Effect of Different Ventilation Modes on POCD in Elderly Patients with Abdominal Wall Hernia

Effect of Different Ventilation Modes on POCD in Elderly Patients with Abdominal Wall Hernia: a Randomized Controlled Trial

The purpose of this clinical trial is to understand the effect of different ventilation patterns during surgery on postoperative cognitive impairment in elderly patients with abdominal wall hernias. It will also explore how to reduce the incidence of postoperative cognitive impairment. The main questions it aims to answer are:

• Does the mode of ventilation affect the incidence of postoperative cognitive impairment in elderly patients?
• Does optic nerve sheath edema affect the incidence of postoperative cognitive impairment in elderly patients? Researchers will monitor patients with different ventilation patterns intraoperatively and investigate postoperatively to see if the ventilation pattern affects postoperative cognitive impairment.

Participants will:

• Randomly assigned to groups with different ventilation patterns
• Record various values during surgery by the researchers
• Presence of cognitive impairment assessed by cognitive scales after surgery

Inclusion Criteria:

• Age: 65-90 years
• patients with abdominal wall hernias
• American Society of Anesthesiologists general status (ASA-PS) classes II and III.

Exclusion Criteria:

• Emergency (rather than elective) surgery or other types of surgery required
• More than one surgery required during hospitalization
• Preoperative demonstrated inability to communicate (due to coma, severe dementia, Parkinson's disease, severe hearing or visual impairment, or speech impairment).