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【Objective】 To explore the changes of blood routine, biochemical indexes and coagulation indexes of voluntary blood donors after COVID-19 vaccination, so as to provide a scientific basis for blood donation strategy and to ensure blood safety. 【Methods】 From March to August 2021, 55 blood donors who had received COVID-19 vaccination were sampled at the 2nd, 4th and 8th weeks after vaccination for blood routine, biochemical and coagulation indexes testing. The changes were analyzed. 【Results】 At the second week after vaccination, abnormal blood routine indicators occurred 16(5.82%) occasions, abnormal biochemical indicators 159(36.14%) occasions; at the 4th week after vaccination, abnormal blood routine indicators 14(5.10%) occasions and abnormal biochemical indexes 151(34.32%) occasions. There was no difference in blood routine and biochemical indexes before and after vaccination(P>0.05). Among the coagulation indexes, the incidence of abnormal increase of FⅧ activity at the 2nd, 4th and 8th weeks after vaccination were 34.5%(19/55), 40%(22/55) and 50.9%(28/55), respectively. The the incidence of abnormal increase of TT were 3.6%(2/55), 7.2%(4/55) and 21.8%(12/55), respectively. Both TT and FⅧ activity had a tendency of increasing(P<0.05), APTT had an decreasing trend(P<0.05), and FIB content took on dynamical changes(P<0.05). 【Conclusion】 The blood indicators of blood donors after receiving COVID-19 vaccination are almost within the normal reference values. They can donate regularly according to the required interval, which may help to improve the potential transient changes of coagulation function.
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OBJECTIVE：To stud y the effects of different processed products of Whitmania pigra on hemorheology and coagulation indexes in acute blood stasis model rats. METHODS ：SD rats were randomly divided into blank group ，model group ， aspirin group ，W. pigra hang-dried product low- ，medium- and high-dose groups ，W. pigra talcum powder-ironed product low- ， medium- and high-dose groups ，W. pigra wine bran-processed product low- ，medium- and high-dose groups ，with 6 rats in each group. Except for blank group ，other groups received subcutaneous injection of epinephrine hydrochloride and ice water bath for 15 d to induce acute blood stasis model. From the 8th day of modeling ，rats in aspirin group were given aspirin 0.2 g/kg intragastrically. Rats in each dose group of W. pigra processed products were given relevant medicine 0.35，1.4，3.5 g/kg intragastrically（calculated by crude drug ）. Rats in blank group and model group were given constant volume of normal saline intragastrically， once a day ， for consecutive 8 days. Hemorheology indexes as whole blood viscosity （high， medium and low shearrate ），plasma viscosity ，erythrocyte com deformation index ，erythrocyte aggregation index ，hematocrit， and blood coagulation indexes as prothrombin time （PT）， mail：wcl19960125@163.com activated partial prothrombin time （APTT），thrombin time （TT）were determined. RESU LTS：Compared with blank group ，whole blood viscosity under different shear rates ，plasma viscosity ， erythrocyte aggregation index and hematocrit of model group were increased significantly ，while erythrocyte deformation index was significantly decreased ，PT，TT and APTT were significantly shortened （P＜0.01）. Compared with model group ，whole blood viscosity under different shear rates ，plasma viscosity ，erythrocyte aggregation index and hematocrit of aspirin group and W. pigra hang-dried product ，talcum powder-ironed product ，wine bran-processed product high-dose groups were decreased significantly ， while erythrocyte deformation index were significantly increased ，and PT （only W. pigra talcum powder-ironed products high-dose group），APTT（except for W. pigra hang-dried products high-dose group ）and TT were prolonged significantly. The whole blood viscosity of W. pigra hang-dried product medium-dose group under low shear rate ，and those of W. pigra talcum powder-ironed product low-dose ，wine bran-processed product medium-dose groups under low and medium shear rates were decreased significantly. Erythrocyte deformation index of W. pigra talcum powder-ironed product medium-dose group was increased significantly ，while erythrocyte aggregation index was decreased significantly ，and PT ，TT were prolonged significantly. APTT of W. pigra hang-dried product medium-dose group was prolonged significantly. Hematocrit of W. pigra wine bran-processed product low-dose group was decreased significantly （P＜0.05 or P＜0.01）. CONCLUSIONS ： W. pigra hang-dried， talcum powder-ironed and wine bran-processed product can effectively improve hemorheology indexes and prolong blood coagulation time.
