Connective tissue disorder Flashcards
When is the most common onset of SLE?
During reproductive years
Which races is SLE more common in?
- Afro-caribbean
- South Asian
- Mexican
Which sex is SLE more common in?
Females
What is the name of the classification of SLE?
•EULAR/ACR
What is the clinical presentation of lupus?
- Constitutional symptoms: weight loss, headache, pain, fatigue, loss of appetite, night sweats, and malaise
- Cutaneous manifestations
- Arthralgia (joint stiffness)
- Arthritis
What are the musculoskeletal signs of lupus?
- Synovitis
- Jaccoud’s arthropathy
- AVN, fibromyalgia and osteoporosis are all associated
Explain renal component of SLE
- 1/3-1/2 of patient’s will have renal involvement
- 20% will develop ESRF in 10 years
- Typically within first year or two
- Urinalysis, UEs, BP monitored at the clinic
- dsDNA- rise in titre can predict flares
- Renal biopsy may be helpful for the diagnosis, prognosis and determining treatment
Explain the pulmonary manifestations of SLE
- Pleurisy - pleuritic chest pain
- Pleural effusions
- Acute pneumonitis
- Diffuse alveolar haemorrhage
- Pulmonary hypertension
- Shrinking lung syndrome
Explain the cardiovascular manifestations of SLE
- Pericarditis +/- effusion
- Myocarditis
- Valvular abnormalities
- Coronary heart disease - high risk of morbidity and mortality long term
- Risk of MI 50x
Explain the neuropsychiatric manifestations of SLE
- 19 different manifestations
- Headache
- Anxiety and mood disorder
- Seizure
- demyelination
- GBS
- Mononeuritis
Explain the investigation of the manifestations of SLE
- EEG if seizures
- MRI
- LP to look for inflammatory cells
- Psychiatric evaluation
- Anti-ribosomal P - associated with mood disorders
What are the gastrointestinal manifestations of SLE?
- Uncommon, more likely to be effect due to medication
- Dysphagia
- Reduced peristalsis
- Peritonitis
- Pancreatitis
- Pseudo-obstruction
- Lupus hepatitis- biopsy is required
What are the haematological manifestations of SLE?
- Anaemia of chronic disease
- Autoimmune haemolytic anaemia
- Thrombotic thrombocytopenia purpura
- Leukopenia
- Can have an associated lymphadenopathy and splenomegaly
- Thrombocytopenia - mild or ITP
What is ANA and what is its significance in lupus?
- Anti-nuclear antibodies
- SLE is due to activation of invasive and adaptive immunity
- Interaction of self antigens on or released by apoptotic cells
- In SLE there is a breakdown in the ability to process debris from apoptotic cells, nuclear elements of cells are exposed and you can develop self antigens
- it a sensitive but not a specific test
If ANA is positive, what is it helpful to know?
Which of the antigens is affected
Ro/La
SLE, sjogrens
Ds-DNA
SLE
Sm
SLE
RNP
Mixed CTD
Centromere
Limited SScl