Day: April 8, 2024

Pre-eclampsia

Introduction Pre-eclampsia is a complication of pregnancy characterised by hypertension and proteinuria with or without oedema. It is a systemic disease whose exact aetiology is still not fully understood, though uteroplacental dysfunction and widespread maternal endothelial dysfunction is seen. It is a significant cause of maternal morbidity and mortality. Severe cases may result in seizures (eclampsia), multi-organ failure (in particular the liver and kidneys) and significant coagulopathy. There are a number of terms to be aware of which may be variably defined. Here we present the definitions from the International Society for the Study of Hypertension in Pregnancy (ISSHP), The classification,

Postpartum haemorrhage

Introduction Obstetric haemorrhage, which includes both antepartum and postpartum haemorrhage, is the leading cause of maternal death worldwide. Within the UK, maternal death from obstetric haemorrhage is uncommon, but still causes approximately 7 deaths per year. Postpartum haemorrhage refers to vaginal bleeding up to 12 weeks following delivery. Prompt recognition and management is key to good outcomes. It should be remembered that earlier antepartum haemorrhage can reduce a patient’s physiological reserve and ability to compensate for bleeding in the postpartum period. Classification Postpartum haemorrhage (PPH) can be classified as either primary or secondary. Primary PPH: is defined as vaginal bleeding that occurs from

Normal labour

Introduction In 2018 an estimated 731,213 births took place in the UK according to figures from the ONS. In healthy women, with a singleton pregnancy, who have not suffered from complications during this or previous pregnancies, a normal labour can often be expected. As NICE advise, women, if healthy and low risk, should be supported in having their birth at home, in a midwifery unit or an obstetric unit in line with their preference. First stage Regular contractions herald the arrival of the first stage of pregnancy and continues until the cervix is fully dilated. Aspects of care A partogram – graphic

Intrahepatic cholestasis of pregnancy

Overview Intrahepatic cholestasis of pregnancy is a liver disease unique to pregnancy that is characterised by pruritus and elevated bile acids. Intrahepatic cholestasis of pregnancy (ICP) is the most common pregnancy-associated liver disease. It is characterised by pruritus (i.e. itching), elevated bile acids, and variable elevations in liver function tests (e.g. ALT/AST). It is due to cholestasis (i.e. decreased bile flow) and classically occurs in the late second or third trimester. ICP is important to recognise because it is associated with an increased risk of fetal demise and stillbirth, particularly when the bile acid concentration is ≥ 100 micromol/L. Pregnancy-associated liver disease

Hyperemesis gravidarum

Overview Hyperemesis gravidarum refers to severe nausea and vomiting in pregnancy. Nausea and vomiting in pregnancy affects around 80-90% of women. In its more severe form it is referred to as hyperemesis gravidarum. These terms can be defined as follows: Nausea and vomiting in pregnancy: refers to nausea and vomiting with onset in the first trimester when other causes are excluded. Symptoms tend to develop between 4 – 7 weeks and resolve by 20 weeks in most women. Hyperemesis gravidarum: this is diagnosed in patients with protracted nausea and vomiting and the following triad: > 5% pre-pregnancy weight loss Dehydration Electrolyte imbalance Epidemiology

Caesarean section

Introduction Caesarean section is an operation in which a baby is delivered via an abdominal incision. The caesarean section, or procedures similar to it, have been described for thousands of years in many of the world’s cultures. To this day the origins of the term caesarean are disputed. A caesarean section is a birthing option that in some circumstances reduces risk to the mother, baby or both. Many women also choose to opt for a caesarean section for personal reasons having weighed it up against a vaginal delivery. In total, around 25-30% of births in the UK are via caesarean section. The following

