This is a prospective study to collect a nomogram of intra-abdominal volume correlated with height and weight for O&G patients undergoing minimally invasive surgery.

This is a prospective study from the date of approval of the study for a period of 24 months.

The potential participants are from O&G department who will be undergoing laparoscopy

The participant's height, weight, and total volume of carbon dioxide gas infused into the abdomen are collected from CPSS to create a standard operative pneumoperitoneum of 18mmHg for all patients undergoing laparoscopic procedures.

Patients with an abdomino-pelvic mass, or pelvic masses larger than 12 weeks size, or assessed to have an abdominal mass are excluded. Pregnant and/or breast feeding women are also excluded.

Specific patient identifiers will not be collected into the data collection and are not necessary to the study or to achieving to the objective of the study. Therefore data will not contain any identifiers.

Inclusion Criteria:

• O&G patients that are undergoing laparoscopic surgery.

Exclusion Criteria:

• Patients with an abdomino-pelvic mass
• Patients with pelvic masses larger than 12 weeks size
• Patients assessed to have an abdominal mass
• Pregnant and/or breast feeding women

Women going for laparoscopic surgery under the O&G department.