Normalisasi EKG pada Pasien dengan Blok Berkas Cabang Kanan yang Dilakukan Pemacuan Ventrikel Kanan

Z Zainuddin (Department of Cardiology and Vascular Medicine, Faculty of Medicine, University of Indonesia/National Cardiovascular Center Harapan Kita, Jakarta)
Yoga Yuniadi (Department of Cardiology and Vascular Medicine, Faculty of Medicine, University of Indonesia/National Cardiovascular Center Harapan Kita, Jakarta)
Hardja Priatna (Department of Cardiology and Vascular Medicine, Faculty of Medicine, University of Indonesia/National Cardiovascular Center Harapan Kita, Jakarta)
Dicky A Hanafi (Department of Cardiology and Vascular Medicine, Faculty of Medicine, University of Indonesia/National Cardiovascular Center Harapan Kita, Jakarta)

Indonesian Journal of Cardiology
Vol. 31, No. 3 September - Desember 2010

Right ventricle apex (RVA) pacing bypasses the His-Purkinje system result-ing in left bundle branch block like pattern on surface EKG. In preexisting right bundle branch block (RBBB), pacing from certain location of RV might change the EKG pattern. We present two cases of normalization of QRS complex upon RV septal pacing in preexisting RBBB patients. The postulated mechanisms of the phenomenon is also proposed.