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left posterior hemiblock (LPHB)
Special laboratory:
- electrocardiogram
a) normal QRS duration
b) right axis deviation (>120 degrees)
c) small R & deep S in I & aVL
d) small Q in II, III & aVF
e) increased QRS voltage in limb leads
General
left bundle branch hemiblock
Figures/Diagrams
EKG: right bundle branch block, left posterior hemiblock
References
Current Pocket Reference 1992 Pharmacopoeia & Medical
Notes, Shepherd/Whalen, Specialty Cards, Norman OK 1997