and Answers | A+ Score Assured
warfarin discontinue time - 🧠 ANSWER ✔✔3 days
Laproscopic instruments diameter and length ranges - 🧠 ANSWER ✔✔2-
10mm, 30-45cm
hopkins rod lens - 🧠 ANSWER ✔✔light has to travel back through the rod to
capture the image.
decreasing light in the camera for... - 🧠 ANSWER ✔✔decreasing diameter,
increasing scope angle (ie 5mm and 30 degree has less light than 10mm 0
degree)
,When is zero degree scope most useful - 🧠 ANSWER ✔✔when working in
a small area directly in line with the scope and ports, like the pelvis
how to check fiber optics light connection - 🧠 ANSWER ✔✔black dots=
broken fibers
why does it fog up? - 🧠 ANSWER ✔✔temperature and humidity
discrepancy between the OR and body
tools for defogging - 🧠 ANSWER ✔✔- FRED antifog (must dry before
putting back in)
- put laparoscope in hot water
methods to clean a smudged lens - 🧠 ANSWER ✔✔- gently wipe on clean
tissue (liver, uterus, bowel)
- remove scope and clean with hot water and gauze
Insufflation gas type and reasoning - 🧠 ANSWER ✔✔CO2- readily
available, inexpensive, non combustable, warmed and humidified better
other gasses used in laparoscopy - 🧠 ANSWER ✔✔-nitrous oxide
-helium (inert substance)
,why is the CO2 warmed and humidified for laparoscopy? - 🧠 ANSWER
✔✔statistically significant decreases in body temp and post-op pain
(not significant with surgery lasting <90 mins)
high flow insufflation - 🧠 ANSWER ✔✔10 or more L per minute
preventing loss of pneumo with suctioning - 🧠 ANSWER ✔✔keep suction
tip below the fluid level
components of the video tower - 🧠 ANSWER ✔✔-light source
-camera control unit
-video monitor
-insufflator
most common light source - 🧠 ANSWER ✔✔300W xenon lamp
troubleshooting steps: gas preOP - 🧠 ANSWER ✔✔1. check that co2 tank
is full (gauge may read 'empty' if connected to central CO2 supply)
2. check co2 tank gasket is secured (need a wrench, spare gasket)
3. check that spare co2 tank is available in the OR
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, troubleshooting steps: image - 🧠 ANSWER ✔✔1. check that the monitor is
plugged in and turned on
2. check that all cables are connected correctly and securely
troubleshooting steps: view of operative field is reduced in size - 🧠
ANSWER ✔✔immediately check the insufflator control panel to determine
cause
troubleshooting steps: loss of working space: insufflator settings:
-measured pressure is the same or higher than the preset pressure
flow rate = 0 - 🧠 ANSWER ✔✔1. the patient may not be adequately relaxed
or there is a mechanical block of gas flow
2. inspect abdomen for rhythmic muscle contraction and palpate the
abdomen for firmness
3. check port valves to make sure they are open
4. check for kinks in tubing and make sure no one is standing on them
troubleshooting steps: loss of working space: insufflator settings:
-low pressure and high flow rate