Table 1.

An example of an airway management vignette with Script Concordance Test (SCT) items.

A four-year old patient with ASA 1 without airway difficulty came to the hospital with a foreign body (a coin) in the esophagus. Extraction was done intraoperatively using an endoscopic probe. Induction and intubation were done without any difficulty. However, during intraoperative, oxygen desaturated gradually until 85%.
If you were thinking of …	Then you found on clinical presentation/investigation …	The hypothesis becomes …
1. Endotracheal tube dislodge	End-tidal CO2 (ETCO2) can still be read with an unchanged wave, but the value was around 25 mmHg (previously it was 38–40 mmHg)	−2, −1, 0, +1, +2
2. Change the ventilator mode to the manual bagging mode	The breathing circuit and connector were well connected, but the bellow progressively fell.	−2, −1, 0, +1, +2
3. Open draping immediately, extubate, and re-intubate	SpO2 was still not increased, ETCO2 decreased further, and there was an air leak sound from the oral	−2, −1, 0, +1, +2

Where: −2: ruled out or almost ruled out; −1: less probable; 0: neither less nor more probable; +1: more probable; +2: certain or almost certain