乙型肝炎病毒宫内传播的危险因素

【目的】研究乙型肝炎病毒宫内传播的危险因素。【方法】对87例乙肝表面抗原阳性孕妇采集脐血行乙肝标志物、PCR-HBV-DNA检测，孕妇产后1～4d内取静脉血进行乙肝标记物检测。【结果】脐血PCR-HBV-DNA阳性1例占1.2%(1/86)。母血HBsAb、HBeAg、HBeAb、HBcAb的宫内感染的危险度（OR）分别为0.697（0.586～0.786）、50.792（13.082～197.204）、0.103（0.032～0.338）、2.261（0.587～8.712）。母血HBeAg阳性(含HBcAb阳性)组的脐血HBsAg阳性百分数（31.0%）、HBeAg阳性百分数（72.4%）显著高于HBsAg阳性组（分别为3.92%，3.92%）。性别与是否宫内感染无显著相关，母血HBeAg与脐血HBsAg特别是HBeAg显著相关。【结论】孕妇血中HBeAg阳性是胎儿宫内感染的危险因素；新生儿性别与宫内感染无关。

Risk Factors of HBV Intrauterine Transmission

【Objective】 To study the risk factors of Hepatitis B Virus intrauterine transmission. 【Method】 Cordal blood from 87 HBV carrier's newborns was tested for HBV markers and PCR-HBV-DNA. Maternal venous blood po stpartum was tested for HBV markers. 【Results】 HBV-DNA positive rate of corda l blood is 1.2%(1/86). Odds Ratio(OR) of positive maternal HBsAb, HBeAg, HBeAb and HBcAb for intrauterine infection are 0.697(0.586～0.786), 50.792(13.082 ～197.204), 0.103(0.032～0.338) and 2.261(0.587～8.712), respectively. Co rdal HBsAg positive rate of maternal HBeAg positive group was significantly high er than that of only HBsAg positive group (31.0% vs 3.92%), so was cordal HBeA g positive rate (72.4% vs 3.92%). Maternal HBeAg was significantly correla ted with cordal HBsAg, especially HBeAg. Newborn sex wasn′t correlated with intraut erine infection. 【Conclusion】 Positive maternal HBeAg was one risk factor of i ntrauterine HBV infection. Newborn sex wasn′t correlated with intrauterine infe ction.