嬰幼兒腹橫肌平面阻滯的相關(guān)臨床研究
[Abstract]:Transversus abdominal dominis plane block (TAPB) is a regional analgesia technique for abdominal anesthesia. It can provide effective analgesia for anterior abdominal skin, muscle and peritoneal wall through nerve block in the plane lacuna of transverse abdominal muscle. In this study, TAPB in infants and young children was studied by ultrasound imaging, effective dosage of drugs, puncture approach and so on. Part one: Comparison of analgesic effect and drug expansion in infants and young children with different volume of 1% lidocaine TAP. Objective: To compare the analgesic effect and drug diffusion of 1% lidocaine in transverse abdominal plane block in infants and young children.Methods: 60 infants, 40 males and 20 females, who were selected to undergo selective unilateral indirect inguinal hernia or hydrocele surgery according to the selected criteria, were selected. All the patients were induced by sevoflurane inhalation. After successful TAP puncture by transaxillary midline under ultrasound guidance, the children in L_ (0.3) group were injected with 1% lidocaine 0.3 ml/kg, the children in L_ (0.5) group were injected with 1% lidocaine 0.5 ml/kg, the children in C group were injected with 0.3 ml/kg or 0.5 ml/kg saline. After TAP puncture and injection, the onset time and blocking range of lidocaine were measured by acupuncture under midazolam sedation. After induction of sevoflurane anesthesia, laryngeal mask was inserted and 3% sevoflurane was inhaled to maintain anesthesia. Remifentanil was continuously or intermittently infused during operation according to the changes of heart rate and blood pressure. Ultrasound images were used to measure the distance of local anesthetic solution from the middle axillary line to the end of the head and tail of TAP, the distance between the internal oblique and transverse abdominal muscles (I-T) and the distance between the liquid and the lowest costal margin, the iliac spine. Result: (1) The onset time and duration of TAPB in two groups were the same (P 0.05). The level of TAP blockade in L_ (0.5) group was up to T10. The level of TAP blockade in L_ (0.3) group was lower than that in L_ (0.5) group (P 0.01). L_ (0.3) and L_ (0.5) group were lower than that in C group (P 0.01). There was no difference in the amount of remifentanil between L_ (0.3) and L_ (0.5) groups (P 0.05). After TAP injection, the ultrasonic image showed a spindle-shaped or spoon-shaped cavity of TAP solution. After TAP injection, the liquid diffused forward and backward, the diffused distance between head and tail increased, the distance between the liquid and the lower costal margin decreased, but at the end of surgery, the above-mentioned diffused distance of the liquid did not change significantly. Compared with L_ (0.3), the distance between L_ (0.3) and subcostal margin was shorter, and the distance to other directions was wider. When the TAP blockade disappeared, ultrasound images showed that some of the children in both groups still had a small amount of residual TAP fluid in the cavity. The posterior sheath of the internal oblique muscle and the transverse abdominal muscle fascia were significantly thickened and swelled after being infiltrated by the liquid. Conclusion: (1) 0.3ml/kg and 0.5ml/kg of 1% lidocaine can be used to lift the oblique inguinal hernia and hydrocele in infants. To provide reliable TAP blockade effect and reduce the use of opioids during operation. (2) After TAP injection in infants and young children, changes with time, ultrasound imaging shows that drug diffusion characteristics are different: after injection to the drug onset of two-way diffusion, head-tail diffusion is obvious; and at the end of the operation, drug diffusion is stable at the level of drug onset, not clear. The volume of the drug has a significant effect on the diffusion of TAP. When the volume increases, the diffusion distance increases in all directions and the distance from the infracostal margin shortens, which is conducive to increasing the blocking range of the innervating nerve in the lower abdomen. Methods: (1) 100 infants, 75 males and 25 females, were selected to undergo unilateral oblique inguinal hernia surgery or excision of lower inguinal mass. The children were randomly divided into two groups. Twenty children in each group were treated with sevoflurane inhalation, and TAP puncture was performed under the guidance of ultrasound. The concentrations of 0.1%, 0.125%, 0.15%, 0.20% and 0.25% levobupivacaine in different TAP groups were given 0.5 ml/kg. If the body movement reaction occurs, or the heart rate or blood pressure increases by 20% for more than 1 minute, the TAP block is considered ineffective. The general condition of the five groups of children, the effective number of TAPB and the effective nerve block of TAPB were recorded and compared. The EC50, EC95 and 95% confidence intervals of 0.5ml/kg levobupivacaine for infantile TAPB were measured by Probit unit regression method. (2) 100 infants, 77 males and 23 females, were selected for unilateral indirect inguinal hernia or 50 infants for unilateral