Your Notifications
All done, no notifications

What is an Atrioventricular Block?

Atrioventricular Block occurs when electrical signals travelling from the atria to the ventricles are delayed or interrupted. It is classified as first-, second-, or third-degree (complete) AV block, depending on how much conduction is impaired. Mild forms may cause no symptoms, while higher-grade blocks can significantly slow the heart rate and may require urgent treatment or permanent pacing.

What is the Importance of Timely Treatment?

Timely evaluation is important because higher-grade AV block can significantly reduce the heart's ability to maintain an adequate rate and cardiac output. Early diagnosis helps identify reversible causes, monitor progression, and determine whether the patient needs temporary or permanent pacing. Prompt treatment of severe or symptomatic block can help reduce the risk of fainting, injury, heart failure, and other complications.

What are the Common Symptoms of an Atrioventricular Block?

  • Slow Heartbeat: A significant reduction in heart rate may occur when electrical signals are delayed or blocked.
  • Dizziness or Lightheadedness: Reduced cardiac output can temporarily decrease blood flow to the brain.
  • Fainting: Higher-grade AV block may cause sudden loss of consciousness because the heart rate drops too low.
  • Fatigue: A slow or irregular heartbeat may reduce the amount of blood delivered to the body's tissues during activity.
  • Shortness of Breath: Reduced cardiac output may cause breathlessness, particularly during physical exertion.
  • Chest Discomfort or Palpitations: Some individuals may experience chest discomfort or notice an irregular or unusually slow heartbeat, especially when another heart condition is present.

Causes and Risk Factors of Atrioventricular Block

Causes

  • Age-Related Conduction System Degeneration: Fibrosis or degeneration of the heart's electrical system can interfere with signal transmission.
  • Coronary Artery Disease or Heart Attack: Reduced blood supply or damage to cardiac tissue can affect AV conduction.
  • Heart Surgery or Procedures: Cardiac surgery or catheter-based procedures may occasionally affect the conduction system.
  • Medications: Certain beta-blockers, calcium-channel blockers, digoxin, and antiarrhythmic medicines can slow AV conduction.
  • Inflammatory or Infiltrative Conditions: Conditions such as myocarditis, sarcoidosis, or amyloidosis may affect the cardiac conduction system.
  • Congenital Heart Block: Some individuals are born with abnormalities affecting electrical conduction.

Risk Factors

  • Older Age: Degenerative changes in the cardiac conduction system become more common with age.
  • Underlying Heart Disease: Coronary artery disease, cardiomyopathy, and other structural heart conditions may increase risk.
  • Previous Heart Attack: Damage to cardiac tissue can interfere with electrical signal transmission.
  • Previous Cardiac Procedures: Some cardiac surgeries or interventions may affect the conduction pathways.
  • Certain Medications: Drugs that slow AV conduction may increase the likelihood of clinically significant block.
  • Inflammatory or Infiltrative Diseases: Certain systemic conditions can affect the heart's electrical system.

Latest Research and Technologies in the Treatment of Atrioventricular Block in Thailand

  • Recent advances in atrioventricular block management include improvements in permanent pacemaker technology and conduction-system pacing. Techniques such as His-bundle pacing and left bundle branch area pacing aim to activate the ventricles through the heart's conduction system and may help preserve more physiological electrical activation in selected patients. Research is evaluating their long-term outcomes compared with conventional right-ventricular pacing, particularly in patients expected to require frequent ventricular pacing. Leadless pacemakers are another option for selected patients.

Treatment options for Atrioventricular Block

Temporary Pacing: Temporary pacing may be required in patients with severe or unstable bradycardia while the underlying cause is treated or a permanent pacemaker is arranged.

Permanent Pacemaker : A permanent pacemaker is the primary treatment for many patients with symptomatic or high-grade AV block and is particularly important in complete heart block.

Cost Start From 8500Explore Options

Dual-Chamber Pacemaker : A dual-chamber pacemaker can coordinate atrial and ventricular activity and is commonly used in selected patients with AV conduction disorders.

