16 supraventricular tachycardia

Question 1

supraventricular tachycardia (SVT)

• ___ rhythm
• ___ QRS complexes
• HR 110 - ___ bpm
• spontaneous initiation and termination

Answer 1

• regular
• narrow
• 250

Question 2

what is this?

Answer 2

SVT

Question 3

SVT

PSVT - paroxysmal SVT
- ___ episodes of SVT
- episodes start and terminate suddenly and spontaneously (min-hours)

Answer 3

intermittent

Question 4

SVT

mechanism: ___ within
- ___ node (60%)
- accessory pathway ( ___ ) 30%
- atria (4-8%)
- SA node (4%)

Answer 4

re-entry
- AV
- wolff-parkinson-white syndrome

Question 5

SVT

etiologies/risk factors
- ___ (2x higher risk)
- age > ___ (5x greater risk)
- no underlying CVS

Answer 5

women
65

Question 6

SVT goals of therapy

• terminate SVT, restore ___
• prevent recurrences

Answer 6

sinus rhythm

Question 7

drugs for termination of SVT (4)
MOA: inh AV node, terminates re-entrant pathway

Answer 7

adenosine, BB, dilt, verap

Question 8

algorithm for termination of hemodynamically stable SVT

1) ___ maneuvers or IV ___

if not effective

2) IV ___ , ___ , or ___

if not effective
3) synchronized ___

Answer 8

vagal, adenosine
BB, dilt, verap
DCC

adenosine is effective in 90% of patients

Question 9

algorithim for prevention of SVT recurrence

no symptoms = clinical follow up, no treatment

symptoms: does pt want ablation? no
- no HFrEF: ___ , ___ , or ___
- if not effective: ___ and ___ *
- LVEF < 40: ___ , ___ , ___ , or ___

* CI in patients with CAD

Answer 9

• BB, dilt, verap
• flec, propaf
• amiodarone, dig, dofetilide, sotalol