subumbilical abdominal mass resection. The children were randomly divided into five volume groups: L_ (0.2), L_ (0.25), L_ (0.3), L_ (0.3), L_ (0.3) 5 and L_ (0.4). Each group had 20 cases. The volume of levobupivacaine given by TAPB was 0.2 ml/kg, 0.25 ml/kg, 0.30 ml/kg, 0.35 ml/kg and 0.4 ml/kg, respectively. EV50, EV95 and 95% confidence intervals of 0.25% levobupivacaine for ultrasound-guided TAP block in infants and young children were measured by Probit unit regression. Results: (1) EC50 of 0.13% (95% confidence interval 0.118% ~ 0.148% for ultrasound-guided TAP block in infants and young children was 0.5 ml/kg levobupivacaine. EC95 was 0.23% (95% confidence interval was 0.20% ~ 0.31%); Probit dose-response relationship equation was: Probit = 5.84 + 6.682X. There were significant differences in postoperative analgesic time between the groups (P 0.01), and there were also differences between the two groups (P 0.05). There was a significant positive correlation (P 0.01) and a linear relationship (P 0.01). The linear equation was: postoperative analgesia time = - 3.316 + 68.03X. (2) EV50 of 0.25% levobupivacaine for TAPB was 0.27 ml, 95% confidence interval was (0.248 ~ 0.284), EC95 was 0.37 ml, 95% confidence interval was (0.339 ~ 0.435), and dose-effect relationship formula was established. There was no significant difference in postoperative analgesic time between the two groups (P 0.01). Conclusion: (1) EC50 and EC95 of 0.5 ml/kg levobupivacaine for TAPB in lower abdomen were 0.13% and 0.23% respectively under ultrasound guidance in infants and young children with effective TAP blockade in each dose group. (2) EV50 and EV95 of 0.25% levobupivacaine were 0.27 ml and 0.37 ml for TAPB in lower abdominal surgery under ultrasound guidance. There was no difference in the postoperative analgesic time between the patients with effective TAP block in each volume group. Objective:To compare the analgesic effects of ropivacaine axillary midline block and posterior TAP block in infants undergoing lower abdominal surgery.Methods:Sixty infants, 44 males and 16 females, were selected and divided into three groups according to the different methods of TAP block. Methane inhalation was induced in group A, axillary midline TAP block under ultrasound guidance was performed in group B, posterior TAP block under ultrasound guidance was performed in group B, and 0.25% ropivacaine 0.4 ml was injected into group C. The control group was given general anesthesia only peripheral venipuncture without TAP block. Ropivacaine onset time and blockade range. After induction of anesthesia with sevoflurane inhalation, the patient was given a laryngeal mask and maintained anesthesia with 3% sevoflurane inhalation. During the operation, the dosage of remifentanil was adjusted according to the changes of heart rate and blood pressure. The duration of laryngeal mask, the duration of stay in PACU, the onset time of TAP block in group A and B, the range of block, the changes of blood pressure and heart rate before and after skin incision were observed, and the total amount of remifentanil was calculated. FLACC score was used to assess the pain at 6 and 24 hours. Operational complications and toxic side effects of local anesthetics were observed during TAP blockade. The occurrence of nausea and vomiting, dizziness and headache, palpitation, respiratory depression and somnolence were recorded 24 hours after operation. There was no significant difference in onset time between the two groups (P 0.05) at 6 65 The total amount of remifentanil used in operation was less than that in general anesthesia control group (P 0.01); during the stay in PACU, the incidence of restlessness and PAED scores in group A and B were lower than those in control group (P 0.05); FLACC scores in group A and B were significantly lower than those in group A, 4, 8 and 12 hours after operation (P 0.05); FLACC scores in group B were significantly lower than those in group A and C at 16 hours after operation (P 0.05). Conclusion: TAP block with 0.25% ropivacaine 0.4ml/kg by midaxillary route and posterior route can provide satisfactory results for infants undergoing lower abdominal surgery. The onset time of TAP block is the same, but the level of TAPB by posterior route is higher and the postoperative analgesia time is longer, both methods can significantly reduce the operation of infants and young children. Conclusion 1.0.3 ml/kg and 0.5 ml/kg of 1% lidocaine can provide reliable TAP blocking effect for infants undergoing indirect inguinal hernia and hydrocele surgery. The EC50 of TAPB was 0.13% and EC95 was 0.23% under ultrasound guidance. 4. EV50 of TAPB was 0.27 ml and E was 0.25% under ultrasound guidance. V95 was 0.37ml.5.The onset time of TAPB was the same in infants and young children treated with 0.25% ropivacaine 0.4ml/kg in axillary midline and posterior route, but the blockade range of TAPB in posterior route was higher and the postoperative analgesia time was longer than that of axillary midline.
【學(xué)位授予單位】:天津醫(yī)科大學(xué)
【學(xué)位級別】:博士
【學(xué)位授予年份】:2017
【分類號】:R726.1
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