Electrocardiography (ECG) and Cardiac Monitoring Quiz

Ventricular depolarization is represented by the QRS complex.

Normal PR interval duration on an ECG is between 0.12 to 0.20 seconds.

The approximate normal heart rate range in adults at rest is 60-100 bpm.

The QT interval on an ECG represents the time taken for ventricular depolarization and repolarization.

The typical duration of the QRS complex on an ECG is between 0.06 to 0.12 seconds.

Lead V5 is commonly used for monitoring electrical activity in the lateral wall of the left ventricle.

The QT interval on an ECG represents ventricular repolarization.

Lead I provides a view of the heart's electrical activity in the frontal plane.

A normal sinus rhythm on an ECG features a regular rhythm with upright P waves preceding each QRS complex.

Lead V1 is used to assess electrical activity from the septal wall of the left ventricle.

Asystole is characterized by the absence of electrical activity on an ECG.

Ventricular tachycardia is characterized by a widened QRS complex on an ECG.

A negative deflection in lead aVR on an ECG usually indicates left ventricular hypertrophy.

Atrial fibrillation is characterized by chaotic electrical activity and absence of discernible P waves on an ECG.

A 'sawtooth' pattern on an ECG, often seen in atrial flutter, suggests atrial flutter with a rapid ventricular response.