ECG quiz

Normal P wave is always positive in except

• Lead aVF

• Lead aVR

• Lead III

• Lead II

Following are the features of Myocardial Ischemia except

• ST segment elevation

• Abnormality in U wave

• T wave inversion, deep and symmetrical

• Tall R wave

Which coronary arteries are most likely occluded if there are ST-segment elevations in leads II, III, and aVF?

•  Left anterior descending artery

• Left Circumflex artery

• Right coronary artery

• Left main coronary artery

In a patient with a suspected posterior MI, which additional ECG leads should be placed to confirm the diagnosis?

• V7, V8, V9

• V3R, V4R

• I, aVL

• V1, V2

Following are the features of LBBB

• QRS duration ≥ 120ms

• Broad monophasic R wave in lateral leads (I, aVL, V5-6)

• Wide, slurred S wave in lateral leads (I, aVL, V5-6)

• RSR' pattern in V1-3 ("M-shaped" QRS complex)

Which ECG finding is most characteristic of a Right bundle branch block (RBBB)

• Monophasic R wave in lead V1

• RSR' pattern in lead V1

• Wide S wave in leads V1-V3

• ST-segment elevation in leads I and aVL

Which pharmacological treatment is indicated for symptomatic bradycardia in the context of hemodynamic instability?

• Beta-blockers

• Calcium channel blockers

• Atropine

• ACE inhibitors

Given ECG belongs to which Degree of AV Block

• First-degree AV block

• Second-degree AV block

  Mobitz type I

• Second-degree AV block

  Mobitz type II

• Third-degree AV block

Which of the following is a common feature of first-degree atrioventricular (AV) block on ECG?

•  PR interval less than 120 ms

• Dropped QRS complexes

• Variable PR intervals

• PR interval greater than 200 ms

Decremental conduction is a property of

• Purkinje fibres

• AV node

• HIS bundle

• SA node