The principle of heart beating, what is the principle of heart beating?

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Pictured: The discovery of prehistoric elemental aggregate bronze stone is enough to prove that the element has a magical and special function.

The beating principle of the heart is that different elements are gathered into different monofunctional cells, and many monofunctional cells are combined into a complete heart organ, which combines with other livers, lungs, kidneys, etc. to form a complete living body.

These organs are in different locations and each has a different functional role. The functional cells of the heart are constantly pumping, forming a tireless [beating] power pump, which circulates blood (nutrients) to various organs and keeps life alive.

The functional cells of the heart contain a trace amount of quartz mineral element, (quartz is also used in computers, mobile phones and other electrical appliances,) this mineral element generates a pulse circuit of its own, which prompts the cells of the heart organs to contract automatically and form a tired beating heart pump.

Miraculous organs, incredible special functions, the beating principle of the heart, the lungs inject oxygen from the air into the blood to supply the organs of the whole body, the ears listen to sounds, the eyes sense light to form images and transmit them to the brain, etc.! In short, it is the incredible miracle that the elements do!

Pictured: Bronze stone, a collection of prehistoric elements, was found.

When the atrium perceives the electrical activity of the sinus node, it will cause atrial contraction, and when the atrial contraction will pump the blood of the atrium to the ventricle, and then the ventricular contraction will occur, and the blood of the ventricle will be pumped out of the heart when the ventricle contractions, and the blood of the ventricles will be pumped out of the heart when the ventricles contract, so as to complete a complete heartbeat activity. The blood of the right atrium will be pumped into the right ventricle, and when the right ventricle contracts, the venous blood will be pumped to the pulmonary artery, because the oxygen inhaled from the lungs, the venous blood and oxygen can be combined to become arterial blood, after the left atrium collects arterial blood, when the left atrium contracts, the arterial blood in the left atrium will be pumped into the left ventricle, and when the left ventricle contracts, the arterial blood will be pumped to the aorta and its important branches, and blood and oxygen will be supplied to various organs.

Rhythmic action potentials are generated in the cells of the sinus node, and this electrical impulse is transmitted to all parts of the myocardium through the heart's electrical network: the sinus node, the atrioventricular node, the internodal bundle, and the fibers of the heart. After receiving this electrical impulse, the cardiomyocyte depolarizes, produces contraction, and achieves depolarization through the circulation of charged ions inside and outside the cell - myocardial relaxation, and then receives the next electrical impulse from the sinus node, and contracts and relaxes again, forming a regular heartbeat.

Normally, the sinus atrial impulse rhythm is faster, which inhibits the slower impulsivity of the atrioventricular node.

A pacemaker consists of a battery, a pulse generator (chip controlled), leads, and electrodes. The battery powers the pulser, and the two are encapsulated in a very thin metal box. The pulse generator is connected to the heart by wires.

A pacemaker's pulse generator is capable of sending out electrical impulses that correct the rhythm of the heart's beat. A computer chip can determine the type of pulse sent to the heart and when it needs to be sent. The computer chip has this ability because it processes information from different sources, including information from the heart (through wires directly connected to the heart), motion information measured by sensors, blood temperature, respiration, and other factors that measure a patient's level of exercise.

Note: Exercise can make a person's heart beat faster.

The computer chip is also able to record the heart's electrical activity and heartbeat rhythm. Based on these records, the pacemaker is set up to work optimally so that the patient's heart rhythm is normal. Doctors can program the computer inside the pacemaker without even having a needle or direct contact with it.

The main function of the internal wires of the pacemaker is the bidirectional transmission of electrical impulses between the heart and the pacemaker. Pacemakers typically have 1 to 3 wires, each of which is connected to a different chamber of the heart.

The wires of a single-chamber pacemaker are mainly used to connect the right ventricle (the chamber in the lower right side of the heart) and the pulse generator.

A dual-chamber pacemaker has two wires extending from the pulse generator, one to the right atrium and one to the right ventricle. The pulses emitted are used to correct the timing of contractions between the two chambers of the heart.

Three-chamber pacemakers are mainly used in patients with weakened heart muscles, and this is a pulse generator that extends three wires, one to the atria and the other two to the two ventricles. The electrical impulses from the pulse generator coordinate the contraction sequence of the two ventricles.

A pacemaker is a multi-component system, including a system implanted in the human body and an extracorporeal programmable system. The system implanted in the human body consists of a pacing lead and a pulse generator, and the wire is a special soft metal wire with a diameter of millimeters wrapped with an insulating layer, which is punctured and cut into the human vein and sent into the heart; The pulse, at the heart of the pacing system, is a microcomputer with a tightly wrapped alloy casing containing a battery, weighing in grams, the size of a small piece of chocolate and half a matchbox, connected to a wire.

