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) ...

The causes of the R wave in lead V1 greater in amplitude than the S wave include right bundle branch block (RBBB), posterior myocardial infarction, Wolff-Parkinson-White syndrome type A, right ...

Figure 1 (A) Borderline Brugada ECG pattern mimicking incomplete right bundle branch block (RBBB). Unlike the R wave of RBBB, the J wave (arrows) of the Brugada ECG is confined to right precordial ...

With Brugada syndrome, the ECG tracings in V1, V2, and V3 have a distinct pattern. The QRS is widened and has two upward peaks. This resembles the pattern in an RBBB.

ECG Challenge: Unusual Heart Sound in a Woman With CV Risk Factors. Philip J. Podrid, MD. Disclosures. October 21, 2021. The correct diagnosis is sinus rhythm, RBBB, and V1-V3 lead switch (Figure 2).

Cardiology was consulted when the initial ECG raised concerns for OMI, and with each subsequent ECG and increase in troponin results (40 ng/dL, 250 ng/dL, and 2400 ng/dL; normal <5.0 ng/dL).

Question 1 Right bundle branch block. Explanation. There is clearly a broad QRS complex which is predominantly positive in V1 indicative of RBBB. You can also see an RSR pattern to the QRS complex in ...

In fact, up to 60% of athletes demonstrate ECG changes (in isolation or in combination) such as sinus bradycardia, sinus arrhythmia, first-degree atrioventricular (AV) block, early repolarisation, ...

Noted are several QRS complexes that have an increased duration (0.12 sec) with a right bundle branch block (RBBB) morphology with an RSR’ morphology in lead V1 (←) and a broad terminal S wave ...

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.