PAP VT
PM PAP VT: RBBB/ RSA>LSA
Local activation was 26-31 ms pre-QRS
Absence of PP in all patients

-Irrigated or 8 mm catheter is required

AL PAP VT: RBBB/RIA

For Anterolateral region
R/S < 1 in V6 in the anterolateral region could be a reliable predictor for differentiating AL PAP VT from
LAF VT

For Posteromedial region
QRS duration > 160 ms in LV posteroseptal region could be the predictor for differentiating PM PAP
VT from LPF VT

Which of the following characteristics is most likely to be found in patients with idiopathic ventricular
arrhythmia originating from papillary muscle?
A. Multiple exits


2
The potential reasons of high recurrence rate for catheter ablation in patients with idiopathic
ventricular arrhythmia originating from papillary muscle are:
A. Multiple preferential exits with complex anatomy.


3
Which of the following is true about idiopathic ventricular tachycardia originating from papillary
muscle?
The morphology of fascicular ventricular tachycardia closely resembles the morphology of ventricular
arrhythmia originating from papillary muscle.


4
Which of the following are the electrophysiological characteristics of ventricular arrhythmia originating
from papillary muscle?
A fractionated potential before local ventricular activation during VPC but not sinus beat (papillary
pre-potential) could be detected in some case.

5
Which of the following is true about mapping for ventricular arrhythmia originating from papillary
muscle?
Its morphology may alter after catheter ablation due to exit change.