the value of a transcardiac lead system ( coronary sinus to right ventricular apex ) to record atrial and ventricular electrical activity and its pacing capabilities was assessed in 20 patients with a variety of tachycardias ( atrial tachycardia in 3 patients , atrial flutter in 4 , intranodal tachycardia in 6 , circus movement tachycardia using an accessory pathway in 1 patient , and ventricular tachycardia in 9 ) .
C0039231
tachycardia
C0042514
ventricular tachycardia