Gynaecology Flashcards
Ovarian enlargement: management
Management depends on the age of the patient and whether the patient is symptomatic. It should be remembered that the diagnosis of ovarian cancer is often delayed due to a vague presentation.
Premenopausal women
- a conservative approach may be taken for younger women (especially if < 35 years) as malignancy is less common. If the cyst is small (e.g. < 5 cm) and reported as ‘simple’ then it is highly likely to be benign. A repeat ultrasound should be arranged for 8-12 weeks and referral considered if it persists.
Postmenopausal women
- by definition physiological cysts are unlikely
- any postmenopausal woman with an ovarian cyst regardless of nature or size should be referred to gynaecology for assessment
Cysts - can be described as?
The initial imaging modality for suspected ovarian cysts/tumours is ultrasound.
The report will usually report that the cyst is either:
- simple: unilocular, more likely to be physiological or benign
- complex: multilocular, more likely to be malignant
Endometrial hyperplasia - types, features
Endometrial hyperplasia may be defined as an abnormal proliferation of the endometrium in excess of the normal proliferation that occurs during the menstrual cycle. A minority of patients with endometrial hyperplasia may develop endometrial cancer
Types:
- simple
- complex
- simple atypical
- complex atypical
Features:
- abnormal vaginal bleeding e.g. intermenstrual bleeding
Management:
- simple endometrial hyperplasia without atypia: high dose progestogens with repeat sampling in 3-4 months. The levonorgestrel intra-uterine system may be used
- atypia: hysterectomy is usually advised
Heavy menstrual bleeding - definition
Heavy menstrual bleeding (also known as menorrhagia) was previously defined as total blood loss > 80 ml per menses, but it is obviously difficult to quantify. The management has therefore shifted towards what the woman considers to be excessive.
The management of menorrhagia now depends on whether a woman needs contraception.
Heavy menstrual bleeding - Ix ?
- a full blood count should be performed in all women
- NICE recommend arranging a routine transvaginal ultrasound scan if symptoms (for example, intermenstrual or postcoital bleeding, pelvic pain and/or pressure symptoms) suggest a structural or histological abnormality. Other indications include abnormal pelvic exam findings.
Heavy menstrual bleeding- mx ?
- Does not require contraception
- either mefenamic acid 500 mg tds (particularly if there is dysmenorrhoea as well) or tranexamic acid 1 g tds. Both are started on the first day of the period
- if no improvement then try other drug whilst awaiting referral - Requires contraception, options include
- intrauterine system (Mirena) should be considered first-line
- combined oral contraceptive pill
- long-acting progestogens
Norethisterone 5 mg tds can be used as a short-term option to rapidly stop heavy menstrual bleeding.
Pelvic inflammatory disease- causative ?
Causative organisms:
- Chlamydia trachomatis
+ the most common cause
- Neisseria gonorrhoeae
- Mycoplasma genitalium
- Mycoplasma hominis
PID - features ?
Features:
- lower abdominal pain (pain developing over a long duration - not as acute as ectopic for example)
- fever
- deep dyspareunia
- dysuria and menstrual irregularities may occur
- vaginal or cervical discharge (e.g. smelly discharge - that may be a sign of a sexually transmitted infection)
- cervical excitation
PID - Ix, and mx
Investigation
- a pregnancy test should be done to exclude an ectopic pregnancy
- high vaginal swab –these are often negative
- screen for Chlamydia and Gonorrhoea
(endocervical swab specifically a NAATS test )
Management
- oral ofloxacin + oral metronidazole or
intramuscular ceftriaxone + oral doxycycline + oral metronidazole
- RCOG guidelines suggest that in mild cases of PID intrauterine contraceptive devices may be left in. The more recent BASHH guidelines suggest that the evidence is limited but that ‘ Removal of the IUD should be considered and may be associated with better short term clinical outcomes’
PID - complications?
- perihepatitis (Fitz-Hugh Curtis Syndrome)
- -occurs in around 10% of cases
- -it is characterised by right upper quadrant pain and may be confused with cholecystitis
- infertility - the risk may be as high as 10-20% after a single episode
- chronic pelvic pain
- ectopic pregnancy
Amenorrhoea - definiton
Amenorrhoea may be divided into primary (failure to start menses by the age of 16 years) or secondary (cessation of established, regular menstruation for 6 months or longer).
Causes of primary amenorrhoea
- Turner’s syndrome
- testicular feminisation - complete androgen insensitivity syndrome, this is a genetic disorder that makes XY fetuses insensitive (unresponsive) to androgens (male hormones). Instead, they are born looking externally like normal girls
- congenital adrenal hyperplasia
- congenital malformations of the genital tract
Causes of secondary amenorrhoea ?
