Distribution Of Hemoglobin Level In Hospitalized Delivery Women In A Hospital And Its Relationship With Pregnancy Outcome

Objective:1.Through the retrospective analysis of the clinical data of hospitalized delivery patients in a hospital,to understand the hemoglobin level of pregnant women in the third trimester of pregnancy,and to analyze the incidence of maternal anemia and its influencing factors,so as to provide some reference for clinical work.2.To explore the correlation between hemoglobin level in the third trimester of pregnancy and pregnancy outcome,so as to provide theoretical basis for the management of perinatal pregnant women..Methods:Through the screening of pregnant women(singleton,gestational age≥28 weeks)delivered in our hospital from January 2019 to December 2019,2922 cases were included.Collect the patient’s demographic characteristics:age,nationality,place of residence,education level,family per capita annual income;basic information before pregnancy:previous pregnancy,parturition,pre-pregnancy BMI;laboratory indicators:pre-delivery hemoglobin level.4pregnancy outcome:gestational weeks,mode of delivery,preterm delivery,gestational complications(gestational diabetes mellitus or hypertensive disorder complicating pregnancy),postpartum hemorrhage,premature rupture of membranes,infants less than gestational age or low birth weight,macrosomia.All the data were inputted into the Excel table and statistically analyzed by SPSS 25.0 software.The measurement data were described in the form of mean±standard deviation,and there was significant difference between groups by single factor analysis of variance(P<0.05).Through 2 tests,there was statistical difference between groups(P<0.05).Logistic regression analysis of ordered classified variables was used in multivariate analysis.Results:1.Among the 2922 cases,there were 491 pregnant women with hemoglobin<110g/L,with an incidence of 16.9%(491/2922),and 743pregnant women with hemoglobin≥130g/L(25.4%)(743/2933).2.Univariate analysis showed that there were significant differences in maternal age,education,place of residence,family per capita annual income,pre-pregnancy BMI,previous pregnancy and previous parity between the anemic group and the non-anemic group,but there was no significant difference in nationality and occupation between the anemic group and the non-anemic group.3.Taking the screening results of anemia in the third trimester of pregnancy as dependent variables and the variables with statistically significant differences in univariate analysis as independent variables,a binary logistic regression model was constructed.Age≥40 years old,no higher education,permanent residence in rural areas,pregnancy≥3 times,parity≥2times were the risk factors of anemia in the third trimester of pregnancy.BMI≥18.5kg/m~2before pregnancy was the protective factor of anemia in the third trimester of pregnancy(P<0.05).4.According to the level of Hb,the two groups were divided into anemia group and non-anemia group.There was significant difference in the incidence of hypertensive disorder complicating pregnancy and postpartum hemorrhage between the two groups.There was no significant difference in the incidence of gestational diabetes mellitus,cesarean section,premature rupture of membranes,premature delivery(except iatrogenic),small for gestational age or low birth weight infants,and macrosomia.There was no significant difference in the incidence of gestational diabetes mellitus,cesarean section,premature rupture of membranes,postpartum hemorrhage,preterm delivery(except iatrogenic),less than gestational age or low birth weight infants and macrosomia(p>0.05).When 10g/L was used as the gradient of hemoglobin level,there was significant difference in the incidence of hypertensive disorder complicating pregnancy,cesarean section,premature rupture of membranes,postpartum hemorrhage,preterm delivery(except iatrogenic),and macrosomia(p>0.05).Conclusion:1.The pregnant women who are≥40 years old,do not receive higher education,live in rural areas,have a per capita annual income of less than5000 yuan,BMI<18.5kg/m2 before pregnancy,≥3 pregnancies and≥2parturients are all high risk groups for pregnancy anemia and should be the focus of antenatal examination.2.Anemia in the third trimester of pregnancy is prone to postpartum hemorrhage,so we should pay attention to the anemia of pregnant women during pregnancy,timely correction and early prevention.3.Hypertensive disorder complicating pregnancy may cause the illusion of high hemoglobin level,so great attention should be paid to it.