Ultrasonic devices operate with frequencies from 20 kHz up to several gigahertz. Ultrasound is used in many different fields. Ultrasonic devices are used to detect objects and measure distances.
The aim of the study was to evaluate the hearing status of operators of low-frequency ultrasonic devices compared to employees exposed to audible noise at a similar A-weighted sound pressure level (SPL) but without ultrasonic components.

Therefore, it is important to determine the effect of ultrasonic noise (1040 kHz) on the human body in the working environment. This review describes hearing and nonhearing effects (thermal effects, subjective symptoms and functional changes) of the exposure to noise emitted by ultrasound devices.

to use ultrasonic energy, in favour of electrosurgery. The aim of this review is to analyse available evidence related to the surgical smoke created by ultrasonic devices as it relates to the risk of COVID-19 transmission during laparoscopic surgery.
