duty cycle(redirected from Duty-cycle)
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the percentage of time that ultrasound is being generated (pulse duration) over one pulse period. Also called duty factor, mark:space ratio.
du·ty cy·cle(ti:ttot) (dū'tē sī'kĕl)
The ratio of inspiratory (ti) time to total-breathing-cycle time (ttot).
During chest compressions of a victim of cardiac arrest, the relative amount of time that the chest is compressed compared to the time that the chest is allowed to recoil to its fully inflated position. A cycle of 50% occurs when chest compression equals chest recoil.
See also: cycle