Does Premedication with Mucolytic Agents Improve Mucosal Visualization during Oesophagogastroduodenoscopy: A Systematic Review and Meta-Analysis

Figure 9

Endoscopic scoring system. Score of 1: No bubbles; Score of 2: Minimal bubbles which the endoscopist must actively look for; Score of 3: Foam is obviously present but not severe; Score of 4: Severe foam obscuring vision; Area (A): Esophagus; Area (B): The antrum and angularis of the stomach; Area (C): The body and fundus of the stomach; Area (D): Duodenum. TMVS is the sum of the scores of areas A, B, C, and D added together. TMVS: total mucosal visibility score.