Exam 1 - Dysrhythmias Flashcards Preview

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Flashcards in Exam 1 - Dysrhythmias Deck (24):
1

how to antidysrhythmics work?

alter the electrical properties of the heart

2

what are the two ways that anti-dysrhytmics alter the electrical properties of the heart

blocking flow through ion channels (conduction)
altering autonomic activity (automaticity)

3

what type of drugs treat rhythm control?

potassium channel blockers
sodium channel blockers
digitalis

4

what type of drugs treat rate control

calcium and beta blockers

5

what should we obtain when starting anti-dyssrhythmics

baseline EKG
vital signs
history of HTN
heart failure
MI

6

what does sodium channel blockers do

prevent ventricular depolarization

7

monitor VS
obtain hepatic, renal, and electrolyte lab values
monitor drug plasma levels during therapy
monitor for changes in ECG
monitor for dry mouth, constipation, and urinary retention
monitor for seizures
obtain med history

sodium channel blockers

8

what happens with beta blockers?

decreases rate through the AV node

9

decreased conduction results in slower HR, decreased contractility, and decreased CO -- what drug?

beta blockers

10

what type of dysrhythmias do beta blockers treat

atrial

11

what drugs end in -olol

beta blockers

12

what drug is contraindicated in heart block patients, severe bradycardia, av block and asthma

beta blockers

13

monitor vitals
watch for hypotension
monitor blood sugar
caution to not immediately stop taking
monitor elderly for cognitive dysfunction/depression/hallucinations

beta blockers

14

these drugs are saved for the worst dysrhytmias

potassium channel blockers

15

amiodarone

potassium channel blocker

16

what does amiodarone treat

ventricular and atrial dysrhythmias

17

dofetilie and ibutilide treat what

atrial fibrillation and atrial flutter

18

assess for cough and dyspnea
use cautiously with heart block
monitor ECG
monitor for weight gain, decreased urine output, dyspnea and lung crackles

potassium channel blockers

19

what do calcium channel blockers do to the nodes

slowed impulse thru AV

20

only dysrhythmia treated by calcium channel blockers is

supraventriucular dysrhytmias

21

too much heparin?

protamine sulfate

22

normal hemoglobin

12.5 - 15.5

23

hct

36 to 54%
women 36-48
men 40-54

24

platelets

150,000-450,000