The Effect of Pressure Exerted on the Maternal Abdominal Wall by the Ultrasound Probe on Fetal Heart Rate
试验速览
- 阶段
- 不适用
- 入组人数
- 100
- 试验地点
- 1
- 主要终点
- Changes in fetal baseline heart rate, including accelerations and decelerations
研究概览
简要总结
The aim of the study is to assess the change of fetal heart rate in response to the amount of pressure exerted on the maternal abdomen. The amount of pressure will be quantified using an electronic pressure sensor (FSR 400- Round Force Sensor, Interlink).
详细描述
Previous studies have shown a fetal cardiovascular effect to the pressure exerted on the maternal abdomen. Our null hypothesis is that there is a correlation between fetal heart rate changes and pressure exerted on the fetus through the maternal abdomen.
Women at term pregnancy coming for a routine cardiotocography monitor, will undergo 5 minutes of quantified pressure on their abdomen, using the electronic pressure sensor. The amount of pressure will be recorded as well as the fetal heartbeat baseline and changes to the heart rate following the application of pressure.
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
- 是
入选标准
- •over 18 years of age
- •singleton pregnancy
- •term (37-41 weeks of gestation)
- •consented
- •undergoing routine cardiotocography (CTG)
排除标准
- •referred to the ER due to non reassuring fetal heart rate (NRFHR)
- •recognition of NRFHR pattern on CTG at the ER
- •self reporting of reduced fetal movement perception
- •unconsented patient
结局指标
主要结局
Changes in fetal baseline heart rate, including accelerations and decelerations
时间窗: immediately after applying pressure to the maternal abdomen
pressure will be applied after the 20th minute of CTG monitoring and for a total of 5 minutes
次要结局
未报告次要终点