Obs and gynae quesmed Flashcards
What is most sensitive test for pre-eclamsia?
-Urine protein:creatinine ratio (PCR)
-A PCR >30mg/mmol
When to repeat smear test if HPV + but no dyskaryosis?
12 months (if HPV still + then repeat at 24 months, if positive at 24 months colposcopy)
What are the two main associations of obstetric cholestasis?
-Fetal death
-Maternal haemorrhage
When should you plan to deliver baby in mother with obstetric cholestasis?
37-38 weeks
What is the action of clomifene and what re the side effects?
-Selective oestrogen receptor modulator
-Side effects include ovarian hyperstimulation syndrome
Post menopausal bleeding in women is what until proven otherwise?
Endometrial cancer
What are the most common causes of post menopausal bleeding?
-Atrophic vaginitis (inflammation and thinning)
-Endometrial atrophy
-Cervical/endometrial polyps
-Endomterial hypertrophy
What is the HRT of choice in a women with regular periods?
Monthly, cyclical HRT
What is the HRT of choice in a women with irregular periods?
3 monthly, cyclical HRT
What is the HRT of choice in post-menopausal women ?
Continuous combined HRT
What can VWD disease cause?
-Menorrhagia (heavy periods)
-Will have prolonged APTT
What is first line to induce labour?
Prostaglandin pessary
What does PCOS do to risk of endometrial and ovarian cancer?
Increases the risk by 2-3 times
What symptoms can risperidone cause?
-Reduced libido, galactorrhoae and amenorrhoea
What is the treatment for lichen sclerosus?
-Topical corticosteroids (potent steroids such as dermovate) to reduce inflammation and itching
-Avoid soaps
-Emollients to relieve dryness and soothe itching
Describe first degree perineal tear
Tear limited to the superficial perineal skin or vaginal mucosa only
-Heal quickly, no muscle involvement and heal quickly superficial
Describe second degree perineal tear
Tear extends to perineal muscles and fascia, but the anal sphincter is intact (episiotomy is anatomically classified as second degree)
Describe third degree perineal tear
3a: less than 50% of the thickness of the external anal sphincter is torn
3b: more than 50% of the thickness of the external anal sphincter is torn, but the internal anal sphincter is intact
3c: external and internal anal sphincters are torn, but anal mucosa is intact
Describe fourth degree perineal tear
Perineal skin, muscle, anal sphincter and anal mucosa are torn
What can cause an enlarged, irregular and firm non tender uterus?
Fibroids
When does uterus return to non-pregnant size?
4 week post party
When is the anomaly scan performed?
18-20 + 6 weeks
What can you give women prior to fibroid surgery to mange bleeding?
Goserelin
What is the triad of hyperemesis gravidarum?
weight loss, dehydration and electrolyte disturbance
A key finding is ketonuria
What age group do germ cell ovarian tumours normally affect?
younger women
What is the Kleihauer test used for?
Used to assess the number of foetal cells within the maternal circulation
If cervial ectropion that is bothersome?
Non-urgent colpscopy
Why is diabetes mellitus a risk factor for developing endometrial cancer?
There are several possible mechanisms linking diabetes and endometrial cancer, one of which is the proliferation of endometrial stromal cells in response to high insulin levels.
What are the infection routinely screened for in pregnancy?
-Syphilis
-Hep B
-HIV
-Rubella
What is choice of medication for GBS prophylaxis?
IV intrapartum benzylpenicillin
What is the cut off Hb for high dose folic acid?
110
What is a risk factor for hyperemesis gravidarum?
Trophoblastic disease due to raised beta-HCG
What is diagnostic of a miscarriage with crown-length rump >7mm?
A transvaginal ultrasound demonstrating a crown-rump length greater than 7mm with no cardiac activity is diagnostic
What is Human chorionic gonadotropin (hCG)?
