Gynaecology Flashcards
What is the average blood loss per menstrual cycle?
30-40ml
What are some systemic causes of menorrhagia?
Hypothyroidism
Chronic liver disease
Blood thinning drugs
Bleeding disorders (e.g. Von Willebrands)
What are some local causes of menorrhagia?
Vulval/vaginal/cervical cancer or malignancy IUCD DUB Fibroids Endometriosis Adenomyosis Endometrial polyp/malignancy PID Granulosa ovarian tumours
What is the commonest cause of menorrhagia?
Dysfunctional Uterine Bleeding (DUB)
What is DUB?
Heavy and/or irregular bleeding with no underlying pelvic pathology
What are the two commonest underlying causes of DUB?
Anovulatory cycles - often post-menarche or peri-menopause
Poor quality eggs leading to poor quality corpus luteums and luteal phase defects
What are the different medical management option for DUB?
Mirena IUS
Tranexamic acid
Mefenamic acid (not as effective as tranexamic)
COCP
Progestogens (depo-provera or oral norethisterone)
If anovulatory cycles, try COCP to regulate. If not, try tranxeamic acid. PATIENT CHOICE is important.
What are the surgical options for DUB?
Endometrial ablation
Hysterectomy
How many and for how long should medical management of DUB be done before considering surgical options?
Trial of 2 different options both for at least 3 months
What are some long term complications of endometrial ablation?
Decreases fertility
May lead to placenta percreta if do concieve
Woman presents with intensely itchy white vaginal discharge. Vulva sore and red.
Thrush
What is the organism causing thrush?
Candida Albicans (yeast)
How is thrush treated?
Topical clotrimazole 500mg pessary + cream
OR
Oral fluconazole 150mg stat
Woman presents with watery, grey, fishy discharge. Vaginal pH >4,5. Clue cells seen on HVS.
Bacterial Vaginosis
What causes bacterial vaginosis?
Overgrowth of normal vagina flora - Gardnerella vaginalis, mobiluncus, anaerobes
How is bacterial vaginosis treated?
Metronidazole 400 mg BD (7 days)
What chlamydia serovars cause genital infection?
Serovars D-K
A-C cause trachoma. L-lymphogranuloma
How does chlamydia present in females?
Asymptomatic. Post coital/intermenstrual bleeding. Lower abdominal pain. Dyspareunia. Mucopurluent cervicitis.
How does chlamydia present in males?
Urethral discharge, dysuria, urethritis, epididimo-orchitis
How is chlamydia/gonorrhoea diagnosed?
Combined test for both organisms
Females - HVS for PCR/NAATs
Males - first void urine for PCR/NAATs
How is chlamydia treated?
Azithromycin 1g stat
If allergic, doxycycline 100mg BD (7 days)
What are some complications of untreated chlamydia?
PID, pelvic pain, sexually acquired reactive arthritis, Fitz-Hugh-Curtis syndrome.
How is pelvic inflammatory disease treated?
Metronidazole 400mg BD and Ofloxacin 400mg BD (14 days)
How does gonorrhoea present in men and women?
Asymptomatic, altered/urethral discharge, dysuria
How is gonorrhoea treated?
IM ceftriaxone 500mg and oral azithromycin 1g stat
What is the causative organism of syphilis?
Treponema Pallidum
How does primary syphilis present?
Chancre - indurated, firm papule, with raised edge. Usually heals itself without treatment.
How does secondary syphilis present?
Maculopapular rash and flu like symptoms. Occurs when the organism is in the blood stream.
How does tertiary syphilis present?
Neuological/cardiovacular complications
How is syphilis diagnosed?
If lesion present - swab lesion for PCR
If none present - bloods
What blood tests are done to diagnose syphilis?
Combined IgG and IgM ELISA test (IgM positive in active infection)
TPPA (stays positive for life even if syphilis treated)
VDRL and RPR (non-specific tests of inflammation. Useful for assessing response to treatment)
How is syphilis treated?
Long acting injectable penicillins
What organism causes genital warts?
HPV 6 & 11
How are genital warts treated?
Cryotherapy or Podophyllin toxin
What causes genital herpes?
Herpes Simplex Virus I and II
How does genital herpes present?
Painful, multiple small vesicles that are easily deroofed. May be dysuria, discharge, lymphadenopathy
How is genital herpes diagnosed?
Swab for PCR
How is genital herpes treated?
