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EP 101 > VT > Flashcards

VT Flashcards

1
Q

abnormal fast rhythm that originates within the ventciles

A

ventricular tachyarrhythmia (VT)

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2
Q

reentry caused by slow conduction through diseaseed myocardial tissue

A

VT

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3
Q

VT is most common in patients who have

A

ischemic heart disease

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4
Q

one reentrant circuit

A

monophonic

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5
Q

consistent morphology (type of VT)

A

monomorphic

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6
Q

more than one reentrant circuit (VT)

A

polymorphic

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7
Q

varying morphology (type of VT)

A

polymorphic

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8
Q

Reentrant VT is primary underlying rhythm of

A

sudden cardiac death (SCD)

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9
Q

SVT or VT

AV dissociation is present in 50% of patients

A

VT

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10
Q

SVT or VT

inducible from ventricule but not atrium

A

VT

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11
Q

SVT or VT

QRS duration is often >140 ms

A

VT

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12
Q

SVT or VT

QRS axis is usually

A

VT

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13
Q

SVT or VT

no response from adenosine

A

VT

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14
Q

SVT or VT

QRS morphology is atypical for bundle branch block or preexcitation

A

VT

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15
Q

SVT or VT

AV dissociation is never present

A

SVT

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16
Q

SVT or VT

Inducible from the atrium

A

SVT

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17
Q

SVT or VT

QRS duratoin is <140 ms

A

SVT

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18
Q

SVT or VT

QRS acis is usually >-30 degrees

A

SVT

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19
Q

SVT or VT

adenosine either restores the sinus rhythm or causes transient rhythm changes

A

SVT

20
Q

QRS morphology may indicate bundle branch block or preexcitation (delta wave)

A

SVT

21
Q

VT is diagnosed by demonstrating ___ is not part of the VT mechanims.

A

atria

22
Q

50% of patients with VT and never present in SVT

A

AV dissociation

23
Q

VT with AV dissociation _____ have retrograde conduction over the AV node

A

does not have

24
Q

presence of AV dissociation confirms what

A

VT diagnosis

25
Q

Adenosines restores SR in VT

A

NO

26
Q

macroreentrant circuit forms around infarcted scar tissue

A

scar-related reentry

27
Q

QRS duration for scar-related vt

A

> 140ms

28
Q

macroentrant circuit forms around the interventircular septum

A

typical bundle branch reentry

29
Q

typical bundle branch travel pattern

A

down RBB (slow)
across septum
up left bundle branch (fast)
renterting through HIS

30
Q

LBBB 12 ECG morphology

A

negative R wave in Lead V

31
Q

RBB 12 ECG

A

Postitive R wave in lead 5

32
Q

impulse travels up the right bundle branch, fast pathway.

A

reverse bundle branch reentry

33
Q

associated with enhanced automaticity or triggered activity (focal arrhythmia)

A

Idiopathic VTs

34
Q

occurs during phase 3 of the action potential

A

early afterdepolarization

35
Q

associated with pause-dependent VT (electrolyte disturbance, Long QT, antiarrhythmic drugs)

A

Early afterdepolarization

36
Q

occurs during phase 4 of the action potential

A

delayed afterdepolarization

37
Q

associated with catechol-dependent VT, triggered by exercise or emotional stress

A

delayed afterdepolarization

38
Q

right ventircular outflow tract, is triggered by exercise or stress

A

RVOT Tachycardia

39
Q

has LBBB morphology with inferior QRS axis.

A

RVOT

40
Q

RVOT is typically induced with

A

ispoproternal

41
Q

RVOT is typically terminated with

A

adenosine

42
Q

originates in LV Septum, has RBBB morphology with left superior QRS Axis

A

Idiopathic LV tachyacardia (ILVT)

43
Q

Idiopathic LV tachycardia
QRS morphology is preceded by distinct His Spike
QRS complex is

A

100-140 ms

44
Q

rare condition - has multiple arrhythmogenic sites and slow conduction zones, LBBB morphology

A

Aarhythmogenic right ventricular dysplasia (ARVD)

45
Q

RV dilation or RV & LV dilation (PVCs may be present)

A

Idiopathic dilated cardiomypathy

46
Q

areas of slow conduction around scar tissue

A

VT after repair of congential defect

EP 101 (6 decks)

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