Based on variable selection by multivariate logistic regression and random forest modeling, nine variables were used to construct a nomogram, including gender, pulmonary hypertension (PH), STEMI, pericardial effusion, BMI, NT-ProBNP, creatine kinase (CK), LVEF and HbA1c (Figure 4). The gene discussed is NPPB; the disease is pericardial effusion.