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Doctor insights on: What Does It Mean To Have An Incomplete Right Bundle Branch Block

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What does it mean to have an incomplete right bundle branch block?

What does it mean to have an incomplete right bundle branch block?

Not much: It is a benign EKG finding related to a slight delay in the conduction system (like electrical wiring) of the heart. It is more common in those with an atrial septal defect (hole between left and right heart) but in general is benign, nothing to worry about. ...Read more

Dr. Sanjiv Kaul
98 Doctors shared insights

Bundle Branch Block (Definition)

There are 2 main branches of the heart's electrical system within the ventricles, the right bundle branch and the left bundle branch. Additionally, the left bundle branch has two sub-branches, the antero-superior fascicle and the posteroinferior fascicle. When one or more branches are disrupted, the resultant electrical abnormalities can be ...Read more


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Hoping you can tell me, is right bundle branch block (rbbb) something to really stress over everyday?

Hoping you can tell me, is right bundle branch block (rbbb) something to really stress over everyday?

Not really: Rt bbb is a common ekg finding and it may occur in some medical conditions. But it is also common in some people with normal heart
it occurs in conditionsthat effect the right ventricle or the lungs. If you are otherwise healthy and no other symptoms and your doctor gave you clean chit, than you do not need to stress over it every day. ...Read more

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Would it be possible that a rbbb (right bundle branch block) cause a heart murmur?

Would it be possible that a rbbb (right bundle branch block) cause a heart murmur?

No: A rbbb is a pattern seen in the ECG where the electrical impulse is delay or interrupted as it spread along the heart. Prevalence increase with age. At 80 y/o close to 10% people can have it. Somewhat benign but an evaluation need to be done to r/o heart and lung conditions. Conditions like copd, cad, myocarditis, valvular heart disease, and other structural heart conditions. ...Read more

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Right bundle branch block and Z-pack (Azithromycin) prescribed for infection. Haven't taken yet, any concern for heart issues with RBBB and Azithro?

Right bundle branch block and Z-pack (Azithromycin) prescribed for infection. Haven't taken yet, any concern for heart issues with RBBB and Azithro?

BBB: ECG QT interval prolongation can be a concern with azithromycin, the bundle block adds to the measured QT interval, however the more relevant measure is the JT interval that ECG machines don't record/measure, consult locally with the prescribing physician. Also don't delay antibiosis with out the prescriber being aware. ...Read more

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What does "incomplete right bundle branch block" mean in lay men's terms?

What does "incomplete right bundle branch block" mean in lay men's terms?

Subtle conduction: Abnormality in heart's electrical system. Frequently a benign variant. ...Read more

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Ecg results: what does incomplete right bundle branch block mean?

Ecg results: what does incomplete right bundle branch block mean?

Irbbb: It means conduction slowing in the right bundle branch of the conduction system. ...Read more

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My 17 year old cousins EKG showed leftward axis and incomplete right bundle branch block. It's abnormal for her age but what does it mean?

My 17 year old cousins EKG showed leftward axis and incomplete right bundle branch block. It's abnormal for her age but what does it mean?

Ecg: Those findings are not usual for the age but don't necessarily imply any specific pathology present. They need to put together with the rest of her clinical situation to assess whether any explanation suggests itself. ...Read more

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So now my 17 year old cousin has a grade 2 heart murmur, leftward axis, and incomplete right bundle branch block. What can all this mean? I'm scared!

So now my 17 year old cousin has a grade 2 heart murmur, leftward axis, and incomplete right bundle branch block. What can all this mean? I'm scared!

My best guess: Heart murmur, left axis deviation of the frontal plane qrs axis, and an rsr' in v1 (irbb) makes pediatric cardiologists suspicious of an osmium primum atrial septal defect. Typically, this presents in the first few months or years of life, but it can present in adulthood. To sort this out, your cousin needs an echocardiogram. ...Read more

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I have an incomplete right bundle branch block is it dangerous nd can cause a cardiac arrest?

