STI tutorial Flashcards
Describe the gram stain of gonococcus?
Gram negative
Intracellular
Diplococci organism
What is the treatment for gonococcal infections in the UK?
IM ceftriaxone
What are the benefits of NAAT testing in place of culture?
Increased sensitivity over culture
Able to test urine specimens
Self-obtained vaginal swabs
What is the main disadvantage of PCR testing for gonorrhoea?
Can’t test for sensitivities and therefore cannot monitor resistance
How long do you have to wait for HIV testing results?
4 weeks
Do you need to test for cure in gonorrhoea?
Yes; in 6 weeks
What is the diagnosis in someone with thick white discharge with intense vulvar itch?
Thrush; candida albicans
What is the treatment for thrush?
Clotrimazole pessary
Oral fluconazole
Is candida sexually transmitted?
No; men can also get thrush though - presents as a balanitis
What is the diagnosis of yellowish vaigal discharge?
Trichomonas vaginalis
Single cells protozoal parasite
What is the treatment for trichomonas vaginalis?
Oral metronidazole
What HSV causes genital herpes?
2
Why can HSV be dangerous?
Can cause herpes simplex encephalitis in neonates
What is the treatment for HSV genital herpes?
Aciclovir
What types of HPV cause genital warts?
6 and 11
What types of HPV cause cervical ca?
16 and 18
What is the treatment for genital warts?
Podophyllotoxin cream
Imiquimod
Cryotherapy
What are the causes for genital ulceration?
Syphilis
Chancroid
What is the tests you can send off for syphilis diagnosis?
PCR; dark brown microscopy
Serum IgG and IgM ELISA
What should you perform if serum IgG and IgM are positive?
IgM; marked or recent untreated infection
TPPA; positive for life in anyone who has or has had syphilis
VDRL; marker of untreated active infection
What is the treatment for syphilis?
Long acting IM penicillin
Do you treat pregnant women with syphilis?
YES; congenital syphilis is v dangerous
Go to the efforts to desensitize penicillin allergic pregnant women so you can give IM penicillin
