Sexual health Flashcards
What is the failure rate for male condoms
Perfect use: 2%
Typical use: 16%
What is the failure rate for female condoms
Perfect use: 5%
Typical use: 21%
What is the failure rate for diaphragms
Perfect use: 6%
Typical use: 16%
What is the failure rate for nulliparous cervical cap
Perfect use: 9%
Typical use: 16%
What is the failure rate for parous cervical cap
Perfect use: 20%
Typical use: 32%
What is the mechanism of action of the combined hormonal contraceptives
Inhibition of ovulation
Inhibition of endometrial thickening
Increased thickening of cervical mucus
What happens in the pill-free break for COCP
Fall in hormone concentration
Degradation of endometrium
Menstrual bleeding
What are monophasic pills of COCP
Every pill contains same amount of oestrogen and progesterone
Most common type
What are phasic pills of COCP
Levels of oestrogen and progesterone change throughout cycle
Important to take pills in correct order
What is the contraceptive transdermal patch
A method of combined hormonal contraception
Applied every 7 days for 3 weeks, then a 7 day break for withdrawal bleed
Can be put on arm/abdomen/buttock/back
What is a contraceptive vaginal ring
A form or combined hormonal contraception
Plastic ring, inserted into vagina
Sits in vagina for 21 days, removed for 7 days
Which cancers do combined hormonal contraceptives reduce the risk of
Ovarian
Uterine
Colon
What are the contraindications for combined hormonal contraceptives
BMI >35
Breastfeeding
Smoking and age >35
Hypertension
Family history of VTE
Prolonged immobility
Diabetes with complications
Migraines with aura
Breast cancer
Primary liver tumour
What is the failure rate for COCP
Perfect use: 0.3%
Typical use: 9%
When is POP most commonly used
Where COCP is contraindicated
What are the mechanisms of action of progesterone only contraceptives
Thickening of cervical mucus
Inhibition of ovulation
Thinning of endometrium
What are the cancer risks associated with POP
Reduced risk of endometrial cancer
Increased risk of breast cancer
What are the contraindications for POP use
Current/past breast cancer
Liver cirrhosis/tumour
Low efficacy in <70 kg
Stroke/coronary heart disease
How do POP and progesterone implant affect periods
Irregular pattern
What are the contraindications for progesterone implant
Pregnancy
Unexplained vaginal bleeding
Liver cirrhosis/tumour
History of breast cancer
Stroke/TIA whilst using implant
How long do progesterone only injections last
Depo-provera - 12 weeks
- Deep IM injection
Others between 8 and 13 weeks
What effects does the progesterone only injection have on fertility and periods
Up to a year for fertility to return
A few months for periods to return to normal
What is the failure rate for POP
Perfect use: 0.3%
Typical use: 9%
What is the effectiveness for progesterone only implant
Perfect use: 0.05%
Typical use: 0.05%
What is the effectiveness for progesterone only injection
Perfect use: 0.2%
Typical use: 6%
What is the mechanism of action of the intrauterine device
Copper coil
Makes uterus unfavourable to sperm
Causes endometrial inflammatory reaction (inhibiting implantation)
What is the mechanism of action of the intrauterine system
Levonorgestrel-releasing coil
Thins endometrium
Thickens cervical mucus
How long does if take for IUD/IUS to become effective
IUD
- Immediately
IUS
- Immediately if in first 7 days of cycle
- 7 days if not in first 7 days of cycle
What are the indications for IUD/IUS
IUD
- Emergency contraceptive
IUS
- 1st line for heavy menstrual periods
- 2nd line for dysmenorrhoea
What are the contraindications for IUD/IUS
Infection (history of PID, recent STI)
Current pregnancy - 4 weeks post-partum
Uterine structural abnormality
Current gynaecological malignancy
Current unexplained vaginal bleeding
What do IUD/IUS increase the risk of
Ectopic pregnancy
What are the 2 types of emergency contraceptive pill
Levonorgestrel
- Synthetic progesterone
- Delays ovulation by 5-7 days
- Within 72 hours of unprotected sex
Ulipristal acetate
- Progesterone receptor modulator
- Delays ovulation by 5-7 days
- Within 120 hours of unprotected sex
How soon after unprotected sex does an IUD need to be inserted as an emergency contraceptive
5 days
Lasts 5-10 years
What are the contraindications for levonorgestrel emergency contraceptive
No absolute contraindications
Efficacy reduced by
- Diseases of malabsorption
- Enzyme inducing drugs
What are the contraindications for ulipristal acetate emergency contraceptive
Diseases of malabsorption
Hypersensitivity to ulipristal acetate
Severe hepatic dysfunction
Enzyme-inducing drugs
Breastfeeding
Asthma insufficiently controlled by corticosteroids
Drugs increasing gastric pH
What are the contraindications for IUD as an emergency contraceptive
Uterine fibroids with distortion to uterine cavity
Documented/suspected PID
Documented/suspected STI
What follow up advice should be given to women taking emergency contraceptive
Seek help if vomiting within
- 2 hours for levonorgestrel
- 3 hours for ulipristal acetate
Effectiveness declines as time since intercourse increases
What is pelvic inflammatory disease
Infection of the upper genital tract in females
May involve the uterus, endometrium, fallopian tubes, and ovaries
Mostly in sexually active women 15-24
What are the most common causative organisms of pelvic inflammatory disease
Chlamydia trachomatis
Neisseria gonorrhoea
What are the risk factors for pelvic inflammatory disease
Sexually active
15-24
Recent partner change
Intercourse without barrier contraceptives
History of STIs
Personal history of PID
Instrumentation of cervix
What are the clinical features of pelvic inflammatory disease
May be asymptomatic
Lower abdominal pain
Deer dyspareunia
Menstrual abnormalities
Post-coital bleeding
Dysuria
Fever and N+V in severe cases
What would you find on vaginal examination in PID
Tenderness of uterus/adnexae
Cervical excitation
Palpable mass in lower abdomen
Abnormal vaginal discharge
What are the differential diagnoses for PID
Ectopic pregnancy
Ruptured ovarian cyst
Endometriosis
UTI
What investigations are needed for PID
Endocervical swab (for gonorrhoea and chlamydia)
High vaginal swab (for trichomonas vaginalis and bacterial vaginosis)
Full STI screen
Urine dip
Pregnancy test
Transvaginal ultrasound/laparoscopy if uncertain
What is the management for pelvic inflammatory disease
Antibiotics
- 14 days, broad spectrum, start immediately
Simple analgesia
Rest
Avoid sexual intercourse until partner also treated
All sexual partners from last 6 months to be tested
When should you admit someone to hospital with suspected PID
Pregnant
Severe symptoms (nausea, vomiting, high fever)
Signs of pelvic peritonitis
Unresponsive to oral antibiotics
Need for emergency surgery
What are the complications of pelvic inflammatory disease
Ectopic pregnancy
Infertility
Tubo-ovarian abscess
Chronic pelvic pain
Fitz-High-Curtis syndrome
What is chlamydia
Infection due to chlamydia trachomatis
Most common bacterial STI in the UK