Aciclovir 200mg 5 times a day for 5 days
Subsequent attack - aciclovir cream
Woman presents with frothy green, offensive discharge. Strawberry cervix. HVS shows flagellae motion of organism.
Trichomonas vaginalis - single celled protozoal parasite
How is trichomonas vaginalis treated?
Metronidazole 400mg BD (7days)
Treat partners even if asymptomatic as can be carriers
Woman has itching, inflammation in pubic area. Black ‘powder’ seen in underwear.
Pubic lice
How are pubic lice treated?
Malathion lotion
Where is the target of HIV virus?
CD4+ receptors
How does HIV affect the immune system?
Reduces circulation and proliferation of CD4+ cells
Reduces activity of CD8+ cells
Reduces anitbody class switching
What are the implications of HIV affecting the immune system?
Increased susceptibility to viral, fungal and bacterial infections as well as infection induced cancers
What is a normal CD4+ count?
500-1600 cells/mm2
At what CD4+ count is there a risk of opportunistic infection?
200 cells/mm2 and less
When does primary HIV infection occur?
Around 2-4 weeks after contracting HIV
What are the symptoms of primary HIV infection?
fever, maculopapular rash, myalgia, pharyngitis
What are the 3 broad areas of AIDS?
Opportunistic infections, constitutional symptoms and AIDS related cancers
Name 3 AIDS related cancers
Kaposi’s sarcoma, Burkitts lymphoma, Cervical cancer (all virally driven)
How is HIV treated?
Highly active anti-retroviral treatments (HAART)
Combination of 3 drugs from 2 classes
When is post-exposure prophylaxis given?
Taken within 72 hours of exposure for 28 days
What measures should be taken for a HIV +ve male to conceive?
Sperm washing + IUI/IVF
Timed UPSI with HAART +/- PrEP
What measures should be taken for a HIV +ve female to conceive?
Self-insemination
Timed UPSI with HAART
Should HIV+ve women take HAART during pregnancy?
Yes as risk of HIV greater to the baby than the medications
What factors affect whether a HIV+ve women has a vaginal delivery or a c-section?
Viral load (<50 vaginal birth is safe)
CD4+ count (>350 vaginal birth is safe)
Previous obstetric history
Should newborns be given antiretrovirals?
YES - babies should receive PEP within 4 hours of delivery and continue for 28 days
What is the histology of the ectocervix?
Stratified squamous epithelium
What is the histology of the endocervix?
Simple columnar epithelium
What is the transitional zone of the cervix?
The squamo-columnar junction between the endocervix and ectocervix
What is cervicitis?
Inflammation of the cervix
How does cervicitis present?
Asymptomatic/ discharge, dyspareunia, intermenstrual bleeding, post-coital bleeding
What are some causes of cervicitis?
STIs, allergies (e.g. latex), BV
What is a cervical ectropion?
When the endocervical columnar epithelium extends over the stratified sqaumous epithelium of the ectocervix
How does a cervical ectropion present?
Bleeding (intermenstrual, post coital), excess mucus, infections
How is a cervical ectropion treated?
Silver nitrate cautery
What are cervical polyps?
Pedunculated benign tumours of endocervix
What is cervical intraepithelial neoplasia?
Pre invasive stage of cancer, occurring at transitional zone
What is CIN I?
Basal 1/3rd of epithelium has abnormal cells
What is CIN II?
Basal 2/3rd of epithelium has abnormal cells
What is CIN III?
Full thickness of epithelium has abnormal cells
What is seen histologically in CIN?
Delay in differentiation, nuclear abnormalities, excess mitosis, koiliocytosis
How is CIN I managed?
Expectant management - repeat smear in 12 months
How is CIN II/III managed?
Cold coagulation
LLETZ (if suspicious of malignancy do this)
What is a complication of LLETZ?
Can lead to preterm labour (due to cervical insufficiency) - favour cold coagulation in women who have not completed their families
What type of cervical cancer is commonest?
Squamous cell (from ectocervix)
How does cervical cancer present?
Abnormal bleeding (PCB, IMB, brown stained discharge), pelvic pain, urinary infections
What is the main viral driver of cervical cancer?
HPV - mainly types `16, 18 and 33
What are some risk factor for cervical cancer?
HPV, smoking, HIV, early intercourse, many sexual partners, high parity, low socioeconomic status, COCP