This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Gynaecology & Obstetrics
Best gas used for creating pneumoperitonium at laparoscopy is : 
Select and explain. 
A. N2, B. 2, C. CO2, D. N20 Goniometer is used
C: CO2
Answer: C: CO2 
Explanation: CO2 CO, is the gas used to create pneumoperitoneum during laparoscopy. Other option is - N20 : But it is expensive, less soluble in blood and suppos combustion. Also know : Instrument used for creating pneumoperitoneum is veress needle. Flow Rate of CO, for creating pneumoperitoneum 200 - 2000 ml/min & pressure between 15 - 25 mm of Hg.