Bundle Branch Block

Bundle branch block causes delay or block in the electrical pathway, through which impulses travel and make the heart beat. It can be caused due to heart attacks, cardiomyopathy, myocarditis, and hypertension. Mostly it does not cause any symptom, and sometimes it results in fainting.

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My doctor suggested 2D echo and TMT after reviewing my son's ECG. Is there any problem?

Query: Hello doctor, My 18-year-old son got an ECG and blood tests last month as a requirement for medical screening. He jogs every night for 30 minutes. He looks healthy. We consulted our cardiologist early this month and he requested for 2D Echo and treadmill stress test. Unfortunately, we were schedul...  Read Full »


Dr. Vivek Pillai

Cardiologist

Answer: Hi, Welcome to icliniq.com. Could you upload his ECG (electrocardiogram) if it has been taken and also his echo and treadmill results?  Read Full »

What is the relevant test for left bundle branch block?

Query: Hello doctor, I was diagnosed with a left branch bundle block a few years back. I have been under the care of a cardiologist to make sure my heart is fine since then. I have done stress echos yearly or every two years since and have been told my heart is otherwise fine. I just had to switch the oth...  Read Full »


Dr. Sagar Ramesh Makode

Cardiologist, General Medicine Physician, Internal Medicine Physician, Family Physician, General Practitioner

Answer: Hello, Welcome to icliniq.com Treadmill test is not very informative in case of lbbb patient, however, stress echo either exercise or nuclear is valid. Stress thallium is the best test to be done in you. I guess you did not have any symptoms like chest pain or heaviness during stress test and if s...  Read Full »

What does right bundle branch block mean?

Query: Hello doctor, I would like to send you my daughter's ECG for evaluation. This was taken at the ER. I think she had heartburn. We are now concerned about the abnormal report.  Read Full »


Dr. Rishu

Cardiologist

Answer: Hi, Welcome to icliniq.com. I have seen the ECG of your daughter. (attachment removed to protect patient identity). She has a condition called right bundle branch block. A right bundle branch block (RBBB) is a heart block in the electrical conduction system. Our heart is divided into four chambe...  Read Full »

Why is there repeated episodes of dizziness and chest pain in partial right bundle block?

Query: Hello doctor, My husband went to the hospital before four days because he felt dizziness and chest pain. They found no troponin and told us his EKG was fine. His bp was 105/70 mmHg in the hospital. The next day we went to a cardiologist and found partial right bundle block and he ordered more test...  Read Full »


Dr. Isaac Gana

Cardiologist

Answer: Hello, Welcome to icliniq.com. Thanks for your detailed explanation. I understand your worries, but there is nothing much to worry about. It is common to have an event of fainting and dizziness, I see often amongst my patients with RBBB (right bundle branch block). RBBB is due to a slow heart rat...  Read Full »

Is there any specific thing to look for on an EKG to show bifascicular block?

Query: Hello doctor, I am wondering if there is any specific thing to look for on an EKG to show bifascicular block? I am trying to learn EKG reading and was wondering if you can help me.  Read Full »


Dr. Muhammad Zohaib Siddiq

Cardiologist, General Practitioner

Answer: Hi, Welcome to icliniq.com. Look for right bundle branch block and axis deviation. If left anterior or posterior hemi-block is also present, this makes it bifascicular block. If AV block also, this makes trifascicular block. If left anterior and posterior blocks combine, it is called left bundle b...  Read Full »

How serious is bifascicular block in young people?

Query: Hello doctor, I am wondering how serious is bifascicular block? Is it common among younger people? I am only 30 years old and this came up on EKG. I was very surprised as I live a pretty healthy life. Any ideas what caused this and what steps I should take next?  Read Full »


Dr. Muhammad Zohaib Siddiq

Cardiologist, General Practitioner

Answer: Hi, Welcome to icliniq.com. I can understand your worries. It is not common in general population. It occurs mostly in those who have heart attack, angina, have high blood pressure or some valvular disease, especially aortic valve. Other cause is fibrotic degeneration of conduction channels, but ...  Read Full »

Can you please tell me the difference between left and right bundle branch block?

Query: Hello doctor, Can you please tell me the difference between left and right bundle branch block? And why is left considered far more dangerous?  Read Full »


Dr. Muhammad Zohaib Siddiq

Cardiologist, General Practitioner

Answer: Hi, Welcome to icliniq.com. Heart needs current to beat. Current is generated in sino-atrial node. It is like electric generator. It travels via bundle branches, which are like wires. Current goes from SA node to AV node via atrial bundles. Then from AV node to a small bundle called HIS bundle. Th...  Read Full »

Does my EKG show any block?

Query: Hi doctor,I am a 37-year-old female, 140 lbs 5’5". I saw a new cardiologist yesterday and my EKG results. Results said left axis deviation, LAPB, RBBB. I asked her if I have a bundle branch block and she said no because only the two heartbeats show it and the rest of the EKG was normal. I am worri...  Read Full »


Dr. Lohit Chauhan

Family Physician, General Medicine Physician, Internal Medicine Physician

Answer: Hello, Welcome to icliniq.com. I guess you mean LAFB and not LAPB. According to you, you already have RBBB and this time the EKG strip read LAFB. Many times the EKG strips read the EKG strip wrongly. You should believe in your cardiologist as humans are needed to interpret the EKG with some specific...  Read Full »

How to clear the mild blockage present in my heart?

Query: Hi doctor, Recently, I did an ECG. The doctor examined me and told me that I have a mild blockage. Please suggest.  Read Full »


Dr. Sagar Ramesh Makode

Cardiologist, General Medicine Physician, Internal Medicine Physician, Family Physician, General Practitioner

Answer: Hi, Welcome to icliniq.com. I have gone through the attachment (attachment removed to protect patient identity). There is sinus bradycardia with a heart rate of 55 to 60 beats per minute, with a right bundle branch block along with left axis deviation. There are no significant ST-T abnormalities s...  Read Full »

Is it safe to go under anesthesia if I have bifascicular bundle block?

Query: Hello doctor, I am 60 years male. I have a BMI of 33. I have bifascicular bundle block. I take Salbutamol and Fluticasone (Relvar) puffers for asthma, which is lifelong. I have seen my GP and my cardiologist and been cleared for bariatric (gastric band) surgery next week, in order to expedite some ...  Read Full »


Dr. Kiran Kumar Kolla Gopalkrishna

Anesthesiologist

Answer: Hello, Welcome back to icliniq.com. Bifasicular block is commonly RBBB (right bundle branch block) with left or right axis deviation. I need to explain to you that patients with this block are safe to undergo anesthesia. I would have been happy if an ECG was attached. If LBBB (left bundle branch b...  Read Full »

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