Fetal Blood Flow Response to Partial Occlusion by External Compression

• Conditions: Gestational Age

• Registration Number: NCT01816737
• Lead Sponsor: Meir Medical Center

Brief Summary

Two earlier studies showed measurable fetal hemodynamics changes caused by external pressure induced by te abdominal ultrasound transducer. The investigators would like to study the response of flow in main fetal vessels to different, mild to moderate pressures induced by the abdominal transducer. The pressure induced by the transducer will be measured by a digital computed manometer. The flow chances in fetal vessels will be measured by ultrasound Doppler. Measurements will be taken on different pregnancy weeks, on one occasion in each pregnant woman. Ones without applying transducer pressure (control) and ones after applying mild pressure.

Detailed Description

Not available

Study Timeline

• Status Verified: 2013-03
• Study Start: 2013-03
• Study First Submitted: 2013-03-20
• Study First Submitted QC: 2013-03-21
• Last Update Submitted: 2013-03-21
• Study First Posted: 2013-03-22
• Last Update Posted: 2013-03-22
• Primary Completion: 2013-10

Recruitment & Eligibility

• Status: UNKNOWN
• Sex: Female
• Target Recruitment: 50

Inclusion Criteria

singleton

Exclusion Criteria

multiple gestation

Study & Design

• Study Type: OBSERVATIONAL
• Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
pulsatility index in fetal vessels	at the time of pressure aplication