Chapter 6 & 7

Question 0

Number of electrical impulses conducted through the myocardium in 60 seconds

Answer 0

Heart rate

Question 1

What are the steps in the five step approach for interpreting EKGs

Answer 1

Step 1: Heart rate 
Step 2: Heart rhythm 
Step 3: P wave 
Step 4: PR interval 
Step 5: QRS complex

Question 2

Heart rate of less than 60 BPM

Answer 2

Bradycardia

Question 3

Heart rate greater than 100 BPM

Answer 3

Tachycardia

Question 4

The sequential beating of the heart as a result of the generation of electrical impulses

Answer 4

Heart rhythm

Question 5

To determine if atrial rate is regular you measure from

Answer 5

P to P wave

Question 6

To determine whether the ventricular rhythm is regular you measure from

Answer 6

R to R wave

Question 7

To determine if a heart rhythm is regular the intervals usually vary by less than? If greater than that it’s considered irregular

Answer 7

.06 seconds.. Irregular

Question 8

Irregular rhythms that occur in a pattern

Answer 8

Regularly irregular

Question 9

Intervals of only one or two R-Rs are uneven

Answer 9

Occasionally irregular

Question 10

R-R intervals exhibit no similarity

Answer 10

Irregularly irregular

Question 11

Five questions you should ask when evaluating P waves

Answer 11

Are they present
Are they occurring regularly 
Is there one for every QRS complex 
Are they smooth, rounded and upright, or are they inverted
Do they look similar

Question 12

Three questions that should be asked when evaluating PR intervals

Answer 12

Are they greater than .20 seconds
Are they less than .12
Are they constant across the strip

Question 13

Three questions that should be asked when evaluating QRS intervals

Answer 13

Are they greater than .12 seconds
Are they less than .12 seconds wide
Are they similar in appearance

Question 14

EKG waveforms from sources outside the heart

Answer 14

Artifact

Question 15

Normal sinus rhythm

Answer 15

Rate 60-100 
Rhythm regular
P wave present and regular 
PR interval = .16 
QRS complex = .06

Question 16

The rhythm that occurs when the SA node has generated an impulse that followed the normal pathway of the electrical conduction system and lead to atrial and ventricular depolarization

Answer 16

Normal sinus rhythm

Question 17

SA node intrinsic rate

Answer 17

60-100

Question 18

AV node intrinsic rate

Answer 18

40-60

Question 19

Purkinje network intrinsic rate

Answer 19

20-40

Question 20

In this rhythm the SA node discharges impulses at a rate of less than 60 BPM

Answer 20

Sinus Bradycardia

Question 21

A variant of normal sinus rhythm; the rate is generally considered to be 100 to 160 BPM

Answer 21

Sinus tachycardia

Question 22

An irregular rhythm produced when the P to P intervals change with respirations

Answer 22

Sinus dysthymia

Question 23

When the sinus node fails to discharge, the absence of a PQRST interval is noted on the rhythm strip

Answer 23

Sinus arrest rhythm