The whole workflow of catheter room during coronary angiography mainly includes: 1, participation in preoperative discussion, signing relevant informed consent forms and other preoperative preparation documents; 2, nurses know preoperative plan, prepare preoperative medication, prepare related equipment, do a good job in patient emotional counseling and necessary local skin preparation; 3. The radiologist checks the machine to ensure that the equipment system works normally; 4. The surgical nurse guides the patient into the catheter room, and guides the patient to lie on the operating table. The ECG monitoring technician connects the electrical monitor and observes it.

The oscillogram and preoperative electrocardiogram were recorded, and the surgical nurse completed the establishment of the patient's venous passage, the disinfection of the patient's surgical site and the towel laying. 5. Assistants should wear hand washing clothes, hand brushing clothes and lead clothes. With the help of a surgical nurse, he should put on a surgical gown and sterile gloves. Then, with the help of ECG monitoring technicians, he should connect the pressure measuring system, contrast medium channel, puncture instrument and necessary rescue drugs. 6. The assistant completes arterial puncture with the help of the nurse, and is ready to compare the catheter with the guide wire to check whether the connection system is ready; 6. With the cooperation of the assistant, the operator inserts the coronary angiography catheter under the guidance of the ultra-smooth guide wire. According to the requirements of the operator, the assistant shakes the bed and controls the appropriate projection position, and injects contrast agent under the guidance of the operator to complete the coronary angiography; 7. During the operation, the nurse should provide instruments at the request of the operator and closely observe the patient. The ECG monitoring technician monitors the changes of ECG and pressure curves of the bed at any time and responds to the operator in time. Radiologists cooperate with operators to operate X-ray machines and fluoroscopy machines, and play back images at any time as needed. 8. After the operation, the assistant pulls out the arterial sheath, pressurizes the puncture site to stop bleeding and bandage it, transfers the patient back to the ward and explains the condition and matters needing attention to the ward doctors and nurses. The ECG monitor is withdrawn from the ECG monitoring line, the radiologist saves the data and maintains the inspection equipment, the nurse keeps the use record of surgical instruments, and cleans, sorts and disinfects the instruments after the operation. The operator or assistant completes the coronary angiography results and postoperative records. During the whole operation, there are surgeons, assistants and surgical nurses on the stage, and ECG monitors and radiologists under the stage. To complete a coronary angiography, at least five staff members are needed, including 1 surgeon and assistant, 1 nurse, 1 ECG monitor and radiologist.