Final Flashcards
If an enteric organism (e.g. E.coli), or UTI is the most likely cause of epididymo-orchitis treat with [] (10 days) or [] (14 days).
If an enteric organism (e.g. E.coli), or UTI is the most likely cause - treat with levofloxacin (10 days) or ofloxacin (14 days).
How can PDR lead to blindness? [4]
- New blood vessels are very fragile; easily break and leak
- Retinal haemorrhage can lead to acute blindness
- If repeated; leads to fibrosis & scarring
- Can lead to: tractional retinal detachment: when scar tissue or other tissue grows on your retina and pulls it away from the layer underneath
What is the management of diabetic retinopathy? [5]
Laser photocoagulation
Anti-VEGF medications such as ranibizumab, bevacizumab & Aflibercept
Vitreoretinal surgery (keyhole surgery on the eye) may be required in severe disease or a vitrectomy may be necessary to clear severe vitreous hemorrhage or to relieve tractional retinal detachment.
Corticosteroids: (triamcinolone, dexamethasone implant) can also be used, particularly in refractory DME.
Pan-retinal photocoagulation (PRP): laser used to make small burns evenly across the peripheral retina - should make blood vessels shrink and dissapear
What is the most common cause of visual loss in patients with diabetes? [1]
Describe this [1]
Diabetic macular oedema (DMO)
DMO is the commonest cause of visual loss in patients with diabetes
DMO is characterised by oedematous changes in or around the macula. As the macula is responsible for central vision, affected patients tend to complain of blurred vision when reading or difficulty recognising faces in front of them. DMO is the commonest cause of visual loss in patients with diabetes.9
Treatment of mild [2], moderate [2] and severe [4] hypoglycaemia?
Mild:
Sugary drink, e.g. lucozade, ordinary coke, orange juice
5-7 glucose tablets, or 3-4 heaped teaspoons of sugar in water
Moderate:
Glucogel® – 1-2 tubes buccally (into cheek), or jam, honey, treacle massaged into the cheek.
Intramuscular glucagon if needed
Severe (unconscious)
Do not put anything in the mouth
Place the person in the recovery position Administer 0.5-1mg glucagon IM
If carer is unable to administer glucagon, call 999
In hospital, administer iv glucose:
- Ideally 75mls of 20% glucose or 150mls 10% glucose over 15 mins
- 50mls 50% glucose can be given, but take care with veins – extravasation can cause chemical burns
A patient with DMT2 is presenting with symptoms of gastroparesis.
What drug could you rec. to resolve this? [1]
First line treatment for this condition as recommended by NICE is with Domperidone, a dopamine receptor antagonist
Diagnosis of prediabetes involves specific criteria:
Impaired Fasting Glucose (IFG): Fasting blood glucose levels between [] mmol/L
Impaired Glucose Tolerance (IGT): Two-hour oral glucose tolerance test (OGTT) values between [] mmol/L
Diagnosis of prediabetes involves specific criteria:
Impaired Fasting Glucose (IFG): Fasting blood glucose levels between 6.1-6.9 mmol/L
Impaired Glucose Tolerance (IGT): Two-hour oral glucose tolerance test (OGTT) values between 7.8-11.1 mmol/L
One or more of which parameters would warrant referral to a high-dependency unit (level 2 care)? [7]
- Blood ketone > 6 mmol/L
- Bicarbonate level < 5 mmol/L
- pH < 7.0
- GCS ≤ 12
- Systolic BP < 90 mmHg
- Hypokalaemia on admission < 3.5 mmol/L
State 5 causes of drug induced diabetes [5]
Glucocorticoids
b-blockers
Thiazide diuretics
Tacrolimus (used in transplantation – may cause “New Onset Diabetes after Transplantation” [NODAT])
Atypical anti-psychotics – eg. olanzapine, risperidone, clozapine
Which drugs are contraindicated for patients with DMT2 who might also be suffering from:
Heart Failure [2]
CKD [1]
Frail / elderly [3]
Obesity [2]
Heart Failure:
- Pioglitazone: causes oedema as an AE
- Saxagliptin: increase risk of HF
CKD [2]
- Caution with SUs
Frail / elderly [3]
- SGLT2i (hypoglycaemia risk)
- GLPs (hypoglycaemia risk)
- Caution with SUs (hypoglycaemia risk)
Obesity
- SUs (weight gain)
- Pioglitzaone (weight gain)
Name three anti-VEGF medications used to treat diabetic retinopathy [3]
ranibizumab, bevacizumab & Aflibercept
What is the arrow pointing to? [1]
Cotton wool spot
Cotton wool spots appear as grayish/whitish spots with soft, fuzzy edges, giving them a resemblance to a ball of cotton wool. They do not usually appear in clusters like hard exudate.
