Cardiac block: types, causes, symptoms, treatment (2023)

Herzblock is an interruption of the electrical signals that control your heart.

His heart depends on a constant current of electrical signals that begin in the upper heart of the heart (atrium).The heart towards the lungs and the rest of the body.Herzblock occurs when this electrical activity disturbs between the atria and the ventricles.

A heart block is often the result of a heart attack or other heart injury, but can have other causes.If the heart block is lower, the treatment may not be necessary.If it is more serious, it is possible that a pacemaker is possible to restore healthy electrical activity in the heart.

Read on to learn about the types of heartbeat, causes, symptoms and joint treatments.

A heart block, which is also referred to as Auricricular Block (AV), becomes depending on how heavy the electrical blockade between the cameras of the upper and lower heart is.

First class

The electrical signals slow down in the first degree when they move from the cameras that are superior to the lower heart of the heart.However, the signals do not even stop at times.

The heart block of first degree is more common inAdults over 60 yearsWith about 6% of this population.The prevalence of the first degree in humans under the age of 60 is 1% to 1.5%.

Second grade

The heart block of second degree is classified in two ways: type I and type II.

(Video) Heart blocks: Pathology Review

  • Tip in: This is also known as Mobitz type I or the Wenckebach AV block.It is a less heavy form of second degree of heart locking and is characterized by slowly slower electrical activity to the point where the heart beats.
  • Tip II: Also known as Mobitz type II, this occurs if more and more electrical signals do not reach the ventricles.This leads to a slower and a more abnormal pace.Type II is more common withStructural heart disease, such as myocardial fibrosis, a disease that implies the thickening of the heart muscle tissue, which is triggered by high blood pressure or heart disease.

Third degree

Third grade's heart's block is more serious than the other types.This means that the electricity signal of the atrial is completely blocked in order to reach the ventricles.

As a result, the ventricles often begin to beat alone.The clock is much slower and irregular, which makes it difficult for the heart to pump enough blood to meet the requirements of the body.This can lead to a very slow pulse or a very slow pulse.Not absolutely pulse.

The third cardiac block of the degree is rare, which affectsLess than 0.05%the population.

The heart lock is usually the result of a trauma that influences the electrical system of the heart.His risk of a heart lock also increases in old age.Other risk factors are a history of:

  • Heart attack
  • Heart structure problems, like hypertrophic myocardiopathy
  • Heart valve disease
  • High potassium mirror

Several diseases can also increase the risk of a heart lock, including:

  • Acute rheumatic fever
  • Heart tumors
  • Hyperthyroidism
  • Lymes Disease
  • Lymphomaand other neoplasms

A2019 studyIt also suggests that two important cardiovascular risk factors (high blood pressure and high blood sugar levels) are associated with a higher risk of developing the sacrifice.

Operation on the open heartIt can also increase the risk of heart blocking or other heart rate disorders (Arrishthmia).

In addition, heart can be a side effect of some types of medicinal products.The medication associated with heart castles include:

(Video) Atrioventricular Block (AV block) - Types of Heart Block Part 2, Animation.

  • Beta blocker
  • Calcium channel blocker
  • Digoxin
  • Fingolimod(For multiple sclerosis)

Although it is rare, the heart's block can also be an innate disease that has an estimated effects1 out of 15,000 to 22,000 living birthsIn the most innate cases of a passion, the mother had an autoimmune disease, such as:LupusÖChogren -syndrome.

The type and severity of the symptoms depend on the type of heart lock.

Symptoms of the first degree

The first heart lock often has the first degree lock.Annormal heart rate and rhythm can be determined during a routineAn electrocardiogram (ECG).

Second class symptoms

If the symptoms are present in the heart block of second degree, they generally include fatigue and breathtaking, which sometimes leads to fainting (faintingSyncope).Anyos possible symptoms of a second degree locking card:

  • Chest pain
  • Palpitations(The feeling as if the heart skipped a rhythm)
  • Trimming
  • flat or fast breathing

Third grade symptoms

Symptoms due to the sacrificial blockage of the third grade are usually more serious and are considered a medical emergency.The most common symptoms are:

  • Chest pain
  • dizziness
  • Difficulty breathing
  • Fainting
  • Very slow or not pulsy powder

How serious is a heart block?

