One MCQ a day- 15.04.2015

MCQ 15.04.2015 Which of the following statements describes the ECG findings of Intramural septal premature ventricular contractions ? A. RBBB morphology with inferior axis B. RBBB morphology with superior axis C. LBBB morphology with inferior axis D. LBBB morphology with superior axis   Explanation: Intramural septal PVCs arise from the interventricular septum. They have been […]

One MCQ a day- 14.04.2015

Answer to the question on 13.04.2015: Answer : A (Right ventricular outflow tract) Explanation: 12-lead electrocardiographic (ECG) morphology helps in identifying the PVC origin Left bundle branch block morphology with an inferior axis indicates an outflow tract origin of the PVCs, with a late precordial transition (>V3) pointing to an origin in the right ventricular outflow tract, and an […]

One MCQ a day: 13.04.2015

Answer to the question on 12.04.2015: Answer : A Explanation: The ECG is showing atrial fibrillation with fast ventricular rate. The important issue in this ECG is that the ventricular rate is extremely fast, reaching up to 300 bpm. AF with very fast ventricular rate is suggestive of conduction over bypass tracts. Patients with preexcited atrial […]

One MCQ a day – 12.04.2015

Answer to the question on 11.04.2015 Answer : D localizing the AP 1. Left free-wall APs are associated with positive delta waves in lead V1 and negative delta waves in leads I and aVL 2. The ECG in a patient with a manifest right-sided AP shows a negative delta wave in lead V1 and positive delta waves in […]

One MCQ a day – 11.04.2015

Answer to the question on 10.04.2015 Answer: B Accessory pathways are anomalous bypass tracts composed of working myocardial cells. Most APs insert along the mitral or tricuspid valve and are referred to as AV accessory pathways. Approximately 60% of APs insert along the mitral valve and are referred to as left free-wall pathways. About 25% insert along the septal aspect of […]

One MCQ a day – 10.04.2015

One Cardiology MCQ a day I will  post one MCQ on cardiology per day and next day I will submit the answer. So lets test our knowledge on cardiology. Q.  Which of the following statements about location of accessory pathways (AP) is correct? A.  10% of APs  are left free-wall pathways, 80% are septal and […]

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