Anaesthesia for endoscopy and ERCP

Model answer

Choice (5). Semi-prone ERCP in an ASA III elderly patient is GA with a cuffed tracheal tube until proven otherwise — per the sedation-recommendations review triage and the prone-series exclusion discipline; comorbidity thinking is RCRI-organised.^[4][7][1]

Monitoring (5). Full GA standards; if deep sedation is chosen, waveform capnography leads — ventilation monitoring by pulse oximetry alone is abandoned for direct methods — with the airway trolley in the room, per the monitoring and recommendations reviews.^[5][4]

Crises (5). Desaturation: withdraw the scope and oxygenate — the expected event in the prone series (35%, oxygen via nasopharyngeal catheter sufficient in almost all); sepsis and bleed plans per the deep-sedation ERCP context and the major-haemorrhage protocol (1 g TXA is trauma-trial evidence).^[7][6][3]