Table 4

Electrophysiology study details by ventricular tachycardia morphology

VariableValues takenLBBB
(n = 68)
RBBB
(n = 58)
P value
CL (ms) [median (LQ-UQ)]220 (210–240)220 (215–250)0.277
Duration of induced VT (s) [median (LQ-UQ)]5 (3–11)5 (3–14)0.752
Total number of inductions129.4%19%0.268
261.8%65.5%
38.8%15.5%
Number of extrastimuli11.4%0.0%0.105
24.4%12.1%
336.8%48.3%
457.4%39.7%
Induction which caused VT173.3%68%0.466
225.0%26.0%
31.7%6.0%
Mode of terminationSpontaneous6.8%12.5%0.373
ATP28.8%35.4%
Shock64.4%52.1%
VariableValues takenLBBB
(n = 68)
RBBB
(n = 58)
P value
CL (ms) [median (LQ-UQ)]220 (210–240)220 (215–250)0.277
Duration of induced VT (s) [median (LQ-UQ)]5 (3–11)5 (3–14)0.752
Total number of inductions129.4%19%0.268
261.8%65.5%
38.8%15.5%
Number of extrastimuli11.4%0.0%0.105
24.4%12.1%
336.8%48.3%
457.4%39.7%
Induction which caused VT173.3%68%0.466
225.0%26.0%
31.7%6.0%
Mode of terminationSpontaneous6.8%12.5%0.373
ATP28.8%35.4%
Shock64.4%52.1%

LBBB, left bundle branch block; RBBB, right bundle branch block; CL, cycle length; LQ, lower quartile; UQ, upper quartile; VT, ventricular tachycardia; ATP, anti-tachycardia pacing.

Table 4

Electrophysiology study details by ventricular tachycardia morphology

VariableValues takenLBBB
(n = 68)
RBBB
(n = 58)
P value
CL (ms) [median (LQ-UQ)]220 (210–240)220 (215–250)0.277
Duration of induced VT (s) [median (LQ-UQ)]5 (3–11)5 (3–14)0.752
Total number of inductions129.4%19%0.268
261.8%65.5%
38.8%15.5%
Number of extrastimuli11.4%0.0%0.105
24.4%12.1%
336.8%48.3%
457.4%39.7%
Induction which caused VT173.3%68%0.466
225.0%26.0%
31.7%6.0%
Mode of terminationSpontaneous6.8%12.5%0.373
ATP28.8%35.4%
Shock64.4%52.1%
VariableValues takenLBBB
(n = 68)
RBBB
(n = 58)
P value
CL (ms) [median (LQ-UQ)]220 (210–240)220 (215–250)0.277
Duration of induced VT (s) [median (LQ-UQ)]5 (3–11)5 (3–14)0.752
Total number of inductions129.4%19%0.268
261.8%65.5%
38.8%15.5%
Number of extrastimuli11.4%0.0%0.105
24.4%12.1%
336.8%48.3%
457.4%39.7%
Induction which caused VT173.3%68%0.466
225.0%26.0%
31.7%6.0%
Mode of terminationSpontaneous6.8%12.5%0.373
ATP28.8%35.4%
Shock64.4%52.1%

LBBB, left bundle branch block; RBBB, right bundle branch block; CL, cycle length; LQ, lower quartile; UQ, upper quartile; VT, ventricular tachycardia; ATP, anti-tachycardia pacing.

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