A comparative study assessing the efficacy and acceptability of anorectal swabs for antenatal GBS screening

作者：Law Kenneth S K^*; Parmar Priya; Gregora Michael; Abbott Jason

来源：Journal of Medical Screening, 2013, 20(1): 46-48.

DOI：10.1177/0969141313482305

Objectives To assess women's perception of pain and acceptability of low vaginal swab (LVS) and anorectal swab (ARS) for antenatal screening for Group B Streptococcus (GBS), and to compare the detection rate between these tests.
Methods Separate LVS and ARS were collected at the 36-week antenatal visit, either by the patient herself or by her clinician. Acceptability and pain were evaluated on a Likert scale using a standardised questionnaire.
Results A total of 278 women were recruited, with a median gestation of 36.3 weeks (IQR 36-37). Of these women, 96% undertook specimen self-collection. The overall prevalence of colonisation was 64/278 (23%); 52 women had positive LVS results (18.7%), and an additional 12 (5.5%; 95% CI 2.5-8.5) were negative on LVS but positive on ARS. Most women rated LVS (99%) and ARS (92%) to be either 'pain-free' or causing 'mild discomfort', and found the LVS (90%) and ARS (84%) to be either 'totally acceptable' or 'somewhat acceptable'.
Conclusions The addition of an ARS resulted in an enhanced GBS positive rate, and most women found the test acceptable.

• 出版日期2013
• 单位河北医科大学