Does Antenatal Fetal Head Circumference Predict Anal Sphincter Injury, a Prospective Study
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 80
- 试验地点
- 1
- 主要终点
- Fetal head circumference and position, maternal pelvis, infant weight, maternal weight, length of the second stage, the incidence of sphincter tears as diagnosed by transvaginal ultrasound as well as the incidence of fecal urgency and incontinence.
研究概览
简要总结
The purpose of this study is to see if fetal head circumference can be used as a predictor for who will experience a sphincter laceration while delivering.
详细描述
Even though much work has been invested in trying to identify risk factors that can predict which population will suffer from sphincter tears and other pelvic floor trauma, the epidemiology is still poorly understood. Factors that have been implicated to include operative vaginal delivery, birth weight, and primaparity. Up to this point little focus has been placed on antenatal factors that would help predict and prevent sphincter disruptions. At the time of birth the infant's head is the largest part of the body. Thus, head circumference of the infant may be able to predict which subjects is more likely to suffer from sphincter disruption. Thus, this study aims to determine whether or not fetal head circumference measured antenatally is predictive of pelvic floor trauma.
研究设计
- 研究类型
- Observational
- 观察模型
- Cohort
- 时间视角
- Prospective
入排标准
- 年龄范围
- 18 Years 至 —（Adult, Older Adult）
- 性别
- Female
- 接受健康志愿者
- 否
入选标准
- •Primiparous subjects at least 18 years of age
- •Gestational age greater than or equal to 36 weeks and upto 42 weeks gestation
- •Subjects must have give written informed consent to participate in this study
- •Subjects must be planning to deliver at UCI
排除标准
- •Subjects less than 18 years of age
- •Subjects with a previous delivery
- •Subjects with previous colorectal surgery or hemorrhoidal surgery
- •Subjects with a history of irritable bowel syndrome, ulcerative colitis, or Crohn's disease
- •Subjects with a history of colon or rectal cancer
- •Gestational age less than 36 weeks
- •Cesarean section
结局指标
主要结局
Fetal head circumference and position, maternal pelvis, infant weight, maternal weight, length of the second stage, the incidence of sphincter tears as diagnosed by transvaginal ultrasound as well as the incidence of fecal urgency and incontinence.
时间窗: 6 Months
次要结局
- The magnitude of the effect of other factors such as maternal obesity, maternal age, duration of labor and pelvimetry on the risk of anorectal lacerations will be examined.(6 Months)