Pre excitation and SVT

Question 1

What are the possible electrical pathways to the ventricles from the SA node?

Answer 1

Question 2

What is the alpha pathway?

Answer 2

Question 3

What is a beta pathway? How many are there?

Answer 3

Question 4

What are beta pathways also known as?

Answer 4

Question 5

What are possible triggers that can activate beta pathways?

Answer 5

Question 6

What are the Electrical Properties Of The Alpha (Normal) Pathway?

Answer 6

Question 7

Electrical Properties Of The Beta (Abnormal) Pathways?

Answer 7

Question 8

What happens when preexcitation occurs with tachycardia?

Answer 8

Question 9

Answer 9

Short

Question 10

Answer 10

Normal

The conduction still travels down the normal Purkinje system

Question 11

What is the accessory pathway for Wolff Parkinson White (WPW) called?

Answer 11

Question 12

What will the Wolff Parkinson White ECG look like?

Answer 12

Question 13

Patients that have Wolff Parkinson White & Tachycardia, anesthetists should avoid what?

Answer 13

Question 14

What are treatment options for WPW?

Answer 14

1. Transvenous catheter ablation
2. Antiarrhythmic drugs (beta blockers, amiodarone)
3. Synchronized cardioversion if the patient is unstable

Question 15

Why should in Wolff Parkinson White, providers should avoid antiarrhythmic drugs that block conduction through the AV node?

Answer 15

Question 16

What is the accessory pathway in Lown Ganong Levine (LGL) Syndrome called?

Answer 16

Question 17

Lown Ganong Levine (LGL) Syndrome ECG

Answer 17

Question 18

What symptoms does a patient with Lown Ganong Levine (LGL) Syndrome have?

Answer 18

Question 19

What are the accessory pathways in Mahaim Preexcitation called?

Answer 19

Question 20

What will the ECG show in a Mahaim Preexcitation?

Answer 20

Question 21

Preexcitation Summary

Answer 21

Question 22

What is Supraventricular Tachycardia (SVT)?

Answer 22

Question 23

ECG Identification Of SVT

Answer 23

Question 24

What are Symptoms Of SVT, and how quickly should you treat it?

Answer 24

Question 25

What is “Paroxysmal” SVT?

Answer 25

Question 26

Question:

Answer 26

Question 27

Question: PAC

Answer 27

1. If a PACoccurs, the impulse travels ANTEGRADE through the slow alpha pathway only
   ‒(because the accessory pathway from the previous beat is still refractory)
2. The accessory pathway will then repolarize while the impulse is traveling down the AV node
3. The impulse travels RETROGRADE through the fast accessory pathway
   ‒(because the accessory pathway has repolarized at this point)
4. Theimpulse is able to travel ANTEGRADE down slow the alpha pathway again
   ‒(because the short refractory period of the alpha pathway is short)

Question 28

What happens to the ECG when reentry occurs within the AV node only during SVT after a PAC?

Answer 28

Question 29

SVT Within The AV Node?

Answer 29

Question 30

Treating SVT Within The AV Node (AVNRT)

Answer 30

Question 31

When is a Vagal Maneuver (Carotid Massage) contraindicated?

Answer 31

Question 32

Vagal Maneuver (Cold Stimulus)

Answer 32

Question 33

Pharmacology and dose of adenosine?

Answer 33

Question 34

Pharmacology and dose of Sotalol?

Answer 34

Question 35

Treatment Summary For SVT Within The AV Node

Answer 35

Question 36

SVT Within The Myocardium

Answer 36

Question 37

Is AVRT the same thing as Wolff Parkinson White?

Answer 37

Question 38

Treatment For SVT Within The Myocardium

Answer 38

Question 39

Avoiding AV Node Blockers In AVRT: Why?

Answer 39

Question 40

Treatment Summary For SVT

Answer 40

Question 41

Options for Left Atrial Appendage (LAA) Closure

Answer 41