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| Study on the relationship between the block Level and the body position in the same proportion bupivacaine used for combined spinal and epidural anesthesia during caesarean section |
| Qingdao Municipal Hospital，Shandong Province,266011 |
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Abstract Objective: The study of the relationship between the block Level and the body position in the same proportion isobaric bupivacaine used for combined spinal and epidural anesthesia during caesarean section. Methods: From January 2016 to January 2019，75 women who wanted caesarean section were selected and divided into 3 groups (25 cases in each group). During caesarean section, all women had accepted the intervertebral space of L3-L4 was inserted into the subarachnoid cavity and the same proportion of bupivacaine (0.5%) was injected into the subarachnoid cavity. And women in group I adopted the supine position， women in group II adopted the trendelenburg position with 5°, and women in group III adopted the trendelenburg position with 10°. The effect of anesthesia，the relative and absolute plane of the sensory block after injection，the systolic blood pressure，heart rate, and cardiac output before and after the injection，and the adverse reactions such as nausea and vomiting，and vasoactive drug used of pregnant women in the three groups were observed. Results: The absolute plane and the relative plane of anesthesia block of women in group III were T7±1.21 and T5±1.38, which were significant higher than those (T8±1.56 and T6±1.35, T8±1.32 and T6±1.04) of women in group I and II (P<0.05). There were no significant difference in index of hemodynamics before and after the anesthesia, adverse reactions rate, and the dosage of vasoactive drugs used of women among the three groups (P>0.05). Conclusion: When women adopt the trendelenburg position with 10°during cesarean section, the same proportion isobaric bupivacaine used for combined spinal and epidural anesthesia has the best anesthesia effect, which has no adverse influence on hemodynamics and adverse reactions of women.
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