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New wearable band could let pregnant women monitor Baby's heartbeat at home

NCT ID NCT04450251

Knowledge-focused Sponsor: Owlet Baby Care, Inc. Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed This study
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 25, 2026 · Last updated Jun 26, 2026 · Updated 1 time

Summary

This study tested a wearable fabric band that pregnant women wear around their belly to record the baby's heart rate at home. 173 women in the second half of pregnancy used the device overnight. The goal was to see if the band could collect clear fetal ECG readings.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
wearable fabric band with ECG sensors
What this could lead to
If successful, this could lead to a simple, at-home way to monitor fetal heart rate during pregnancy.
What could go wrong
This is an early observational study, not a treatment trial. The device may not be accurate or practical for widespread use.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Participants

173 people

The number who actually took part.

Started

Aug 2018

Finished

May 2023

Lead sponsor

A company

The lead sponsor is a pharmaceutical, biotech, or medical-device company.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Who is studied

Approximately 500 pregnant women 24 weeks gestation and up in the second or third trimester of pregnancy will be screened into the study.

Ages

18 years and older

Sex

Female participants only

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Pregnant woman, 18 years of age and up. * Singleton or twin pregnancy. Exclusion Criteria: * Self-reported substance abuse problems. * Anyone unable or unwilling to give informed consent.

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As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Pregnancy

Contacts and locations

Locations

  • Owlet Baby Care, Inc.

    Lehi, Utah, 84043, United States

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