ECG quiz

Most common ECG abnormality in Pulmonary thrombo-embolism

• S1Q3T3

• Right axis deviation

• Right ventricular strain pattern

• Sinus tachycardia

Answer explanation

Sinus tachycardia (44%)

Complete or incomplete RBBB (18%)

Right ventricular strain pattern –  (34%)

Right axis deviation (16%).

Dominant R wave in

P pulmonale (9%)

S_I Q_III T_III  pattern (20%). This “classic” finding is neither sensitive nor specific for PE

Clockwise rotation

Atrial tachyarrhythmias

Criteria for diagnosis of MAT include

• Irregularly irregular rhythm

• Three or more distinct P wave morphologies in different leads

• Single atrial pacemaker

• Heart rate of >100

Spot diagnosis of a clinical condition with the above ECG

QRS axis

• Right axis deviation

• Left axis deviation

• Normal axis

• Extreme axis deviation

Diagnosis

• Septal NSTEMI

• RBBB

• RV Strain pattern

• Right ventricular hypertrophy

P wave in COPD

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Which of the following ECG represents MAT

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Calculate the heart rate

Answer explanation

The entire ECG strip is 10 seconds longs.

Rate = No. of QRS complexes x 6