STI

Question 1

What are the risk factors for STI?

Answer 1

Multiple partners (two or more in the last year).
Concurrent partners.
Recent partner change (in past 3mths).
Non-use of barrier protection.
STI in partner.
Other STI.
Younger age (particularly aged ≤ 25yrs).
Involvement in the commercial sex industry.
Men who have sex with Men

Question 2

Commonest bacterial STI in the UK?

Answer 2

Chlamydia

Question 3

Symptoms of Chlamydia?

Answer 3

Dysuria
Vaginal discharge
Irregular bleeding (IMB or PCB)
70% asymptomatic

Question 4

Complications of Chlamydia infection?

Answer 4

PID
Fitz-Hugh Curtis Syndrome
Tubal infertility
Risk of ectopic pregnancy
Reactive arthritis (especially in men)

Question 5

Neonatal complications of chlamydia infection during pregnancy?

Answer 5

1. Ophthalmia neonatorum (presents within 1st month of life) –> Tx: Erythromycin 50mg/kg
2. Neonatal pneumonia (atypical)

Question 6

Investigations for chlamydia?

Answer 6

[1st line] High vaginal swab –> For NAAT (Note: Chlamydia is hard to grow on media as obligate anaerobe)

[2nd line] First-pass urine

Question 7

Treatment for chlamydia in both pregnancy and normal?

Answer 7

Normal:
1) Doxycycline 100mg BD for 7 days

Pregnancy:
1) Azithromycin 1 g orally for one day, then 500mg orally once daily for two days

Question 8

Some causes of non-gonoccocal urethritis?

Answer 8

Chlamydia
Trichomonas
Mycoplasma genitalium
HSV