arrhythmias Flashcards Preview

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Flashcards in arrhythmias Deck (14):
1

what is an abnormal rhythm

too slow 100

2

2 types of pathological tachy

1. supreventricular (SVT) - narrow QRS
2. ventricular - wide QRS

3

3 main types of SVT

1. a fib
2. a. flutter
3. PSVT

4

3 main types of PSVT

1. AVNRT - AV nodal rentrant tachycardia
2. AVNT - atrioventricular reciprocating tachycardia
3. atrial tachy

5

what happens in AVNRT

1. have 2 paths, one is slow
2. one path comes around while other is still depolarized
3. fire an extra beat through

6

what is seen on ECG in AVNRT

typical P in R morphology (P-wave and QRS occur simultaneouslty)

7

what is WPW

pre-exitation and tachycardias
- accessory pathway in myocardium
- cell to cell conduction with no break through the AV node

8

what is WPW ECG

- wide QRS
- slurred QRS upstroke

9

what is AVRT

atrium is activated after the entire vent. has been activated

10

what is seen in ECG in AVRT

1. P -wave comes after QRS
2. PR interval is longer than "RP" interval

11

risk in WPW

sudden death - no high risk jobs

12

what is Tx of AV reentrant SVT (3)

1. tachy termination (AVN blockers)
- adenosine
- B-blockers
- Ca channel blockers
2. TAchy prevention
- AVN blockers
- antiarrhytmics
3. pre-excited tachy
- NOT AVN blockers
- oral.IV anti-arrhymic

13

what is atrial tachy

from anywhere in atrium
- association with structural heart disease

14

what is ECG for a. tachy

if 1:1 AV - relationship of P to QRS is simiolar to that of sinus rythm or tachy: thus PR is shorter the RP

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