Name this complication of diabetic retinopathy [1]
Diabetic retinopathy is one of several causes of neovascular glaucoma: a type of secondary glaucoma.
Neovascularization can occur within the iris and its trabecular meshwork (rubeosis) causing a narrowing and closure of the drainage angle and therefore increased intraocular pressure.
Describe basic overview on how you determine AF tx? [+]
First question: is patient haemodinamically stable?
* if no then DC
If yes, Two questions to ask:
* i. is patient >65 y/o?
* ii. Does patient has history of ischaemic heart disease?
If yes to ANY of the two questions then:
* first line Beta Blockers, second line digoxin
If no to BOTH then
* First line is fleccanide, second line ameodarone
Congenital adrenal hyperplasia is caused by a congenital deficiency of the which enzyme? (In most cases) [1]
21-hydroxylase
- In a small number of cases it is caused by a deficiency of 11-beta-hydroxylase rather than 21-hydroxylase.
What is the role of 21-hydroxylase? [1]
21-hydroxylase is the enzyme responsible for converting progesterone into aldosterone and cortisol.
Autoantibodies directed at the adrenal cortex to the autoantigens [] and [] can be seen in 70% of patients with idiopathic or primary Addison’s disease
Autoantibodies directed at the adrenal cortex to the autoantigens 21-hydroxylase and 17 alpha hydroxylase can be seen in 70% of patients with idiopathic or primary Addison’s disease
Which enzyme being suppressed / mutated causes syndrome of apparent mineralocorticoid excess? [1]
Why does that create symptoms of hyperaldosternism? [1]
When 11BHSD-2 enzyme is supressed/mutated - cortisol is NOT deactivated and will binds to MR.
symptoms of hyperaldosteronism
Name three causes of adrenal insufficiency caused infections [3]
Pseudomonas aeruginosa
Meningococcal infection
TB
A patient has recently started a new medication that has caused them to have decreased free T3/4 levels.
What medication could it be?
- Interaction with calcium carbonate
- Interaction with amlodipine
- Iodine deficiency
- Interaction with aspirin
- Poor adherence to levothyroxine
A patient has recently started a new medication that has caused them to have decreased free T3/4 levels.
What medication could it be?
Interaction with calcium carbonate
- Interaction with amlodipine
- Iodine deficiency
- Interaction with aspirin
- Poor adherence to levothyroxine
What is the most common endogenous cause of this Cushings?
Adrenal adenoma
Adrenal carcinoma
Glucocorticoid therapy
Micronodular adrenal dysplasia
Pituitary adenoma
What is the most common endogenous cause of this Cushings?
Adrenal adenoma
- adrenal adenoma (5-10%)
Adrenal carcinoma
Glucocorticoid therapy
Micronodular adrenal dysplasia
Pituitary adenoma
Describe the results from high-dose dexomethasone testing for Cushings syndrome, Cushing disease and ectopic ACTH [3]
State which pathologies MEN1 [3], MEN2A [3] AND MEN2B [3] relate to
MEN1: 3Ps-
* Pituitary
* Pancreas
* Parathyroid
MEN2a- 3Cs
* Calcitonin- medullary thyroid
* Calcium- parathyroid
* Catecholamines- phaeochromocytoma
MEN2b- big and belly (the big ones and in the tummy)
* Medullary thyroid
* Phaeochromocytoma
* Mucosal tumours- eg GI tract
How can you figure out if a patient has bilateral adrenal hyperplasia or renal artery stenosis causing Na++++ and K —-? [1]
Renal artery stenosis will have a raised renin