nonreset nodus sinuatrialis

non·re·set no·dus si·nu·a·tri·a·lis

(non'rē'set nō'dŭs sī'nū-ā'trē-ā'lis),
Nonreset of the sinoatrial node produced by a premature atrial depolarization when the sum of the duration of the premature cycle and the return cycle is fully compensatory, that is, twice the duration of the spontaneous cycle length. Compare: reset nodus sinuatrialis.