What is Trichomonas Vaginalis?
T vaginalis infection is the most common nonviral STD in the world.
Many patients (20-50%) are asymptomatic.
If discharge is present, it is usually copious and frothy and can be white, gray, yellow, or green (the yellow and green colors are due to the presence of white blood cells [WBCs]). Local pain and irritation are common.
What are the risk factors of OP?
Epidemiological / Anthrolpological Risk Factors
Lifestyle Risk Factors
Medications / Disease Processes Risk Factors
What is a T score?
What is a Z score?
Which is used for the diagnosis of OP?
What is the other used for?
A T score is the number of standard deviations from the BMD of a young healthy adult (30 y.o.)
A Z score is the number of SDs you are from the BMD of someone your age and sex.
A T score is used in the diagonsis of osteopenia / osteoporosis
How do you diagnose OP and osteopenia?
DEXA scan
T score between -1 and -2.5 = osteopenia
Z score less than -2.5 = OP
what might artefactually increased BMD on a DEXA scan?
OA
Fracture
Deformity
What are the differential diagnoses of pathalogical fractures?
‘MR PPP MMM’
Malacia (Adults) / Rickets (Paeds) - vitamin D not mineralizing bone
Porosis / Penia - osteoclastic reabsorption of bony architecture
Pagets - abnormal osteoclasts, intense resorption of bone
Parathyroidism - primary, secondary
Malignant invasion - (think of hexagon: thyroid, breast, lung, kidneys, prostate)
MGUS / MM
Medication - steroids, anti-convulsants
What investigations would you order for someone with a pathological fracture?
Labratory Tests
Imaging
Describe your management of OP (which has been diagnosed on DEXA and without any pathalogical fracture)
Basics
Place & Person
Ix and Confirm Diagnosis
FRAX Risk Ax Tool - gives a 10 year probabilty of major osteoporotic fracture
Definitive Management
Referral
What is the mechanism of action of bisphosphonates?
What routes are they given in?
what are the AE of bisphosphonates?
What should you tell the patient?
Bisphosphonates inhibit osteoclastic activity.
They can be given as a weekly tablet or yearly IV (Zoledronic acid).
The AE of bisphosphonates are oesophagitis are:
You should tell the patient
when are bisphosphonates contraindicated? what is second line?
poor renal function
if this is the case –> denosumab
how is densoumab administered and what is its side effects?
6 monthly SC injection
Osteonecrosis of the Jaw
Atypical fractures
in whom may raloxifene be used when treating OP?
what is it’s MOA?
what is it’s AE?
women, usually younger post-menopausal women with spinal OP, especially in those with a high breast-Ca risk.
it is a SERM.
It has the same AE as other HRT, but it REDUCES the risk of breast cancer. It also can exacerbate vasomotor symptoms. It has been shown to increase spinal BMD but not femoral neck or elsewhere.
what is the MOA of teraperatide and who can prescribe it?
a PTH analogue
when given in a pulsatile fashion (daily SC injections) it increases BMD
it can only be prescribed by a specialist
it only increases vertebral BMD, not femoral
what is the mechanism of action of strontium ranelate?
Strontium, which has the atomic symbol Sr and the atomic number 38, belongs to the group II in the periodic table of the elements, just beneath calcium. Because its nucleus is very nearly the same size as that of calcium, the body easily takes up strontium and incorporates it into bones and tooth enamel in the place of calcium
which STI is usually asymptomatic?
chlamydia
If a male has uretheral disachrge, what should you test for?
Gohonorrhea
Chlamydia (even though usually symptomatic, is more common than gonorrhea)
how often should one be screened for chlamydia?
yearly from aged 15-30 if they are sexually active
how does chlamydia normally present?
normally asymptomatic
discharge from penis / vagina
pain during urination
pain during sex
What are the complications of chlamydia in men and women?
Men
Women
Which STI can cause a reactive arthritis and in which sex?
chlamydia
reactive arthritis caused by chlamydia is more common in men than in women
What is the management of chlamydia?
Basics
Place & Person
Investigate & Confirm Diagnosis
Definitive Management
Follow-Up
how do you investigate for chlamydia?
NAAT
Method of collection:
what is the typical presentation of gohnorrhea in men?
and in women?
Man with copious urethral discharge 2-10 days after unprotected sex (although chlamydia is still more common than gonorrhea, so still more likely to be chlamydia).
Women are usually asymptomatic or present with vague symptoms mimicking a UTI.
What is required to investigate for gonorrhea?
NAAT. Specimen collected by
Also investigate for chlamydia if you suspect gonorrhea!