asequence

a·se·quence

(ă-sē'kwens), Lack of normal sequence, specifically, between atrial and ventricular contractions.

asequence

An obsolete term for a loss of a normal sequence of events—i.e., dyssynchrony, arrhythmia. When used in the context of an atrioventricular loss of sequence, the equivalnet terms are atrioventricular dissociation or atrioventricular block.