Prevention of Retained Items iN Childbirth Environment and Surgical Sites (PRINCESS)

January 13, 2026 updated by: The Royal Wolverhampton Hospitals NHS Trust

Prevention of Retained Items iN Childbirth Environment and Surgical Sites- Clinical Usability Study

To evaluate the user confidence in the confirmation of correct counts using a novel device and to assess clinical usability of the device during surgery.

Study Overview

Status

Not yet recruiting

Intervention / Treatment

Detailed Description

Accidentally retained surgical items or swabs are well-recognised errors that result in adverse consequences for patients. This error is one of the commonest "Never Events" - patient safety incidents that are considered preventable. Although uncommon, these incidents can have devastating consequences. Retained surgical items have 70% re-interventions, reaching 80% morbidity and 35% mortality. (Birolini et al, 2016) 1

Swabs or sponges are like small towels that soak up blood and body fluids so that the surgeon can visualise the operating area effectively. Swabs are used in all areas of surgery which include operations on the tummy, chest, limbs. They are also used in the vagina during childbirth, to assess for tears and to minimise blood oozing from the vagina.

The common risk factors for this error are out of hours surgical or childbirth procedures, multiple handovers in the care of the patient, raised BMI (Body Mass Index) and unplanned change to the operative intervention. (Gawande et al, 2003)2 As the name suggests, a 'never event' should never happen. Unfortunately, incidents involving surgical swabs being left behind, particularly during a caesarean section or a perineal repair following a vaginal birth, are still happening despite over 100 years of institutional awareness of the problem and tentative solutions being implemented in clinical practice.

Never-events involving retained surgical swabs are a widespread problem affecting healthcare systems worldwide. It is therefore reasonable to ask the question: why are surgical swabs being left behind and what can be done to prevent this from happening?

Patient safety is a well-known priority for the European commission, WHO and the NHS. Some of the National/International reports highlighting this problem:

  • CQC-Opening the door to change (2018)
  • US Joint Commission report: Preventing unintended retained foreign objects (2019)
  • The Australian Commission on Safety and Quality in Health Care and The New Zealand Health Quality and Safety Commission (2015)
  • Healthcare Safety Investigation Branch (HSIB,UK) investigation I2018/025 (2019)

Study Type

Observational

Enrollment (Estimated)

30

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact Backup

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

Yes

Sampling Method

Non-Probability Sample

Study Population

The participants will be pregnant women during labour.

Staff who work in the operating theatres and are involved in performing swab and instrument counts. Consented to participation after an informed choice.

Description

Inclusion Criteria:

  1. Patients due to undergo surgery at the chosen NHS Trust.
  2. Patients 18 years or older and consented to participation after an informed choice.

Exclusion Criteria:

  1. Under 18 years of age
  2. Emergency surgery

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

Cohorts and Interventions

Group / Cohort
Intervention / Treatment
iCount Device
A novel external device which can count the swabs and surgical tampons used during childbirth in an objective and validated manner.

Designed as single use. Intended purpose - To be used to count swabs and tampons after surgery in an objective manner. This is intended to be used in patients during and just after surgery.

This is a device accessory.

User Feedback Survey

Anonymised feedback data will be collected from 20 staff users about the user experience and usability of the device. This will be conducted with an online survey questionnaire designed with advice from ergonomics experts after an extensive literature review of human factors-ergonomics principles and MHRA guidance about conducting medical device usability

5 staff users will be randomly selected from the consent forms to have semi-structured interviews developed in accordance with qualitative research methodology for medical device usability testing and user experience.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Understanding user experience/usability factors
Time Frame: 12 months
User responses on Likert scale for the various usability factors such as user confidence in the accuracy of counts, functional aspects and ease of use collected with an online software-assisted survey.
12 months
How the device sits within the current system
Time Frame: 12 months
The purpose is to obtain user centred narratives and a rich qualitative data. Semi-structured interviews of staff will be conducted via a virtual platform or in a safe face-to-face manner. These will be recorded with a dictaphone recording device or Microsoft teams auto-transcription
12 months

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Collaborators

Investigators

  • Principal Investigator: Aditi Desai, The Royal Wolverhampton NHS Trust

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Estimated)

June 1, 2026

Primary Completion (Estimated)

June 1, 2027

Study Completion (Estimated)

June 1, 2027

Study Registration Dates

First Submitted

August 20, 2024

First Submitted That Met QC Criteria

August 22, 2024

First Posted (Actual)

August 26, 2024

Study Record Updates

Last Update Posted (Actual)

January 15, 2026

Last Update Submitted That Met QC Criteria

January 13, 2026

Last Verified

January 1, 2026

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 2024SUR130

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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