Common "Bundle Branch Block" queries answered by top doctors | iCliniq

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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All the answers published in this website are written by verified medical doctors, therapists and health experts. The Content has been moderated by iCliniq medical review team before publication. Post your medical clarifications on iCliniq by choosing the right specialty and get them answered. Your medical queries will be answered 24/7 by top doctors from iCliniq.

Is jerky septum a normal finding seen on the echocardiogram?

Query: Hello doctor, I am 50 years old. My echo is normal with LVEF of 50% and dobutamine stress test negative for ischemia (LVEF of 58%). But, it shows a jerky septum? Is jerky septum a normal finding?  Read Full »


Dr. Sapkal Ganeshrao Patilba

Answer: Hello, Welcome to icliniq.com. There are a few causes of jerky septum like bundle branch block, increased pressure in the right side of the heart, and disease in the pericardium. As your echo is normal, because of increased pressure on the right side of the heart, disease in pericardium is les...  Read Full »

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

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


Dr. Muhammad Zohaib Siddiq

Answer: Hi,Welcome to icliniq.com.The heart needs a current to beat. Current is generated in the sino-atrial node. It is like an electric generator. It travels via bundle branches, which are like wires. Current goes from SA (sinus node) node to AV (atrioventricular node) node via atrial bundles. Then from A...  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 a bifascicular block. I am trying to learn EKG reading and was wondering if you can help me.  Read Full »


Dr. Muhammad Zohaib Siddiq

Answer: Hi, Welcome to icliniq.com. Look for the right bundle branch block and axis deviation. If the left anterior or posterior hemiblock is also present, this makes it bifascicular block. If AV block (atrioventricular block) also, this makes trifascicular block. If the left anterior and posterior blocks...  Read Full »

My son's ECG shows left ventricular hypertrophy. What to do?

Query: Hi doctor, My son is 12 years old, very active, plays representative basketball and attends a sports high school. Last Sunday, he was knocked over while playing and hurt his arm. After getting up, he fainted. He was fine after that. There were no broken bones, but the medical center did an ECG, and ...  Read Full »


Dr. Sagar Ramesh Makode

Answer: Hello, Welcome to icliniq.com. The ECG (electrocardiogram) is showing incomplete RBBB (right bundle branch block) or early RBBB and features of left ventricular hypertrophy, and also heart rate is on lower side nearing 60 beats per minute. But as you mentioned, he is a basketball player. So, athle...  Read Full »

Will I need pacemakers for blocks based on my EKG report?

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

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 »

I suffer from cardiac problems. Please help

Query: Hello doctor, I am a 24 year old female who has celiac disease and was recently diagnosed with cardiomyopathy, a left bundle branch block (starts I believe when my pulse gets above 80). I had atrial flutter and had an electrophysiology study, where they ablated some arrhythmias, and during the proce...  Read Full »


Dr. Mahmoud Ahmed Abdelrahman Abouibrahim

Answer: Hello, Welcome to icliniq.com. I understand all your concerns. From what you mentioned, the medications that you take for the heart failure like the diuretics may be responsible for the great majority of your symptoms like the dry eyes, the ear problem, sore joints. So, I suggest that you tell me ...  Read Full »

I have incomplete RBBB, palpitations, and SVEs. Brugada syndrome?

Query: Hello doctor, I am a 28-year-old female. I have the following findings in EKG. Right axis deviation, right ventricular hypertrophy with repolarization abnormality, incomplete RBBB and Symptoms: Palpitations. The following are the findings on the Holter monitor: The patient had a min HR of 47 bpm, a ...  Read Full »


Dr. Isaac Gana

Answer: Hello, Welcome to icliniq.com. Thank you for your query. I will look at your investigations in detail and get back to you in some minutes with a follow-up reply. Thank you.  Read Full »

Can malaria affect the heart health of a 71-year-old male?

Query: Hi doctor, My father is 71 years old and recently got malaria (vivax), due to which his platelet counts dipped to 44000 mcL. In addition to blood tests, the doctor did an ECG as a routine procedure and found RBBB. The doctors said RBBB was not there in his ECG 10 years ago. During malarial shivers,...  Read Full »


Dr. Mandurke Vivek Maroti

Answer: Hi, Welcome to icliniq.com Thank you for consulting with us on icliniq.com. The right and left bundles are conducting structures of an electrical signal. But with aging and due to other reasons, it does not transmit an electrical signal. So it leads to the right bundle branch block, so the right s...  Read Full »

Do I need to consult a cardiologist in-person to evaluate my right bundle branch block?

Query: Hello doctor, I am a 45-year-old male. My BMI is 29. I have been diagnosed with an incomplete right bundle branch block QRS duration of 97 milliseconds. I do not have high blood pressure, and I exercise daily. My doctor said no further action was needed. Do I need a cardiologist appointment for furt...  Read Full »


Dr. Muhammad Zohaib Siddiq

Answer: Hello, Welcome to icliniq.com. Is there any family history of a cardiac issue or sudden cardiac death? Did you ever have syncope? Kindly attach your ECG (electrocardiogram) report to help you better. Regards.  Read Full »

What does abnormal repolarization in an ECG report mean?

Query: Hi doctor, I am an 80-year-old female with some history of slight hypertension but without any other significant health issues. I am not on any medication at all. I usually measure my blood pressure and pulse once or twice a day to monitor it. Historically, my blood pressure has been in a band of 12...  Read Full »


Dr. Muhammad Zohaib Siddiq

Answer: Hello, Welcome to icliniq.com. Thanks for the query. Your 12 lead ECG (electrocardiography) shows the right bundle branch block and normal heart rate. The rhythm strip shows intermittent 2nd degree AV block. If you are not taking any rate slowing medicine, then this block can be due to an age-relate...  Read Full »

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