APGAR score

Overview The APGAR score is conducted in term infants as an assessment of clinical status immediately following birth. It was developed by an American anaesthetist, Dr Virginia Apgar, in 1952 as a quick assessment of clinical status. For those interested, a reprint of the original publication can be found here. The score has five components; heart rate, respiratory effort, muscle tone, reflex irritability, and colour. Each receives a score from 0 to 2 with a maximum score of 10. Score The score is calculated at one and five minutes after cleaning and drying the baby in a warm towel. If necessary it may be repeated

Antepartum haemorrhage

Introduction Obstetric haemorrhage, which includes both antepartum and postpartum haemorrhage, is the leading cause of maternal death worldwide. Within the UK, maternal death from obstetric haemorrhage is uncommon, but it still causes approximately 4-7 deaths per year. Obstetric haemorrhage is a common cause of both maternal and neonatal morbidity. Antepartum haemorrhage (APH) complicates approximately 3-5% of all pregnancies. It is estimated that up to 20% of very preterm babies are born in association with an APH. APH is defined as any vaginal bleeding from 24 weeks gestation until delivery. Bleeding that occurs within the first 24 weeks of gestation is known

Pre-exposure prophylaxis

Introduction Pre-exposure prophylaxis (PrEP) refers to the use of anti-retroviral therapy (ART) to prevent the new acquisition of HIV. Prevention of new infections is fundamental to the management of HIV. There have been a number of studies which show, with excellent adherence, PrEP offers marked reduction in the risk of contracting the virus. There are a number of indictions for PrEP which typically takes the form of Tenofovir Disoproxil / Emtricitabine (TD-FTC). It can be given in two ways depending on the individuals requirements and risks: Daily tablet On demand (e.g. two tables 2-24 hours prior to sex, and one tablet daily

HIV

Introduction Human immunodeficiency virus (HIV) is a retrovirus that, when untreated, causes progressive immunodeficiency with resulting susceptibility to opportunistic infections and malignancies. HIV was first identified in 1983, two years after the first description of acquired immunodeficiency syndrome (AIDS). AIDs refers to a state of immunodeficiency that results from infection with HIV, typically taking several years (median 8-10) following exposure to develop. In the UK there has been a move away from the term AIDs, which is still bound by significant stigma, to late-stage HIV. It is characterised by a CD4 count < 200 and/or AIDs defining illnesses. Prior to effective

Antiretroviral therapy

Introduction Antiretroviral therapies (ART) have revolutionised HIV care, transforming what was once an almost invariably fatal illness into a treatable chronic disease. ARTs enable those with HIV, in many cases, to live near-normal lives (depending on factors such as stage at diagnosis). There are six major classes of medication; entry inhibitors, nucleoside/nucleotide reverse transcriptase inhibitors (NRTIs), non-nucleoside reverse transcriptase inhibitors (NNRTIs), integrase inhibitors, protease inhibitors and post-attachment inhibitors. The options available allow for changes to be made in light of resistance patterns, experienced side effects and personal risk factors. As a general rule, regimens consist of: Two nucleoside reverse transcriptase

Uterine fibroids

Introduction Uterine fibroids (leiomyomas) are benign tumours that arise from the muscle layer of the uterus termed the myometrium. Fibroids are the most common type of pelvic tumour in women, usually arising in those of child-bearing age. They may be asymptomatic or present with a variety of symptoms including bleeding (e.g. menorrhagia), pelvic pain and/or infertility. Epidemiology They are the most common type of pelvic tumour and a leading cause of hysterectomy. The exact epidemiology of uterine fibroids is difficult to assess as many women are asymptomatic. In general, the incidence of uterine fibroids increases with age until the menopause with peak incidence in women in

Urinary incontinence

Introduction Urinary incontinence refers to the involuntary leakage of urine. Urinary incontinence is common in women and incidence increases with advancing age. There are a number of subtypes: Stress incontinence: related to increased intra-abdominal pressure Urgency incontinence: related to an overactive bladder Mixed incontinence: a combination of the above two causes Overflow incontinence: secondary to ‘overflow’ in patients with urinary retention This note focuses specifically on urinary incontinence in women and those with female pelvic organs. Epidemiology It is estimated that 5-69% of females have urinary incontinence. There is a wide range of incidence and prevalence estimates for urinary incontinence in women.

