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Can a simple tape measure make blood pressure readings more accurate in pregnancy?

NCT ID NCT04012151

Knowledge-focused Sponsor: KK Women's and Children's Hospital 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 This study
Running, but no longer taking on new participants.
Completed
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Aug 14, 2026 · Last updated Aug 14, 2026

Summary

This study looks at whether measuring the arm or finger can help choose the right blood pressure cuff size for pregnant women. Accurate blood pressure readings are vital during pregnancy and childbirth, but the current method of sizing cuffs may not always be correct. Researchers will measure the arms and fingers of 300 pregnant women in their third trimester to see which measurement best predicts the need for a non-standard cuff size. The goal is to improve blood pressure monitoring for safer care.

What this could mean

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

Active substance
Physical measurement of arm and finger dimensions, and cuff size fitting
What this could lead to
If arm or finger measurements predict cuff size better than current methods, it could improve blood pressure accuracy in pregnant women, leading to better monitoring and care.
What could go wrong
This is an observational study, so it won't directly test a treatment. The findings may not apply to all populations or settings, and the best predictor may not be simple to use in practice.

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

300 people

The number who actually took part.

Started

Jul 2019

Expected to finish

Dec 2027

An estimate. End dates often move.

Lead sponsor

A government agency

The lead sponsor is a government body.

Who can take part

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

Who is studied

Pregnant women in Singapore

Ages

21 to 50 years

Sex

Female participants only

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

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: * American Society of Anaesthesiologists physical status 1 or 2 (ASA 1 or 2) parturients at 32 or more weeks of gestation * Multiparous or nulliparous; * Age 21-50 years old; * Undergoing Caesarean section in our institution. Exclusion Criteria: * Emergent Caesarean section such that consent and measurements cannot be taken.

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Conditions

The condition(s) this trial relates to.

hypertension, pregnancy-induced

As listed by the trial registrant

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

Hypertension, pregnancy induced

Contacts and locations

Locations

  • KK Women's and Children's Hospital

    Singapore, 229899, Singapore

More trials for these conditions

Other studies related to the condition(s) this trial covers.