Secondary amenorrhoea is defined as when menstruation has previously occurred but has now stopped for at least 6 months.
- pregnancy
- hypothalamic amenorrhoea (e.g. Stress, excessive exercise)
polycystic ovarian syndrome (PCOS) - hyperprolactinaemia
- premature ovarian failure
- thyrotoxicosis* (*hypothyroidism may also cause amenorrhoea)
- Sheehan’s syndrome
- Asherman’s syndrome (intrauterine adhesions)
Amenorrhoea - initial investigations?
- exclude pregnancy with urinary or serum bHCG
- gonadotrophins: low levels indicate a hypothalamic cause where as raised levels suggest an ovarian problem (e.g. Premature ovarian failure)
- prolactin
- androgen levels: raised levels may be seen in PCOS
- oestradiol
- thyroid function tests
Hyperemesis gravidarum
Whilst the majority of women experience nausea (previously termed ‘morning sickness’) during the early stages of pregnancy it can become problematic in a minority of cases. The Royal College of Obstetricians and Gynaecologists (RCOG) now use the term ‘nausea and vomiting of pregnancy’ (NVP) to describe troublesome symptoms, with hyperemesis gravidarum being the extreme form of this condition.
It occurs in around 1% of pregnancies and is thought to be related to raised beta hCG levels. Hyperemesis gravidarum is most common between 8 and 12 weeks but may persist up to 20 weeks*
*and in very rare cases beyond 20 weeks.
Hyperemesis gravidarum - associations
Associations
- multiple pregnancies
- trophoblastic disease
- hyperthyroidism
- nulliparity
- obesity
(Smoking is associated with a DECREASED incidence of hyperemesis)
Referral criteria for nausea and vomiting in pregnancy
NICE Clinical Knowledges Summaries recommend considering admission in the following situations:
- Continued nausea and vomiting and is unable to keep down liquids or oral antiemetics
- Continued nausea and vomiting with ketonuria and/or weight loss (greater than 5% of body weight), despite treatment with oral antiemetics
- A confirmed or suspected comorbidity (for example she is unable to tolerate oral antibiotics for a urinary tract infection)
They also recommend having a lower threshold for admitting to hospital if the woman has a co-existing condition (for example diabetes) which may be adversely affected by nausea and vomiting.
Diagnosis of Hyperemesis gravidarum
The Royal College of Obstetricians and Gynaecologists (RCOG) recommend that the following triad is present before diagnosis hyperemesis gravidarum:
- 5% pre-pregnancy weight loss
- dehydration
- electrolyte imbalance
Validated scoring systems such as the Pregnancy-Unique Quantification of Emesis (PUQE) score can be used to classify the severity of NVP.
Management of Hyperemesis gravidarum
- antihistamines should be used first-line (BNF suggests promethazine as first-line). Cyclizine is also recommended by Clinical Knowledge Summaries (CKS)
- ondansetron and metoclopramide may be used second-line
metoclopramide may cause extrapyramidal side effects - ginger and P6 (wrist) acupressure: CKS suggest these can be tried but there is little evidence of benefit
-admission may be needed for IV hydration
Complications of Hyperemesis gravidarum?
- Wernicke’s encephalopathy - patients can present with diplopia and ataxia suggestive of this. Therefore supplementation of thiamine (Vitamin B1) with a vitamin B and C complex (e.g. Pabrinex) is indicated.
- Mallory-Weiss tear
- central pontine myelinolysis
- acute tubular necrosis
- fetal: small for gestational age, pre-term birth
Endometrial hyperplasia is caused by …
Endometrial hyperplasia is caused by oestrogen which is unopposed by progesterone
Endometrial hyperplasia is associated with:
- Taking oestrogen unopposed by progesterone
- Obesity
- Late menopause
- Early menarche
- Aged over 35-years-old
- Being a current smoker
- Nulliparity
- Tamoxifen (oestrogen unopposed by progesterone)- Tamoxifen is a risk factor due to its pro-oestrogen effect on the uterus and bones. It does also have an anti-oestrogen effect on the breast.
Endometrial hyperplasia - definiton
Endometrial hyperplasia may be defined as an abnormal proliferation of the endometrium in excess of the normal proliferation that occurs during the menstrual cycle.
- A minority of patients with endometrial hyperplasia may develop endometrial cancer
Endometrial hyperplasia - types
- simple
- complex
- simple atypical
- complex atypical