NCT07467135

Lung Mechanics and Ventilation Efficiency in Robotic Surgery

Phase-Specific Evaluation of Lung Mechanics and Ventilation Efficiency During Robotic Surgery: A Prospective Observational Cohort Study

• Status: Not Yet Recruiting
• Phase: —
• Study type: Observational
• Enrollment: 65 (estimated)
• Sponsor: Ankara City Hospital Bilkent · Academic / Other
• Sex: All
• Age: 18 Years
• Healthy volunteers: Accepted

Summary

Robotic surgery requires pneumoperitoneum and specific surgical positioning such as steep Trendelenburg, reverse Trendelenburg, or supine positioning. These intraoperative conditions may lead to cranial displacement of the diaphragm, reduced lung compliance, and increased airway pressures, potentially impairing respiratory mechanics and gas exchange. Previous studies have primarily evaluated respiratory mechanics during robotic surgery at single time points or within specific surgical procedures. However, dynamic changes occurring during critical phases of robotic surgery have rarely been evaluated prospectively. This prospective observational cohort study aims to evaluate phase-specific changes in lung mechanics and ventilation efficiency during robotic surgery. Key parameters including mechanical power (MP), ventilation efficiency index (VEI), static compliance, and driving pressure will be analyzed across predefined intraoperative phases.

Conditions

• Robotic Surgery

Interventions

Type	Name	Description
OTHER	Intraoperative Mechanical Ventilation Monitoring	Prospective recording of ventilatory parameters and respiratory mechanics during robotic surgery under general anesthesia. Measurements will be obtained at predefined surgical phases (after intubation, pneumoperitoneum initiation, steep Trendelenburg positioning, undocking, and before extubation). Recorded parameters include tidal volume, respiratory rate, peak airway pressure, plateau pressure, positive end-expiratory pressure, arterial blood gas measurements, and calculated indices such as mechanical power, driving pressure, static compliance, and ventilation efficiency index.

Timeline

• Start date: 2026-03-20
• Primary completion: 2026-04-01
• Completion: 2026-06-30
• First posted: 2026-03-12
• Last updated: 2026-03-12