- ICH GCP
- US Clinical Trials Registry
- Klinisk forsøg NCT02691884
The Effect of Pressure Exerted on the Maternal Abdominal Wall by the Ultrasound Probe on Fetal Heart Rate
Studieoversigt
Status
Betingelser
Intervention / Behandling
Detaljeret beskrivelse
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.
Undersøgelsestype
Tilmelding (Forventet)
Kontakter og lokationer
Studiesteder
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Kefar Sava, Israel, 4428164
- Meir Medical Center
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Deltagelseskriterier
Berettigelseskriterier
Aldre berettiget til at studere
Tager imod sunde frivillige
Køn, der er berettiget til at studere
Prøveudtagningsmetode
Studiebefolkning
Beskrivelse
Inclusion Criteria:
- over 18 years of age
- singleton pregnancy
- term (37-41 weeks of gestation)
- consented
- undergoing routine cardiotocography (CTG)
Exclusion Criteria:
- 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
Studieplan
Hvordan er undersøgelsen tilrettelagt?
Design detaljer
Kohorter og interventioner
Gruppe / kohorte |
Intervention / Behandling |
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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.
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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.
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Hvad måler undersøgelsen?
Primære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
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Changes in fetal baseline heart rate, including accelerations and decelerations
Tidsramme: immediately after applying pressure to the maternal abdomen
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pressure will be applied after the 20th minute of CTG monitoring and for a total of 5 minutes
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immediately after applying pressure to the maternal abdomen
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Samarbejdspartnere og efterforskere
Sponsor
Efterforskere
- Ledende efterforsker: Tal Weissbach, MD, Meir Medical Center, Tel Aviv University
Publikationer og nyttige links
Generelle publikationer
- 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.
Datoer for undersøgelser
Studer store datoer
Studiestart
Primær færdiggørelse (Forventet)
Studieafslutning (Forventet)
Datoer for studieregistrering
Først indsendt
Først indsendt, der opfyldte QC-kriterier
Først opslået (Skøn)
Opdateringer af undersøgelsesjournaler
Sidste opdatering sendt (Skøn)
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidst verificeret
Mere information
Begreber relateret til denne undersøgelse
Andre undersøgelses-id-numre
- 0149-14-MMC
Plan for individuelle deltagerdata (IPD)
Planlægger du at dele individuelle deltagerdata (IPD)?
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