Fig. 1From: Respiratory support with nasal high flow without supplemental oxygen in patients undergoing endoscopic retrograde cholangiopancreatography under moderate sedation: a prospective, randomized, single-center clinical trialCONSORT flow chart. NHF: Nasal high flow, LFO: Low-flow oxygen via a nasal cannula, PtcCO2: Transcutaneous CO2 partial pressureBack to article page