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Objective To explore the new clinical significance of these routine test indexes and find the early biomarkers for predicting hypertension disorder complicating pregnancy(HDP) by the comparative analysis between pregnant women with HDP and normal pregnant women before 20 weeks,including biochemical,blood coagulation and blood routine indexes.Methods A case-control study was conducted to review the clinical data of pregnant women who were undertaken prenatal examination and delivered in Guangzhou Women and Children's Medical Center from 2012 to 2016.The pregnancy were divided into HDP group and control group according to the gestational week and age.Analyzed the related test indexes before 20 weeks of pregnancy.The two groups variables were analyzed by Kolmogorov-Smirnov for normal distribution.Approximate measurement data of normal distribution were mean± standard deviation (x± s) for statistical description,while the data of the skewed distribution was median and percentile[M(P25～P75)]for statistical description.The diagnostic value was analyzed by logistic regression equation and receiver operating characteristic curves (ROC).Results The level of biochemical indexes (AST,γ GT and UA) of HDP group was significantly higher thanthe normal group (t=2.50,3.34,4.56,P＜ 0.05).Meanwhile the level of blood indexes (RBC,PLT and HCT) of HDP group was significantly higher than the normal group (t=2.89,4.51,3.29,all P＜0.01).Other indicators of two groups (ALT,TBIL,Cr,Urea,PT,APTT,TT,FIB and HGB) were not significantly different (t=0.25～ 1.85,all P＞0.05).Then the logistic regression model equation was Y=-5.497+0.010 * PLT+0.043 * γ-GT+0.007 * UA+0.045 * AST.The area under ROC curve (AUC) was 0.746 for the combination of the four indexes.The combination resulted in a higher sensitivity of 0.818 and specificity of 0.523.Conclusion Before 20 weeks of gestation,compared with normal group,liver and kidney function in patients with HDP and high blood coagulation state was damaged.Can by combined detection of AST,UA,γ-GT and PLT index,early prevention and diagnosis of gestational hypertension,effective intervention measures taken as soon as possible to improve the prognosis of pregnancy.
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OBJECTIVE:To explore the effect of dabigatran etexilate on coagulation indexes and safety of elderly patients with persistent atrial fibrillation. METHODS:52 elderly patients with persistent atrial fibrillation were randomly divided into obser-vation group and control group by random number table,26 cases in each group. Creatinine clearance rate in observation group was higher than 30 ml/min,110 mg Dabigatran etexilate capsule was orally given,bid;when 15-30 ml/min,55 mg capsule was orally given,bid. Control group orally received Warfarin sodium tablet with initial dose of 2.5 mg,qd,according to international normal-ized ratio (INR) after 3-5 days till maintained in 2.0-3.0. After 3 months,coagulation indexes [prothrombin time (PT),activated partial thromboplastin time (APTT),thrombin time (TT),INR,platelet count (PLT),fibrinogen (FIB)] before and after treat-ment,incidences of clinical events (cerebral embolism,cerebral hemorrhage,fatal bleeding,the remaining parts of embolism, death)and adverse reactions in 2 groups were compared. RESULTS:There was no significant difference in PT,APTT,TT,PLT and FIB between 2 groups before treatment(P>0.05);after treatment,PT and INR in 2 groups significantly increased,and obser-vation group was obviously better than control group,the difference was statistically significant(P0.05);the incidence of remaining parts of embolism,death in observation group significantly lower than control group,the difference was statistically significant(P<0.05). The incidence of adverse reactions in observation group was significant-ly lower than control group,the difference was statistically significant (P<0.05). CONCLUSIONS:Dabigatran etexilate shows good coagulation effect on elderly patients with persistent atrial fibrillation,which can effectively improve PT and INR levels and reduce the incidences of clinical events,with good safety.
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Objective To explore the effect of early anticoagulation therapy on the blood coagulation in patients undergoing splenectomy plus devascularization.Methods Clinical data of 106 patients in Cangzhou Central Hospital from June 2000 to December 2012 were reviewed.Beginning 24 h after surgery,low molecular dextran 500 ml + ligustrazine 160 mg,once a day for 1 week,and after 48 h low molecular heparin calcium at 4 250 U to 4 500 U was given every 12 h for 7 to 14 d.Blood coagulation was tested on day 3,5,7,10 and 14,ultrasound 1-2 times a week was taken for detection of portal venous thrombosis.Results The incidence of portal thrombosis was 7.5％ (8/106).APTT prolonged during 7-14 d.Prothrombin time (PT),thrombin time (TT) and fibrinogen (FIB) decreased,but all the changes were not statistically significant when compared with the normal values(P ＞0.05).Anticoagulant treatment did not cause bleeding complications in this series.Conclusions Postoperative application of low molecular heparin calcium anticoagulant therapy is effective in the prevention of portal thrombosis and safe in terms of coagulation when started early in patients undergoing splenectomy.