AFORMED phenomenon

AFORMED phe·nom·e·non

as induced pulsus alternans progresses, a state in which alternating heart depolarizations fail to eject any blood, thus allowing longer diastolic filling; the subsequent beat is then able to produce a significant ejection; at high rates the cardiac minute volume and blood pressure may appear normal.
[Alternating failure of response, mechanical, to electrical depolarization]

AFORMED phe·nom·e·non

(ă-fōr'med fĕ-nom'ĕ-non)
As induced pulsus alternans progresses, a state in which alternating heart depolarizations fail to eject any blood, thus allowing longer diastolic filling; the subsequent beat is then able to produce a significant ejection; at high rates the cardiac minute volume and blood pressure may appear normal.
[Alternating failure of response, mechanical, to electrical depolarization]