The Effect of Pressure Exerted on the Maternal Abdominal Wall by the Ultrasound Probe on Fetal Heart Rate
NCT ID: NCT02691884
Last Updated: 2016-03-08
Study Results
The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.
Basic Information
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UNKNOWN
100 participants
OBSERVATIONAL
2016-03-31
2020-04-30
Brief Summary
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Detailed Description
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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.
Conditions
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Study Design
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COHORT
PROSPECTIVE
Study Groups
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Patients before/after Pressure Exertion
100 pregnant patients at term in low risk pregnancies, undergoing a routine cardiotocography, will experience different amounts of manual pressure on their abdomen. The amount of pressure applied will be recorded and the fetal heart rate will be compared before and at the time of maternal abdominal pressure.
maternal abdominal pressure
The fetal cardiac response of either acceleration, deceleration or no change at all to the fetal heart- will be recorded and later on analyzed in reference to the amount of pressure applied from the 20th minute of CTG and for 5 minutes, using the FSR 400 sensor.
Interventions
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maternal abdominal pressure
The fetal cardiac response of either acceleration, deceleration or no change at all to the fetal heart- will be recorded and later on analyzed in reference to the amount of pressure applied from the 20th minute of CTG and for 5 minutes, using the FSR 400 sensor.
Eligibility Criteria
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Inclusion Criteria
* singleton pregnancy
* term (37-41 weeks of gestation)
* consented
* undergoing routine cardiotocography (CTG)
Exclusion Criteria
* recognition of NRFHR pattern on CTG at the ER
* self reporting of reduced fetal movement perception
* unconsented patient
18 Years
FEMALE
Yes
Sponsors
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Meir Medical Center
OTHER
Responsible Party
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Principal Investigators
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Tal Weissbach, MD
Role: PRINCIPAL_INVESTIGATOR
Meir Medical Center, Tel Aviv University
Locations
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Meir Medical Center
Kefar Sava, , Israel
Countries
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Central Contacts
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Facility Contacts
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References
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Ramon y Cajal CL. Umbilical vein and middle cerebral artery blood flow response to partial occlusion by external compression of the umbilical vein (pressure test). J Matern Fetal Neonatal Med. 2002 Aug;12(2):104-11. doi: 10.1080/jmf.12.2.104.111.
Su YM, Lv GR, Chen XK, Li SH, Lin HT. Ultrasound probe pressure but not maternal Valsalva maneuver alters Doppler parameters during fetal middle cerebral artery Doppler ultrasonography. Prenat Diagn. 2010 Dec;30(12-13):1192-7. doi: 10.1002/pd.2648.
Vyas S, Campbell S, Bower S, Nicolaides KH. Maternal abdominal pressure alters fetal cerebral blood flow. Br J Obstet Gynaecol. 1990 Aug;97(8):740-2. doi: 10.1111/j.1471-0528.1990.tb16250.x. No abstract available.
Alpert Y, Ben-Moshe B, Shvalb N, Piura E, Tepper R. The Effect of the Pressure Exerted on the Maternal Abdominal Wall by the US Probe on Fetal MCA Peak Systolic Velocity. Ultraschall Med. 2017 Jan;38(1):44-50. doi: 10.1055/s-0035-1553332. Epub 2015 Sep 30.
Other Identifiers
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0149-14-MMC
Identifier Type: -
Identifier Source: org_study_id
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