Gardnerella vaginalis
- gram variable / gram (-)
- beta-hemolytic (HBT agar) / nonhemolytic (BAP)
- causes bacterial vaginosis
Causes Bacterial Vaginosis
- Gardnerella vaginalis
- Prevotella spp.
- Peptostreptococcus spp.
- Porphyromonas spp.
- Mobiluncus spp.
- Mycoplasma hominis
NUGENT SCORING SYSTEM – most accurate means of diagnosing bacterial
vaginosis than culture
| NUGENT SCORING SYSTEM | |||||
Lactobacillus morphotypes (boxy, gram (+) bacilli | Gardnerella & Bacteroides (pleomorphic, gram variable, gram (-), short bacilli) | Mobiluncus morphotypes (curved, gram-variable bacilli) | |||
| Quantity | Points | Quantity | Points | Quantity | Points |
| 4+ | 0 | 0 | 0 | 0 | 0 |
| 3+ | 1 | 1+ | 1 | 1+ to 2+ | 1 |
| 2+ | 2 | 2+ | 2 | 3+ to 4+ | 2 |
| 1+ | 3 | 3+ | 3 | ||
| 0 | 4 | 4+ | 4 | ||
NUGENT SCORING INTERPRETATION
- 0 – 3 – NORMAL VAGINAL MICROBIOTA
- 4 – 6 – INDETERMINATE FOR BACTERIAL VAGINOSIS
- 7 – 10 – BACTERIAL VAGINOSIS