-A hormone first produced by the embryo and later by the placental trophoblast
-Main role is to stop degeneration of corpus luteum
-
Contraceptives - time until effective (if not first day period)?
instant: IUD
2 days: POP
7 days: COC, injection, implant, IUS
Treatment for vaginal vault prolapse?
Sacrocolpopexy - this suspends the vaginal apex to the sacral promontory. This support is usually afforded by the uterosacral ligaments.
What are the normal laboratory findings during pregnancy?
Reduced urea, reduced creatinine, increased urinary protein loss (look out for pre-eclampsia)
What is most common cause of postmenopausal bleeding?
vagianal atrophy
Methotrexate when conceiving?
6 months before stop in male and female
How long does urine pregnancy remain positive for following termination?
4 weeks - if beyond this then indicates incomplete abortion or persistent trophoblasts
How does the COCP work?
-Inhibiting ovulation to reduce LH and FSH
-Also thought to alter the cervical mucus
What type of contraception isn entogestrel (implantable contraceptive)?
-Long acting reversible method of contraception
-Prevents ovulation
-Also prevent sperm implantation by altering cervical music and preventing implantation but thinning endometrium
How does the copper intrauterine device work?
Decreases sperm motility and survival
How does intrauterine system (levonorgestrel) work?
Prevents endometrial proliferation
Also thickens cervical mucus
How does Progestogen-only pill (excluding desogestrel) work?
Thicken cervical mucus
-this is the pill that you must take within 3 hour time frame
How does the desogestrel only pill work?
-Inhibits ovulation
-Thickens cervial mucus
-Take within 12 hours
How does Injectable contraceptive (medroxyprogesterone acetate) work?
-Inhibits ovulation
-Thickens cervical mucus
If 1st repeat smear at 12 months is hrHPV positive then when do you repeat the smear? (cytology normal cells)
repeat in 12 months
Why should COCP not be used in 1st 21 days?
Increased venous thromboebolsim risk
What are the classic symptoms of endometriosis?
pelvic pain, dysmenorrhoea, dyspareunia and subfertility
When should referral be made to maternal fetal medicine unit if no metal movements are felt?
24 weeks
How does acute fatty liver disease of pregnancy present?
jaundice, mild pyrexia, hepatitic LFTs, raised WBC, coagulopathy and steatosis on imaging
Why is it normal for ALP to be raised in pregnancy?
Due to placental ALP
Management of PPH in order
1.Bimanual uterine compression to manually stimulate contraction
2.Intravenous oxytocin and/or ergometrine
3.Intramuscular carboprost
4. Intramyometrial carboprost
5.Rectal misoprostol
6.Surgical intervention such as balloon tamponade
What is salpingectomy?
Removal of fallopian tube
What score can be used to assess severity of symptoms for vomiting?
-Pregnancy unique quantification of emesis (PUQE) score
When does patient have smear test ever 5 years instead of eery 3 years?
Once over 50
How should women be managed who are bleeding <6 weeks gestation? (with no pain or risk factor for ectopic pregnancy?)
-These women can be managed expectantly
-Return if bleeding continues or pain develops
-Advise to repeat urine pregnancy test after 7-10 days
-A negative pregnancy test means the pregnancy has miscarried
Progesterone only pill and antibiotics?
-No need for extra precautions
What antibiotics can affect the pill?
-Enzyme inducing antibiotics, such as rifampicin
What is gestational trophoblastic disease?
-Abnormal cells or tumours that start in the uterus from cells that would normally develop in the placenta
What is hyperemesis gravidarum?
The extreme form of vomiting and nausea
-occurs in 1% pregnancy and is thought to be associated with raised beta hCG levels
When is hyepermesis gravidarum most common?
-Between 8-12 weeks but may persist put to 20 weeks
What are the risk factor for hyperemesis gravidarum?
-Increased levels of beta hCG (multiple pregnancy and trophoblastic disease)
-Nulliparity
-Obesity
-Family or personal history of NVP
Relationship with smoking and hyperemesis?
