BASIC EKG FLIPPED

Multiple Choice

The EKG represent the electrical current of the heart. What component of the EKG represent the ventricular repolarization?

• P wave

• ST segment

• T wave

• U wave

Multiple Choice

What lead define an axis in the frontal plane at 0°?

• DII

• AvF

• DI

• AvL

• DIII

Multiple Choice

What electrical event is represented by the PR interval?

• Atrial repolarization

• Ventricular repolarization

• Atrial depolarization + conduction through the AV node + His-Purkinje system

• Electrocardiographic silence

• Atrial repolarization + ventricular repolarization

Multiple Choice

What is correct about the Q wave?

• It is the first positive deflection of the QRS complex

• It is a negative deflection that follows the R wave

• It is the first negative deflection of the QRS system

• Represent electrocardiographic silence

Multiple Choice

What wave represents the depolarization of the Left Ventricle myocardium?

• Q wave

• R wave

• S wave

• R' wave

Multiple Choice

What mechanical event (clinical response) is happening during the ST segment?

• Ventricular relaxation

• Atrial relaxation

• Atrial contraction

• Ventricular contraction

Multiple Choice

What electric event is represented by the T wave?

• Ventricular depolarizaton

• Atrial repolarization

• Atrial depolarization

• Ventricular repolarization

Multiple Choice

What electrocardiogram elements compose the QT interval?

• P wave + QRS complex + ST segment

• QRS complex + ST segment

• ST segment + T wave

• QRS complex + ST segment + T wave

Multiple Choice

What is the formula used for the calculation of QTc (Corrected QT interval)?

• QTc = QT interval / $$\sqrt[]{}$$  RR interval in sec

• 60 sec / RR interval

• 300 / #of large boxes in the RR interval

Multiple Choice

In order to calculate the heart rate, what of the following is required?

• Measure R - R interval

• Calculate QTc

• Measure ST segment

• Measure P-R interval

• Measure QRS complex