During pneumoperitoneum insufflation the insufflated gas increase intra-abdominal pressure. The generated pressure can lead to a different increase in volume depending on the abdominal cavity and patients' characteristics. The primary objective is to determine the relationship between intraabdominal pressure (IAP) and intraabdominal volume (IAV) during pneumoperitoneum insufflation. The secondary objective is to determine the rate of abdominal-thoracic transmission (ATT) assessing the correlation between IAP and respiratory driving pressure (ΔPRS).
Study Type
OBSERVATIONAL
Enrollment
204
Before surgery pneumoperitoneum is established by insufflating gas into the abdomen. Intraabdominal pressure (IAP) is set to 15 mmHg for initial abdominal stretching and then decreased in a stepwise manner down until 8 mmHg.
Hospital la Fe
Valencia, Spain
Intraabdominal volume
Time frame: During pneumoperitoneum insufflation before surgery
Driving pressure
This is the pressure that exert a stress on the respiratory system during mechanical ventilation. It is calculated by subtracting the positive endexpiratory pressure from plateau pressure
Time frame: During pneumoperitoneum insufflation before surgery
Plateau pressure
This is the pressure in the airway during the mechanical venitilation inspiratory pause time
Time frame: During pneumoperitoneum insufflation before surgery
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