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作 者:洪彬源[1] 王汉兵[1] 刘洪珍[1] 周桥灵[1] 周俊[1] 杨承祥[1] 赖晓红[1] 伍辉萍[1]
出 处:《国际麻醉学与复苏杂志》2012年第4期226-231,共6页International Journal of Anesthesiology and Resuscitation
摘 要:目的研究不同复苏液对热伤休克的家兔心肌功能的影响。方法40只家兔完全随机分为4组(每组10只):Ⅰ组:对照组(未热伤组);Ⅱ组:0.9%生理盐水组;Ⅲ组:乳酸钠林格注射液组;Ⅳ组:醋酸钠林格注射液组。热伤达体表面积25%~30%后,液体输注速度以每1%热伤面积0.33ml·kg-1·h。持续4h。通过制备离体工作心脏模型测定各组心肌功能。结果Ⅱ组的心输出量(cardiacoutput,CI)[分别是(85±9)、(90±9)、(102±11)、(103±10)、(99±10)、(101±11)ml/min]、等容收缩期左心室内压力上升的速率(dp/dt)[分别是(1200±110)、(1350±125)、(1210±100)、(1200±115)、(1150±120)、(1000±95)mmHg/s](1mmHg=0.133kPa)、等容舒张期左心室压力下降的最大速率(dp/dt)[分别是(1000±95)、(1150±100)、(1110±105)、(1100±110),(1050±105)、(1000±100)mmHg/s]明显低于Ⅰ组(P〈0.05,P〈0.01),Ⅲ组上述参数有所提高,但未恢复到Ⅰ组相应的水平,Ⅳ组可使心肌功能接近Ⅰ组。Ⅱ组的每搏功[分别是(21.2±2.3)、(23.3±2.1)、(27.2±2.3)、(26.3±2.4)、(26.1±3.2)、(25.1±2.3)Q·mmHg·次-1·min-1]和主动脉峰值收缩压[分别是(55±4)、(54±4)、(56±4)、(55±4)、(53±4)、(53±5)filmHg]明显低于Ⅰ组(P〈0.05,P〈0.01),Ⅲ组和Ⅳ组与Ⅰ组的差异均无统计学意义。结论严重热伤引起低血容量休克中,输注醋酸钠林格注射液更有利于改善心肌功能及顺应性。Objective To study the effects of different fluids on on cardiac function of rabbits with thermal burn-induced shock Methods 40 rabbits were randomly divided into four groups, group Ⅰ : control group (without thermal injury), group Ⅱ 0.9% NaC1 solution, group Ⅲ : lactated Ringer's solution, group Ⅳ: acetated Ringer's injection. The infusion rate was 0.33 ml/kg/% (area percentage of heat injury)/h in 4 h when the thermal injury of rabbit body surface area was 25% to 30%.Cardiac function were measured in each group by working heart preparation in vitro model. Results Cardiac output(CO)[ (85±9), (90±9), ( 102±11 ), (103±10), (99±10),(101±11) ml/min], dp/dt[(1 200±110), (1 350±125), (1 210±100), (1 200±115), (1 150±120), (1 000±95) mmHg/s (1 mm Hg=0.133 kPa)], -dp/dt[(1 000±95), (1 150±100), (1 110±105), (1 100±110), (1 050+105), (l 000±100)mm Hg/s in group H were significantly lower than those in group I (/)〈0.05, P〈0.01 ), and these parameters were improved in group m, but could not return to the levels in group. The parameters in group IV were similar to those in group I (P〉0.05). Stroke work [(21.2+9..3 ), (23.3±2.1), (27.2±2.3), (26.3+2.4), (26.1±3.2), (25.1±2.3) Q·mm Hg·bpm-1] and aortic peak systolic pressure[(55±4), (54±4), (56±4), (55±4), (53±4), (53±5) mm Hg] in group Ⅱwere significantly lower than those of group Ⅰ (P〈0.05, P〈0.01) while these parameters in group Ⅲ and Ⅳ were not different, compared to those of group. Conclusions Compound electrolyte solution infusion can improve cardiac function of rabbits with thermal bum-induced shock.
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