vaginitis-slides-Trichomoniasis课件.ppt

Vaginitis Trichomoniasis Vulvovaginal Candidiasis VVC Bacterial Vaginosis BV Vaginal Environment The vagina is a dynamic ecosystem that contains approximately 109 bacterial colony-forming units. Normal vaginal discharge is clear to white, odorless, and of high viscosity. Normal bacterial flora is dominated by lactobacilli – other potential pathogens present. Acidic environment pH 3.8-4.2 inhibits the overgrowth of bacteria Some lactobacilli also produce H2O2, a potential microbicide Vaginitis Usually characterized by: Vaginal discharge Vulvar itching Irritation Odor Common types Trichomoniasis 15%-20% Bacterial vaginosis 40%-45% Vulvovaginal candidiasis 20%-25% Other Causes of Vaginitis Mucopurulent cervicitis Herpes simplex virus Atrophic vaginitis Allergic reactions Vulvar vestibulitis Foreign bodies Diagnosis of Vaginitis Patient history Visual inspection of internal/external genitalia Appearance of discharge Collection of specimen Preparation and examination of specimen slide Other Diagnostics for Vaginitis DNA probes Cultures Fem Examine Test Card? PIP Activity Test Card? Wet Preps: Common Characteristics Wet Prep: Lactobacilli and Epithelial Cells Vaginitis Differentiation Vaginitis Trichomonas vaginalis Learning Objectives Upon completion of this content, the learner will be able to: Describe the epidemiology of trichomoniasis in the U.S. Describe the pathogenesis of T. vaginalis. Describe the clinical manifestations of trichomoniasis. Identify common methods used in the diagnosis of trichomoniasis. List CDC-recommended treatment regimens for trichomoniasis. Describe patient follow up and partner management for trichomoniasis. Describe appropriate prevention counseling messages for patients with trichomoniasis. Lessons Epidemiology: Disease in the U.S. Pathogenesis Clinical manifestations Diagnosis Patient management Prevention Lesson I: Epidemiology: Disease in the U.S. Incidence and Prevalence Most common treatable STD Estimated 7.4 mil