What is Supraventricular Tachycardia?
Rapid rhythm of the heart that begins in the upper chambers (>100 bpm)
This condition involves an increased heart rate originating from above the ventricles.
Name the classifications of Supraventricular Tachycardia.
- AVNRT
- AVRT using accessory pathway
- Atrial tachycardia
- Atrial fibrillation
- Atrial flutter
These classifications help in identifying the specific type of tachycardia present.
What does AVNRT stand for in the context of Supraventricular Tachycardia?
Atrioventricular nodal reentrant tachycardia
AVNRT is a common type of supraventricular tachycardia.
What does AVRT refer to in Supraventricular Tachycardia?
Atrioventricular reentrant tachycardia
AVRT can occur using an accessory pathway.
Differentiate between orthodromic and antidromic AVRT.
- Orthodromic: conduction down the AV node
- Antidromic: conduction up the AV node
These terms describe the direction of electrical conduction in AVRT.
What is the classification of Long versus Short RP tachycardia based on?
Position of P wave in relation to preceding & following ORS complexes
This classification helps in identifying different types of tachycardia.
List the conditions associated with Long RP tachycardia.
- Atypical AVNRT
- AVRT using a slowly conducting accessory pathway
- Atrial tachycardia
- Atrial flutter
- Sinus tachycardia
Long RP tachycardia includes various atrial and nodal reentrant tachycardias.
List the conditions associated with Short RP tachycardia.
- Typical AVNRT
- AVRT
Short RP tachycardia typically involves reentrant circuits in the atrioventricular node.
Name the specific types of SVT.
- Atrial fibrillation
- Atrial tachycardia
- Atrial flutter
- AVNRT
- AVRT using accessory pathway
These types of SVT include re-entrant mechanisms and enhanced automaticity.
What is the mechanism behind Atrial tachycardia?
Enhanced automaticity
This refers to an increased rate of impulse generation in the atria.
True or false: All types of SVT listed are re-entrant.
TRUE
This includes Atrial fibrillation, Atrial flutter, AVNRT, and AVRT using accessory pathway.
What type of SVT is characterized by multiple theories?
Atrial fibrillation
Atrial fibrillation has various proposed mechanisms for its occurrence.
What does AVNRT stand for?
Atrioventricular nodal re-entrant tachycardia
This is a common type of re-entrant tachycardia involving the AV node.
What does AVRT using an accessory pathway refer to?
Atrioventricular re-entrant tachycardia
This involves an additional conduction pathway that can lead to re-entrant circuits.
What is a common feature of scar VT?
Re-entrant mechanism
Scar VT occurs in areas of myocardial scarring, leading to abnormal conduction.
