Deck 5: The Electrocardiogram

Question 1

In Einthoven's triangle,which side of the triangle is formed by lead II?

A) From left arm to left leg
B) From right arm to left leg
C) From right arm to left arm
D) From left leg to right leg

Answer 1

B

Question 2

EKG paper leaves the machine at a constant speed of ________ millimeters per second.

A) 75
B) 50
C) 15
D) 25

Answer 2

D

Question 3

EKG paper is divided into small squares. Each is 1 mm in height and width and represents a time interval of:

A) 0.04 seconds.
B) 0.12 seconds.
C) 0.20 seconds.
D) 0.08 seconds.

Answer 3

A

Question 4

Which side of Einthoven's triangle is formed by lead I?

A) From right arm to left leg
B) From left leg to right leg
C) From left arm to left leg
D) From right arm to left arm

Question 5

The baseline on an EKG strip is also referred to as a(n)________ line.

A) middle
B) central
C) isoelectric
D) graph

Question 6

EKG is a graphic tracing of the ________ activity of the heart.

A) electrical
B) universal
C) mechanical
D) action

Question 7

The chest leads are also called ________ leads.

A) augmented
B) precordial
C) standard
D) bipolar

Question 8

The distance from the beginning of the P wave to the beginning of the QRS complex is represented by the:

A) ST interval.
B) PR interval.
C) J interval.
D) QRS interval.

Question 9

Darker lines further divide EKG graph paper every fifth square. Each large square measures 5 mm in height and width and represents a time interval of:

A) 0.20 seconds.
B) 0.10 seconds.
C) 0.4 seconds.
D) 0.12 seconds.

Question 10

The printed record of the electrical activity of the heart is called a(n):

A) rhythm strip.
B) electrode.
C) view.
D) lead.

Question 11

5 small squares are equal to:

A) 2.5 sec.
B) 25 sec
C) 0.20 sec.
D) 5 sec.

Question 12

An adhesive pad that contains conductive gel and is designed to be attached to the patient's skin is a(n):

A) stimulator.
B) strip.
C) electrode.
D) lead.

Question 13

On the EKG graph paper,time is measured on the horizontal plane.

Question 14

Graphic representation of the electrical activity of the heart is recorded in the form of a(n):

A) ultrasound.
B) electrocardiogram.
C) sonogram.
D) angiogram.

Question 15

Leads that have one positive and one negative electrode are:

A) biphasic.
B) bipolar.
C) multipolar.
D) unipolar.

Question 16

The ________ is the straight line seen on an EKG that represents the beginning and the end point of all waves.

A) interval
B) impulse
C) system interval
D) baseline

Question 17

The wave that represents depolarization of both atria is the ________ wave.

A) R
B) T
C) S
D) Q

Question 18

Which leads are the standard leads?

A) I,II,III
B) aVR,aVL,aVF
C) v4,v5,v6
D) v1,v2,v3

Question 19

Which leads are bipolar?

A) v4,v5,v6
B) v1,v2,v3
C) aVL,aVF,V6
D) leads I,II,III

Question 20

In the standard lead II,the current flows:

A) positive to ground.
B) negative to positive.
C) positive to negative.
D) negative to ground.

Question 21

Normally,one complete cardiac cycle is represented by the:

A) QRS pattern.
B) PR pattern.
C) PQRST pattern.
D) R on T pattern.

Question 22

The T wave is often referred to as the ________ phase of the cardiac cycle.

A) resting
B) intense
C) working
D) moving

Question 23

All of the following information can be obtained from the EKG strip analysis EXCEPT:

A) regularity.
B) cardiac output.
C) rhythm.
D) heart rate.