Upon introducing pneumoperitoneum our research team noticed a reduction in expiration time displayed on the screen of the anesthesia machine. Since most respirators do not directly indicate the length of expiratory time and the average expiratory flow rate, we decided to investigate whether pneumoperitoneum really accelerates expiratory flow rate and thus shortens expiratory time.
Furthermore we also intended to investigate which ventilation parameters these changes can be correlated with, elucidating the factors contributing to the acceleration of expiration.. This study aims to uncover the physiological mechanisms behind alterations in respiratory dynamics during and after pneumoperitoneum, offering valuable insights that may aid in refining ventilation strategies in the context of laparoscopic procedures.
Study Type
OBSERVATIONAL
Enrollment
67
pneumoperitoneum
Department of Anaesthesia and Intensive Care, Medical School, University of Pécs
Pécs, Baranya, Hungary
Pneumoperitoneum increases mean expiratory flow rate
Elevated intraabdominal pressure leads to a decrease in respiratory compliance and an increase in peak inspiratory pressure., therefore (consequently), expiration commences with a higher pressure difference.
Time frame: during surgery
Expiration time would be shortened, resulting in a potentially higher flow rate
We assumed (hypothesized) that the expiration time would be shortened, resulting in a potentially higher flow rate compared to pre-pneumoperitoneum conditions. Additionally, we also conducted calculations to establish correlations between respiratory parameters and the mean increment in expiratory flow rate relative to the baseline.
Time frame: during surgery
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