The image below shows the typical findings of a left bundle branch block in the precordial ECG leads. Enlarge Note: If the QRS duration is 100 to 119 ms with criteria 2, 3 and 4 of the above, an ...

Heart blocks, unlike Bundle branch blocks, indicate a non-sinus rhythm. Bundle branch blocks can occur in normal sinus rhythm, and signify a block in electrical conduction through the right or left ...

Bundle branch blocks are abnormalities of the heart’s conduction system that show up an electrocardiogram (ECG), which is a tracing of the electrical activity in the heart.

A “normal” EKG is one that shows what is known as sinus rhythm. ... These beats usually display a right bundle branch block ... the rhythm after this will be normal sinus rhythm.

E There is a complete right bundle branch block Question 3. You are reviewing a patient with suspected heart failure. There is no cardiac history but the patient does have a longstanding history of ...

This is a normal sinus rhythm. The QRS complex duration is prolonged (0.12 sec) without the morphology typical of right or left bundle branch block, although a terminal S wave is present in lead ...