PERFORMANCE STUDY OF THE AL-SENSE

This is an open-label, comparative, and prospective pivotal study to demonstrate that AL-SENSE can indicate whether wetness sensed by pregnant women may be caused by amniotic fluid leakage rather than by urinary incontinence.

Subjects arriving at the hospital will receive a single AL-SENSE to use until they notice any wetness.

The blinded physician will perform a diagnosis according to the standard diagnostic methods (clinical assessment). The standard diagnostic methods will include the following tests: (1) Pooling test, (2) Ferning test, (3) pH test by pH paper. A positive Pooling test or positive result in both the pH test and the Ferning test is defined as a positive clinical assessment.

Study Overview

• Status: Completed
• Conditions: Amniotic Problems
• Intervention / Treatment: Device: AL-SENSE

Detailed Description

This is an open-label, comparative, and prospective pivotal study to demonstrate that AL-SENSE can indicate whether wetness sensed by pregnant women may be caused by amniotic fluid leakage rather than by urinary incontinence. Subjects arriving at the hospital and reporting unidentified wetness (undetermined whether this is amniotic fluid leakage or urinary incontinence) will receive a single AL-SENSE to use up to 12 hours or until they notice any wetness. The clinician will explain the proper use and handling of the AL-SENSE.

In each case, the blinded clinician will be required to read and record any occurrence of color change of the AL-SENSE 10 minutes after the AL-SENSE removal and to mark if it changes color to blue or to green on the designated form.

The blinded physician (other than the clinician who records the AL-SENSE results) will perform a diagnosis according to the standard diagnostic methods (clinical assessment). The standard diagnostic methods will include the following tests: (1) Pooling test, (2) Ferning test, (3) pH test by pH paper. A positive Pooling test or positive result in both the pH test and the Ferning test is defined as a positive clinical assessment.

In cases where the AL-SENSE shows positive results but the clinical assessment results are negative, reference laboratories, or any other standard procedure will check for the possibility of BV or Trichomonas in addition to the tests noted above.

• Study Type: Interventional
• Enrollment (Actual): 352
• Phase: Phase 3

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years to 55 years (Adult)
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: Female

Description

Inclusion Criteria:

1. Age 18 years or greater.
2. Subject minimum 16 weeks of pregnancy.
3. Who will sign the informed consent form.
4. Who arrive at the obstetric department reporting a feeling of vaginal wetness feeling (undetermined whether this is amniotic fluid leakage or urinary incontinence).

Exclusion Criteria:

1. Subject who has experienced intermittent vaginal bleeding between the 2nd and 3rd trimesters.
2. Subjects that have had sexual intercourse within the last 12 hours.
3. Subject is unable or unwilling to cooperate with study procedures.
4. Subject that has been diagnosed with Bacterial Vaginosis or Trichomonas infection within the last 3 days.

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Diagnostic
• Allocation: N/A
• Interventional Model: Single Group Assignment
• Masking: None (Open Label)

Number of Arms

1

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: AL-SENSE diagnostic pantyliner; AL-SENSE diagnostic pantyliner of amniotic fluid compared with standard clinical diagnosis methods.	Device: AL-SENSE; A diagnostic pantyliner for detection of amniotic fluid leaks compared with standard clinical diagnosis

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
color change of the pantyliner in comparison to standard clinical diagnosis	presence or absence of a blue or green stain on a yellow background as observed by the clinician yielded by the AL-SENSE in addition to the binary clinical diagnosis	10 min

Collaborators and Investigators

• Sponsor: Common Sense
• Investigators: Principal Investigator: Liangkun Ma, MD, Peking Union Medical College Hospital

Study record dates

Study Major Dates

• Study Start (Actual): November 1, 2016
• Primary Completion (Actual): March 1, 2017
• Study Completion (Actual): April 1, 2017

Study Registration Dates

• First Submitted: November 14, 2016
• First Submitted That Met QC Criteria: November 14, 2016
• First Posted (Estimate): November 16, 2016

Study Record Updates

• Last Update Posted (Actual): September 4, 2019
• Last Update Submitted That Met QC Criteria: September 2, 2019
• Last Verified: December 1, 2017

More Information

Terms related to this study

• Other Study ID Numbers: F-7-32.4-5.1

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: No