ESU

Question 1

What do electrical surgical devices do?

Answer 1

sever tissue, stop bleeding, uses a radio frequency in the range of 300khz to 3MHz, provide a wide range of power for cutting, desiccating, and fulgurating tissues during the surgical procedure

Question 2

Crest Factor

Answer 2

the ratio of peak to effective (RMS) voltage or current which is used as an indicator of an ESUs ability to coagulate tissue

Question 3

Hemostasis

Answer 3

process which causes bleeding to stop

Question 4

hemostasis effect

Answer 4

termination of bleeding by means of complex coagulation

Question 5

Monopolar ESU

Answer 5

incorporates cut and coagulation modes of operation, electrosurgical effect takes place at the active electrode only, return electrode: patient plate, reference electrode, dispersive electrode

Question 6

Bipolar ESU

Answer 6

forceps or other electrosurgical accessories having two electrodes in one instrument, both sides of generator are connected to a surgical instrument, allows for better current control, current passes through the two poles of a forceps rather than through the entire body

Question 7

Argon Plasma and Beam Coagulation ESU

Answer 7

when combined with monopolar electrosurgical units can be used to rapidly create hemostasis or to treat lesions, gas flow clears blood, other fluids, and debris from the surgical site, enhancing surgeon’s view, provides enhanced coagulation over standard coagulation

Question 8

Coagulation mode

Answer 8

used to control or stop bleeding by increasing the crest factor, higher or increased crest factor, low power technique, can also be used to for destroying undesirable tissue masses

Question 9

Cut Mode

Answer 9

Associated with a low crest factor, heats tissue so rapidly that cells explode and contents vaporize leaving an incision

Question 10

Blend Mode

Answer 10

hybrid of cut and coagulation, used when surgeon requires more hemostasis effect than cut provides, saves time as only one pass with electrode is necessary

Question 11

Spray (Fulguration)

Answer 11

used for rapid control of bleeding across a wide area, non contract type of coagulation, current sparks or jumps for active electrode to the tissue, Uses: to destroy surface layers of cells in the area from which a lesion has been removed

Question 12

Low Power Setting ( when used)

Answer 12

Neurosurgery, Oral

Question 13

Medium Power Setting

Answer 13

General Surgery, abdominal opening,

Question 14

High Power

Answer 14

Opening the chest, Masectomy

Question 15

Argon

Answer 15

a non-flammable gas used to create thermal energy