Genitourinary Medicine Flashcards
What is Fitz-Hugh-Curtis syndrome and how does it present?
PID complication where the liver capsule becomes inflamed leading to development of adhesions between the liver and the surrounding peritoneum. This causes right upper quadrant pain radiating to the shoulder alongside other symptoms of PID (vaginal discharge, fever)
Managing a woman who tests positive for the first time for HR HPV after her smear test.
Positive cytology - refer for colposcopy
Negative cytology (no dyskaryosis of cells in the transformation zone) - repeat smear and test for HR-HPV after 12 months, if negative return to routine screen if positive without positive cytology repeat at 24 months, if positive again refer for colposcopy (increased risk of dyskaryosis)
HIV progression
Classification based on CD4 count
Incubation period - asymptomatic This stage can last varying from a few months to several years.
Early Acute phase CD4+ around 500 - week to months: flu like symptoms - raised lymph nodes, rashes,
An HIV infected person will begin manifesting symptoms like rashes, weakening of the muscles, sore throat, fever, mouth sores, and swelling of the lymph nodes. The infected person may also have an unexplained weight loss of less than 10% of total body weight.
CD4 count 200-500: ongoing skin issues, lymhadenopathy, opportunistic infections
Once this stage starts, the immune system will begin to produce antibodies that will battle the virus. The patient will experience weight loss more than 10% of total weight, unexplained diarrhea, pulmonary tuberculosis, and severe systemic bacterial infections such as pneumonia, meningitis, bone and joint infections, and bacteremia.
Advanced CD4<200 - AIDS - serious infections/skin mallignancies occur occur (Pneumocystis jirovecii pneumonia, Kaposi’s sarcoma),
How is HIV tested for?
1.EIA (4th gen combo assay):
Detects anti-HIV ab and detects P24 antigen, window period of 45 days (time taken for positive results following exposure)
- Confirmatory tests in lab positive - immunoblot, looks for other antigens
SECOND SAMPLE TO CONFIRM PATIENT ID
- RNA detection by PCR for ‘‘viral load’’ - MONITOR RESPONSE TO TREATMENT, <50 copies undetectable
There is a long list of AIDS-defining illnesses associated with end-stage HIV infection where the CD4 count has dropped to a level that allows for unusual opportunistic infections and malignancies to appear, what are some examples?
Kaposi’s sarcoma
Pneumocystis jirovecii pneumonia (PCP)
Cytomegalovirus infection
Candidiasis (oesophageal or bronchial)
Lymphomas
Tuberculosis
What tests are part of the HIV follow up?
CD4 count - indication of how advanced disease is
HIV viral load - aim undetectable (<50 copies)
HIV resistance testing (?which rx can we use)
How is the patient/baseline monitoring - FBC, U&E, LFT, bone profile, physical assement, fundoscopy, urine dip)
Screen for relevant infection - STIs, BBIs, TB in high risk groups, OI is advanced/symptoms
What tests are part of the HIV follow up?
CD4 count - indication of how advanced disease is
HIV viral load - aim undetectable (<50 copies)
HIV resistance testing (?which rx can we use)
How is the patient/baseline monitoring - FBC, U&E, LFT, bone profile, physical assement, fundoscopy, urine dip)
Screen for relevant infection - STIs, BBIs, TB in high-risk groups, OI is advanced/symptoms
HIV anti-viral therapy
Tripple anti-retroviral therapy: 3 drugs - x2 NRTI plus 3rd agent
Long acting injectables
Some newer 2 drug regimes emerging
How often are stable HIV patients monitored for viral load and routine bloods?
6 monthly
Key questions to ask an HIV pt about medications?
Which regime?
How long taking it?
Any missed pills?
Previous treatments/failure/resistance
Other medications incuding OTC/vitamins (may react)
How to prevent HIV transmission?
Condom use
Screening and regular testing (3/12 if high risk)
Treatment as prevention - U=U
PEP
PrEP
When can HIV post exposure prophylaxis be given following a high-risk exposure, what is given?
WIthin 72 hours
Truvada + Raltegravir for 28 days, available via A+E or sexual health services
Reccomended following receptive anal sex with known HIV partner or ?HIV partner
What is PrEP?
HIV pre-exposure prophylaxis
High risk patients eligble under NHS from sexual health centres, Truvada either given daily or ‘event based’
Reduces risk of acqusation of HIV
HIV vs AIDs?
HIV – Human Immunodeficiency Virus
AIDS – Acquired Immunodeficiency Syndrome
AIDS is usually referred to in the UK as Late-Stage HIV
What kind of virus is HIV and how does it cause pathology?
RNA retrovirus
The virus enters and destroys the CD4 T helper cells.
An initial seroconversion flu-like illness occurs within a few weeks of infection. The infection is then asymptomatic until it progresses and the patient becomes immunocompromised and develops AIDS-defining illnesses and opportunistic infections potentially years later.
How is HIV transmitted?
Unprotected anal, vaginal or oral sexual activity.
Mother to child at any stage of pregnancy, birth or breastfeeding. This is referred to as vertical transmission.
Mucous membrane, blood or open wound exposure to infected blood or bodily fluids such as through sharing needles, needle-stick injuries or blood splashed in an eye.
What is a normal CD4 count?
500-1200 cells/mm3 is the normal range
Under what CD4 count is considered end stage HIV / AIDS and puts the patient at high risk of opportunistic infections?
200 cells/mm3
How to BHIVA recommend HIV is treated?
a starting regime of 2 NRTIs (e.g. tenofovir and emtricitabine) plus a third agent
Highly Active Anti-Retrovirus Therapy (HAART) Medication Classes used to treat HIV?
Nucleoside Reverse Transcriptase Inhibitors (NRTIs) x2
+ 1 of
Protease Inhibitors (PIs)
Integrase Inhibitors (IIs)
Non-Nucleoside Reverse Transcriptase Inhibitors (NNRTIs)
Entry Inhibitors (EIs).CCR5 inhibitors
What drug can be given to patients prophylactically with a CD4 count below 200/mm3?
Prophylactic co-trimoxazole (Septrin) is given to patients with CD4 < 200/mm3 to protect against pneumocystis jirovecii pneumonia (PCP).
What risk factors should be monitored in patients with HIV due to their risk of developing complications with a particular body system?
Patients with HIV have close monitoring of cardiovascular risk factors and blood lipids and appropriate treatment (such as statins) to reduce their risk of developing cardiovascular disease.
How to prevent HIV transmission?
Condom use
Screening and regular testing (3/12 if high risk)
Treatment as prevention - U=U
PEP
PrEP
Where the affected partner has an undetectable viral load unprotected sex and pregnancy may be considered. It is also possible to conceive safely through techniques like sperm washing and IVF.
Caesarean section should be used unless the mother has an undetectable viral load. Vaginal birth may be considered where the viral load is undetectable. Newborns to HIV positive mothers should receive ART for 4 weeks after birth to reduce the risk of vertical transmission.
Breastfeeding is only considered where the viral load is undetectable however there may still be a risk of contracting HIV through breastfeeding.
Concerns re HIV and pregnancy/birth?
Where the affected partner has an undetectable viral load unprotected sex and pregnancy may be considered.
It is also possible to conceive safely through techniques like sperm washing and IVF.
Caesarean section should be used unless the mother has an undetectable viral load.
Vaginal birth may be considered where the viral load is undetectable.
Newborns to HIV positive mothers should receive ART for 4 weeks after birth to reduce the risk of vertical transmission.
Breastfeeding is only considered where the viral load is undetectable however there may still be a risk of contracting HIV through breastfeeding.