Basic EKG interpretation

Question 1

where is the SA node located

Answer 1

back of the right atrium near superior vena cava

Question 2

what is the function of the backmann’s bundle

Answer 2

transmit the impulse from right to left atrium

Question 3

what is the function of the internodal pathways

Answer 3

transmit the impulse from SA to AV node

Question 4

what pacemaker is called the gatekeeper of the ventricles

Answer 4

AV node

Question 5

what is the function of the slowing down of the conduction velocity in the AV node

Answer 5

to allow atrial contraction

Question 6

how many beats per min does the Bundle of His generate?

how about the bundle branches?

Answer 6

40 - 60 bpm

20 - 40 bpm

Question 7

how many beats per min does the purkinje fibers generate

Answer 7

20 - 40 bpm

Question 8

which of the cardiac pacemaker cells generate agonal rhythm

Answer 8

purkinje fibers

Question 9

what is the normal rate of the junctional rhythm

Answer 9

40 - 60 bpm

Question 10

where does junctional rhythm originate from

Answer 10

AV node

Question 11

what two medications are given to treat PVC

Answer 11

lidocaine
amio

Question 12

what is the most common cause of periop cardiac arrhytmias ?

Answer 12

intubation

Question 13

what 2 things given in the OR can cause hyperkalemia

Answer 13

succ
large volume infusion

Question 14

what is the effect of the oculo-cardiac reflex

Answer 14

brady; asystole

Question 15

what does catecholamine excess do

Answer 15

causes tachycardia