PCT EKG (Lead placement)

The pads applied to a patient’s skin for an EKG are called

• (A) Electrodes

• (B) Leads

• (C) Lead wires

• (D) Monitors

What feature of electrodes allows electrical signals to be transmitted from the pad to the lead wire?

• (A) The shape of the pad

• (B) A conductive gel in the pad

• (C) The adhesive on the pad

• (D) The paper backing on the pad

. The augmented limb leads are

• A) A1, A2, and A3

• (B) V1, V2, V3, V4, V5, and V6

• (C) aI, aII, and aIII

• (D) aVR, aVL, and aVF

Where are the three leads for continuous monitoring usually placed?

• (A) Right upper torso, left upper torso, and right lower torso

• (B) Right upper torso, left upper torso, and left lower torso

• (C) Right lower torso, left lower torso, and left upper leg

• (D) Right upper leg, left upper leg, and right lower torso

How many electrodes are required for a 12-lead EKG test?

• A) 5

• (B) 8

• (C) 10

• (D) 12

Why should an EKG machine be placed near the patient?

• (A) So the patient can see the readout on the screen

• (B) To allow the patient to type in her name and other details

• (C) Because the machine cannot read signals from farther away

• (D) Because tension in the lead wires can distort the EKG tracing

When an EKG is set to default paper speed, how many one-millimeter blocks on the tracing represent one second of cardiac activity?

• (A) 10

• (B) 20

• (C) 25

• (D) 50

What is the effect of increasing the speed at which EKG paper passes through the machine?

• (A) It makes the features on the tracing more densely packed together

• (B) It makes the features on the tracing more spread out

• (C) It makes the features on the tracing taller

• (D) It makes the features on the tracing shorter.

. At standard gain, how high is the calibration mark on an EKG tracing?

• (A) 5 mm

• (B) 10 mm

• (C) 15 mm

• (D) 25 mm

Which cardiac test may be ordered to get information about the mechanical function of the heart?

• (A) Electrocardiogram

• (B) Stress test

• (C) Chest X-ray

• (D) Echocardiogram