sinus arrest

arrest /ar·rest/ (ah-rest´) cessation or stoppage, as of a function or a disease process.

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cardiac arrest  sudden cessation of the pumping function of the heart with disappearance of arterial blood pressure, connoting either ventricular fibrillation or ventricular standstill.

developmental arrest  a temporary or permanent cessation of development.

epiphyseal arrest  premature interruption of longitudinal growth of bone by fusion of the epiphysis and diaphysis.

maturation arrest  interruption of the process of development, as of blood cells, before the final stage is reached.

sinus arrest  a pause in the normal cardiac rhythm due to a momentary failure of the sinus node to initiate an impulse, lasting for an interval that is not an exact multiple of the normal cardiac cycle.

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sinus arrest

n.

A pause or cessation of cardiac sinus pacemaker activity.

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sinus arrest,

a heart disorder in which there is a cessation of activity in the sinus node. The ventricles may continue to contract under the control of pacemakers in the atrioventricular node or the ventricles. Also called sinus standstill.

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sinus arrest

Sinus pause Cardiology A form of sinus-node dysfunction–sick sinus syndrome characterized by a normal P-wave axis EKG Every P wave is followed QRS complexes and accompanied by pauses of > 3 sec without atrial activity. See Sick sinus syndrome.