arrhythmias

Question 1

what is an abnormal rhythm

Answer 1

too slow 100

Question 2

2 types of pathological tachy

Answer 2

1. supreventricular (SVT) - narrow QRS

2. ventricular - wide QRS

Question 3

3 main types of SVT

Answer 3

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

Question 4

3 main types of PSVT

Answer 4

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

Question 5

what happens in AVNRT

Answer 5

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

Question 6

what is seen on ECG in AVNRT

Answer 6

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

Question 7

what is WPW

Answer 7

pre-exitation and tachycardias

• accessory pathway in myocardium
• cell to cell conduction with no break through the AV node

Question 8

what is WPW ECG

Answer 8

• wide QRS

- slurred QRS upstroke

Question 9

what is AVRT

Answer 9

atrium is activated after the entire vent. has been activated

Question 10

what is seen in ECG in AVRT

Answer 10

1. P -wave comes after QRS

2. PR interval is longer than “RP” interval

Question 11

risk in WPW

Answer 11

sudden death - no high risk jobs

Question 12

what is Tx of AV reentrant SVT (3)

Answer 12

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

Question 13

what is atrial tachy

Answer 13

from anywhere in atrium

- association with structural heart disease

Question 14

what is ECG for a. tachy

Answer 14

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