DM DOC 040 Rev 1.0
Results on type B statements. Data were obtained from the Glasgow 1000 ECG
database from which 73 children’s ECGs were removed in order to provide results on
adults only. In addition, 31 WPW examples were obtained from a group of 31 patients
being investigated by electrophysiological testing. There were therefore 927+31 (958)
ECGs available for assessment of type B statements in adults.
TYPE B STATEMENTS – CONDUCTION DEFECTS
CONDUCTION
DEFECT
SENS
SPEC
PPV
NPV
PREVALENCE
RBBB
96%
99.9%
96%
99.9%
24/958
LBBB
100%
100%
100%
100%
16/958
RBBB with LAFB
100%
100%
100%
100%
9/958
Incomplete
RBBB / rSr’ V1
100%
99.9%
95.6%
100%
22/958
IVCD
100%
99.7%
82.4%
100%
14/958
WPW
88%
100%
100%
99.6%
33/958
(Possible) LAFB
100%
100%
100%
100%
15/958
RBBB = Right bundle branch block
LBBB = Left bundle branch block
LAFB = Left anterior fascicular block
IVCD = Intra ventricular conduction defect
WPW = Wolf Parkinson White
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