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孕产妇和胎婴儿都是脆弱的群体,容易受疾病、有毒物质、意外伤害的威胁。良好的围产期保健是母婴安康的保证,它可以减少妊娠并发症,维系胎儿正常的宫内发育,为安全分娩打下可靠的基础。一位孕妇,从她的末次月经算起,整个孕期为280天,以每7天作为一个妊娠周(孕周),共40个妊娠周。其产前检查的次数大约是8～10次。在不同的妊娠阶段,产前检查的重点有所不同,孕妇要有自我保健意识,不厌其烦地系统进行检查。早孕期是指从受精到妊娠12周末。此阶段出现妊娠反应、择食、食欲不振、恶心、呕吐、进食减少。大约有50%的孕妇在停经40天左右开始出现妊娠反应;有25%的人有恶心、呕吐;3%～40%的孕妇呕吐反应严重,需
Both maternal and fetal infants are vulnerable groups and are at risk of disease, toxic substances and accidental injuries. Good perinatal care is a guarantee of maternal and child health, it can reduce pregnancy complications, to maintain normal intrauterine fetal development, lay a reliable foundation for safe delivery. A pregnant woman from her last menstrual period, the entire pregnancy period of 280 days, every seven days as a pregnancy week (gestational age), a total of 40 weeks of pregnancy. The number of prenatal tests is about 8 to 10 times. In different stages of pregnancy, prenatal examination focus is different, pregnant women have self-care awareness, take the trouble to systematically check. Early pregnancy is from fertilization to 12 weeks of gestation. This phase of pregnancy reaction, choice of food, loss of appetite, nausea, vomiting, eating less. About 50% of pregnant women begin to have pregnancy reaction after about 40 days of menopause; 25% of them have nausea and vomiting; 3% ~ 40% of pregnant women have severe vomiting reaction,