RESUMEN
Objective To investigate the influence of Bupivacaine injection speed on blood pressure of patients undergoing cesarean section.Methods 90 patients(ASAⅠ-Ⅱ)who underwent cesarean section were selected with combined spinal-epidural anesthesia were divided randomly into three groups(20 for each).0.5% bupivacaine 1.4ml(7mg),the speed of injection in group A,group B and group C is 10 seconds,20 seconds,30 seconds.Systolic blood pressure(SBP),Diastolic blood pressure(DBP)and Heart rate(HR)were recorded before anesthesia and 5min,10min,15min and 30min after anesthesia.Cases need to be added epidural drug were all recorded.Results The age,body length and body weight in the three groups has no significant difference,location of injection and posture were same.The best effect of anesthesia was founded in group B,blood pressure(BP)and HR was stable.The effect of anesthesia was better but BP and HR were obviously descent in group A.The block level of anesthesia was unsatisfactory and need to add epidural drug in group C.Conclusion The injection speed of 0.5% bupivacaine 1.4ml in combined spinal-epidural anesthesia is suitable of 20 seconds when patients underwent cesarean section.
RESUMEN
Objective To investigate the effect of ropiyacaine combined with intra-spinal epidural anesthesia by using the same volume but different injection speed on anaesthetic level.Methods 80 cases of patients of ASA～Ⅱdegree suitable to use intra-spinal epidural combined anesthesia for gynecologic operation were selected and ran- domly divided into three groups,0.75 % ropivacaine 2mg(15mg)administered,group A the speed of injection was 10 seconds,group B injection speed was 20 seconds,group C injection speed was 30 seconds,the anaesthetic level reached T_(10).The time of highest level in spinal anesthesia,30 minutes after spinal anesthesia MAP,and number of cases need to add epidural drug were all recorded.Results The best effect of anesthesia was found in group B,the block level of anesthesia was satisfactory,blood dynamic was stable,and there was no need to add epidural drug.Conclusion The speed of 0.75 % ropivacaine 2ml spinal epidural combined with anesthesia was suitable at the speed of 20 seconds.