Acetaminophen Transfer Across the Placenta and the Assessment of Fetal Well-being
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ClinicalTrials.gov Identifier: NCT01211912 |
Recruitment Status :
Completed
First Posted : September 30, 2010
Last Update Posted : September 1, 2014
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This study has two aims:
- to evaluate placental transfer of acetaminophen from mother to baby transplacentally given from 30 minutes to 24 hours prior to cesarean delivery (34 patients)
- to understand the impact of maternal acetaminophen use on fetal movement and breathing (20 patients)
Condition or disease | Intervention/treatment | Phase |
---|---|---|
Fetal Testing Transplacental Transfer of Acetaminophen | Drug: Arm 1 (20 patients) Drug: Arm 2 (34 patients) | Phase 1 |
Study Type : | Interventional (Clinical Trial) |
Actual Enrollment : | 56 participants |
Allocation: | Non-Randomized |
Intervention Model: | Single Group Assignment |
Masking: | None (Open Label) |
Primary Purpose: | Basic Science |
Official Title: | Acetaminophen Transfer Across the Placenta and the Assessment of Fetal Well-being |
Study Start Date : | September 2010 |
Actual Primary Completion Date : | December 2011 |
Actual Study Completion Date : | December 2011 |

Arm | Intervention/treatment |
---|---|
Experimental: Arm 1 (20 patients)
Pregnant women will be given a single dose of 1000 mg of acetaminophen orally after a baseline ultrasound and 60 minutes before a repeat ultrasound.
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Drug: Arm 1 (20 patients)
Acetaminophen 1000 mg by mouth once
Other Name: Tylenol |
Experimental: Arm 2 (34 patients)
Pregnant women will be given a single dose of 1000 mg of acetaminophen orally 30 minutes to 24 hours before a scheduled cesarean section.
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Drug: Arm 2 (34 patients)
Acetaminophen 1000 mg by mouth once
Other Name: Tylenol |
- Maternal and neonatal serum acetaminophen level [ Time Frame: Time Frame: 30 minutes to 24 hours post administration ]Pregnant women will be given 1000 mg of acetaminophen orally and have both maternal and neonatal serum acetaminophen levels checked at the time of cesarean section 30 minutes to 24 hours after administration.
- Fetal breathing and body movements [ Time Frame: Time Frame: 60 minutes ]Pregnant women will have a baseline assessment of fetal breathing and body movements with ultrasound and will then be given 1000 mg of acetaminophen orally. Fetal breathing and body movements will then be reassessed 60 minutes later.

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Ages Eligible for Study: | 18 Years to 44 Years (Adult) |
Sexes Eligible for Study: | Female |
Accepts Healthy Volunteers: | Yes |
Inclusion Criteria
- Pregnant females
- Age 18-44
- Any race
- Any parity
- Singleton Gestations
- Weight between 60-90 kg
Exclusion Criteria
- Acetaminophen Allergy
- Contraindication to Acetaminophen Use
- Chorioamnionitis
- Preeclampsia
- Diabetes Mellitus
- Placental Abruption
- Placenta Previa
- Fetal Anomaly
- Intrauterine growth restriction (IUGR)
- Multiple Gestations
- Maternal Medical Disease
- Acetaminophen use in the last 3 days
- Plan to donate or bank fetal cord blood

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT01211912
United States, Minnesota | |
Mayo Clinic in Rochester | |
Rochester, Minnesota, United States, 55905 |
Principal Investigator: | Brian C Brost, MD | Mayo Clinic |
Responsible Party: | Brian C. Brost, M.D., PI, Mayo Clinic |
ClinicalTrials.gov Identifier: | NCT01211912 |
Other Study ID Numbers: |
10-003283 |
First Posted: | September 30, 2010 Key Record Dates |
Last Update Posted: | September 1, 2014 |
Last Verified: | August 2014 |
Fetal movement Fetal breathing Acetaminophen |
Acetaminophen Analgesics, Non-Narcotic Analgesics Sensory System Agents |
Peripheral Nervous System Agents Physiological Effects of Drugs Antipyretics |