ABSTRACT
Objective To study the mechanism of pulmonary injury and protective effect of modified ultrafiltration on lung function in infant open heart surgery.Methods According to the wishes of parents,40 cases of congenital heart disease were divided into without modified ultrafiltration control group (C) and modified ultrafiltration group (M),and parents signed informed consent.The cardiopulmonary bypass (CPB) was used without ultrafiltration in Group C,while with modified ultrafiltration in group M.The pneumodynamic parameters and C3a,C5a,TXA2,LT were measured at specific time points.Results The static pulmonary compliance (Cstat) and oxygen index (OI) were lower,and alveolar-arteria oxygen difference (AaDO2) was higher after CPB in the two groups(P ＜ 0.05).At T3,T4 and T5 time points,the Cstat and OI in Group M was higher than that in Group C; AaDO2 in Group M was lower than that in Group C (P ＜0.05).The levels of C3a and C5a were lower after CPB in the two groups; levels of TXA2,LT were higher after CPB in the C groups.At T2,T3,T4 and T5 time points,the TXA2 and LT in Group M were lower than that in Group C(P ＜0.05).Conclusions The pulmonary injury in pediatric open heart surgery may be concerned with the the alexin(C3a,C5a) activation and I/R.The level of C3a and C5a was considered earlier index of inflammatory reaction and pulmonary injury.Modified ultrafiltration improves pulmonary function due to elevating coloid osmotic pressure and degrading the plasma level of TXA2,LT.
ABSTRACT
ive] To observe the therapeutic effect of Naoxing Granule (NG) for acute ischemic stroke (AIS) and to explore its mechanism. [Methods] Single-blind controlled trial was applied. Two hundred cases of AIS were randomly allocated to Group A (n = 150, treated with NG) and Group B (n = 50, treated with nimodipine). Therapeutic effect of NG was observed and plasma free radical levels and the ratio of thromboxane A2 (TXA2) and prostaglandin 2 (PGI2) were detected. [Results] The total effective rate was 91.3%and 76.0% , and the remarkably effective rate was 62.0% and 46.0% in Group A and Group B respectively ( P