His-Bundle or Conduction-System Pacing: These pacing techniques aim to stimulate the heart's natural conduction pathways and may be considered for selected patients requiring long-term pacing.

Leadless Pacemaker: A small self-contained pacemaker implanted inside the heart may be an option for selected patients who meet specific clinical and anatomical criteria.

  • Clinical assessment:
    • Medical History: Assessment of symptoms, onset, triggers, previous heart disease, procedures, and relevant medical conditions.
    • Physical Examination: Evaluation of pulse, blood pressure, heart sounds, circulation, and signs of heart failure.
    • Electrocardiogram (ECG): The main diagnostic test used to identify first-, second-, or third-degree AV block and assess the heart rhythm.
    • Holter Monitoring: Continuous ECG recording can detect intermittent AV block that may not appear during a standard ECG.
    • Event or Patch Monitoring: Longer-duration monitoring may help identify infrequent episodes of conduction abnormalities.
    • Exercise Testing: May help evaluate changes in AV conduction and heart rate during physical activity in selected patients.
    • Electrophysiological Study: An invasive test that evaluates the location and severity of conduction abnormalities and may be used in selected complex cases.
  • Imaging Tests:
    • Echocardiography: Evaluates heart structure and function and can identify associated structural heart disease.
    • Chest X-ray: May show heart size and associated lung or cardiac findings when clinically indicated.
    • Cardiac MRI: May help identify myocardial inflammation, scarring, infiltrative disease, or other structural abnormalities in selected patients.
    • Cardiac CT: Provides detailed anatomical information when additional structural assessment is required.

MediRehab (a chain of Rehab centres, part of MediGence) provides comprehensive tele-rehabilitation services to support patients with atrioventricular block in Thailand. These services include:

  • Rehabilitation gradually returns patients to safe physical activity based on their heart rhythm, cardiac function, underlying disease, and treatment.
  • Cardiac rehabilitation may also be considered when AV block occurs alongside other cardiovascular disease.
  • Medicines do not usually correct persistent structural damage to the cardiac conduction system. Treatment focuses on addressing reversible causes and adjusting medicines that worsen AV block. In severe or persistent symptomatic AV block, temporary or permanent pacing may be required rather than long-term medication.

Instantly Connect with our Specialists

Doctor 1
Doctor 2
Doctor 3
Doctor 4
Doctor 5
Doctor 6
Doctor 7
Doctor 8

Hospitals for Atrioventricular Block in Thailand

Vejthani Hospital: Top Doctors, and Reviews
Vejthani Hospital

Bangkok, Thailand

Vejthani Hospital located in Bangkok, Thailand is accredited by NABH, NABL. Also listed below are some of the most prominent infrastructural details:

  • It is among the topmost private hospitals functioning in Thailand.
  • The bed capacity of the hospital is 263.
  • There are more than three hundred thousand patients visiting the hospital every year.
  • Vejthani hospital has more than 40 outpatient clinics and centers.
  • International patient care center with all kinds of services: air ambulance, transfers, travel, stay, embassy liaison, patient coordinators, prayer rooms, visa coordination and translators for 20 languages.
  • The special facilities are:
  • International Certified Laboratory
  • 10 Operating Rooms
  • Radiology Section: Portable X-ray, CT-scan and C-ARM and MRI
  • Neonatal Critical Care Unit
  • Water-jet technique applied for liposuction
  • Computer navigation and mini-invasive technique for Joint Replacement surgery
Message Us

229

PROCEDURE

51

DOCTORS IN 13 SPECIALITIES

15+

FACILITIES & AMENITIES

Bangpakok 9 International Hospital: Top Doctors, and Reviews
Bangpakok 9 International Hospital

Bangkok, Thailand

Bangpakok 9 International Hospital located in Bangkok, Thailand is accredited by JCI. Also listed below are some of the most prominent infrastructural details:

