An Observational Study to Assess the Role of Transnasal Humidified Rapid Insufflation Ventilatory Exchange with Target Controlled Infusion as Sole Airway Management Strategy During Endoscopic Retrograde Cholangiopancreatography Under General Anaesthesia. Int. J. Environ. Sci. Published online August 20, 2025:3288-3296. doi:10.64252/dpae9583