Dysrhytmias

Question 1

What leads are associated with the right coronary artery?

Answer 1

Lead 2 and 3 and aVf

Question 2

Why do you use synchorinization when cardioverting?

Answer 2

you want the electrical impluse to hit on the R-wave, because if it hits randomly on the rhythm it can cause the rhythm to reset and go into a more serious dysrhythmia

Question 3

What is sinus tachycardia?

Answer 3

a response to a stimulation of the SNS

Question 4

What is sinus bradycardia?

Answer 4

an irregularly slow rhythm, that may be normal in athletes

Question 5

What is sinus arrhythmia?

Answer 5

a change in heart rate with respirations

Question 6

What is premature atrial contractions?

Answer 6

a single ectopic beat from the atrial tissue that may follow or be in a T-wave

Question 7

What is atrial tachycardia?

Answer 7

ectopic focus generates impulses faster than the AV node can conduct them
many P-waves but not all have QRS

Question 8

What is wandering atrial pacemaker?

Answer 8

3 or more different ectopic foci followed by QRS complexes

different P-waves, narrow QRS

Question 9

What is multifocal atrial tachycardia?

Answer 9

wandering atrial pacemaker with a rate greater than 100 bpm

Question 10

What is atrial flutter?

Answer 10

sawtooth like P-waves

Question 11

What is atrial fibrillation?

Answer 11

an uncountable rate or irregular rhythm caused by a quivering atrium

Question 12

What is a junctional escape rhythm?

Answer 12

when the SA node fails to fire

AV node picks up the rhythm

Question 13

What is junctional tachycardia?

Answer 13

when the AV node is signaling the heartbeat, but at an elevated rate for the AV node to normally fire at (greater than 60 bpm)

Question 14

What are PJC’s?

Answer 14

an ectopic focus in the ventricle

Question 15

What is PSVT?

Answer 15

an abrupt onset of SVT from PAC/PJC

Question 16

What is premature ventricular contraction?

Answer 16

a common ventricular dysrhythmia caused by one or more ectopic foci

Question 17

What is ventricular tachycardia?

Answer 17

a life threatening rhythm marked by at least 3 PVC’s in a row

Question 18

What are Torsades de Pointe?

Answer 18

a type of ventricular tachycardia with a prolonged QT interval

Question 19

What is ventricular fibrillation?

Answer 19

a chaotic rhythm caused by quivering ventricles

Question 20

What is idioventricular rhythm?

Answer 20

when the SA and AV node fails so the heartbeat is generated by the Purkinje fibers

Question 21

What is a 1st degree heart block?

Answer 21

a consistent delayed conduction through the AV node as seen by a prolonged PR interval

Question 22

What is a 2nd degree heart block?

Answer 22

Type 1: progressive lengthening of the PR interval until a beat drops and resets
Type 2: regular P-waves with the occasionally missed QRS and frequent dropped beats

Question 23

What is a 3rd degree heart block?

Answer 23

when the atrial rate and ventricular rate aren’t even connected because there is no conduction between the SA and AV node
atrial rate is greater than the ventricular rate

Question 24

What is transcutaneous pacing?

Answer 24

Pacing done externally

Question 25

What is transvenous pacing?

Answer 25

pacing done through a catheter that is inserted percutaneously into the RV and connected to an external pulse generator

Question 26

What is epicardial pacing?

Answer 26

wires that are inserted into the epicardial wall via surgery, the wires are brought the chest wall and can attach to an external pulse generator when needed

Question 27

How is a permanent pacemaker attached to the heart chambers?

Answer 27

via the subclavian or cephalic veins

Question 28

What does a permanent pacemaker pace?

Answer 28

the atrium, ventricle, or both

Question 29

What is the mode of a pacemaker?

Answer 29

Demand: only when needed Fixed: set at a fixed rate

Question 30

What is the electrical output of the pacemaker?

Answer 30

the amount of energy that the pacemaker puts out to cause a depolarization

Question 31

What is the sensitivity of the pacemaker?

Answer 31

the ability of the pacemaker to recognize intrinsic activity of the heart

Question 32

What is the AV internal indicator?

Answer 32

it determines the interval between the atrial and ventricular stimulation only in dual-chamber pacemakers

Question 33

What is failure to pace?

Answer 33

the pacemakers inability to initiate a stimulus

Question 34

What is failure to capture?

Answer 34

the pacemakers inability to depolarize | electrical energy fires, but doesn't get picked up

Question 35

What is failure to sense?

Answer 35

the pacemakers inability to sense the patients own rhythm

Question 36

Where does an inferior MI occur?

Answer 36

the right coronary artery

Question 37

What leads would you see an inferior MI in?

Answer 37

Lead 2, 3, aVf

Question 38

Where does an anterior MI occur?

Answer 38

left anterior descending artery

Question 39

What leads would you see an anterior MI in?

Answer 39

Leads V1-V6 (the precordial leads) | Best seen in V3 and V4

Question 40

Where does a lateral MI occur?

Answer 40

the circumflex and diagonal branch of the left anterior descending

Question 41

What leads would you see a lateral MI in?

Answer 41

Lead 1, aVl, V5 and V6

Question 42

Where does a posterior MI occur?

Answer 42

mid and posterior branches of the circumflex

Question 43

What leads would you see a posterior MI in?

Answer 43

V1 and V2