[32] Introduction to Arrythmias Flashcards
Dominant Pacemaker of the Heart
Sinoatrial Node
When is automaticity not normal?
When a lower pacemaker takes over or when a non-pacemaker cell transforms into a pacemaker cell
Do non-pacemaker cells have a fast type or action potential or a slow one?
Fast Type
[Slow Type vs. Fast Type]
Difference of Channels
Fast Type: Sodium Channels
Slow Type: Calcium Channels
Main change to turn a non-pacemaker cell into a pacemaker one
Change in the pervading resting membrane potential
Differentiate Focal vs. Re-entrant Arrythmia
Focal: Arrhythmia from a single spot
Re-entrant: Short circuiting
Atrial Tachycardia can be defined when ECG shows?
3 Premature Atrial Complexes together
Interpret
Sinus Bradycardia
Interpret
Sinus Tachycardia
Long QT Syndrome is also called?
How can you tell if the QT is long?
Torsade de Pointes
If it’s greater than half of the R interval
Can you give Amiodarone in Torsade de Pointes
This is the only KCB that is contraindicated for it, because it causes QT Elongation
“Scooped Out” ST Segment is indicative of what Drug?
Chronic Digitalis Therapy
Why do you need slow conduction for re-entry to happen?
Time for recovery
If you want to unmask flutter waves what do you give?
Adenosine
Wolff-Parkinson-White
Widened QRS
Presence of Delta Waves
