Early risk stratification of post-endoscopic retrograde cholangiopancreatography pancreatitis using 4-hour serum amylase and lipase: A prospective study

Figure 1 Flow chart of the study. ERCP: Endoscopic retrograde cholangiopancreatography; PEP: Post-endoscopic retrograde cholangiopancreatography pancreatitis; AUC: Area under the curve; PPV: Positive predictive value; NPV: Negative predictive value.

Figure 2 Receiver operating characteristic curves for 4-hour and 24-hour biomarkers for predicting post-endoscopic retrograde cholangiopancreatography pancreatitis. A: Comparison of receiver operating characteristic curves for 4-hour and 24-hour amylase levels in predicting post-endoscopic retrograde cholangiopancreatography pancreatitis; B: Comparison of receiver operating characteristic curves for 4-hour and 24-hour lipase levels in predicting post-endoscopic retrograde cholangiopancreatography pancreatitis receiver operating characteristic, receiver operating characteristic.

Figure 3 Receiver operating characteristic curves for 4-hour biomarkers for predicting moderately severe to severe post-endoscopic retrograde cholangiopancreatography pancreatitis in high-risk groups. A: Serum amylase levels; B: Serum lipase levels.