Clinical Trial Details
— Status: Withdrawn
Administrative data
NCT number |
NCT04116645 |
Other study ID # |
0251-19-RMB |
Secondary ID |
|
Status |
Withdrawn |
Phase |
|
First received |
|
Last updated |
|
Start date |
November 1, 2020 |
Est. completion date |
October 30, 2024 |
Study information
Verified date |
December 2021 |
Source |
Rambam Health Care Campus |
Contact |
n/a |
Is FDA regulated |
No |
Health authority |
|
Study type |
Observational
|
Clinical Trial Summary
All pregnant women prenatally being followed up or admitted at Rambam HealthCare Campus,
Haifa, Israel are potential participants in the study. If a patient is agreeable, the
nurse/physician/research coordinator will obtain informed consent.
Once informed consent is obtained, the patient can be swabbed for GBS. The swabs will be
obtained at the routine follow-up at the clinic at 30, 32 and 35 weeks' gestation.
If a patient is found to have a positive GBS culture at 35 weeks, she will receive antibiotic
treatment during labour according to the protocol.
GBS swabs taken at delivery will be compared to previous swabs taken at an earlier
gestational age in order to evaluate sensitivity, specificity, positive and negative
predictive values of GBS swabs at each week of gestation and to determine the value of our
primary hypothesis.
Description:
1. All pregnant women prenatally being followed up or admitted at Rambam HealthCare Campus,
Haifa, Israel are potential participants in the study.
2. Most high-risk pregnant women have their routine follow ups every two weeks or less from
the beginning of the third trimester (between 28 and 32 weeks' gestation).
3. The nurse/physician/research coordinator in the clinic will discuss the trial with those
women. If a patient is agreeable, the nurse/physician/research coordinator will obtain
informed consent.
4. Once informed consent is obtained, the patient can be swabbed for GBS.
5. The swabs will be obtained at the routine follow-up at the clinic at 30, 32 and 35
weeks' gestation. Then, they will be handed to the nurse/physician/research coordinator
and transferred to the lab for analysis.
6. Swabs for GBS culture should be obtained, ideally before digital examination or use of
lubricants, from both the lower vagina (vaginal introitus) and rectum (insert swab
through the anal sphincter) to achieve maximum sensitivity. Either two swabs (one for
each site) or a single swab can be used; one swab is more cost saving. The swabs will be
obtained by the patient herself after appropriate instruction as studies have shown
equivalent sensitivity between the healthcare provider and the patient herself20.
7. The swabs should be placed promptly into non-nutrient transport media (eg, Amies or
Stuart's without charcoal) and transported at room temperature (in temperate climates)
or refrigerated. The swabs are then transferred to a selective enrichment broth at a
laboratory experienced in the isolation of GBS, incubated overnight at 37ÂșC, and
subcultured onto blood agar plates. Cultures require 24 to 48 hours to show positive
results. It takes 48 hours to definitively exclude GBS20.
8. The swabs will be kept for seven days, then will be removed by environmental services
for their discard process.
9. A log of all patients who meet all inclusion criteria and agreed to participate in the
trial will be maintained, recording the date and gestational age. GBS swab results will
also be recorded. We will only reveal the results from the 35 weeks' screening to the
main care provider of the patient as part of the common practice. We will not provide
the other screening results, neither to the patient nor to their physician.
10. If a patient is found to have a positive GBS culture at 35 weeks, she will receive
antibiotic treatment during labour according to the protocol.
11. GBS swabs taken at delivery will be compared to previous swabs taken at an earlier
gestational age in order to evaluate sensitivity, specificity, positive and negative
predictive values of GBS swabs at each week of gestation and to determine the value of
our primary hypothesis.