This study aims to compare the effects of conscious sedation and intravenous general anesthesia on cardiovascular events in frail patients undergoing digestive endoscopy diagnosis and treatment.

This study aims to compare the effects of conscious sedation and intravenous general anesthesia on cardiovascular events in frail patients undergoing digestive endoscopy diagnosis and treatment.

Both sets of anesthesia plans completed preoperative evaluations, including blood count, coagulation function, liver and kidney function, and cardiopulmonary function. Routine monitoring of electrocardiograms (ECG), non-invasive blood pressure (NIBP), pulse oximetry (SpO2), open veins, and administration of a balance solution of 3-5ml/kg. h. The conscious sedation group (Group A) received sufentanil 0.05-0.1 5 minutes before examination μ G/kg, administration time 30 seconds, 1-2 mg of midazolam administered 2 minutes before examination; Evaluate the patient's MOAA/S score, insert a digestive endoscope at 2-3 minutes, and add 1-2mg of midazolam if the patient is unable to tolerate coughing or movement during the examination. Reevaluate the MOAA/S score, and continue the operation after 2-3 minutes; Intravenous general anesthesia group (Group B): sufentanil 0.05-0.1 μ G/kg, administration time 30 seconds, 1mg/kg of propofol administered 2 minutes before examination. Depending on the patient's sleep status, 10mg of propofol can be administered every 30 seconds; Evaluate the patient's MOAA/S score. At 0-1 points, a digestive endoscope is inserted. If there is coughing or physical activity during the examination that the patient cannot tolerate, propofol 10-20mg can be administered multiple times. Evaluate the MOAA/S score again, and continue the operation after 0-1 points. All anesthetics should be discontinued before the end of the surgery. Since the examination, blood pressure should be measured every 2 minutes, while HR, SpO2, and RR should be recorded to observe if there are any abnormalities in the electrocardiogram. If there are any abnormalities, please explain until the endoscope is removed from the dental pad. Record the satisfaction of gastroenterologists, anesthesiologists, and patients after surgery. Follow up patients by phone within three days after surgery to determine the incidence of adverse events (dizziness, headache, palpitations, wheezing, mobility, nausea and vomiting).

Inclusion Criteria:

1. Age greater than 65 years old, regardless of gender
2. ASA is classified as Class II and III;
3. BMI 18-28 kg/m2;
4. Patients undergoing examination or treatment outside the operating room;
5. FRAIL scale score ≥ 3 points 6 The patient voluntarily participated in this study and signed an informed consent form.

Exclusion Criteria:

1 Those who are allergic or contraindicated to drugs such as benzodiazepines, opioids, propofol, and their drug components;

2. Acute heart failure; Unstable angina pectoris; Myocardial infarction occurred within 6 months prior to screening; Resting electrocardiogram heart rate<50 beats/minute; Third degree atrioventricular transmission delay; Severe arrhythmia; Moderate to severe heart valve disease;

3. Patients with severe respiratory diseases (acute respiratory infections, acute exacerbations of chronic obstructive pulmonary disease, uncontrolled asthma, etc.);

4. Patients who have not received formal antihypertensive treatment or have poor blood pressure control;

5. Patients with traumatic brain injury, possible presence of intracranial hypertension, cerebral aneurysms, history of cerebrovascular accidents, and central nervous system diseases;

6. Individuals with mental system diseases (schizophrenia, mania, bipolar disorder, mental disorder, etc.), long-term history of taking psychotropic drugs, and cognitive impairment;

7. Other situations that have been determined by the researcher to be unsuitable for inclusion.

On the premise of ensuring clinical work and safety, in order to objectively evaluate the research results, the single blind method is reasonably used in this project. Patients are unaware of the anesthesia plan, and preoperative data collection and implementation of the anesthesia plan are carried out by experienced anesthesiologists who have undergone detailed training. Postoperative PACU clinical data and postoperative follow-up were followed up by another anesthesiologist who was unaware of the trial group over the phone.