  • It would be prudent to summarise the Medical Services provided at the Bangpakok 9 International Hospital (BPK 9), Bangkok, Thailand:
  • Cosmetic Dentistry
  • Dental Implants
  • Electrocardiogram (EKG or ECG)
  • Exercise Stress Test
  • Health Screening
  • Laser Vagina Firming
  • Pediatric Physical Therapy
  • Perfect Slim by Vela II
  • Physical Therapy for Musculoskeletal
  • Prosthodontics
  • The Medical Services are also inclusive of the International Patient Services such as the ones listed here:
  • Thai, English, French, Arabic, Chinese, Myanmar, Cambodia, Bangladeshi, Bahasa and Tagalog are the languages in which there are Translation services available for International Patients.
  • Visa extension related assistance
  • International health insurance related assistance
  • Embassy and international organizations related assistance
  • A variety of meals of choice for International Patients
  • Email consultation services
  • Transfer to either airport and/or hotels
  • Prayer room
  • Four different types of rooms are available such as Deluxe room, two kinds of suites, and a VIP suite.
  • Hospital facilities like The Coffee shop, Food Hall, Cafe and Medical Spa.
  • Complete health and safety protocols are maintained in the various Medical Centers some of whom are as follows:
  • Aesthetic Center
  • 24 Hour Emergency Center
  • Allergy Center
  • Breast Center
  • bSmart Center
  • Checkup Center
  • Dental Center,
  • Happy Long Life Center
  • Medical Fitness Center
  • Psychiatric Center
  • Rehabilitation Center
  • Sleep Disorders Center
Message Us

287

PROCEDURE

55

DOCTORS IN 13 SPECIALITIES

21+

FACILITIES & AMENITIES

Our Services to better your experience

Opinion & Option

We submit the most accurate opinion and options from one or more countries for your review

Consult Privately

Consult with a certified specialist privately on our telemedicine platform even before you decide to travel

Logistics

We handle flights, visas, transfers, and accommodation—so you can focus on your health.

Recovery

Our In-house rehabilitation service packages to better your recovery and treatment outcome

Why Choose Thailand for Atrioventricular Block Treatment?

  • Experienced Cardiologists and Electrophysiologists: Patients can access specialists experienced in diagnosing and managing heart rhythm and conduction disorders.
  • Advanced Rhythm Monitoring: Major cardiac centres may provide ECG, Holter monitoring, extended ambulatory monitoring, exercise testing, and electrophysiological studies.
  • Modern Pacemaker Technology: Eligible patients may have access to dual-chamber, leadless, and conduction-system pacing technologies.
  • Specialised Electrophysiology Care: Dedicated rhythm teams can evaluate complex AV block and determine appropriate pacing strategies.
  • Multidisciplinary Care: Cardiology, electrophysiology, cardiac imaging, cardiac surgery, intensive care, and rehabilitation teams can contribute to complex cases.
  • Personalised Treatment: Treatment is selected according to the type and severity of AV block, symptoms, underlying heart disease, age, and overall health.
  • International Patient Support: Many major Thai hospitals provide international patient services, including appointment coordination, treatment planning, accommodation assistance, and follow-up support.

Frequently Asked Questions

Recovery depends on the type and cause of AV block and the treatment required. Reversible causes may improve after treatment, while recovery after pacemaker implantation generally involves several weeks of gradual return to normal activities. Long-term cardiac follow-up may be required.

Some people with mild or appropriately treated AV block can walk and remain physically active. However, higher-grade block may cause dizziness, fainting, or reduced exercise tolerance. A cardiologist should guide physical activity according to the individual's condition.

Many advanced Thai cardiac centres offer ECG, prolonged rhythm monitoring, electrophysiological evaluation, modern pacemakers, remote device monitoring, and selected leadless or conduction-system pacing technologies.

Many major Thai hospitals have international patient departments that help overseas patients with appointments, medical documentation, treatment coordination, accommodation, interpretation (where available), and follow-up arrangements.

Consider the cardiologist's or electrophysiologist's experience with conduction disorders, access to advanced rhythm monitoring, pacemaker implantation expertise, availability of modern pacing technologies, emergency cardiac services, and long-term device follow-up.