(Video) Heart Blocks Made Easy - 1st, 2nd (Mobitz 1/Wenckebach & Mobitz 2), 3rd (Complete) | with ECGs

The heart block is not always serious, but it depends on the type.The first heart lock and even in the second degree (type I) can be treated with little or not at all.This type of heart lock can have little effect on your health or quality of long -term life.

Second -degree heart block (type II) and third class generally needs APacemakerWith certain lifestyle changes, you may be able to live comfortably for a long time.In rare cases, patients with frequent episodes of fainting (syncope) may also require a pacemaker due to a heart block.

One of the most serious risks to heart castle is heart failure.2018 studyIt indicates that if there is complete heart blocking, there is a significantly higher risk of heart failure.The heart block of third grade can also damage and damage the internal organsHeart attack(ohne Beats).

A complete assessment of your heart health must include a physical examination in which your doctor hears your heart with a stethoscope.You also have to check your personal and family medical history, medication and nutritional supplements and your symptoms.

The first heart lock and some cases of second degree deterioration cases are often demonstrated by physical examination of routine and EKG.An EKG is an non -invasive test in which electrodes are used for measuring rhythm, speed and speed and resistance of its heart as well as the pattern of the electrical activity of his heart.

For intermittent electrical anomalies, you can recommend using a portable EKG monitor like AMonitor Holterfor 24 hours or longer.

In rare cases, your doctor can also request AElectrophysiology Study, which implies that a catheter is placed in a blood vessel.The catheter is led to the heart to monitor the electrical activity of the heart.

In most cases for the first levels, no treatments are required.With some types of second degrees heart blockPacemakerIt is usually necessary.

A pacemaker is a small device with surgically implanted battery in the chest.

AHeart pacemaker studyThe treatment of the heart lock suggests that both the stimulation of the double camera (which implies that signals are sent to the upper and lower heart cameras) as well as the synchronous ventricular stimulation (which only stimulates the lower camera) effective long -term solutions for the heart lock other seriousDiseases can affect long -term effectiveness.

(Video) Heart Blocks, Anatomy and ECG Reading, Animation.

Creator cannot always be prevented.

  • EatHealthy heart diet, like thatMediterranean SeaDiet
  • A practiceRegularly with the target of at least 150 minutes a week of aerobic activity with moderate intensity
  • smoking prohibited
  • Weight management
  • Treat stress in a healthy way, including a dream of 7 to 9 hours per night
  • Receive regular review -ups with your doctor

The final result

(Video) How to Interpret AV Heart Blocks Ekg Heart Rhythms | 1st degree, 2nd degree, 3rd degree difference

The heart lock is the interruption of the current flow from the upper chambers of its heart to the lower cameras (ventricle).If it is a lower interruption, it is possible that you do not need treatment.However, if the heart's block is more serious, you may need a pacemaker to maintain a healthy heart function.

Although the heart block cannot always be prevented (age and heart disease are the most common risk factors, a healthy lifestyle that reduces the risk of heart attack and cardiovascular diseases can help reduce the likelihood of developing this disease.


1. What is complete heart block?
(British Heart Foundation)
2. Heart Blocks Explained - First, Second, Third Degree and Bundle Branch on ECG
(MedCram - Medical Lectures Explained CLEARLY)
3. Atrial fibrillation (A-fib, AF) - causes, symptoms, treatment & pathology
(Osmosis from Elsevier)
4. AV Heart Blocks EKG Interpretation Made Easy (1st, 2nd, 3rd-Degree Comprehensive Review)
5. Arrhythmias | Types, Pathophysiology, Diagnosis, Treatment
(Ninja Nerd)
6. Atrioventricular AV block first, second, third complete degree, symptoms
(Tài Nguyễn Nhật)
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