Effect of different levels of MAPP on lung function protection and coagulation function in patients undergoing heart valve replacement surgery
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摘要: 目的 探讨不同改良自体血小板分离(MAPP)量对心脏瓣膜置换手术患者肺功能保护及凝血功能的影响。方法 纳入2019年1月—2023年1月医院住院成人心脏瓣膜病95例患者进行前瞻性随机对照试验。根据随机数字表分成3组:A组(MAPP<10 mL/kg)31例、B组(MAPP为10~15 mL/kg)32例、C组(MAPP>15 mL/kg)32例。比较3组凝血功能及术后72 h内急性肺损伤发生情况。结果 研究过程中剔除各组MAPP分离至目标量前红细胞比容持续<20%者,每组均有30例患者进入研究。与A组比较,B、C组在体外循环结束即刻(L3)时活化部分凝血酶原时间(APTT)明显延长,血浆纤维蛋白原(Fib)浓度升高(P<0.05),但B组和C组L3时APTT、Fib值比较,差异无统计学意义(P>0.05);B组和C组L3、术后1 h(L4)、24 h(L5)时最大血块强度(MA)值均高于A组(P<0.05),但B组和C组L3、L4、L5时MA值比较,差异无统计学意义(P>0.05)。A组术后72 h急性肺损伤发生率为6.67%,B组为3.33%,C组为10.00%。3组急性肺损伤发生率比较,差异无统计学意义(χ2=1.012,P=0.868)。结论 10~15 mL/kg MAPP分离量对改善心脏瓣膜置换手术患者的凝血功能最佳,同时该分离量不会增加急性肺损伤发生率。Abstract: Objective To investigate the effects of different levels of modified autologous platelet-rich plasmapheresis(MAPP) on lung function protection and coagulation function in patients undergoing heart valve replacement surgery.Methods A prospective randomized controlled trial was conducted on 95 adult patients with valvular heart disease admitted to our Hospital from January 2019 to January 2023. According to a random number table, they were randomly divided into three groups: Group A(MAPP < 10 mL/kg) with 31 cases, Group B(MAPP 10-15 mL/kg) with 32 cases and Group C(MAPP>15 mL/kg) with 32 cases. The effect of different levels of MAPP on lung function protection and coagulation function in patients undergoing double valve replacement surgery was analyzed.Results During the study, patients with hematocrit < 20% before MAPP separation to the target volume were excluded, and 30 patients in each group were enrolled in the study. Compared with Group A, Group B and Group C significantly prolonged the activated partial prothrombin time(APTT) and increased plasma fibrinogen(FIB) concentration immediately after the end of cardiopulmonary bypass(L3)(P < 0.05). However, there was no statistical significant difference in APTT and FIB values between Group B and Group C at L3(P>0.05). The maximum blood clot strength(MA) values at L3, 1 hour(L4), and 24 hours(L5) after surgery in Group B and Group C were higher than those in Group A(P < 0.05), but there was no statistical significant difference in MA values between Group B and Group C at L3, L4, and L5(P>0.05). The incidence of acute lung injury at 72 h after operation in group A, B, C was 3.33%, 6.67% and 10.00%. There was no statistical significant difference in the incidence of acute lung injury among the three groups(χ2=1.012, P=0.868).Conclusion The separation amount of 10-15 mL/kg MAPP may be the best for improving coagulation function in the patients undergoing heart valve replacement surgery, and the separation amount would not increase the incidence of acute lung injury.
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表 1 3组患者不同时点凝血功能比较
X±S 组别 例数 PT/s L1 L2 L3 L4 L5 L6 A组 30 12.36±2.67 12.64±2.24 15.52±2.17 14.68±2.34 13.56±2.19 13.52±2.16 B组 30 12.33±2.51 12.91±2.30 15.80±2.21 14.57±2.27 13.48±2.34 13.29±2.13 C组 30 12.40±2.62 12.73±2.28 15.67±2.19 14.64±2.31 13.54±2.26 13.51±2.20 F 0.070 0.109 0.147 0.015 0.009 0.161 P 0.993 0.897 0.863 0.985 0.991 0.852 组别 例数 APTT/s L1 L2 L3 L4 L5 L6 A组 30 33.12±4.18 34.21±4.35 44.06±6.72 42.89±8.33 38.27±6.10 37.25±5.35 B组 30 33.28±4.26 34.67±4.42 49.07±6.14 43.00±7.64 39.00±5.62 37.13±5.55 C组 30 33.30±4.24 34.50±4.38 48.67±6.30 42.93±8.12 38.65±6.00 37.20±5.47 F 0.019 0.089 5.801 0.002 0.116 0.003 P 0.981 0.915 0.004 0.998 0.891 0.997 组别 例数 Fib/(g/L) L1 L2 L3 L4 L5 L6 A组 30 3.24±0.63 3.22±0.54 2.03±0.48 2.69±0.47 2.94±0.44 2.96±0.46 B组 30 3.30±0.60 3.18±0.55 2.61±0.50 2.71±0.45 2.98±0.46 3.00±0.49 C组 30 3.27±0.62 3.20±0.51 2.58±0.47 2.70±0.50 2.97±0.48 3.02±0.50 F 0.093 0.045 12.470 0.013 0.057 0.157 P 0.991 0.956 <0.001 0.987 0.945 0.855 组别 例数 MA/mm L1 L2 L3 L4 L5 L6 A组 30 60.65±5.76 60.47±6.01 46.63±4.32 46.74±4.29 49.39±4.33 55.52±4.58 B组 30 61.20±5.17 60.54±5.87 50.64±4.51 53.52±4.32 55.67±5.01 55.80±4.61 C组 30 60.87±5.54 60.61±5.92 50.51±4.56 53.56±4.44 55.53±4.86 55.73±4.53 F 0.081 0.004 7.817 24.945 17.584 0.027 P 0.922 0.996 0.001 <0.001 <0.001 0.973 注:PT:F组间P组间=0.012/0.988;F时点P时点=8.563/0.004;F组间*时点P组间*时点=0.136/0.873;APTT:F组间P组间=1.661/0.196;F时点P时点=75.183/<0.001;F组间*时点P组间*时点=1.068/0.385;Fib:F组间P组间=3.002/0.055;F时点P时点=34.164/<0.001;F组间*时点P组间*时点=1.810/0.057;MA:F组间P组间=23.958/<0.001;F时点P时点=83.572/<0.001;F组间*时点P组间*时点=3.922/<0.001。 -
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