Dysrhythmias Ppt/4

Question 1

a fib is often acutely caused by

5

Answer 1

1. thyrotoxicosis
2. alcohol intoxication
3. caffeine
4. electrolyte disturbance
5. cardiac surgery

Question 2

a fib significance - can often result in

Answer 2

decrease in CO because of ineffective atrial contractions and rapid ventricular response

Question 3

a fib - drugs for rate control include

3

Answer 3

1. digoxin
2. beta blockers
3. CCBs

Question 4

irregular R to R

Answer 4

a fib

Question 5

first degree block tx

Answer 5

no tx

Question 6

a fib - irregular ____ to ____

Answer 6

R to R

Question 7

first degree block may be precursor to

Answer 7

higher degrees of AV block

Question 8

first degree block PR interval

Answer 8

greater than .12

Question 9

PR interval is usually what time if normal

Answer 9

.12

Question 10

can be caused by valvular disease, underlying heart disease, cardiomyopathy, pericarditis

Answer 10

a fib

Question 11

a fib usually occurs with

4

Answer 11

1. underlying heart disease, such as rheumatic heart disease
2. cardiomyopathy
3. CHF
4. pericarditis

Question 12

total disorganization of atrial activity without effective atrial contraction; chronic or intermittent

Answer 12

a fib

Question 13

stroke risk in a fib is even higher in who?

3

Answer 13

1. structural heart disease
2. HTN
3. age over 65

Question 14

first degree AV block - PR is prolonged but what is still normal

Answer 14

qrs is normal so it’s still sinus rhythm

Question 15

most dangerous time for pt with a fib

Answer 15

when they go down for cardioversion and are not on anticoagulation therapy

Question 16

if a fib is chronic, you’re looking to get them to

Answer 16

controlled ventricular response

Question 17

1st degree AV block

Answer 17

every impulse is conducted to the ventricles, but duration of AV conduction is prolonged

Question 18

may be used to convert a fib to normal sinus rhythm

Answer 18

DC cardioversion

Question 19

a fib

Answer 19

total disorganization of atrial activity without effective atrial contraction; chronic or intermittent

Question 20

a fib - anticoagulation therapy recommended for how long

Answer 20

3-4 weeks in a fib > 48 hours before attempt at conversion to sinus rhythm

Question 21

a fib stroke

Answer 21

five times greater at risk

Question 22

a fib tx goal is to

Answer 22

decrease in ventricular response and conversion to sinus rhythm

Question 23

every impulse is conducted to the ventricles, but duration of AV conduction is prolonged

Answer 23

1st degree AV block

Question 24

first degree block s/s

Answer 24

usually asymptomatic

Question 25

a fib - antiarrhythmic drugs used for

Answer 25

conversion

Question 26

a fib rarely occurs in ___ individuals

Answer 26

healthy

Question 27

a fib is a _____ rhythm

Answer 27

irregular

Question 28

a fib - tx to prevent strokes

Answer 28

anticoag with coumadin