SOLUTIONS GRADED A+
◉ Type of light source typically used. Answer: 300 Watt Xenon lamp
◉ How to check for damage of the fiber optic light cable. Answer:
holding one end up to light and other end up to eye and look to see black
dots
◉ Troubleshooting: 2 causes of small operating field despite measured
pressure same or higher than set pressure (eg 15 mmHg). Answer: 1. pt
may not be sufficiently relaxed or 2.
there is mechanical obstruction of insufflation system
◉ How electrical frequency changes from the wall to the
monopolar/bipolar after it goes through the ESU?. Answer: low
frequency current from wall to high frequency
◉ As tissue temp raised past ***C protein denaturation occurs.. Answer:
60C
, ◉ Superficial eschar formation with minimal depth of necrosis = this
term. Answer: fulguration
◉ Which ESU mode is this: heat quickly so water converts to steam —>
cell explodes ; heat is dissipated in
steam with minimal lateral thermal damage but poor coagulation..
Answer: cut
◉ Which ESU mode is this: Rapid surface heating. Intermittent wave
form present with high voltage.. Answer: coag
◉ This occurs when current follows path of least resistance through
unintentional pathways.. Answer: current diversion
◉ Bipolar tissue sealing devices can seal up to ***mm diameter vessels.
Answer: 7mm
◉ Type of technology described: high frequency vibration using
piezoelectric transducer. Answer: ultrasonic coagulation
◉ How inadvertent tissue injury can occur with use of an ultrasonic
coagulation instrument. Answer: outside of active (vibrating) blade is
unprotected and can inadvertently injure tissue that comes into contact
with it during / immediately after use.