Enhanced antenatal detection of group B streptococcus colonization
To improve culture methods for the detection of group B streptococcus colonization. This study prospectively compared the standard culture medium, a blood agar plate, to a selective culture medium, Todd Hewitt broth with antibiotics, and compared vaginal culture with rectal culture at the first pren...
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Published in | Obstetrics and gynecology (New York. 1953) Vol. 85; no. 3; pp. 437 - 439 |
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Main Authors | , , |
Format | Journal Article |
Language | English |
Published |
New York, NY
Elsevier Inc
01.03.1995
The American College of Obstetricians and Gynecologists Elsevier Science |
Subjects | |
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Abstract | To improve culture methods for the detection of group B streptococcus colonization.
This study prospectively compared the standard culture medium, a blood agar plate, to a selective culture medium, Todd Hewitt broth with antibiotics, and compared vaginal culture with rectal culture at the first prenatal exam.
Of the 383 vaginal swabs received for evaluation of the two culture media, 78 (20.4%) were positive for group B streptococcus. The detection rates of the blood agar plate method and the Todd Hewitt broth with antibiotics were 64.1 and 97.4%, respectively. Using the Todd Hewitt broth with antibiotics, an additional 94 patients were cultured vaginaHy and rectally. Twenty-nine (30.9%) had positive cultures. The rate of detection was 58.6% for the vaginal culture, 89.7% for the rectal culture, and 100% for both culture sites combined.
These data indicate that culture detection of group B streptococcus can be improved by using both a selective broth medium and a dual vaginal and rectal culture. |
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AbstractList | To improve culture methods for the detection of group B streptococcus colonization.
This study prospectively compared the standard culture medium, a blood agar plate, to a selective culture medium, Todd Hewitt broth with antibiotics, and compared vaginal culture with rectal culture at the first prenatal exam.
Of the 383 vaginal swabs received for evaluation of the two culture media, 78 (20.4%) were positive for group B streptococcus. The detection rates of the blood agar plate method and the Todd Hewitt broth with antibiotics were 64.1 and 97.4%, respectively. Using the Todd Hewitt broth with antibiotics, an additional 94 patients were cultured vaginally and rectally. Twenty-nine (30.9%) had positive cultures. The rate of detection was 58.6% for the vaginal culture, 89.7% for the rectal culture, and 100% for both culture sites combined.
These data indicate that culture detection of group B streptococcus can be improved by using both a selective broth medium and a dual vaginal and rectal culture. OBJECTIVETo improve culture methods for the detection of group B streptococcus colonization.METHODSThis study prospectively compared the standard culture medium, a blood agar plate, to a selective culture medium, Todd Hewitt broth with antibiotics, and compared vaginal culture with rectal culture at the first prenatal exam.RESULTSOf the 383 vaginal swabs received for evaluation of the two culture media, 78 (20.4%) were positive for group B streptococcus. The detection rates of the blood agar plate method and the Todd Hewitt broth with antibiotics were 64.1 and 97.4%, respectively. Using the Todd Hewitt broth with antibiotics, an additional 94 patients were cultured vaginally and rectally. Twenty-nine (30.9%) had positive cultures. The rate of detection was 58.6% for the vaginal culture, 89.7% for the rectal culture, and 100% for both culture sites combined.CONCLUSIONThese data indicate that culture detection of group B streptococcus can be improved by using both a selective broth medium and a dual vaginal and rectal culture. To improve culture methods for the detection of group B streptococcus colonization. This study prospectively compared the standard culture medium, a blood agar plate, to a selective culture medium, Todd Hewitt broth with antibiotics, and compared vaginal culture with rectal culture at the first prenatal exam. Of the 383 vaginal swabs received for evaluation of the two culture media, 78 (20.4%) were positive for group B streptococcus. The detection rates of the blood agar plate method and the Todd Hewitt broth with antibiotics were 64.1 and 97.4%, respectively. Using the Todd Hewitt broth with antibiotics, an additional 94 patients were cultured vaginaHy and rectally. Twenty-nine (30.9%) had positive cultures. The rate of detection was 58.6% for the vaginal culture, 89.7% for the rectal culture, and 100% for both culture sites combined. These data indicate that culture detection of group B streptococcus can be improved by using both a selective broth medium and a dual vaginal and rectal culture. OBJECTIVETo improve culture methods for the detection