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Within 30 minutes before anesthesia, acupoint electrical stimulation at different frequencies were applied at Neiguan, Jian Shi, and Baihui. The changes in blood pressure during the anesthesia induction period were compared between the high-frequency group and the low-frequency group.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| High-frequency | Experimental | The electrical stimulation is provided at a frequency of 100Hz |
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| Low-frequency | Active Comparator | The electrical stimulation is provided at a frequency of 2Hz |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| electrical acupoint stimulation | Other | Electrical stimulation are administered at Neiguan, Jian Shi, and Baihui. The stimulation starts at 15 minutes before anesthesia induction and ends at 15 minutes after anesthesia induction. |
| Measure | Description | Time Frame |
|---|---|---|
| The area under the curve representing the change in mean arterial pressure during the induction period relative to the baseline. | The MAP is continuously recorded by the DoCare Information System every 30 seconds. The AUC below baseline MAP is calculated as: ∑ (((Si - Sbaseline)+(Si-1 - Sbaseline))/2 × ΔX), where Sbaseline is the baseline MAP, Si is the MAP at minute i (i = 0.5, 1, 1.5, …, 15) after start of anesthesia induction, and ΔX is the time interval between measurements. | from start of induction to 15 minutes after induction |
| Measure | Description | Time Frame |
|---|---|---|
| Incidence of hypotension during the induction period | from start of induction to 15 minutes after induction | |
| The dosage of vasoactive drugs | from start of induction to 15 minutes after induction |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Role | Phone | Extension | |
|---|---|---|---|---|
| Zhihong Lu | Contact | 86-13891975018 | deerlu23@163.com | |
| Hailong Dong | Contact | 86-29-84775337 | hldong6@hotmail.com |
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| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Xijing Hospital, Fourth Military Medical University | Recruiting | Xi'an | Shannxi | 710032 | China |
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| The incidence of major complications (cardiovascular adverse events, acute kidney injury, delirium) | from end of surgery to discharge from the hospital, at an average of 5 days |
| Length of hospital stay | from end of surgery to discharge from the hospital, at an average of 5 days |
| The rate of patients admitted to the intensive care unit (ICU) after surgery | from end of surgery to discharge from the hospital, at an average of 5 days |
| The rate of patients achieving the best recovery after surgery (discharged within 5 days after surgery, without major complications, no incision infection, no readmission, and survive within 30 days after surgery) | from end of surgery to 30 days after surgery |
| The score of the discharge quality assessment scale | Quality of Recovery, QoR-15 15 items across 5 dimensions: physical comfort, physical independence, psychological support, emotional state, and pain. Each item is scored from 0 to 10. The total score ranges from 0 to 150, with a higher score representing better recovery. A change of 8 points or more is considered a Minimally Clinically Important Difference (MCID), meaning a meaningful improvement or decline from the patient's perspective. | at discharge from the hospital, at an average of 5 days after surgery |