Objectives of Study:
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The purpose of this study is to combine acupuncture anesthesia with erector spinalis plane block technology, and provide a new method and idea for the anesthesia of thoracoscopic surgery. On the one hand, acupuncture anesthesia sedation, stable circulation, organ protection reduce the amount of intravenous adjuvant drugs, on the other hand, erector spinalis plane block makes up for the lack of acupuncture anesthesia analgesia, the combination of the two is expected to explore a feasible, safe, good experience for both doctors and patients, and can accelerate the recovery of patients, and promote the technology widely Provide theoretical basis and practical plan.
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Description for medicine or protocol of treatment in detail:
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As the erector spinalis plane block is a new type of nerve block technology, there is no unified plan for its local anesthetic dosage. In order to ensure the effectiveness of spinal plane block in thoracoscopic surgery analgesia, this study will be divided into two parts. In the first part, ED95 of 0.5% ropivacaine volume was determined by sequential method. In the second part, on the basis of the first part of the experiment, the recommended amount of local anesthetics obtained from the first part of the experiment was used to carry out the erector spinalis plane block, so as to ensure the effectiveness of the erector spinalis plane block, which is the second part of anesthesia without tracheal intubation The test of drunk method provides the basis for the smooth progress of the test.
1. ED95 of 0.5% ropivacaine volume was used for analgesia in thoracoscopic surgery.
Before operation, 0.5% ropivacaine with different volumes was used to block the erector spinalis at T6 segment. The dosage of ropivacaine in the first patient was 35ml, which was a larger volume value proved to be effective in the preliminary experiment. Because of the slow onset of erector spinalis plane block, clinical observation takes 30-60 minutes, while the clinical work is busy and the rhythm is fast, and the test of block plane depends on the subjective feeling of patients, there is a large error. Therefore, in this study, there is no significant fluctuation of vital signs at the beginning of skin incision, there is no agitation when patients wake up and extubate, and VAS score is not used 2 hours after surgery when no remedial analgesic drugs are used No more than 3 points were used to judge whether the erector spinalis plane block was effective or ineffective. According to Dixon's up-down sequential method, if the first patient is effective, the second patient's local anesthetic capacity will decrease by one step, that is, 2ml. On the contrary, if it is ineffective, the second patient needs to increase 2ml volume, and so on until there are seven inflection points of invalid volume. Then ED95 and 95% confidence interval (CI) of capacity are calculated according to probit probability regression method.
2. To compare the anesthesia method of conscious sedation by electroacupuncture combined with erector spinalis plane block without tracheal intubation and the anesthesia method of simple spinal muscle plane block combined with intravenous sedation and analgesia, it is clear that electroacupuncture can reduce the use of intravenous sedative and analgesic drugs, and electroacupuncture can make the circulation more stable.
The usage of intravenous sedative and analgesic drugs, the changes of vital signs, the operating experience of surgeons, the comfort of patients, and the quality of postoperative recovery were evaluated. Meanwhile, a number of molecular biological indicators related to surgical stress and prognosis were detected, such as plasma cortisol, plasma pain mediators β - endorphin, 5-hydroxytryptamine and inflammatory mediators The results of IL-6, TNF - α and so on confirmed that the anesthesia method of conscious sedation without tracheal intubation combined with erector spinalis plane block is safe and feasible, and can accelerate the recovery of patients.
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Exclusion criteria:
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Study one exclusion criteria
1) Patients who have participated in other clinical trials in the past four weeks;
2) Patients who could not cooperate to complete the study included infectious diseases and other medical history;
3) Patients with positive urine pregnancy test;
4) Patients with preoperative pain, using central analgesics, opioid addicts and addicts;
5) Severe other system diseases and serious mental diseases were found before operation;
6) Patients with abnormal liver and kidney function (ALT, AST, BUN, Cr exceeding 1.5 times of normal value);
7) BMI>=30kg/m2 or Weight less than 50kg;
8) Organic heart disease or arrhythmia;
9) Emergency surgery or video-assisted thoracoscopic surgery;
10) Spinal deformity, abnormal blood coagulation, and infection of puncture site of erector spinalis plane block.
Study 2 exclusion criteria
1) Patients with skin infection at acupoints and limb nerve injury;
2) Patients who have participated in other clinical trials in the past four weeks;
3) Patients who could not cooperate to complete the study included infectious diseases and other medical history;
4) Patients with positive urine pregnancy test;
5) Patients with preoperative pain, using central analgesics, opioid addicts and addicts;
6) Severe other system diseases and serious mental diseases were found before operation;
7) Patients with abnormal liver and kidney function (ALT, AST, BUN, Cr exceeding 1.5 times of normal value);
8) BMI>=30kg/m2 or Weight less than 50kg;
9) Organic heart disease or arrhythmia;
10) Emergency surgery or video-assisted thoracoscopic surgery;
11) Spinal deformity, abnormal blood coagulation, and infection of puncture site of erector spinalis plane block.
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