of group B streptococcus colonization. METHODSThis study prospectively compared the standard culture medium, a blood agar plate, to a selective culture medium, Todd Hewitt broth with antibiotics, and compared vaginal culture with rectal culture at the first prenatal exam. RESULTSOf the 383 vaginal swabs received for evaluation of the two culture media, 78 (20.4%) were positive for group B streptococcus. The detection rates of the blood agar plate method and the Todd Hewitt broth with antibiotics were 64.1 and 97.4%, respectively. Using the Todd Hewitt broth with antibiotics, an additional 94 patients were cultured vaginally and rectally. Twenty-nine (30.9%) had positive cultures. The rate of detection was 58.6% for the vaginal culture, 89.7% for the rectal culture, and 100% for both culture sites combined. CONCLUSIONThese data indicate that culture detection of group B streptococcus can be improved by using both a selective broth medium and a dual vaginal and rectal culture. |
Author | Robinson, Ann Philipson, Elliot H. Palermino, Donato A. |
AuthorAffiliation | Department of Obstetrics and Gynecology and Pathology and Laboratory Medicine, University of Connecticut at Hartford Hospital, Hartford, Connecticut |
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References | Anthony, Eisenstadt, Carter, Kim, Hobel (bib8) 1981; 143 Baker, Clark, Barrett (bib7) 1973; 26 Dillon, Khare, Gray (bib1) 1987; 110 American College of Obstetricians and Gynecologists (bib2) 1992 Regan, Klebanoff, Nugent (bib6) 1991; 77 Abet, Allen, Howell, Wilkinson, Facklam (bib9) 1976; 58 American Academy of Pediatrics Committee on Infectious Disease, Committee on Fetus and Newborn (bib4) 1992; 90 American College of Obstetricians and Gynecologists (bib3) 1993; 37 Baker (bib5) 1977; 136 |
References_xml | – volume: 26 start-page: 884 year: 1973 end-page: 885 ident: bib7 article-title: Selective broth medium for isolation of group B streptococci publication-title: Appl Microbiol contributor: fullname: Barrett – volume: 90 start-page: 775 year: 1992 end-page: 778 ident: bib4 article-title: Guidelines for prevention of group B streptococcal (GBS) infections by chemoprophylaxis publication-title: Pediatrics contributor: fullname: Committee on Fetus and Newborn – volume: 77 start-page: 604 year: 1991 end-page: 610 ident: bib6 article-title: The epidemiology of group B streptococcal colonization in pregnancy publication-title: Obstet Gynecol contributor: fullname: Nugent – volume: 110 start-page: 31 year: 1987 end-page: 36 ident: bib1 article-title: Group B streptococcal carriage and disease: a 6-year prospective study publication-title: J Pediatr contributor: fullname: Gray – year: 1992 ident: bib2 article-title: Group B streptococcal infections in pregnancy publication-title: ACOG Technical Bulletin no. 170 contributor: fullname: American College of Obstetricians and Gynecologists – volume: 58 start-page: 346 year: 1976 end-page: 353 ident: bib9 article-title: Nosocomial transmission of group B streptococci publication-title: Pediatrics contributor: fullname: Facklam – volume: 143 start-page: 761 year: 1981 end-page: 766 ident: bib8 article-title: Genital and intestinal carriage of group B streptococci during pregnancy publication-title: J Infect Dis contributor: fullname: Hobel – volume: 37 start-page: 1 year: 1993 ident: bib3 article-title: Universal antepartum screening for maternal GBS not recommended publication-title: ACOG newsletter contributor: fullname: American College of Obstetricians and Gynecologists – volume: 136 start-page: 137 year: 1977 end-page: 152 ident: bib5 article-title: Summary of the workshop on perinatal infections due to Group B Streptococcus publication-title: J Infect Dis contributor: fullname: Baker |
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Snippet | To improve culture methods for the detection of group B streptococcus colonization.
This study prospectively compared the standard culture medium, a blood agar... OBJECTIVETo improve culture methods for the detection of group B streptococcus colonization. METHODSThis study prospectively compared the standard culture... OBJECTIVETo improve culture methods for the detection of group B streptococcus colonization.METHODSThis study prospectively compared the standard culture... |
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SubjectTerms | Biological and medical sciences Carrier State - microbiology Culture Media - economics Diseases of mother, fetus and pregnancy Female Gynecology. Andrology. Obstetrics Humans Medical sciences Pregnancy Pregnancy Complications, Infectious - microbiology Pregnancy. Fetus. Placenta Prenatal Diagnosis - economics Prenatal Diagnosis - methods Prospective Studies Rectal Diseases - microbiology Streptococcal Infections - microbiology Streptococcus agalactiae - isolation & purification Vaginal Diseases - microbiology |
Title | Enhanced antenatal detection of group B streptococcus colonization |
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