Jf. Strasburger et al., ABNORMAL SYSTEMIC VENOUS DOPPLER FLOW PATTERNS IN ATRIAL TACHYCARDIA IN INFANTS, The American journal of cardiology, 80(5), 1997, pp. 640
Congestive heart failure due to atrial tachycardia in the neonate may
be caused in part by altered preload and changes in diastolic flow cha
racteristics. During atrial tachycardia, venous flow reversal is prese
nt. Onset of flow reversal is associated with a ventriculoatrial inter
val. Decreased tricuspid valve inflow mean velocity and time velocity
integral, decreased diastolic duration, and delayed diastolic onset we
re present during tachycardia when compared with sinus rhythm.