The ECG criteria for a right bundle branch block include the following: QRS duration greater than 120 milliseconds; rsR’ “bunny ear” pattern in the anterior precordial leads (leads V1-V3)

2024年10月8日 · Incomplete RBBB is defined as an RSR’ pattern in V1-3 with QRS duration < 120ms. It is a normal variant, commonly seen in children (of no clinical significance). An RSR’ pattern in V1-3 may also be caused by Brugada syndrome — an ECG pattern associated with malignant ventricular arrhythmias. Further reading. Butterly S, Larsen P.

2018年3月8日 · Bunny ears showed up on my EKG. I had also an echo cardiagram that showed my heart was good and operating properly with valves. Blood pressure in and out of heart and everything was normal.

Myth Number 1: If there are no "rabbit ears" there is no RBBB. False false false! Rabbit ears (rSR') do NOT have to be present in V1 during right bundle branch block. Just look at the ECG at the top of this post! Myth Number 2: If the right rabbit ear (R') is taller than the left rabbit ear (r) then you have a normal RBBB and everything is OK.

2023年1月6日 · What does a RBBB look like on an abnormal EKG? If you have a RBBB, it will cause your EKG to have a specific pattern. Every heartbeat creates a wave on the EKG. With a RBBB, that wave is stretched out and another looks like “bunny ears.” What causes a RBBB? Several different things can cause a RBBB. In some people, it’s a normal finding.

2018年6月20日 · Definition: Interruption of the normal conduction system leading to aberrant conduction and an abnormal QRS morphology. Anatomy: At the AV node, conduction splits into the right and left bundle branches. The left bundle branch is composed of anterior and posterior branches. Right Bundle Branch Block (RBBB) Physiology.

2022年7月21日 · Most of us were told to look for “bunny ears” or to use the “turn signal” method, but all you really need for the ECG diagnosis of RBBB are the following: Supraventricular rhythm QRS duration equal or greater than 120 ms (0.12 s)

2024年10月8日 · Although there is a broad complex tachycardia (HR > 100, QRS > 120), the appearance in V1 is more suggestive of SVT with aberrancy, given that the the complexes are not that broad (< 160 ms) and the right rabbit ear is taller than the left.

Bundle branch blocks and hemiblocks are conduction abnormalities that affect the heart’s electrical system, specifically the bundle of His and its branches. These conditions can alter the normal sequence of ventricular depolarization, leading to characteristic changes on the EKG.

The ECG criteria for a right bundle branch block include: QRS duration of > 120 milliseconds; rsR' "bunny ear" pattern in precordial leads; Slurred S waves in leads I, V5, and V6.