Effects of Ginaton on cerebral oxygen utilization coefficients and lactate clearance rate in patients with delayed encephalopathy after acute carbon monoxide poisoning / 中国中西医结合急救杂志

ABSTRACT

ObjectiveTo observe the effects of extract of Ginkgo biloba, Ginaton, on cerebral oxygen utilization coefficients (O2UCc) and lactate clearance rate (LCR) in patients with delayed encephalopathy after acute carbon monoxide poisoning (DEACMP).Methods The 196 patients with DEACMP admitted to Harrison International Peace Hospital Affiliated to Hebei Medical University from January 2011 to March 2016 were enrolled, and they were randomly divided into a control group and an observation group, 98 cases in each groups. The control group received routine treatments such as hyperbaric oxygen, measures to prevent and treat cerebral edema, and promote brain cell metabolism, etc routine therapies: while in the observation group, besides the above routine treatments, additionally intravenous drip of Ginaton 70 mg (with 0.9% sodium chloride injection 250 mL added), once a day, for consecutive 2 weeks to complete one therapeutic course. At ambient air, before treatment and 6, 24 and 72 hours after treatment, the O2UCc and LCR and the changes of mini-mental state examination (MMSE) score, clinical efficacy and hospital mortality were observed and compared between two groups. Pearson correlation test was used to analyze the correlations between O2UCc, LCR and MMSE score.Results On the day of admission before treatment, there were no differences in O2UCc, lactate and MMSE score between the two groups (allP > 0.05). At 6 hours, 24 hours after treatment, the levels of O2UCc in observation group were obviously lower than those in control group [6 hours: (40.64±9.50)% vs. (45.78±7.94)%, P = 0.000; 24 hours: (30.51±6.76)% vs. (33.34±8.19)%,P = 0.009], while the levels of LCR were significantly higher than those in control group [6 hours: (14.93±2.27)% vs. (11.45±1.88)%,P = 0.000; 24 hours: (19.86±3.42)% vs. (13.73±2.35)%,P = 0.009]. There were no statistical significant differences in O2UCc and LCR at 72 hours after treatment between the two groups (P > 0.05). The MMSE scores at 6, 24 and 72 hours after treatment in observation group were higher than those in control group (6 hours: 15.52±3.61 vs. 11.60±2.49, 24 hours: 20.05±5.79 vs. 14.85±5.71,72 hours: 23.87±5.96 vs. 18.07±6.97, allP < 0.05). The total effective rate in observation group was significantly higher [77.55% (76/98) vs. 61.22% (60/98),P < 0.05], and the mortality [3.06% (3/98) vs. 10.20% (10/98),P < 0.05] was obviously lower than their own counterparts in control group. The correlation analysis showed that at different time points, the levels of O2UCc were negatively correlated to the corresponding MMSE scores (r6 h = -0.153,r24 h = -0.158, P6 h = 0.032,P24 h = 0.027), and there were positive correlations between the levels of LCR and MMSE scores (r6 h = 0.473, r24 h = 0.242,P6 h = 0.000,P24 h = 0.001) in patients with DEACMP.Conclusions The treatment of Ginaton in patients with DEACMP can effectively elevate the LCR and MMSE score, reduce O2UCc, decrease mortality and improve the prognosis, thus the clinical curative effect is distinct.