Trichomoniasis
Canadian Guidelines on Sexually Transmitted Infections - Vaginal Discharge
- Trichomoniasis may be associated with:
premature rupture of membranes (PROM)
preterm birth
low birth weight
HIV transmission
PID
- Treat all cases and their sexual partners regardless of symptoms.
- For metronidazole allergy/intolerance, see Am J Obstet Gynecol 2008;198:370.e1-7 for incremental dosing protocol for metronidazole.
- Some (~5%) metronidazole resistance.
Usual Pathogens
T. vaginalis
Non-Pregnant/Not Breastfeeding Women
| Empiric Therapy | Dose | Duration |
|---|---|---|
| Metronidazole | 500mg PO bid | 7 days |
| Alternative | ||
| Metronidazole | 2g PO | 1 dose |
Failure/recurrence
| Empiric Therapy | Dose | Duration |
|---|---|---|
| Metronidazole | 500mg PO bid or | 7 days |
| 2g PO daily | 3-5 days |
Pregnant/Breastfeeding Women
| Empiric Therapy | Dose | Duration |
|---|---|---|
| Metronidazole | 2g PO | 1 dose |