Such as water pumps. Pressurization, induction, reflux, circulation.

There is a special small nodule on the right atrium of the human body, which is made up of special cells called the sinus node. It automatically and rhythmically generates an electric current that is transmitted to various parts of the heart in the order of conduction tissue, causing contraction and relaxation of cardiomyocytes.

The sinus node is the highest "command" of the heartbeat, so a normal heart must have a normal sinus node, and a normal sinus node has strong automaticity. The heart rhythm formed by the agitation of the sinus node is collectively called sinus rhythm. The frequency of the sinus node is 60,100 beats per minute, but the heart rate of 25% of young people is 50,60 beats, and it can exceed 100 beats for children before the age of 6 and 100,150 beats for newborn babies.

The heart is pounding, and it feels like the heart is about to jump out of the throat, and you need to prevent premature beats.

Hello, the heart of a normal person is always beating rhythmically, and the part that controls the heart to beat rhythmically is the sinus node of the heart. The heart rhythm that arises from the sinus node is called sinus rhythm.

This friend: A heart beat is a rhythmic contraction of the heart. The heart beat of higher vertebrates such as humans begins throughout diastole.

When the heart is in diastole, blood from the superior and inferior vena cava and pulmonary veins is perfused into the atria and ventricles, respectively. At the end of diastole, the left and right atria contract almost simultaneously, further sending blood from the atria into the ventricles. Subsequently, the ventricles begin to contract, and the intraventricular pressure rises sharply, pushing the left and right atrioventricular valves to close.

However, while the intraventricular pressure has not exceeded the intra-arterial pressure, both the aortic and pulmonary valves are closed, so the blood in the ventricles is pressurized without leaving the arterial pressure, and the internal pressure continues to rise. When the intraventricular pressure exceeds the intra-arterial pressure, both valves can be pushed open and blood is squeezed into the artery. Then the heart relaxes again and begins to prepare for the next cycle.

In this way, the heart repeatedly relaxes and contracts, constantly pressing blood into the arteries, creating the hydrodynamic force of the blood.

This complex pattern of pulsation is directed by the sinus node, which is located on the adventitia of the right atrium. The sinus node is the highest "command" of the heart's beat, which can automatically and rhythmically generate electrical excitatory signals, which are transmitted to all parts of the heart in the order of conduction tissues (sinus node, atrioventricular node, atrioventricular bundle branches, left and right atrioventricular tract branches, and many small branches of the ventricular wall), thus causing regular contraction and relaxation of cardiomyocytes in the atria and ventricles.

(1) VVI mode.

It is the most basic cardiac pacing method, and the advantages are simple, convenient, economical and reliable. Suitable for: General slow ventricular rate, no structural heart disease, good cardiac function; Intermittent ventricular rate with slow and long r-r intervals.

However, it is not suitable for use in the following conditions: blood pressure drops by more than 20mmHg during VVI pacing; cardiac dyscompensation; Pacemaker syndrome is known to be associated with VVI pacing interfering with atrioventricular sequential contraction and decreased cardiac output due to atrial retrograde transmission.

2) AAI method.

The advantages of simplicity, convenience, economy and reliability can be compared with the VVI method, and can maintain the sequential contraction of the atrioventricle, which is a physiological pacing, suitable for China's national conditions, and suitable for sinus syndrome with normal atrioventricular conduction function. Those who are not suitable for use: those with atrioventricular conduction disorders, including those with the potential for occurrence (atrial pacing test); Chronic atrial fibrillation.

3) DDD mode.

It is the most complete pacing and perceiving function of the atria and ventricles in the dual-chamber pacemaker, so it is called atrioventricular totipotency. However, it is not as convenient and economical as a single-chamber pacemaker, and is suitable for atrioventricular block with or without sinus node dysfunction. Not suitable for application: chronic atrial fibrillation atrial flutter.

4) Frequency adaptive (R) mode.

The pacemaker can automatically adjust the pacing frequency by sensing body movement and blood pH to judge the body's need for cardiac output to improve the body's exercise tolerance, and is suitable for: people who need to engage in moderate to severe physical activity. VVIR, AAIR, and DDDR modes can be selected according to specific conditions.

However, if symptoms such as palpitations worsen after the heart rate increases, or if the symptoms of heart failure or angina are aggravated, the frequency adaptive pacemaker should not be used.