These expectant mothers are usually given tetanus toxoid after the first trimester of pregnancy.
这些孕妇通常在怀孕的头三个月进行破伤风类毒素免疫。

A clinical analysis of induced abortion in women with scarred uterus in second trimester pregngncy
疤痕子宫孕妇中期妊娠引产的临床分析

The second trimester is coming to an end and your body is gearing up for the prenatal homestretch.
怀孕中期马上就要结束了，你的身体正在做产前的最后准备。

The first and third trimesters had significantly higher fatigue levels than did the second trimester.
第一和第三孕期的疲惫显著高于第二孕期。

Reference Ranges of Blood Flow Parameter Ratios of the Normal Second trimester Fetal Middle Cerebral Artery
正常中孕胎儿大脑中动脉血流参数比值的正常值范围

Clinic observation for routine curettage uterine after useing abortion medicine in first trimester pregnancy
早孕药流常规清宫术临床观察

Clinical analysis of40 cases of appplication of bromo geramine to abortion during second trimester pregnancy
新洁尔灭用于中期妊娠引产40例临床分析

Study on the third trimester hemoglobin concentrations and the risk of low birth weight and preterm delivery.
妊娠晚期血红蛋白浓度与早产和低出生体重关系的研究

Influence of late trimester of pregnancy hot compressing and papilla massage on postpartum lactating quantity
妊娠晚期热敷按摩乳头对产后泌乳量的影响

Mothers who are infected may spirochetes to fetuses in the third trimester, resulting in congenital syphilis.
晚期妊娠患者可传播给胎儿，从而使新生儿患先天性梅毒。

Observation on the Therapeutic Effect of Auricular Acupuncture for Induced Labor of Third Trimester of Pregnancy
耳针用于妊娠晚期引产疗效观察

E. Second trimester education. Discomforts include backache, round ligament pain, constipation, and indigestion.
中孕教育。不适感包括背痛，圆韧带疼痛，便秘及消化不良。

Application of mifepristone plus misoprotol for induced abortion of the first and the second trimester of pregnancy
米非司酮配伍米索前列醇在早中孕引产的应用

Periodic reassessment of serum creatinine and quantitative testing for urine protein is recommended every trimester.
妊娠早中晚期都应周期性评价血肌酐和尿蛋白定量。

Results Most fetal anomalies of multiparous pregnancy detected by ultrasonography in the second trimester gestation.
结果多数异常多胎妊娠可在妊娠中期超声检查发现。

Ultrasonic Differential Features Between Interstitial Tubal Pregnancy and Uterine Cornual Pregnancy in Early Trimester
孕早期间质部妊娠与宫角部妊娠超声表现特点与鉴别

Objective To evaluate the clinical value of standardized ultrasound screening for fetal abnormality in second trimester.
目的探讨规范化中孕期超声筛查胎儿畸形的临床价值。

Analysis on Down syndrome screening by dot immunogold filtration assay and enzyme linked immunosorbent assay in9554 cases in second trimester
孕中期应用金标法和酶联免疫法筛查唐氏综合征9554例分析

Significance of Color Doppler Sonography Determining Scar Thickness of Lower Uterine Segment Scar during Late Trimester of Pregnancy in Trial of Vaginal Delivery.
彩超检测妊娠晚期子宫下段瘢痕厚度对阴道试产的意义