ECG transcript and results, how to read a cardiogram of the heart on your own

ECG decoding of an electrocardiogram is considered a complex process that only a diagnostician or cardiologist can do. They carry out deciphering, identifying various defects and disruptions in the work of the human heart muscle. This diagnostic method is widely used today in all medical institutions. The procedure can be done both in the clinic and in an ambulance.

Electrocardiography is a science in which the rules of the procedure are studied, how to decipher the results obtained and explains unclear points and situations. With the development of the Internet, ECG decoding can even be done independently, using special knowledge.

The electrocardiogram is deciphered by a special doctor-diagnostician, who uses the established procedure that determines normal indicators and their deviations.

Heart rate and heart rate are assessed. In a normal state, the rhythm should be sinus, and the frequency should be between 60 and 80 beats per minute.

The intervals are calculated, which characterize the duration of the moment of contraction. Special formulas apply here.

The normal interval (QT) is 390 - 450 ms. If the interval is violated, if it lengthens, the diagnostician may suspect the patient has atherosclerosis, rheumatism or myocarditis, as well as ischemic heart disease. Also, the interval may be reduced, and this indicates the presence of a disease of hypercalcemia. These parameters are calculated using a specialized automatic program that provides a reliable result.

The location of the EOS is calculated from the isoline along the height of the teeth. If the indicators are significantly higher than each other, a deviation of the axis is noticed, defects in the vital functions of the right or left ventricle are suspected.

The indicator showing the activity of the ventricles, the QRS complex, is formed during the passage of electrical impulses to the heart. It is considered normal when there is no defective Q wave and the distance does not exceed 120 ms. When the specified interval is displaced, it is customary to talk about a conduction defect, or it is also called a blockade of the bundle of His bundle. With incomplete blockade, RV or LV hypertrophy may be suspected depending on the location of the ECG line. The decoding describes the ST particles, which are reflectors of the recovery time of the initial position of the muscle relative to its complete depolarization. Normally, the segments should fall on the isoline, and the T wave, which characterizes the work of both ventricles, should be asymmetric and directed upward. It should be longer than the QRS complex.

When describing and decoding the diagnostic procedure, they describe various characteristics of the work of the heart muscle, which are indicated by numbers and Latin letters:

• PQ is an indicator of the time of atrioventricular conduction. In a healthy person, it is 0.12 - 0.2 s.
• R - a description of the work of the atria. It may well say about atrial hypertrophy. In a healthy person, the norm is 0.1 s.
• QRS - ventricular complex. In the normal state, the indicators are 0.06 - 0.1 s.
• QT is an indicator that can indicate cardiac ischemia, oxygen starvation, heart attack, and rhythm disturbances. The normal indicator should be no more than 0.45 s.
• RR - the gap between the superior points of the ventricles. Shows the constancy of heart contractions and allows you to count their frequency.

Cardiogram of the heart: interpretation and main diagnosed diseases

Decoding a cardiogram is a long process that depends on many indicators. Before decoding the cardiogram, it is necessary to understand all the deviations in the work of the heart muscle.

Atrial fibrillation is characterized by irregular muscle contractions that can be quite different. This violation is dictated by the fact that the clock is set not by the sinus node, as it should be in a healthy person, but by other cells. The heart rate in this case is between 350 and 700. In this condition, the ventricles are not fully filled with incoming blood, which leads to oxygen starvation, from which all organs in the human body suffer.

An analogue of this condition is atrial fibrillation. The pulse in this state will be either below normal (less than 60 beats per minute), or close to normal (60 to 90 beats per minute), or above the specified rate.

On the electrocardiogram, you can see frequent and constant contractions of the atria and, less often, of the ventricles (usually 200 per minute). This is atrial flutter, which often occurs already in the exacerbation phase. But at the same time, it is easier for the patient to tolerate than flickering. Circulatory defects in this case are less pronounced. Trepidation can develop as a result of surgery, for various diseases, such as heart failure or cardiomyopathy. At the time of examination of a person, flutter can be detected due to rapid rhythmic heartbeats and pulse, swollen veins in the neck, increased sweating, general impotence and shortness of breath.

Conduction disorder - this type of heart disorder is called blockade. The occurrence is often associated with functional disorders, but there are also the result of intoxication of a different nature (against the background of alcohol or taking medications), as well as various diseases.

There are several types of disorders that are shown by the cardiogram of the heart. Decoding of these violations is possible based on the results of the procedure.

