The Effect of Intravenous Small-Volume Sodium Potassium Magnesium Calcium and Glucose Injection on Dizziness in Outpatients Undergoing Painless Gastroenteroscopy: a Randomized Clinical Trial

INTERVENTION: experimental group:the experimental group was administered of 20ml sodium potassium magnesium calcium and glucose injection before anesthesia;control group:the control group was administered of 20ml 0.9% normal saline before anesthesia; CONDITION: Dizziness PRIMARY OUTCOME: The incidence of moderate to severe dizziness; SECONDARY OUTCOME: Dizziness score;Awakening time;The length of the PACU stay;Incidence of nausea and vomiting;Patient satisfaction score(0‐10) before leaving PACU;Haemodynamics; INCLUSION CRITERIA: 1. Aged 18‐65 years; 2. ASA I‐II level; 3. Sign the informed consent form.