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FLS Written Questions with Detailed
Verified Answers
Question: Laparoscope diameters
Answer: 2-10 mm
Question:
Laparoscope lengths
Answer: 30-45 cm
Question:
Hopkins Rod lens system
Answer: light from source to operative field >> capture and transmit reflected
light through the scope and camera couple >> light sensitive chip in the
camera head
Question:
Decreasing ability for image capture with what factors?
Answer: increasing length, increasing angle, and decreasing diameter (ex: 5
mm, 30 degree scope admits less light than a 10 mm, 0 degree scope)
Question:
Laparoscopic damage susceptibility increases with which factors?
Answer: decreasing diameter, increasing length
Question:
0 degree laparocope most useful?
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Answer: when structures most in line with the trocars and in small places
(deep pelvis, high mediastinum)
Question:
30- and 45-degree laparocope
Answer: offer more flexibility/versatility than 0 degree (but need more skills)
Question:
Troubleshooting smudge on laparoscope?
Answer: o Wipe on clean tissue (liver or bowel)
o Remove scope and clean with towel
o Clean port (newer systems may not need this as no mechanical seal)
Question:
Warmed/humidified CO2
Answer: decreases postop pain and temperature (compared to gas directly
from cylinder)
but is not clinically significant in cases < 90min
Question:
High powered light source wattage?
Answer: 300 watt Xenon lamp
Question:
"Picture in Picture" feature
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Answer: · Helpful if need for intra-op of flexible endoscopy or ultrasound of GI
or GU tract, liver ultrasound, hysteroscopy, bile duct exploration
o Basically smaller picture in corner to show scope imaging + additional
images
Question:
· Work space decrease in size: Actual pressure higher than set pressure =
Answer: o Patient may not be sufficiently relaxed or there is obstruction
o Twitch monitors may not represent this well as diaphragm recovery from
paralytics differs from skeletal muscles
o Mechanical obstruction - closed valve on port, kink, standing on tubing
Question:
Low pressure and high flow rate =
Answer: = leak in system
o tubing disconnected from insufflator or port
o Valve open—check to make sure valves are cloed
o Check all port sites for leaking CO2
o Hollow organs check distension of bowel or bladder catheter
Question:
Waveforms
Answer: coag, cut, blend
Question:
· Tissue effects:
FLS Written Questions with Detailed
Verified Answers
Question: Laparoscope diameters
Answer: 2-10 mm
Question:
Laparoscope lengths
Answer: 30-45 cm
Question:
Hopkins Rod lens system
Answer: light from source to operative field >> capture and transmit reflected
light through the scope and camera couple >> light sensitive chip in the
camera head
Question:
Decreasing ability for image capture with what factors?
Answer: increasing length, increasing angle, and decreasing diameter (ex: 5
mm, 30 degree scope admits less light than a 10 mm, 0 degree scope)
Question:
Laparoscopic damage susceptibility increases with which factors?
Answer: decreasing diameter, increasing length
Question:
0 degree laparocope most useful?
, Page | 2
Answer: when structures most in line with the trocars and in small places
(deep pelvis, high mediastinum)
Question:
30- and 45-degree laparocope
Answer: offer more flexibility/versatility than 0 degree (but need more skills)
Question:
Troubleshooting smudge on laparoscope?
Answer: o Wipe on clean tissue (liver or bowel)
o Remove scope and clean with towel
o Clean port (newer systems may not need this as no mechanical seal)
Question:
Warmed/humidified CO2
Answer: decreases postop pain and temperature (compared to gas directly
from cylinder)
but is not clinically significant in cases < 90min
Question:
High powered light source wattage?
Answer: 300 watt Xenon lamp
Question:
"Picture in Picture" feature
, Page | 3
Answer: · Helpful if need for intra-op of flexible endoscopy or ultrasound of GI
or GU tract, liver ultrasound, hysteroscopy, bile duct exploration
o Basically smaller picture in corner to show scope imaging + additional
images
Question:
· Work space decrease in size: Actual pressure higher than set pressure =
Answer: o Patient may not be sufficiently relaxed or there is obstruction
o Twitch monitors may not represent this well as diaphragm recovery from
paralytics differs from skeletal muscles
o Mechanical obstruction - closed valve on port, kink, standing on tubing
Question:
Low pressure and high flow rate =
Answer: = leak in system
o tubing disconnected from insufflator or port
o Valve open—check to make sure valves are cloed
o Check all port sites for leaking CO2
o Hollow organs check distension of bowel or bladder catheter
Question:
Waveforms
Answer: coag, cut, blend
Question:
· Tissue effects:
