The triad of acute pericardial tamponade includes: 1. drop in blood pressure: because of large amount of pericardial fluid, resulting in reduced blood return to the heart, there is a drop in blood pressure, and blood pressure-raising drugs can be applied; 2. distant heart sounds: because of large amount of pericardial fluid outside the heart, the heart sounds are distant on auscultation; 3. jugular vein anger. The main resuscitation measure for pericardial tamponade is to perform pericardiocentesis to relieve pericardial tamponade. Pericardial tamponade is an acute complication of pericardial effusion. If it is a small amount of pericardial effusion, the patient often has insignificant symptoms, manifesting as chest tightness and chest pain; if there is a large increase in pericardial effusion in a short period of time, severe respiratory distress and circulatory failure may occur, which may endanger the patient’s life if not treated in time.