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At least 271 records · Page 15Linked to original sources
PubMed2006

Facilitating benefit, minimising risk: Responsibilities of the surgical practitioner during electrosurgery.

This article will explore the role of the surgical practitioner in providing best care for the patient, by discussing electrosurgical intervention (ESI). It will exemplify the technological aspect of the role. Management of ESI equipment, and its inherent risks, will be shown to relate directly to the practitioner's role. Some safety claims for ESI equipment will be analysed, demonstrating the need for a theatre practitioner to establish the validity of sources that inform practice. The roles of circulating practitioner and scrubbed practitioner will be elucidated, with exploration of professional and ethical responsibilities to the patient, themselves and colleagues.

Burns, Electric↗
PubMed2006

Electrosurgery and bipolar technology.

A major concern in surgery is the prevention or control of bleeding. The ligature and the clip are the hallmarks of the last century of modern surgery. Therapeutic embolization is not really used to stop hemorrhage but to treat aneurysms and so prevent future rupture and bleeding. Blood clotting within the network of coils of the now widely used Guglielmi detachable coils is now progressively becoming the method of choice whenever possible in aneurysm treatment. Simple external compression at a pressure higher than the intravascular pressure can control bleeding, and if continued long enough, may cause clotting in the bleeding vessels. Unfortunately, there are few areas in the central nervous system where such pressure can be applied, although it is a considerable help in opening muscle layers where self-retaining retractors will be used. Low-pressure venous bleeding may be controlled by application of gelfoam, surgically, or a bit of crushed muscle supported temporarily by a wet cottonoid pledget without occlusion of the venous channel. Historically, hot actual cautery or boiling oil were used to achieve hemostasis by forming a large tissue coagulum, which usually prevented bleeding until the entire dead mass sloughed away.

Brain Diseases↗
PubMed2002

Numerical field calculation of patient return electrodes in electrosurgery.

In order to examine the warming up characteristics during application of a new electrode design for a patient return electrode of an electrosurgical system numerical field calculations were performed in this study. A multi-layer thigh model was provided for this purpose, to which the patient return electrode and the active electrode were connected. The simulation geometry as well as the dielectric tissue parameters were set according to the current frequency. The heating up at the skin surface by the flowing current was evaluated. The results were compared with experimental thermographical measurements.

Computer Simulation↗
PubMedDate not supplied

Technical note: electrosurgery active lead failures.

A cause of electrosurgical burns in surgical procedures is faulty active leads. A survey of faults and modes of failures are reported. The design of a meter is given for use by a sterilizing department to enable leads to be checked. Using the criterion of two times the original resistance, 35 cables were found to be defective out of a population of about 200 cables. About half of these cables transmitted radio frequency (RF) power inefficiently: often power was intermittent and hot spots would develop. The commonest mode of failure was a break between the socket and the wire at the forceps end. Rejection criteria are reviewed and we suggest a resistance less than 0.3 omega.

Electric Conductivity↗
PubMed1982

Electrosurgery.

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Directories as Topic↗