Rapid Detection of Group B Strep- 35-37 Week Study
2015年12月14日 更新者:Mark Pearlman、University of Michigan
Rapid Detection of Group B Streptococcus Using a Bedside Microfluidics Device: 35-37 Week Study
The purpose of this study is to determine whether a rapid bedside diagnosis of Group B Strep growing in the vagina and rectum can be performed with similar success to the routine culture.
研究概览
地位
撤销
条件
详细说明
Early Onset Group B Strep (GBS) neonatal infections is one of the leading infections in newborns, nearly all of which are acquired by vertical transmission at the time of childbirth.
Most cases can be prevented by identifying women who are colonized with GBS in the vaginal-rectal area and giving these colonized women prophylactic antibiotics in labor.
About 15 -20% of women are colonized and nearly all of these women are asymptomatic.
Because it takes up to 48 hours to obtain culture results, it is currently recommended to perform cultures in the clinic about 3 - 5 weeks prior to their due date and then prophylaxing those women colonized with GBS with antibiotics when they come in to labor.
There are several downsides to this strategy.
All women who present with preterm labor are treated until culture results become available (overtreatment), women who go into labor while waiting for culture results are all treated (overtreatment), prior studies have shown 33% of women are positive at 35 weeks, but negative at birth (overtreatment) and 10% are negative at 35 weeks and positive at birth (undertreatment), lost or missing culture results (over- or undertreatment).
Using microfluidics and fluorescent PCR, a new test can identify GBS reliably in 30 to 45 minutes in vitro.
This study proposes to evaluate the clinical performance (sensitivity, specificity, positive and negative predictive value) of the microfluidic rapid GBS technique in selected women presenting at 35 - 37 weeks to antenatal clinics at the University of Michigan compared to standard culture.
研究类型
观察性的
联系人和位置
本节提供了进行研究的人员的详细联系信息,以及有关进行该研究的地点的信息。
学习地点
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Michigan
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Ann Arbor、Michigan、美国、48109
- University of Michigan Hospital
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参与标准
研究人员寻找符合特定描述的人,称为资格标准。这些标准的一些例子是一个人的一般健康状况或先前的治疗。
资格标准
适合学习的年龄
18年 及以上 (成人、年长者)
接受健康志愿者
是的
有资格学习的性别
女性
取样方法
非概率样本
研究人群
Patients 18 years or older who present for prenatal cultures in clinic at 35-37 weeks.
描述
Inclusion Criteria:
- Women 18 years of age or older
- Mentally capable of giving informed consent
- Presentation for regularly scheduled 35-37 week cultures
Exclusion Criteria:
- Inability to give informed consent
- Evidence of ruptured membranes by clinical or laboratory criteria
- Use of any antibiotic within the previous 7 days
学习计划
本节提供研究计划的详细信息,包括研究的设计方式和研究的衡量标准。
研究是如何设计的?
设计细节
合作者和调查者
在这里您可以找到参与这项研究的人员和组织。
调查人员
- 首席研究员:Mark D Pearlman, MD、University of Michigan, Obstetrics & Gynecology
出版物和有用的链接
负责输入研究信息的人员自愿提供这些出版物。这些可能与研究有关。
一般刊物
- Schrag S, Gorwitz R, Fultz-Butts K, Schuchat A. Prevention of perinatal group B streptococcal disease. Revised guidelines from CDC. MMWR Recomm Rep. 2002 Aug 16;51(RR-11):1-22.
- Boyer KM, Gotoff SP. Prevention of early-onset neonatal group B streptococcal disease with selective intrapartum chemoprophylaxis. N Engl J Med. 1986 Jun 26;314(26):1665-9. doi: 10.1056/NEJM198606263142603.
- Yancey MK, Schuchat A, Brown LK, Ventura VL, Markenson GR. The accuracy of late antenatal screening cultures in predicting genital group B streptococcal colonization at delivery. Obstet Gynecol. 1996 Nov;88(5):811-5. doi: 10.1016/0029-7844(96)00320-1.
- Edwards RK, Clark P, Duff P. Intrapartum antibiotic prophylaxis 2: positive predictive value of antenatal group B streptococci cultures and antibiotic susceptibility of clinical isolates. Obstet Gynecol. 2002 Sep;100(3):540-4. doi: 10.1016/s0029-7844(02)02097-5.
- ACOG committee opinion. Prevention of early-onset group B streptococcal disease in newborns. Number 173--June 1996. Committee on Obstetric Practice. American College of Obstetrics and Gynecologists. Int J Gynaecol Obstet. 1996 Aug;54(2):197-205. No abstract available.
- Centers for Disease Control and Prevention (CDC). Laboratory practices for prenatal Group B streptococcal screening and reporting--Connecticut, Georgia, and Minnesota, 1997-1998. MMWR Morb Mortal Wkly Rep. 1999 May 28;48(20):426-8.
- Centers for Disease Control and Prevention (CDC). Adoption of hospital policies for prevention of perinatal group B streptococcal disease--United States, 1997. MMWR Morb Mortal Wkly Rep. 1998 Aug 21;47(32):665-70.
- Yancey MK, Armer T, Clark P, Duff P. Assessment of rapid identification tests for genital carriage of group B streptococci. Obstet Gynecol. 1992 Dec;80(6):1038-47.
- Walker CK, Crombleholme WR, Ohm-Smith MJ, Sweet RL. Comparison of rapid tests for detection of group B streptococcal colonization. Am J Perinatol. 1992 Jul;9(4):304-8. doi: 10.1055/s-2007-999247.
- Bergeron MG, Ke D, Menard C, Picard FJ, Gagnon M, Bernier M, Ouellette M, Roy PH, Marcoux S, Fraser WD. Rapid detection of group B streptococci in pregnant women at delivery. N Engl J Med. 2000 Jul 20;343(3):175-9. doi: 10.1056/NEJM200007203430303.
研究记录日期
这些日期跟踪向 ClinicalTrials.gov 提交研究记录和摘要结果的进度。研究记录和报告的结果由国家医学图书馆 (NLM) 审查,以确保它们在发布到公共网站之前符合特定的质量控制标准。
研究主要日期
学习开始
2006年7月1日
初级完成 (实际的)
2006年7月1日
研究注册日期
首次提交
2006年5月26日
首先提交符合 QC 标准的
2006年5月26日
首次发布 (估计)
2006年5月29日
研究记录更新
最后更新发布 (估计)
2015年12月15日
上次提交的符合 QC 标准的更新
2015年12月14日
最后验证
2015年12月1日
更多信息
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