U2_M4-5_Test

An R wave represents:

• The first positive deflection following the P wave

• The T wave

• The S wave

• Ventricular repolarization

How can motion artifacts be minimized?

• Increasing ECG paper speed

• Asking the patient to stay still

• Increasing electrode size

• Changing ECG lead position

How many small squares are there within each large square, just counting along the x-axis, on ECG paper?

(a)  

Normal P waves are usually no more than:

• 3 mm in height

• 2.5 mm in height

• 1 mm in height

• 4 mm in height

R-R intervals are used to determine:

• Ventricular rate and regularity

• Atrial rate only

• P wave abnormalities

• Voltage amplitude

The 6-second method involves counting QRS complexes in a 6-second strip and multiplying by:

• 5

• 10

• 50

The P wave on an ECG represents:

• Ventricular depolarization

• Atrial depolarization

• Ventricular repolarization

• Atrial repolarization

The PR interval includes which parts of the ECG?

• P wave and PR segment

• QRS complex

• ST segment

• U wave

The QT interval on an ECG represents:

• Total ventricular activity

• Atrial activity

• Only ventricular depolarization

• Heart rate

The T wave on an ECG indicates:

• Ventricular repolarization

• Atrial repolarization

• Ventricular depolarization

• Atrial depolarization