Atrial (? sinus) tachycardia with block (well concealed).
Spodick
David H
DH
Cardiology Division, University of Massachusetts Medical School, Worcester, MA 01655, USA.
D004562:Electrocardiography; D005260:Female; D006327:Heart Block / Q000175:diagnosis*; D006801:Humans; D008875:Middle Aged; D013612:Tachycardia, Ectopic Atrial / Q000175:diagnosis*; D013616:Tachycardia, Sinus / Q000175:diagnosis*