Atrial conduction disturbance as an indicator of rejection after cardiac transplantation.
BACKGROUND
Abnormalities of the terminal force of the P wave in Lead V1 (ptf-V1) and dispersion of corrected atrial repolarization (Ta-TcD) are believed to represent interatrial conduction defect.


RESULTS
To determine whether atrial conduction disturbance correlates with cardiac allograft rejection, we analyzed 249 twelve-lead-electrocardiograms, echocardiograms, hemodynamic parameters, and endomyocardial biopsys from 137 patients with heart transplantation. Both ptf-V1 and Ta-TcD were significantly increased in patients with severe, moderate, and mild rejection. In 22 patients, significant increases of the ptf-V1 and Ta-TcD were observed before positive histological findings, and significantly correlated with severity of rejection during 5- week to 1-year follow-up. Increase of 0.030 mm x sec in ptf-V1 or 0.040 s1/2 in Ta-TcD indicated cardiac rejection > or =1B with sensitivity of 88 and 83%, specificity of 85 and 77%, respectively.


CONCLUSIONS
These results suggest that the ptf-V1 and Ta-TcD might be an adjunct to detect rejection and reduce the number of surveillance EMB.
Department of Medicine, UCLA Medical Center, UCLA School of Medicine, Los Angeles, CA 90095-1679, USA.
G
G
Cui
J
J
Kobashigawa
T
T
Chung
L
L
Sen
D016275:Atrial Function; D004562:Electrocardiography; D006084:Graft Rejection; D006329:Heart Conduction System / Q000503:physiopathology*; D016027:Heart Transplantation / Q000009:adverse effects*; D006801:Humans; D014184:Transplantation, Homologous