6: Leg ulcers Flashcards
What is a chronic leg ulcer?
Break in the skin below the knee which hasn’t healed in 4 weeks
Why may the skin break below the knee?
Insect bite
Trauma
Scratching
Most leg ulcers are (arterial / venous).
Venous
How are venous leg ulcers treated?
Compression leggings
Which chronic inflammatory disease can be responsible for leg ulcers?
Rheumatoid arthritis
Which endocrine disease is common in patients with leg ulcers?
Diabetes
The prevalence of leg ulcers increases with ___.
age
Most leg ulcers are cared for in (primary/secondary) care.
primary care
What are some symptoms of leg ulcers which can impair a patient’s quality of life?
Pain
Leakage
Smell
> Infection
> Ostracised
In only which situation should antibiotics be used to treat leg ulcers?
Infection
Should compression socks be used in someone with arterial disease?
No
Apart from venous and arterial, what types of leg ulcer can you get?
Mixed
Vasculitic
Malignant
Inflammatory
“Hydrostatic” in bedridden patients
Why is it important to ask about medication in a history of a patient with leg ulcers?
Immunosuppressors slow down healing
Oral prednisolone does the same
Nicorandil - ??
What aspects of a social history are important in assessing a patient with leg ulcers?
Smoker?
Occupation - people on feet all day
Mobility
Sleep disturbance
What analgesic drugs should be given to patients with painful leg ulcers?
Paracetamol
Codeine - causes constipation
What questions should be asked about pain in a patient with leg ulcers?
Just moving or at rest?
How is it in bed?
Adaptive behaviour e.g hanging legs out of bed
What are cutaneous signs of venous disease?
Varicose veins
Haemosiderin stains - brown stains due to breakdown of Hb
Blue feet - due to DISTENDED veins, not ischaemia
What index is used to determine the extent of peripheral vascular disease?
ABPI
What is often mistaken for bilateral cellulitis in the legs of people with ulcers?
Varicose eczema / venous dermatitis
How is venous dermatitis treated?
Topical steroids
Compression (for ulcer)
Ulcers in the feet, toes and areas of pressure like the sole of the foot are likely to be ___.
Ulcers in the gaiter area (from the malleolus to below the knee) are likely to be ___.
arterial
venous
What kind of bandaging is done to protect leg ulcers?
4 layer bandaging
What, apart from peripheral vascular disease, may occur in the gaiter area which gives rise to a venous ulcer?
Insect bite
What does an arterial ulcer look like?
Deep, punched out
Not weepy
Necrotic base
If a patient has to swing their leg over the bed to get relief from ulcer pain, what type of ulcer is it?
Arterial
If a leg ulcer presents with loads of telangectasia and a plaquey border, what type of ulcer is it?
Diabetic ulcer
i.e necrobiosis lipoidica
What is pyoderma gangrenosum?
Inflammatory disease causing ulceration
associated with Crohn’s, RA, other inflammatory disease
What colour do pyoderma gangrenosum ulcers tend to be?
Purple
How is pyoderma gangrenosum treated?
Topical steroid
?compression
What are some features of vasculitis?
Painful
Acute onset
Purpuric rash / pustules (blood vessels burst)
Necrosis
What test should be carried out if you’re not sure whether ulcers are venous or arterial?
ABPI
What non-pigmented lesions can present as leg ulcers?
BCCs
SCCs
If compression socks aren’t making any difference to a venous ulcer, what must be suspected?
Skin cancer i.e BCC/SCC
What investigation is used to check if there is arterial disease in a patient’s leg?
ABPI
When should an ulcer be swabbed?
Signs of infection, i.e:
painful, exudate, malodour, swlling
What blood tests should be taken?
Full blood count
LFTs
U+Es
CRP
What test should be done to see if a patient is allergic to materials used in dressings/bandages/creams?
Patch testing
SIGN guidelines for compression (ABPI values)
- 0 = normal
- 8 - 1.2 = compress
< 0.8 = vascular disease
> 1.5 = calcification
What exactly is ABPI?
Ratio of:
highest systolic ankle pressure / highest systolic brachial pressure
What is used to de-slough ulcers i.e get rid of the dead cells and other debris?
Honey
Hydrogels
If honey/hydrogels aren’t working, how else can a wound be debrided?
Scissors/scalpel
Larvae(?!?!?!?!?!?)
Surgery
How should leg ulcers be washed?
Warm tap water and soap (substitute)
What shape should the padding around the leg be prior to bandaging?
Cone-shaped