STI Flashcards
What bacteria causes chlamydia and is it gram positive or negative?
chlamydia trachomatis
gram negative
what is the most common STI in the UK and what is it a common cause of?
chlamydia
infertility
Risk factors for chlamydia
young
sexually active
multiple partners
What % of people with chlamydia are asymptomatic?
50% men
75% females
What does the National Chlamydia Screening programme entail?
everyone under 25 and sexually active to be screened annually for chalmydia or if partner changes
positive re-test 3 months
GUM clinic STI screening list
chalmydia
gonorrhoea
syphilis - blood
HIV - blood
2 types of swabs used
charcoal swabs
NAAT swabs
What do charcoal swabs allow for?
microscopy
culture
sensitivities
transport medium - charcoal swab
amies transport medium
keep microorganisms alive
What does microscopy entail?
gram staining
What can charcoal swabs be used for?
endocervical swabs
high vaginal swabs
What can charcoal swabs confirm?
bacterial vaginosis candidiasis gonorrhoea trichomonas vaginalis group B strep
What do NAAT detect?
DNA or RNA
What STIs use NAAT?
chlamydia
gonorrhoea
What can NAAT be performed on?
vulvovaginal swab
endocervical swab
first catch urine sample
What can NAAt be performed on - men
first catch urine
urethral swab
Rectal and pharyngeal NAAT swabs
chlamydia in rectum or throat
anal or oral sex
After gonorrhoea is demonstrated on NAAT what is done next?
endocervical charcoal swab
microscopy, culture, sensitivities
Who to consider chlamydia in - women
sexually active abnormal discharge pelvic pain abnormal vaginal bleeding painful sex painful urination
Who to consider chalmydia in - men
urethral discharge or discomfort
painful urination
epididymo-orchitis
reactive arthritis
Examination findings
Pelvic or abdominal tenderness
cervical motion tenderness
inflamed cervix
purulent discharge
First line treatment - uncomplicated chlamydia
doxycycline 100mg 2 daily for 7 days
When is doxycycline CI?
breastfeeding and pregnancy