pulsáteis

Pulsáteis is the plural of pulsátil in Portuguese, meaning objects or processes that occur in pulses, with periodic rises and falls. The term is used across science and engineering to describe phenomena that are not constant but occur in discrete events or bursts.

In biology and medicine, many processes are pulsatile. For example, the heart produces pulsatile blood flow with each beat; hormones can be secreted in bursts rather than steadily, a pattern important for receptor signaling. The concept of pulsatile secretion explains why hormone rhythms matter in physiology.

In technology and engineering, pulsatile systems produce or respond to pulses. Pulsatile pumps, valves, actuators generate unsteady flows or pressures, used in medical devices (such as pulsatile pumps in assist devices) or industrial processes. In fluid dynamics, pulsatile flow describes a velocity that varies with time, common in arteries.

In pharmacology and drug delivery, pulsatile or pulsatile release systems release drug doses in bursts to target specific pharmacokinetic profiles, aiming to improve efficacy or reduce tolerance.

In imaging and diagnostics, pulsatile signals are used in Doppler ultrasound to measure blood flow, and in other sensors the detection of pulses provides information about the system.

The term derives from Latin pulsus (pulse); in Portuguese, pulsátil means capable of pulsing.