I have an incomplete right bundle branch block is it dangerous nd can cause a cardiac arrest?

Irbbb usually safe: Irbbb is usually an ECG anomaly that may speak of some right sided enlargement or strain (can occur in atrial septal defect or in pulmonary processes with right heart strain). It can also occur innocuously and unrelated to cardiac structural changes. It does not typically imply impending conduction system collapse and is not a predictor for cardiac arrest or sudden cardiac death. ...Read more

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What is an incomplete right bundle branch block?

Slowing: It means there is a mild slowing of the electrical conduction in a certain part of your heart. In most cases it is an incidental finding and not worrisome. ...Read more

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What is an incomplete right bundle branch block in the heart?

What is an incomplete right bundle branch block in the heart?

Electrical slowing: The conduction of electricity in the lower chambers of the heart occurs through the left and right bundles. An incomplete right bundle branch block is an insignificant finding, representing a slight slowing in the electrical conduction as it passes through the right side of the heart. Please be aware that this has nothing to do with blockages in the arteries or heart attacks. ...Read more

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Can you explain incomplete right bundle branch block?

Can you explain incomplete right bundle branch block?

Mild condabrupt prob: The righty and left ventricles are induced to beat through electrochemical currents transmitted through the right and left bundle branches, respectively. Irbbb means part of the right bundle is not transmitting fully. It is a benign condition of no significant clinical consequence. ...Read more

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What does incomplete right bundle branch block indicate?

May be nothing: Incomplete right bundle branch block indicates a slight delay in the electrical conduction in the right bundle. It is often found on a routine ECG and almost always has no clinical consequences. ...Read more

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What is the difference between complete right bundle branch block and incomplete right bundle branch block?

What is the difference between complete right bundle branch block and incomplete right bundle branch block?

Duration: A complete right bundle branch block has a qrs duration of 120 milliseconds or more, an incomplete rbbb is less than 120 milliseconds. ...Read more

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What are treatments for incomplete right bundle branch block?

Placebo, 10 mg: Incomplete rbbb is, in the majority of patients, normal variant caused by simple delay of the right bundle conduction relative to the left bundle's conduction. It is benign (safe), and no specific treatment is recommended or required. Certain other conditions can cause a right bundle branch block, but the treatment is generally focused on those conditions, and not the bundle block. ...Read more

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What are sinus rhythms with incomplete right bundle branch block?

Abnormal ECG: Hello again jmercado --
you have an abnormal ECG -- but this could be an isolated ECG abnormality or it could mean more if you are not feeling well - and you should talk to your doctor about this -. ...Read more

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What is the treatment for incomplete right bundle branch block? Is this serious? Age 24...

No treatment: This is a minor conduction delay in your heart, and is very common. Often this is considered a variation of normal, and is usually not associated with other cardiac pathology. ...Read more

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What do you suggest if my EKG say incomplete right bundle branch block borderline!?

Often nl variant: This can be a normal variant. It is usually not further worked up. Have you ever had an EKG before? High blood pressure and lung disease are potential causes. There are congenital diseases that cause it, but you're 50. If you have a murmur, you should have an echo. ...Read more

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My son had an EKG today and was told he has incomplete right bundle branch block, he is only 17 should I be concerned?

Probably ok: The pattern that triggers the automatic diagnosis of IRBBB in an ECG machine is an rsr' in lead v1, (pronounced: "r s r-prime in v-1").

This pattern is not uncommon and may represent a normal variant, especially in young people and children.

If other symptoms occur or conditions are suspected, such as an asd, the ECG and patient will need to be evaluated by a cardiologist. ...Read more

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Iv been told I have incomplete right bundle branch block. Docs keep sayin don't worry you had an heart echo a 12 months was normal am worried please help?

Not dangerous: Incomplete rbbb is not a life-threatening finding in and of itself, especially if without symptoms and if your ECG had the same finding last year and echo was normal. ...Read more