Laparoscopic surgery Flashcards
what needle is used for closed technique?
Verres
what trocar is used for open technique?
Hasson
For closed technique intra-abdominal pressure of how many mmHg or less is a reliable indicator of correct needle placement?
10 mmHg or less
what is one test that can be performed to confirm correct placement for closed technique? (SDT)
saline drop test
many complications with laparoscopic surgery are seen at what 2 times? (IE, PE)
initial entry and pneumoperitoneum establishment
Pneumoperitoneum causes what 3 hemodynamic measurements to increase?
HR, MAP, SVR
In what 2 ways does the pneumoperitoneum cause the increase of HR, MAP and SVR? (IAVC, NHR)
- intraabdominal vessels compression
2. neuroendocrine hormones released (vasopressin and renin)
Pneumoperitoneum causes what 2 hormones to be released?
Vasopressin, renin
steep trendelenburg increases or decreases CVP?
increases
Does pneumoperitoneum increase or decrease stroke volume?
decreases stroke volume
What does pneumoperitoneum decrease and thus decreases stroke volume?
venous return
Does pneumoperitoneum prolong or shorten the QT dispersion?
prolong
Pneumoperitoneum CO2 is absorbed through what? (PS)
peritoneal serosa
misplaced trocar and insufflation can result in development of what? (SE)
subcutaneous emphysema
pneumoperitoneum causes the diaphragm to displace cephalad causes what 3 pulmonary measurements to decrease?
- pulmonary compliance
- vital capacity
- functional residual capacity
max PCO2 increases how many minutes after insufflation begins?
40 minutes
during robotic prostatectomy in steep trendelenburg, pulm compliance decrease what % and peak inspiratory pressure increases what %?
decreases 50%, increases 50%