vena cava open at the upper and lower parts of the right atrium respectively. Between the superior and inferior vena cava and the right pulmonary vein is the interatrial groove, which marks the posterior boundary between the left and right atria.

3. Three sides: If divided into two sides, the sternocostal surface (front) of the heart faces forward and upward, and most of it is composed of the right ventricle. The diaphragmatic surface (lower side) faces posteriorly and inferiorly, and is mostly composed of the left ventricle, which is close to the diaphragm.

Divided into three sides: the front part of the heart is composed of the upper right atrial part, most of which is the right atrium, and the left atrial appendage only constitutes a small part of it; the lower left part is the ventricular part, 2/3 of which is the anterior wall of the right ventricle, and 1/3 is the left ventricle. It is attached to the diaphragm at the back and is mainly composed of the left ventricle. The side (left side) is mainly composed of the left ventricle, with only a small upper part composed of the left atrium.

4. Three edges: The right edge of the heart runs vertically downward and is composed of the right atrium. The left edge of the heart is blunt and round, mainly composed of the left ventricle and a small part of the left atrial appendage. The lower edge of the heart is nearly horizontal, composed of the right ventricle and the apex.