The success rate of Atrioventricular Block treatment is 95-99%; outcomes depend on the type and cause of AV block, associated heart disease, treatment used, and overall health. Pacemaker therapy can effectively maintain an adequate heart rate in appropriately selected patients with significant conduction block.

Thailand has cardiologists and cardiac electrophysiologists experienced in managing AV block, bradycardia, conduction disorders, and pacemaker therapy. Experience varies between centres, so patients should select a team with appropriate expertise in cardiac rhythm management.

Risks depend on the underlying condition and treatment. Pacemaker implantation may involve bleeding, infection, blood-vessel injury, lead-related complications, or rhythm disturbances. Temporary pacing also carries procedure-related risks. The treating cardiac team should explain individual risks.

Atrioventricular block is a heart rhythm disorder, not an injury. If a person with known or suspected AV block develops fainting, severe dizziness, chest pain, severe breathlessness, confusion, or a very slow heartbeat, emergency medical evaluation is required.

Atrioventricular block does not normally cause physical or skeletal deformities. However, severe or prolonged conduction abnormalities may affect circulation and physical capacity. Complications may also occur if high-grade AV block remains untreated.

Yes. Symptoms such as fatigue, dizziness, fainting, breathlessness, and reduced exercise tolerance can interfere with work, physical activity, and everyday life. Appropriate treatment and regular cardiac monitoring can help improve functional well-being.

The consequences depend on the block's severity. High-grade or complete AV block can cause severe bradycardia, fainting, heart failure, reduced cardiac output, or potentially life-threatening complications. Appropriate patients may require urgent or permanent pacing.

Not all AV block can be prevented, particularly when it results from age-related conduction-system disease or congenital abnormalities. Managing cardiovascular risk factors, treating underlying conditions, reviewing medicines that affect conduction, and seeking timely evaluation of rhythm symptoms may help reduce complications.

Yes. AV block is more common in older adults and people with underlying heart disease, previous heart attacks, or previous cardiac procedures. Certain medications and inflammatory or infiltrative diseases can also increase the risk. Congenital AV block can occur in newborns and younger individuals.

Author

Dr. Shagufta Parveen
Dr. Shagufta Parveen

Doctor of Pharmacy

3 Years of Experience

Dr. Shagufta Parveen is a Clinical researcher and medical writer with expertise in clinical pharmacology and pharmacotherapeutics. She holds a B.Pharm and Doctor of Pharmacy (Post-Baccalaureate) degree from Teerthanker Mahaveer University, Moradabad.

During her clinical stint at BLK-Max Super Speciality Hospital and Indraprastha Apollo Hospital, she gained hands-on experience in the Clinical Pharmacology Department. Combining scientific knowledge with strong medical writing skills, Dr. Shagufta develops evidence-based healthcare content, treatment guides, and patient education resources.

Her work focuses on simplifying complex medical concepts while maintaining scientific accuracy, helping readers better understand healthcare advancements and treatment options.

In addition to her writing expertise, she is actively involved in scientific research and has contributed to peer-reviewed publications.

Her research work is accessible through the following links:

https://scholar.google.com/citations?user=lMVK1eIAAAAJ&hl=en

https://carcinogenesis.com/index.php/JOC/article/view/870

https://carcinogenesis.com/index.php/JOC/article/view/868

https://wjpsronline.com/abstract/0000000760

View More

Reviewer

Dr. Nityanand Tripathi
Dr. Nityanand Tripathi

Interventional Cardiologist

29 Years of Experience

With a rich experience of more than 29 years, Dr. Nityanand has gained a vast spectrum of skills and expertise in performing all types of complex cardiac procedures. He is an expert in clinical & interventional cardiology and electrophysiology. He studied his medicine (MBBS) and MD from the Institute of Medical Sciences of Banaras Hindu University, Varanasi, and later completed his DM in Cardiology from the prestigious King George Medical University, Lucknow. View More

Last Reviewed - January 2026