The Influence of Combining the Pulmonary Recruitment Maneuver With Active Gas Aspiration on Post-Laparoscopic Shoulder Pain in Patients Having a Gynecologic Laparoscopy, Randomized Double Blinded Clinical Trial

The PLSP can even remain for up to three days and often upsets the patients . Moreover, it can increase the costs of healthcare owing to an increased usage of analgesics, delayed discharge, and even re-admission .

Therefore, necessary measures should be taken to diminish the intensity of PLSP. Although the exact mechanism of PLSP remains unclear, some studies have suggested that it is caused by the trapping of carbon dioxide (CO2) between the liver and the right diaphragm and subsequent conversion into carbonic acid, which irritates the diaphragm and subsequently generates referred shoulder pain (C4 dermatomal) . Therefore, several studies have attempted to decrease the incidence or severity of PLSP by promoting the removal of remaining CO2 from the abdominal cavity. These efforts include drainage tube insertion, intraperitoneal saline instillation (IPSI), and the usage of intraperitoneal local anesthetic agents . More-over, the pulmonary recruitment maneuver (PRM) can also facilitate the removal of CO2 from the abdominal cavity by increasing positive airway pressure and intrathoracic pressure. PRM is more commonly used in clinical practice because it does not require drugs, specialized apparatus, or additional medical costs, unlike the other methods . Several trials have described the advantages of PRM in patients undergoing laparoscopic operations compared to passive abdominal compression.

Inclusion criteria

• • Age 18- 65 years.

• American Society of Anesthesiologists physical status classification (ASA) I - II
• scheduled for an elective gyncologic laparoscopic procedures

Exclusion criteria

• • Urgent or emergency case.

• ASA classification more than III.
• Age less than 16 years.
• Reduced left and right ventricular function (ejection fraction <40%).
• Previous respiratory disease such as chronic obstructive pulmonary disease, restrictive lung disease, or had a history of thoracic or shoulder surgery
• Patient conversion to a laparotomy.
• the operation time is more than 3 h