PCOS

Introduction Polycystic ovary syndrome (PCOS) is an endocrine condition characterised by menstrual dysfunction and features of hyperandrogenism. PCOS is one of the most common endocrine disorders in women of reproductive age, with features often developing at puberty. It is a heterogeneous condition presenting with a wide clinical spectrum. Some women experience relatively mild symptoms whilst others suffer from debilitating effects. Clinical features are those of menstrual irregularity (oligo/amenorrhoea), hyperandrogenism (e.g acne, hirsutism) and anovulatory infertility. Management depends on the manifestation of the condition in each individual but often involves the restoration of ovulation, preventing endometrial hyperplasia, reducing hyperandrogenism and screening for

Ovarian cancer

Overview Ovarian cancer refers to a malignancy arising from ovarian tissue. Ovarian cancer is the second most common gynaecological cancer following endometrial cancer, with a lifetime risk in women estimated at 1 in 52. It is relatively rare before the age of thirty with incidence increasing with age (highest in those aged 75-79). The majority of ovarian cancers (around 90-95%) arise from epithelial cells, so-called epithelial ovarian carcinomas, with the remaining being classified as non-epithelial ovarian carcinomas. It can be asymptomatic, particularly in early disease, and when features do develop they may be non-specific. As such it is often diagnosed at an advanced

Miscarriage

Introduction A miscarriage refers to the spontaneous loss of pregnancy before 24 weeks of gestation. Miscarriage is common, affecting up to 30% of all pregnancies. It tends to present with per vaginal (PV) bleeding that may be associated with abdominal pain/cramps. The symptoms can be dismissed as a period in early miscarriage in those who do not know they are pregnant. Miscarriages may be classified as early (less than 13 weeks gestation) or late (between 13 and 24 weeks gestation). Foetal genetic/chromosomal abnormalities are the single most common cause of miscarriage though often there is no identifiable cause. Management may be

Menorrhagia

Definition Menorrhagia refers to excessive, abnormal uterine bleeding, which occurs over several consecutive cycles and interferes with a woman’s physical, emotional, social, and material quality of life. Menorrhagia is hard to define clinically. We must first consider parameters of normal menstrual bleeding. The key parameters in normal menstrual bleeding include frequency, regularity, volume and duration of menses. Frequency: every 21-35 days Regularity: consistent cycle frequency Volume: approximately 5-80 mL of blood Duration: bleeding for 5 days Markers of menorrhagia include increased frequency of blood soaked pads/tampons or blood loss that interferes with daily activities. In the literature, menorrhagia is traditionally quoted as blood loss exceeding 80 mL. Menorrhagia is often

Menopause

Overview Menopause is the natural cessation of menstruation due to loss of ovarian follicular activity. It most commonly occurs between the ages of 45 – 55 with a mean age of 51. As hormonal levels change, many will experience irregular periods and vasomotor features (e.g. hot flushes). This is followed by the cessation of menstruation. There are a number of key terms that students should be aware of: Premature menopause: in some women, menopause occurs early for a myriad of reasons. If it occurs prior to 40 it is termed premature menopause. Perimenopause: occurs prior to menopause and is characterised by an irregular

Lichen sclerosus

Overview Lichen sclerosus is a chronic, progressive skin disorder that most commonly affects the genitalia and perianal area. Lichen sclerosus is a chronic dermatological condition that is characterised by pruritus and irritation in the anogenital area. The condition is ten times more common in women and classically affects the labia minora and/or majora with development of white atrophic plaques that may lead to architecture destruction overtime. Other terms: Lichen sclerosus et atrophicus (old term used in women) Balanitis xerotica obliterans (used to describe lichen sclerosus of the gland penis in men) Epidemiology Lichen sclerosus is much more common in woman. Lichen sclerosus is up to ten times

