(redirected from Esus)
Also found in: Dictionary, Acronyms, Encyclopedia, Wikipedia.
Related to Esus: ESOS, ASUS


Abbreviation for electrostatic unit.
Farlex Partner Medical Dictionary © Farlex 2012

electrosurgical unit



A device used to cut and coagulate tissues during surgery, using alternating current that changes direction at a frequency of between 500,000 and 3,000,000 hertz. An ESU is an alternative to other cutting tools, such as surgical blades or lasers.
Medical Dictionary, © 2009 Farlex and Partners
References in periodicals archive ?
Embolic strokes of undetermined source: Prevalence and patient features inthe ESUS Global Registry.
Bipolar instruments also are connected to the ESU but have both electrodes integrated into their design; in some instances, one of the electrodes is designed to be "dispersive" and not create a tissue effect, while in others, such as grasping forceps, both electrodes are "active" because they focus the current, thereby contributing to the impact on tissue.
thous are necessary to determine the taxonomic status of the subspecies and, with that information, define and delimit the ESUs, because at present genetic data from populations of northern Amazonia of C.
An overestimation of uncertainty had resulted from failing to apply single [NASC.sub.CF] values that ranged between 0 and 1.5 among ESUs. An overall under-estimation of total abundance and biomass estimates had also been produced by the joint omission of these [NASC.sub.CF] values, which exhibited an overall mean of 0.12 (12%).
"Updated Status of Federally Listed ESUs of West Coast Salmon and Steelhead." U.S.
(125.) Endangered and Threatened Species; Proposed Rule Governing Take of Four Threatened Evolutionarily Significant Units (ESUs) of West Coast Salmonids: California Central Valley Spring-run Chinook; California Coastal Chinook; Northern California Steelhead; Central California Coast Coho, 66 Fed.
(8) In these obscure beginnings, Hugo marks transitions from a vegetal and atmospheric shell to a mineral and architectural shell for the burgeoning city: "Tibere a, pour ainsi dire, pose la premiere pierre de Notre-Dame; c'est lui qui avait trouve cette place bonne pour un temple, et qui y avait erige un autel au dieu Cerennos et au taureau Esus" (15).
In 1991, NMFS issued a policy declaring that it would consider for listing only "evolutionary significant units" ("ESUs") of salmon species.
Morphological and genetic evidence for two evolutionarily significant units (ESUs) in the South American fur seal, Arctocephalus australis.