EKG Lab

Question 1

diagnostic tool to evaluate the heart and measures electrical activity

Answer 1

EKG

Question 2

the pacemaker of the heart

Answer 2

SA node

Question 3

Sequence of electrical activity of heart

Answer 3

SA node in right atrium, left atrium, AV node, Bundle of His, bundle branches, Purkinje fibers, spreads over ventricle surface

Question 4

be able to label an EKG graph

Answer 4

okay… in notes

Question 5

normal PR range in seconds

Answer 5

.12 - .2

Question 6

normal QRS range

Answer 6

<.1

Question 7

normal QT range

Answer 7

<.4

Question 8

P is the

Answer 8

depolarization of atria

Question 9

QRS is the

Answer 9

depolarization of the ventricle

Question 10

T is the

Answer 10

repolarization of the ventricle

Question 11

if PR is prolonged it means a problem with blank and is called a blank

Answer 11

conduction through AV node, first degree heart block

Question 12

if QRS is prolonged it means blank and is usually due to blank

Answer 12

slower speed of stimulus through ventricles, block in bundle branches

Question 13

if QT is prolonged it can be due to these two things

Answer 13

drugs, low Ca or K ions, hypothermia, myocardia/ischemia

Question 14

prolonged QT tends to predispose patient to blank

Answer 14

ventricular arrhythmias

Question 15

shortened QT can be due to these two things

Answer 15

drugs, high serum Calcium ions

Question 16

this is when ventricular systole is skipped

Answer 16

2nd degree heart block

Question 17

You see blank with no blank in a 2nd degree heart block

Answer 17

P, QRS

Question 18

this is when there is no conduction through the AV node

Answer 18

3rd degree heart block

Question 19

3rd degree heart block is when blank waves do not agree with blank

Answer 19

P, QRS

Question 20

this is when there are premature beats arising in ventricles

Answer 20

premature ventricular contraction

Question 21

premature ventricular contraction occurs when the ventricles are not blank

Answer 21

stimulated simultaneously

Question 22

asynchronous contraction of the heart

Answer 22

fibrillation

Question 23

atrial fibrillation shows a blank pattern in place of blank waves on an EKG and is blank life threatening

Answer 23

irregular wavy, P, not

Question 24

ventricular fibrillation shows no blank but shows blank on an EKG and is blank life threatening

Answer 24

cardiac output, irregular waves, very

Question 25

the first heart is due to the closing of blank and occurs during blank on the EKG

Answer 25

AV valves, qrs

Question 26

the second heart is due to the closing of blank and occurs blank on the EKG

Answer 26

semilunar valves, after T

Question 27

heart rate and pulse speed should blank during inspiration

Answer 27

increase

Question 28

heart rate and pulse speed should blank during expiration

Answer 28

decrease

Question 29

during the valsalva maneuver venous return initially blank which causes the baroreflex to blank heart rate. then the amount of blood flow blank because of the maneuver which causes a blank in heart rate due to the baroreflex

Answer 29

increases, decrease, decreases, increase

Question 30

re breathing air from a plastic bag increases the amount of blank which causes the baroreflex to blank heart rate

Answer 30

CO2, increase

Question 31

the higher the ventricular blank, the higher the blank

Answer 31

volume, pressure

Question 32

these two waves could overlap if someone exercises hard enough in an ECG

Answer 32

p and t

Question 33

the angle of the heart increases during blank and decreases during blank

Answer 33

inspiration, expiration

Question 34

normal angle of the heart

Answer 34

60 degrees