Influenced by ventricular contraction; applied to the atrial rhythm when this is modified by ventricular contraction; in ventriculophasic sinus arrhythmia in complete AV block the sinus impulse immediately following a ventricular contraction usually appears sooner than expected.
References in periodicals archive ?
DIAGNOSIS: Sinus rhythm at a rate of 79 beats/minute with 2:1 second degree atrioventricular (AV) block and ventriculophasic sinus arrhythmia.
1) Ventriculophasic sinus arrhythmia may occur with various forms of AV block, but is most typically seen with 2:1 AV block.
Heart rate turbulence (HRT) expresses ventriculophasic sinus arrhythmia and has been considered to reflect cardiac autonomic activity.
DIAGNOSIS: Sinus rhythm with monomorphic ventricular bigeminy and ventriculophasic sinus arrhythmia.
This ventriculophasic sinus arrhythmia often is most clearly seen in electrocardiograms showing sinus rhythm with 2:1 atrioventricular block but may be seen in any situation in which some sinus P-P intervals contain QRS complexes, while others do not.