Anesthesia
Conditions
Keywords
acupoint stimulation, general anesthesia, gastric reflux, igel
Brief summary
This study will compare the effects of transcutaneous acupoint electrical stimulation versus no stimulation on intraoperative gastric reflux in patients undergoing general anesthesia with i-gel airway device ventilation.
Interventions
OTHERtranscutaneous electrical acupoint stimulation
electrical stimulation at 2Hz/10Hz is given from induction to end of surgery
Electrodes are pasted to the skin of Neiguan, Zusanli, Gongsun, Taichong acupoints
Sponsors
Air Force Military Medical University, China
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
PREVENTION
Masking
TRIPLE (Subject, Caregiver, Outcomes Assessor)
Eligibility
Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No
Inclusion criteria
* age ≥18 years old * scheduled for surgery under general anesthesia with igel ventilation
Exclusion criteria
* American society of anesthesiologists status higher than grade 3 * history of gastrointestinal surgery * Currently taking acidic medications, or medications that affect gastric acid secretion or gastrointestinal motility * High risk of reflux or aspiration (e.g., symptomatic gastroesophageal reflux disease or hiatal hernia) * History of postoperative nausea and vomiting (PONV) * Intraoperative requirement of Trendelenburg position * Expected surgery duration exceeding 4 hours * Contraindications for acupoint electrical stimulation, such as patients with implanted electrophysiological devices, or skin infection/lesions at acupoint sites
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| pH value at middle-esophageal part at end of surgery | at end of surgery |
Secondary
| Measure | Time frame |
|---|---|
| number of gastric reflux episodes | from intubation of igel to end of surgery, at an average of 2 hours |
| total duration of gastric reflux episodes | from intubation of igel to end of surgery, at an average of 2 hours |
| longest duration of gastric reflux episodes | from intubation of igel to end of surgery, at an average of 2 hours |
| pH value at glottis at the end of surgery | at end of surgery |
| percentage of patients suffering postoperative nausea and vomiting by 24 hours after surgery | from end of surgery to 24 hours after surgery |
Contacts
Primary ContactZhihong Lu
Outcome results
None listed