Sinoatrial - with this type of blockade, there is a difficulty in leaving the impulse from the sinus node. As a result, there is a syndrome of weakness of the sinus node, a decrease in the number of contractions, defects in the circulatory system, and as a result, shortness of breath, general weakness of the body.

Atrioventricular (AV block) - characterized by a delay in excitation in the atrioventricular node longer than the set time (0.09 seconds). Several degrees of this type of blocking are distinguished here.

The number of contractions depends on the magnitude of the degree, which means that the defect in the blood flow is more difficult:

• I degree - any contraction of the atria is accompanied by an adequate number of contractions of the ventricles;
• II degree - a certain number of atrial contractions remains without ventricular compression;
• III degree (absolute transverse blockade) - the atria and ventricles contract independently of each other, which is well shown by the decoding of the cardiogram.

Conduction defect through the ventricles. An electromagnetic pulse from the ventricles to the muscles of the heart propagates through the trunks of the bundle of His, its legs and branches of the legs. Blockage can occur at every level, and this is immediately reflected in the electrocardiogram of the heart. In this situation, it is observed that the excitation of one of the ventricles is delayed, because the electrical impulse goes around the blockage. Doctors divide blockages into complete and incomplete, as well as permanent or non-permanent blockages.

Myocardial hypertrophy is well shown by a cardiogram of the heart. Decoding on the electrocardiogram - this condition shows a thickening of certain areas of the heart muscle and stretching of the chambers of the heart. This happens with regular chronic overloads of the body.

Next, let's talk about how to decipher the cardiogram by transformations of myocardial contractile function, there are several changes:

• Syndrome of early repolarization of the ventricles. Often, it is the norm for professional athletes and people with congenitally large body weight. It does not give a clinical picture and often passes without any changes, therefore, the interpretation of the ECG is complicated.
• Various diffuse disorders in the myocardium. They indicate a myocardial nutritional disorder as a result of dystrophy, inflammation or cardiosclerosis. Disorders are quite susceptible to treatment, often associated with a disorder of the body's water-electrolyte balance, taking medications, and heavy physical exertion.
• Non-individual ST changes. A clear symptom of a myocardial supply disorder, without bright oxygen starvation. Occurs during hormone imbalances and electrolyte imbalances.
• T wave distortion, ST depression, low T. The cat's back on the ECG shows the state of ischemia (oxygen deprivation of the myocardium).

In addition to the disorder itself, their position in the heart muscle is also described. The main feature of these disorders is their reversibility. The indicators, as a rule, are given for comparison with old studies in order to understand the patient's condition, since it is almost impossible to read the ECG yourself in this case. If a heart attack is suspected, additional studies are carried out.

There are three criteria by which a heart attack is characterized:

• Stage: acute, acute, subacute and cicatricial. Duration from 3 days to lifelong status.
• Volume: large-focal and small-focal.
• Location.

Whatever the heart attack, it is always a reason for placing a person under strict medical supervision, without any delay.

ECG results and options for describing heart rate

ECG results provide an opportunity to look at the state of the human heart. There are different ways to decipher the rhythm.

Sinus Is the most common signature on an electrocardiogram. If, in addition to heart rate, other indicators are not indicated, this is the most successful prognosis, which means that the heart is working well. This type of rhythm assumes a healthy state of the sinus node, as well as the conducting system. The presence of other records proves existing defects and deviations from the norm. There is also an atrial, ventricular or atrioventricular rhythm, which show which cells in specific parts of the heart set the rhythm.

Sinus arrhythmia - is often normal in young adults and children. This rhythm is characterized by an exit from the sinus node. However, the intervals between the contractions of the heart are different. This is more often associated with physiological disorders. Sinus arrhythmia should be closely monitored by a cardiologist to avoid the development of serious illnesses. This is especially true for persons with a predisposition to heart disease, as well as if the arrhythmia is caused by infectious diseases and heart defects.

Sinus bradycardia - characterized by rhythmic contraction of the heart muscle with a frequency of about 50 beats. In a healthy person, this condition can often be observed in a state of sleep. Such a rhythm can manifest itself in people who are professionally involved in sports. Their ECG waves are different from those of an ordinary person.

Persistent bradycardia can characterize the weakness of the sinus node, manifested in such cases by more rare contractions at any time of the day and in any condition. If a person has pauses in contractions, then a surgical intervention is prescribed to install a stimulator.

Extrasystole. This is a defect in rhythm, which is characterized by extraordinary contractions outside the sinus node, after which the ECG results show a pause of increased length, called compensatory. The patient feels the heartbeat as uneven, chaotic, too fast, or too slow. Sometimes patients are concerned about pauses in the heart rhythm. Often there is a tingling sensation or unpleasant tremors behind the breastbone, as well as a feeling of dread and emptiness in the stomach. Often, such conditions do not lead to complications and do not pose a threat to a person.

