Pre-operative preparation
1. ear blood time should not be higher than 2 minutes and 30 seconds, screening patients and perfecting the routine examination for admission.
2. No infection foci at puncture sites and pathway sites; Huang Wei, Department of Pain, Yunyang County Hospital of Traditional Chinese Medicine
3. echocardiography for EF values, left ventricular diastolic function, pulmonary function for 1-second rate and 1-second volume in patients over 70 years old
4. talking to patients: problems with 1 branch, abnormal problems such as no hole, empty with cover, individual differences in pterygoid outer plate obstruction, problems with poor results, numbness after RF, signing the consent form for surgery and anesthesia.
5. practicing surgical positions.
6. instructing patients to be proficient in facial skin position.
7. eat 8 hours before surgery, abstain from drinking for 6 hours, and shave beard for male patients.