-Associated with decreased incidence of hyperemesis
What is the NICE criteria for referral of nausea and committing in pregnancy?
- Continued nausea and dominating and unable to keep down liquids and oral antiemetics
- Continued nausea and committing with ketonuria and/or weight loss (greater 5% of body weight), despite treatment with oral antiemetics
- A confirmed or suspected cormorbitiy e.g. unable to tolerate oral ABx for infection due to vomiting
When do NICE recommended to lower the threshold for admission to hospital?
If has co-existing condition (e.g. diabetes) that many be adversely affected by N and V
What is the triad of hyperemesis gravidarum?
-5% pre pregnancy weight loss
-Dehydration
-Electrolyte imbalance
What are the simple measures that can be taken for hyperemesis gravidarum?
-Rest and av oid triggers
-Bland, plain food
-Ginger
What are the first line medications for hypermedia gravidarum?
-Antihistamine: oral cyclizine or premethazine
-Phenothiazines: oral prochlorperazine or chlorpromazine
-Combination drug doxylamine/pyridoxine: pyridoxine (vitamin B6) monotherapy is actually used commonly outside of the UK as a first-line treatment for NVP. However, pyridoxine monotherapy is specifically not recommended in the RCOG guidelines
What are second line medications for hyperemesisgravidarum?
-Oral ondansetron (discuss risk of cleft palate with woman)
-Oral metocloprmid for domperiodone - metoclopramide may cause extrapyramidal side effects so do not use more than 5 days
What is used to hydrate patients with hyperemesis gravidarum?
-Normal saline with added potassium
Aside from weight loss, electrolyte imbalance what are the other complications of hyperemesis gravidarum?
-AKI
-Wernicke’s encephalopathy
-Oesophagitis, Mallory-Weiss tear
-Venous thromboembolism
How does hyperemesis gravidarum impact the foetus ?
-Studies show little evidence of adverse outcomes for birth weight/other markers for mild-moderate symptoms
-Severe NVP resulting in multiple admissions and failure to ‘catch up’ may be linked to small increase in preterm birth and low birth weight
What are the types ovarian cysts?
-Can get simple and complex
-Physiological cysts
-Benign germ cell tumours
-Benign epithelial tumours
-Benign sex cord stromal tumours
What is a complex cyst?
Cysts containing a solid mass, or those which are multi-loculated - should be treated as malignant until proven otherwise.
What are the tests recommended for premenopausal women with a complex cyst?
Serum CA-125, αFP and βHCG
What are the two types of physiological (functional cysts)?
-Follicular cyst
-Corpus letup cyst
What is a follicular cyst?
-Commonest type of ovarian cyst
-Due to a non-rupture of the dominant follicle or failure of atresia in a non-domain follicle
-Commonly regress after several menstrual cycles
How does a corpus lute cyst occur?
-During menstrual cycle if pregnancy doesn’t occur the corpus lutes may fill with blood or fluid and form a corpus luteal cyst
-These are more likely to present with intraperitoneal bleeding than follicular cyst
Give an example of a benign germ cell tumour?
-Dermoid cyst also called mature cystic teratoma
What is a dermoid cyst?
-A cyst lined with epithelial tissue, may contain skin appendages, hair and teeth
What is the median age of diagnosis with a dermoid cyst?
-30 years old
-This sis the ,out common benign ovarian tumour in woman under age 30 yrs
What percent of dermoid cysts are bilateral?
10-20%
What is the presentation of dermoid cyst?
-Usually asymptomatic
-More likely than with other ovarian tumours
Where of benign epithelial tumours arise?
-Arise form the ovarian surface epithelium
What are two types of benign epithelial ovarian tumours ?
-Serous cystadenoma
-Mucinous cystadenoma
What is serous cystadenoma?
- Most common benign epithelial tumour - bears resemblance to most common type of ovarian cancer (serous carcinoma)
-It is bilateral in around 20%