atrial standstill
a·tri·al stand·'still
atrial standstill
A transient or permanent electrical atrial failure—and non-contractility of atria—which is seen in patients with familial amyloidosis and facioscapulohumeral dystrophy, possibly due to perineural infiltration.EKG
Absent P waves.
JVP
Absent A waves.
Molecular pathology
Congenital atrial standstill is linked to a mutation of SCN5A, which encodes a voltage-gated sodium channel.