Sinus tachycardia - with this disorder, the frequency exceeds the normal 90 beats. There is a division into physiological and pathological. Physiological means the onset of such a state in a healthy person with certain physical or emotional stress.

It can be observed after taking alcoholic beverages, coffee, energy drinks. In this case, the condition is temporary and passes rather quickly. The pathological form of this condition is characterized by periodic heartbeats that disturb a person at rest.

The causes of the pathological appearance can be increased body temperature, various infectious diseases, blood loss, a long stay without water, anemia, etc. Doctors deal with the treatment of the underlying disease, and tachycardia is stopped only with a heart attack in a patient or acute coronary syndrome.

Paroxysmal tachycardia - in this condition, a person has a rapid heartbeat, expressed in an attack lasting from several minutes to several days. The pulse can increase up to 250 beats per minute. There are ventricular and supraventricular forms of such tachycardia. The main reason for this condition is a defect in the passage of an electric pulse in a conducting system. This pathology is quite susceptible to treatment.

You can also stop an attack at home using:

• Holding your breath.
• Forced cough.
• Immersion in cold water of the face.

WPW syndrome Is a subspecies of supraventricular tachycardia. The main provocateur of an attack is an additional nerve bundle, which is located between the atria and ventricles. To eliminate this defect, surgery or medication is required.

CLC - is extremely similar to the previous type of pathology. The presence of an additional nerve bundle here contributes to the early excitation of the ventricles. The syndrome, as a rule, is congenital and manifests itself in a person with attacks of an accelerated rhythm, which is very well shown by the ECG waves.

Atrial fibrillation - may have seizures or be persistent. A person feels pronounced atrial flutter.

ECG of a healthy person and signs of changes

The ECG of a healthy person includes many indicators by which a person's health is judged. An ECG of the heart plays a very important role in the process of detecting abnormalities in the work of the heart, the most terrible of which is myocardial infarction. Exclusively with the help of electrocardiogram data, necrotic zones of a heart attack can be diagnosed. Electrocardiography also determines the depth of damage to the heart muscle.

ECG norms of a healthy person: men and women

ECG standards for children

An ECG of the heart is of great importance in diagnosing pathologies. The most dangerous heart disease is myocardial infarction. Only an electrocardiogram will be able to recognize the necrotic zones of a heart attack.

Signs of myocardial infarction on the ECG include:

• the zone of necrosis is accompanied by changes in the Q-R-S complex, resulting in a deep Q wave;
• the damage zone is characterized by a displacement (elevation) of the S-T segment, smoothing the R wave;
• the ischemic zone changes the amplitude and makes the T wave negative.

Electrocardiography also determines the depth of damage to the heart muscle.

How to decipher a cardiogram of the heart yourself

Not everyone knows how to decipher the cardiogram of the heart on their own. However, with a good understanding of the indicators, you can independently decipher the ECG and detect changes in the normal functioning of the heart.

First of all, it is worth determining the heart rate indicators. Normally, the heart rhythm should be sinus, the rest talk about the possible development of arrhythmia. Changes in sinus rhythm, or heart rate, suggest tachycardia (faster rhythm) or bradycardia (slowing down).

Abnormal data of teeth and intervals are also important, since you can read the cardiogram of the heart yourself according to their indicators:

1. Prolongation of the QT interval indicates the development of coronary heart disease, rheumatic disease, sclerotic disorders. Shortening of the interval indicates hypercalcemia.
2. The altered Q wave is a signal of myocardial dysfunction.
3. Sharpening and increased height of the R wave indicates right ventricular hypertrophy.
4. A split and widened P wave indicates left atrial hypertrophy.
5. An increase in the PQ interval and impaired conduction of impulses occurs with atrioventricular block.
6. The degree of deviation from the isoline in the R-ST segment diagnoses myocardial ischemia.
7. The elevation of the ST segment above the isoline is a threat of acute infarction; a decrease in the segment registers ischemia.

There is another method, how to read the cardiogram of the heart yourself. This requires an electrocardiographic ruler. It helps to decipher the ECG at a speed of 25 mm / s or 50 mm / s.

The cardiometer consists of divisions (scales) that determine:

• heart rate (HR);
• QT interval;
• millivolts;
• isoelectric lines;
• duration of intervals and segments.

This simple and easy-to-use device is useful for everyone to decode the ECG on their own.