The left bundle branch is supplied by both the right and left coronary arteries. Therefore LBBB is common in those with extensive coronary artery disease and can be the consequence of an acute anterior MI. It is also seen in those with hypertension and cardiomyopathy. ECG Features: A widened QRS complex A secondary R wave in V6 Absent Q waves in V5/V6
Right Bundle Branch Block | EMS 12-Lead. All of these QRS complexes are different. Most are positively deflected but some are negatively deflected. Most start with an R wave, but a few start with a Q wave. However, they all share one important feature. They all have a terminal R wave! Why? Ask yourself a question. If the right bundle branch is blocked, which ventricle depolarizes first? The left ventricle! So which ventricle depolarizes last? The right ventricle! What is the only…
Premature Ventricular Contractions. Commonly associated with MVP. ***intermittent, large, wide QRS complexes which are not preceded by a P wave. Otherwise, the rhythm strip appears normal without PR interval, ST segment, P wave or T wave abnormalities.
Bundle branch block is a block of the right or the left bundle branches. The signal is conducted first through the healthy branch and then it is distributed to the damaged side. This distribution takes more time than usual, so the QRS-complex is wider than normal (more than 0.12 s