Endometriosis

Overview Endometriosis refers to the extrauterine implantation and growth of endometrial tissue. It is often a chronic and debilitating condition that is likely under-recognised and often diagnosed after repeated presentation. Like endometrial tissue in the uterus, endometriosis responds to cyclical hormones leading to inflammation, bleeding and scaring. The deposits are most frequently on pelvic structures – with the ovaries most affected – though they may also occur on extra-pelvic structures (on rare occasions even in the pleural cavity or brain). It commonly causes pain but may also lead to reduced fertility and the formation of adhesions. Two specific terms to be aware of are: Adenomyosis: Specifically

Endometrial cancer

Overview Endometrial cancer refers to malignancy of the lining of the uterus (i.e the endometrium). Endometrial cancer (EC) is the most common gynaecological malignancy in developed countries. It is due to abnormal proliferation of endometrial cells, which commonly presents with abnormal uterine bleeding. Due to the early presentation with bleeding, the five-year survival is more favourable than some cancers, estimated around 75%. EC is strongly linked to obesity. The rising rates of obesity has led to a significant increase in the incidence of EC. It is the sixth most common female malignancy worldwide. The mean age of diagnosis is around 60 years for non-inherited EC. However, in

Ectopic pregnancy

Introduction Ectopic pregnancies refer to any pregnancy that develops outside the endometrial cavity. They affect approximately 1 in 90 pregnancies in the UK, translating to around 11,000 cases a year. The key to safe management and minimising maternal mortality is prompt recognition. When missed or late presenting, ectopic pregnancies can lead to serious and potentially fatal complications. Two national guidelines are available covering the diagnosis and management of ectopic pregnancy: RCOG/AEPU Joint Guideline: Diagnosis and Management of Ectopic Pregnancy, Nov 16. NICE Guideline 126: Ectopic pregnancy and miscarriage: diagnosis and initial management, Apr 19. Site 97% of ectopic pregnancies develop in the fallopian tube. The fallopian

Cervical cancer screening

Introduction NHS Cervical Screening Programme (NHSCSP) that screens women and transgender men (with retained cervix) aged 24.5-64. Cervical cancer is a common malignancy whose aetiology is intimately related to human papillomavirus. There are around 3,200 cases of cervical cancer in the UK each year and in 2017 it was the 14th most common cancer in women. The NHSCSP aims to prevent the development of cervical cancer through the early identification and treatment of premalignant lesions. The cervix The cervix, derived from the Latin cervix meaning neck, is a fibromuscular structure that sits at the lower portion of the uterus. It has an external

Cervical cancer

Overview Cervical cancer is a common malignancy whose aetiology is intimately related to human papillomavirus. In the UK it is the most common cancer in women younger than 35. In the developing world cervical cancer is the second most common cancer in women. It can occur in women, transgender men (with retained cervix) and non-binary individuals (assigned female at birth). Cervical screening can help to prevent cervical cancer by diagnosing and treating pre-malignant lesions. Unfortunately, attendance to screening fluctuates and has been falling recently prompting a number of national campaigns to combat this. Epidemiology There are around 3,200 cases of cervical cancer in

Bartholin gland cyst

Overview A Bartholin gland cyst refers to cystic dilatation of one of the greater vestibular glands due to obstruction. The Bartholin glands, also known as the greater vestibular glands, form part of the vulva (external female genitalia). A common abnormality of these glands is the formation of a cyst due to obstruction. A Bartholin gland cyst may become infected forming an abscess. Cysts can be small and asymptomatic or large and cause discomfort. Infection of the Bartholin glands often causes severe pain and swelling due to abscess formation. Management depends on the cyst size and presence or absence of abscess but usually

