FUNDAMENTALS OF LAPAROSCOPIC
SURGERY WRITTEN EXAM 50
QUESTIONS AND ANSWERS WITH
EXPLANATIONS
Which is the most commonly used trocar in laparoscopic surgery?
The Hasson trocar is commonly used to establish the first port
in laparoscopic surgery, particularly in patients with obesity or
those who may be at risk for gas embolism.
What is the most common complication of laparoscopic surgery?
Bowel perforation
Explanation: Bowel perforation is one of the most common
complications during laparoscopic surgery, often occurring during
the insertion of the Veress needle or trocars.
Why is CO2 used for insufflation?
it is non-flammable (?) and can be safely absorbed by the body
,Is CO2 flammable?
CO2 (Carbon Dioxide) is not flammable. It is actually used in
laparoscopic surgery precisely because it is non-flammable and
can safely create the pneumoperitoneum (inflated abdominal
cavity) without posing a fire hazard. In fact, CO2 is used to
displace oxygen in the abdominal cavity, which helps prevent
fires from occurring.
The issue I was referencing with laser energy in the answer about
fire hazards is related to the fact that lasers can ignite fires when
used near flammable gases or materials, but CO2 itself is not
flammable.
Complication of veress needle
bowel injury
gas embolism
What is the most common complication associated with trocar
insertion?
, Bowel perforation
In laparoscopic cholecystectomy, which of the following is a
reliable method to identify the cystic duct during dissection?
The "critical view of safety" technique
Explanation: This technique involves identifying the cystic duct
and cystic artery separately and fully dissecting around them to
minimize the risk of bile duct injury.
During laparoscopic surgery, CO2 insufflation can lead to
increased intra-abdominal pressure.
Which of the following physiologic effects can occur as a result of
increased intra-abdominal pressure?
Decreased venous return and reduced cardiac output
Explanation: High intra-abdominal pressure can compress the
inferior vena cava, reducing venous return to the heart and,
consequently, cardiac output.