TY - JOUR
T1 - Premature ventricular contractions with a right bundle branch block and inferior QRS axis morphology
T2 - Where is the site of the origin?
AU - Yamada, Takumi
AU - Huizar, Jose F.
AU - McElderry, Hugh T.
AU - Kay, G. Neal
PY - 2007/8
Y1 - 2007/8
N2 - A 63-year-old woman with symptomatic premature ventricular contractions (PVCs) underwent electrophysiologic testing. The PVCs were suggested to originate from the infra-aortic valvular left ventricular outflow tract because the PVCs had S-waves in leads I, V5, and V6, and an R/S ratio >1 in lead V1. However, during some PVCs without S-waves, the ST segment had negative retrograde P-waves with a longer ventricularatrial (VA) interval. A Radiofrequency (RF) application in the left coronary cusp completely eliminated the PVCs, suggesting that negative retrograde P-waves might have been observed as pseudo S-waves during the PVCs.
AB - A 63-year-old woman with symptomatic premature ventricular contractions (PVCs) underwent electrophysiologic testing. The PVCs were suggested to originate from the infra-aortic valvular left ventricular outflow tract because the PVCs had S-waves in leads I, V5, and V6, and an R/S ratio >1 in lead V1. However, during some PVCs without S-waves, the ST segment had negative retrograde P-waves with a longer ventricularatrial (VA) interval. A Radiofrequency (RF) application in the left coronary cusp completely eliminated the PVCs, suggesting that negative retrograde P-waves might have been observed as pseudo S-waves during the PVCs.
KW - Coronary cusp
KW - Left ventricular outflow tract
KW - Premature ventricular contraction
KW - Radiofrequency catheter ablation
UR - http://www.scopus.com/inward/record.url?scp=34547601394&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=34547601394&partnerID=8YFLogxK
U2 - 10.1111/j.1540-8159.2007.00800.x
DO - 10.1111/j.1540-8159.2007.00800.x
M3 - Article
C2 - 17669085
AN - SCOPUS:34547601394
SN - 0147-8389
VL - 30
SP - 1009
EP - 1011
JO - PACE - Pacing and Clinical Electrophysiology
JF - PACE - Pacing and Clinical Electrophysiology
IS - 8
ER -
