23.IR and IE/24.Lap and thoracoscopy Flashcards
What is the maximum insuflation of the abdomen with CO2
a. 10 mmhg
b. 12 mmhg
c. 15 mmhg
d. 17 mmhg
c 15 (but 10-12 is generally recommended)
8-10 mm Hg generally enough working space
14 cm H20 per the anesthesia for procedures chapter
What is false about Veress needles?
A) It contains a spring loaded trochar.
B) It is used to create a pneumothorax
C) It is used to create a pneumoperitoneum
D) It can be used to directly penetrate the abdomen without any incisions.
D false
Which of the following is true regarding abdominal access?
A The modified Hasson technique involves the use of a veress needle with a hanging drop
B Improper placement of a needle into the subcutaneous space will not result in SQ emphysema
C Initial intraabdominal pressure >6mmHg and low CO2 flow indicates malpositioning, likely in the SQ
D Falciform fat visualization is not a confirmatory mechanism of being within the abdomen
C is correct
A (false, blunt trochar with Hasson)
True or false: insufflation is not necessary for thoracoscopy
(TRUE)
What are the most common port sizes for laparoscopy? A. 5 and 10mm B. 4 and 12mm C. 5 and 12 mm D. 4 and 10mm
5 and 12mm
Which of the following statements is true?
A Drainage catheters are only available in non-locking loop conformations
B Guiding catheters are named for their inner diameter.
C Low pressure occlusion balloons are filled with contrast and used to dilate and efface strictures
D Locking loop or Cope loop catheters are preferred because of suture locking mechanism to secure the loop
D is true
A (also locking loop)
B(OUTER)
C (HIGH pressure)
Which of the following materials is reconstrainable?
a. Woven stents
b. Laser cut stents
c. Permanent metallic embolics
d. Polyvinyl alcohol embolic
c designed to fit anatomy
few exceptions with the Laser cut
mesh self-expanding also reconstrainable
what is the preferred light source for -scopy?
Xenon
Which of the following is NOT a feature of using CO2 for insufflation?
a. Rapidly excreted from circulation
b. Low solubility means there is a risk of gas emboli
c. Detrimental effects on cellular, hormonal and immunologic function
d. cheap and odorless
B. Highly soluble = low risk
true/false: Woven or braided stents are reconstrainable
false
Mesh self-expanding are
woven and laser cut are NOT reconstrainable
T/F
The Ho:YAG laser is used for extracorporeal lithotripsy
False
INTRAcorporeal - stone fragmentation and retrieval
can also be used for cutting and coagulation
t/f: Iohexal is a Low-osmolarity, nonionic, iodinated contrast media
true
True/false: Polyvinyl alcohol and NBCA are types of liquid embolics
False: polyvinyl alcohol comes in amorphous, granular or spherical forms (permanent particulate). Glue = NBCA = liquid
T/F concerning MIS?
Bipolar electrocautery should be used with great caution compared to monopolar, as several potentially hazardous problems can occur.
False caution with monopolar
• (Bipolar) electrosurgery is safer because it is usually of lower voltage current and energy passed between the tips
T/F: A defect in the insulation of the bipolar instrument shaft can result in the passage of current to tissues that are not in the visual field, leading to iatrogenic injury.
False:(monopolar)