Maternal Uterine Artery Doppler Study

Obstetrix Medical Group

Status: Completed

Conditions: Maternal-Fetal Exchange

Treatments: Other: Any patient eligible for an Ultrasound greater than or equal to 18 weeks gestation without a fetal or uterine anomaly.

Study type: Observational

Funder types: Industry

Identifiers

NCT01698957

UA Doppler 2012

Details and patient eligibility

About

The purpose of this study is to detect if adding resistance to maternal blood flow from the arm will help increase the blood flow through the uterine arteries to the placenta and the baby.

Full description

In the setting of uteroplacental insufficiency, there is little that can be done to increase blood flow through the uterus and placenta. Historically, women with growth restricted fetuses or oligohydramnios have been placed on bed rest. Unfortunately, this treatment modality has met with only limited success. Cardiologists have long recognized the simple act of making a fist or otherwise occluding blood flow through a limb dramatically increases a person's peripheral vascular resistance. If maternal peripheral resistance can be increased, perhaps the increased differential between the maternal peripheral vascular resistance and that of the uteroplacental unit will increase flow through the uterus and placenta.

Enrollment: 52 patients

Sex: Female

Ages: 18 to 50 years old

Volunteers: Accepts Healthy Volunteers

Inclusion criteria

• Pregnant women greater than or equal to 18 years old
• Able to speak and read English
• Have a singleton pregnancy greater than or equal to 18 weeks gestation

Exclusion criteria

• Multiple gestation
• Less than 18 weeks gestation
• Uterine anomalies
• Fetal anomalies
• Preeclampsia
• Hypertension
• Inability to have BP cuff on left arm

Trial design

52 participants in 1 patient group

UA Doppler Velocimetry

Description:

Any patient eligible for an Ultrasound greater than or equal to 18 weeks gestation without a fetal or uterine anomaly.

Treatment:

Other: Any patient eligible for an Ultrasound greater than or equal to 18 weeks gestation without a fetal or uterine anomaly.