ECG 201

Normal ECG is done using ........ electrodes

• 12 electrode (6 limbs & 6 chest)

• 12 electrodes ( 4 limbs & 8 chest)

• 10 electrodes (4 limbs & 6 chest)

• 10 electrodes (5limbs & 5 chest)

Regarding normal ECG, which lead is normally negative compared to other leads?

• aVL

• aVR

• lead III

• V5

prolonged PR interval on ECG can be a sign of :

• sinus tachycardia

• wolf-parkinson white Syndrom

• sinus bradycardia

• hypertension

which electric change of the following is not plotted as a wave on normal ECG?

• atrial depolarization

• atrial repolarization

• ventricular depolarization

• ventricular repolarization

which of the following can be a strong positive sign in MI (myocardial infarction)?

• elevated ST segment

• peaked P-wave

• inverted P-wave

• short P-R interval

In normal ECG, the electrode that is used as a guard (for earthing) is ?

• Rt. arm

• Rt. leg

• Lf. arm

• Lf. leg

in cases of hyperkalemia (high K levels) the T-wave is usually ?

• peaked

• flat

• inverted

• absent

which of the following can be a strong positive ECG finding in AF (atrial fibrillation) ?

• elevated ST segment

• inverted P-wave

• bizzare QRS complex

• absent P-wave