... 150 , 151 , 152 intubation 179loops 138, 152 –4, 155 pathology 159 –61, 162,163–7perforation 157 –8rotation 140–1sigmoid 143–4, 152 –4sigmoid–descending junction 150 , 151 , 152 –4strictures 158 transverse ... reactions 48–9care after 52 chromoendoscopy 188colonoscopy 139–40complications 48–9, 50 conscious 47, 56 ,57 deep 47, 51 , 56 , 57 , 119diagnostic procedures 46 57 documentation 50 , 52 equipment 49goals ... internal 15 reflux esophagitis seegastroesophageal refluxdiseasereprocessing of endoscopes 35 6,38–43respiratory depression 49, 51 , 55 , 57 reversal 54 retroflexion technique 75 6, 85 RGB (red,...