The influence of different types of cardioplegic solutions on homeostasis during open heart surgery / Монголын Анагаах Ухаан

ABSTRACT

BackgroundOpen cardiac surgery in CPB condition has increased dramatically in the recent 5 years. Therefore,multidisciplinary researches are needed on this new technological method. The surgical results andperioperative complications depends on keeping normal level of homeostasis parameters during CPBin the open heart surgery.Materials and MethodsTo study the influence of blood cardioplegic and Del Nido’s solution on homeostasis duringcardiopulmonary bypass, we concluded retrospective sample survey using CPB reports from 535 patients,who underwent cardiac surgery with CPB between 2008 and 2012, in 3rd Hospital’s cardiovascularsurgery department.We calculated average parameters of homeostasis, and studied an aortic cross clamp, CPB time,hemodilution and heart recovery process, on three stages of the surgery.We did comparative study on 21 cases of children, who went under congenital heart disease surgery;using Del Nido’s and blood cardioplegic solution.ResultIn recent 5 years, artery blood indicators were pH=7.45±0.06, paCO2=28.8±5.86 mm.Hg,paO2=398.3±99.33 mm.Hg, BE=-4.15±2.51 mmol/l, HCO¯3=20.57±2.18 mmol/l, Ht=28.15±5%,K+=4.12±0.87 mmol/l and Na+=140±3.22 mmol/l during open cardiac surgery in CPB condition(n=535).In case group (n=21), these indicators were pH=7.33±0.09, paCO2=37.49±12.11 mm.Hg,paO2=465.76±77.54 mm.Hg, BE=-6.2±2.78 mmol/l, HCO¯3=20.44±2.46 mmol/l, Ht=27.38±5.12%,K+=3.65±0.46 mmol/l and Na+=141.22±2.64 mmol/l. In control group (n=21), above results werepH=7.40±0.07, paCO2=28.52±6.34 mm.Hg, paO2=394±88.92 mm.Hg, BE=-5.52±2.37 mmol/l,HCO¯3=18.84±2.39 mmol/l, Ht=27.66±3.52%, K+=3.86±0.66 mmol/l and Na+=141.2±3.22 mmol/l.Conclusions:1. When acid and alkaline balance was normal during CPB, hyperoxia and hypocapnia are appearedthrough gas analysis (p=0.0001). Metabolic acidity and hyperoxia showed up in the case group, whohad used Del Nido’s solution (p=0.0001).2. As the beginning of CPB, patient’s hematocrit is reduced by 10.26% (p=0.0001). The influences ofboth Del-Nido and blood cardioplegic solutions are the same on hemodilutes (p=0.26).3. While blood cardioplegic solution is used, heart is refreshed with 80.3% sinusial rhythm(p=0.0001).4. Aortic cross clamp time and increases repetition of cardioplegic solutions are correlated with cardiacrecovery time positively (r=0.445, p=0.0001, n=520).