Endocrine Flashcards
Modifiable risk factor for Grave’s?
Smoking
Management of an asymptomatic patient with raised HbA1c?
Repeat test to confirm diagnosis
Management of fluids in SIADH?
Fluid restriction
What 3 endocrine parameters decrease in stress response?
Insulin
Testosterone
Oestrogen
ABG in Cushing’s?
Hypokalaemia metabolic alkalosis
Which diabetic drug has increased risk of bladder cancer?
Pioglitazone (thiazolidinediones)
Management of Grave’s disease in pregnancy?
Propylthiouracil
Biochemistry in primary hyperparathyroidism?
Raised ALP, PTH
Low PO4
Cause of tertiary hyperparathyroidism?
Ongoing hyperplasia of parathyroid glands following correction of underlying cause
Differentiation between primary and secondary hyperaldosteronism?
Primary = normal renin
Secondary = raised renin
Thyroxine in osteoporosis ?
Increase replacement dose
Uptake of iodine-131 on thyroid scintigraphy in De Quervian’s (subacute) thyroiditis?
Decreased
TFTs in sick euthyroid syndrome?
TSH: normal
T3&4: low
SIADH urine osmolality and urinary sodium?
Raised urinary osmolality
Raised urinary sodium
(management with fluid restriction)
TFTs in nephrotic syndrome?
May be isolated low total thyroxine level
Type of diabetes that Lithium causes?
Nephrotic Diabetes Insipidus
In DM with CVD, high risk of CVD or CHF, what 2 drugs should be prescribed initially?
Metformin and SGLT-2 inhibitors (empagliflozin)
SGLT2 inhibitors example?
Gliflozins
SE of SGLT2 inhibitors?
Thrush
Noroglycaemic ketoacidosis
Fournier’s gangreen
SE of pioglitazone and therefore when is it contraindiacted?
Fluid retention in HF
Where do antibodies target in pemphigus vulgarism?
Desmosomes (connect cells)
Easily ruptured vesicles
Common in Ashkenazi Jewish population
False raised HbA1c?
Splenectomy (due to increased lifespan on RBCs)
Thyroid cancer with excellent prognosis?
Papilliary (even though early spread to cervical lymph nodes)
Initial therapy in DM2 with metformin an SGLT2?
Ensure metformin is titrated up first, then start SGLT2 regardless of glycemic control
Example of DPP4 inhibitor?
Sitagliptin
Saxagliptin
Diagnostic marker for carcinoid syndrome (24 hour urinary collection)?
5 HIAAA (5-hydroxyindolacetic acid)
Use of ocreotide?
Acromegaly
Symptom control (diarrhoea) of carcinoid tumours
When do you treat sub-clincal hypothyroidism?
When TSH is > 10 on 2 separate occasions, 3 months apart
Trousseau’s sign?
Carpal spasm if the brachial artery occluded by inflating the blood pressure cuff and maintaining pressure above systolic
Chvostek’s sign?
Tapping over parotid causes facial muscles to twitch
What causes patchy uptake on scintigraphy?
Toxic multinodular goitre
Addison’s patient with intercurrent illness?
Double hydrocortisone
Same fludricortisone
Why do you get a postural drop in DM?
Autonomic dysfunction
When should insulin-dependent diabetic check their blood glucose with regards to driving?
Before driving and every 2 hours regardless of whether they have eaten or not
Levothyroxine and pregnancy?
Women with hypothyroidism may need to increase their thyroid hormone replacement dose by up to 50% as early as 4-6 weeks of pregnancy
Inheritance of MODY?
Autosomal dominant
Acropatchy?
Clubbing with hyperthyroidism (Grave’s disease)
Iodine uptake in Grave’s disease?
Increased homogenous uptake
Increased IGF-1 on bloods, what investigation do you do next to confirm diagnosis?
OGTT with serial GH measurement
DVLA and dm patient with 2 hypoglycaemic episodes requiring help?
Need to surrender their driving licence
Impaired fasting glucose definition?
A fasting glucose greater than or equal to 6.1 but less than 7.0 mmol/l implies impaired fasting glucose (IFG)
Impaired glucose tolerance (IGT) is defined as fasting plasma glucose less than 7.0 mmol/l and OGTT 2-hour value greater than or equal to 7.8 mmol/l but less than 11.1 mmol/l
What should people with impaired glucose tolerance receive?
Oral glucose tolerance test to rule out a diagnosis of diabetes
A result below 11.1 mmol/l but above 7.8 mmol/l indicates that the person doesn’t have diabetes but does have IGT
Whipple’s triad?
Insulinoma
1. Hypoglycaemia with fasting or exercise
2. Reversal of symptoms with glucose
3. Recorded low CBG at time a symptoms
C-peptide raised?
Insulin produced by own pancreas
If c-peptide not raised = exogenous insulin
Sevelamer?
Non-calcium based phosphate binder, used in CKD mineral bone disease
Platelets in alcoholics?
Decreased
Men I
3 p’s
Pituitary
Pancreas
Parathyroid
Men 2
Phaeochromocytoma
Parathyroid
Medullary thyroid cancer