Exam 2: Arrhythmias

Question 1

at resting the __ gates of sodium channels are closed, at activation they ___, at inactivation they ___

Answer 1

m, open, close

Question 2

beta agonists cause us to get to threshold ___

Answer 2

quicker

Question 3

afterdepolarizations occur in what phases

Answer 3

2,3,4

Question 4

type 2 or 3 block is treated with what

Answer 4

transcutaneous pacing or a pacemaker

Question 5

to treat a block we need to ___ down the circular current and __ with the next AP. drugs that will block ___ or ___ current

Answer 5

slow, sync. sodium or calcium

Question 6

class 1: sodium channel blockers, 1A are what? and what do they do

Answer 6

quinidine, procainamide, prolong the APD

Question 7

class 1a __ pacemaker rate and lengthens __ interval

Answer 7

deprsses, QT

Question 8

class 1b drug and MOA

Answer 8

lidocaine, shorten APD

Question 9

class1C drug and MOA

Answer 9

flecainide, slow dissociation of sodium

Question 10

class 2 are ___, they decrease __ rate

Answer 10

beta blockers, pacemaker

Question 11

class 3 are ___, they work by ___ cardiac K channels. drug?

Answer 11

potassium channel blockers, blocking, amio

Question 12

amio is the ___ for VT

Answer 12

DOC

Question 13

what drug is the only antiarrhythmic for all 4 classes

Answer 13

amio

Question 14

class 4 is ___, drug? MOA

Answer 14

calcium channel blocker, verapamil, blocks AP in SA and AV node

Question 15

4 drugs that are miscellaneous agents

Answer 15

digoxin, adenosine, mag, potassium

Question 16

ST is treated with first?

Answer 16

adenosine then CCB

Question 17

vtach drug acute and chronic

Answer 17

amio

Question 18

afib treatment acute

Answer 18

dilt and verap

Question 19

chronic afib

Answer 19

beta and amio

Question 20

chronic vfib

Answer 20

amio and lido