Vulvovaginal candidiasis

Overview Vulvovaginal candidiasis or ‘genital thrush’ refers to a superficial fungal infection of the vulva and/or vagina. Vulvovaginal candidiasis, or ‘thrush’, is a very common condition. Thrush is caused by a candidia infection and leads to a characteristic thick white discharge with symptoms or vulval and/or vaginal itching/soreness. Thrush is easily treated with over the counter anti-fungal creams. Classification Genital thrush can be divided into two types: Uncomplicated: refers to mild/moderate cases, which are sporadic or infrequent. This cases are due to C. albicansin patients without major co-morbidity (e.g. HIV, poorly controlled diabetes, non-pregnant). Complicated: refers to recurrent (≥4 episodes/year) and/or severe infection. In

Trichomoniasis

Overview Trichomoniasis is a sexually transmitted infection caused by the protozoan Trichomonas vaginalis. Trichomoniasis is a sexually transmitted infection (STI), which can affect both men and women. It classically causes vaginal discharge in women and urethral discharge in men, which is associated with soreness (due to vulvovaginitis or urethritis) and/or dysuria. Epidemiology Trichomoniasis is the most common non-viral sexually transmitted infections worldwide. Worldwide, trichomoniasis is extremely common but in the UK it is a relatively rare diagnosis with only an estimated 6000 cases/year. In the UK, 90% of cases occur in women due to the higher rate of spontaneous clearance in men. Aetiology & pathophysiology Trichomoniasis

Syphilis

Overview Syphilis refers to an infection caused by the bacterium Treponema pallidum. Syphilis is predominantly a sexually transmitted infection (STI) caused by the bacterium Treponema pallidum. Transmission occurs from direct contact with infectious lesions, usually during sexual intercourse. Untreated, syphilis can affect almost any organ in the body and was traditionally called the ‘great imposter’ because it can mimic many diseases in its late stages. Before the era of antibiotics syphilis was very common but it is now easily treated with penicillin when detected. Epidemiology The prevalence of syphilis has been growing in the UK over the last decade. Traditionally, Syphilis was a common condition but

Pediculosis pubis

Overview Pediculosis pubis refers to pubic lice and it is due to infection by Phthirus pubis (crab louse). Pediculosis pubis, or pubic lice, is more colloquially known as ‘crabs’ due to infection by the crab louse called Phthirus pubis. P. pubis is one of three types of lice than can infect humans. Phthirus pubis: crab louse. Infects the pubic region. Pediculosis humanus capitis: head louse. Infects the head. Pediculosis humanus corporis: body louse. Infects different regions of the body. Due to the location, pediculosis pubis is usually sexually transmitted although the lice can extend to other parts of the body, including eye lashes (pediculosis

Lymphogranuloma venereum

Overview Lymphogranuloma venereum is a sexually transmitted infection caused by Chlamydia trachomatis. Lymphogranuloma venereum (LGV) is a sexually transmitted infection (STI) caused by the organism Chlamydia trachomatis. C. trachomatis causes urogenital chlamydia, the common STI. Urogenital chlamydia is usually the result of serovars D-K, whereas LGV is caused by the serovars L1, L2 and L3. Serovars are a way to group organisms into species or subspecies based on the surface antigens. LGV is one of several genital ulcer conditions, which classically causes one or more painless shallow ulcers in the genital region. Genital ulcers The major causes of genital ulcers include: Syphilis: characterised

Granuloma inguinale

Overview Granuloma inguinale, also known as donovanosis, is a sexually transmitted infection caused by Klebsiella granulomatis. Granuloma inguinale is one of several causes of genital ulcers. It is a sexually transmitted infection (STI), which is caused by the bacterium Klebsiella granulomatis. The condition is most commonly found in tropical regions. Granuloma inguinale can be treated with antibiotics, but without treatment, it causes a chronic and progressive infection. Complications include lymphoedema, which may be severe enough to cause elephantiasis (gross enlargement of a body limb due to lymph obstruction) and there is an increased risk of malignancy (squamous cell carcinoma). Genital ulcers The major