Endo Flashcards
what is the first line and diagnostic test for acromegaly ?
1st line - serum IGF-1
diagnostic - OGTT
what is sick euthyroid syndrome
Low T3/T4 alongside an inappropriately normal TSH in an acutely unwell patient.
what is the initial management of hyperglycaemic hyperosmolar state
IV fluids
what is the first line management of a DKA ?
Isotonic saline
which medications are helpful in the management of diabetic patients who are obese
DPP-4 Inhibitor ( Sitagliptin)
what is the diagnostic test for Graves disease
TSH hormone receptor antibodies
what is the most common cause of thyrotoxicosis
Graves
whats the most common cause of primary hyperaldosteronism
Bilateral idiopathic adrenal hyperplasia
give 2 features of Primary hyperaldosteronism
HTN + Hypokalaemia
what test can be used to distinguish the different types of diabetes
C-Peptide - will be low in T1DM and normal / high in T2DM
when should an SGLT-2 be added to metformin ? Do you need to make any changes to the metformin when you do this
- high risk of CVD
-established CVD - Chronic HF
- titrate metformin up first
What is the pattern in which diabetic neuropathy occurs
sensory loss in a ‘‘glove and stocking’’ distribution with the lower legs affected first - symmetrical and then spreading upwards
first line management of diabetic neuropathy
amitryptiline, duloxetine, gabapentin, pregabalin
which is the most sensitive test to diagnose cushings syndrome
low dose overnight dexamethasone suppression test
which is the most sensitive test to distinguish between the causes of cushings
high dose dexamethasone test
what is the first line management of hypoglycaemia
oral glucose 10-20 g in liquid gel or tablet form
what is the management of hypoglycaemia in an unconscious patient
subcutaneous / IM Glucagon
IV 20% GLUCOSE through a large vein
whats the criteria for hypoglycaemia
< 3.9 mmol/L
how do you manage changes in eye vision with thyroid disease
urgent refferal to specialist
which is the most important modifiable risk factor for the development of thyroid eye disease
smoking
what is the management of thyroid eye disease
topical lubricants
steroids
radiotherapy
surgery
what are the features of an Addisonian crisis
hyponatraemia
hypotension
hypovolaemia
hyperkalaemia
give 3 causes of an adrenal crisis
sepsis / surgery
adrenal haemorrhage
steroid withdrawal
how do you manage an addisonian crisis
hydrocortisone 100 mg im/iv
name 2 main side effects of sulfonylureas
hypoglycaemia
weight gain
when should sulfonylureas be avoided
breastfeeding, pregnancy
what is the first line investigation in suspected primary hyperaldosteronism
aldosterone / renin ratio
2 key features of hyperaldosteronism
htn and hypokalaemia
most common cause of primary hyperaldosteronism
bilateral idiopathic adrenal hyperplasia
how does a myxoedema coma present
confusion and hypothermia
how do you manage a myxoedema coma
IV Thyroid replacement
IV Fluid
IV Corticosteroids
electrolyte imbalance correction
at what rate should you prescribe insuline ( DKA)
0.1 unit / kg/ hour
which type of fluid is used in fluid resuscitation in DKA
Isotonic saline
_________ diabetes medication are associated with an increased risk of UTI’s and thrush
SGLT-2 inhibitors ( flozin ending)
which diabetes medication is linked to fourniers gangrene
SGLT-2 inhibitor
how does an SGLT-2 inhibitor act
inc glucose reabsorption , increase urinary glucose excretion
which diabetes medication is recommended for weight loss
SGLT-2
which conditions are not suppressed by the high dose dexamethasone suppresion test
cushings syndrome, ectopic ACTH syndrome
differentiate between Obese class 1,2,3
1 - 30 to 35
2- 35 to 40
3- >40
specific features seen in Graves disease
exophthalmos
pretibial myxoedema
which antibodies are present in Graves disease
TSH receptor stimulating antibodies
anti thyroid peroxidase antibodies
how is addisons disease managed
Hydrocortisone and fludrocortisone
what is given to diabetic patients on insulin for emergencies
glucagon kit
definitive management of primary hyperparathyroidism
total parathyroidectomy
how do you manage steroid dose in addisons patient with recurrent illness
double hydrocortisone
keep fludrocortisone the same
what is central pontine myelinolysis and why does it occur
it occurs when you give insulin in hyperglycaemic hyperosmolar state which causes dramatic fluid shift between compartments leading to central pontine myelinolysis. presents as dysarthria, reduced consciousness, dysphagia
what is the first line treatment for Acromegaly ?
Trans-Sphenoidal surgery
which 3 classes of medications can be used in the management of acromegaly ? Give examples
Somatostatin analogue : Octreotide
GH receptor antagonist : Pegvisomant
Dopamine agonist : Bromocriptine
In type 1 diabetes what HBA1C target should be used ?
48 mmol/mol
what is the definitive management of primary hyperparathyroidism ?
Total parathyroidectomy
what is the Hba1c target for patients on a drug which may cause hypoglycaemia ?
Sulfonylureas
how is an adrenal crisis managed
IM Hydrocortisone
name 4 drug causes of raised Prolactin
Metoclopramide
Domperidone
Phenothiazines
Haloperidol
How do you manage a DKA patient who’s ketonaemia and acidosis has not been resolved in 24 hours
Review by senior endocrinologist
how is mastoiditis diagnosed
clinical diagnosis
CT only if complications suspected
hashimotos diseases carries a small increased risk of which cancer
thyroid lymphoma
what is the diagnostic criteria for hyperglycaemic hyperosmolar state
Hypovolaemia
Marked Hyperglycaemia ( 30 mmol / L)
significantly raised serum osmolarity ( > 320 mosmol/kg)
no significant hyperketonaemia or acidosis
what is the management of hyperglycaemic hyperosmolar state
Fluid replacement ( IV 0.9% sodium)
insulin : only give if blood glucose stops falling while giving fluids
VTE prophylaxis
what are drug causes of raised prolactin
Metoclopramide + domperidone
phenothiazines
Haloperidol
rarely : SSRI, opiates
when should SGLT 2 inhibitors be the second line management for diabetes
- Patient has a high risk of developing CVD
-patient has established CVD
-Patient has chronic HF
what is the difference primary and secondary prevention when prescribing a statin
primary prevention
10 year cardiovascular risk => 10 % OR most type 1 diabetes OR CKD if eGFR < 60 m//min/m2
give atorvastatin 20 mg OD
Secondary prevention
Known ischaemic heart disease OR cerebrovascular disease OR peripheral arterial disease
atorvastatin 80 mg OD
What acid base disturbances are seen in Cushing’s syndrome
hypokalaemia metabolic alkalosis
how do you manage a patients insulin when they have diabetic ketoacidosis
continue long acting insulin
stop short acting insulin
what are the side effects of thyroxine therapy
hyperthyroidism = due to overtreatment
Reduced bone mineral density
worsening of angina AF
how can an ectopic source of ACTH present
Hypokalaemia - muscle, weakness and lethargy
metabolic alkalosis
glucose intolerance
Lymphoedema
chest pain
explain the results of water deprivation test and desmopressin test in diabetes insipidus
nephrogenic DI : low urine osmolality after water deprivation and low urine osmolality after desmopressin
cranial DI : low urine osmolality after deprivation and high urine osmolality after desmopressin
what is the hormonal picture of Klinefelter’s syndrome
elevated gonadotrophs but low testosterone
what is the most appropriate investigation for patients with increased urinary cortisol and low plasma ACTH levels
CT adrenals
when does the BNF suggest gradual removal of systemic steroids ? at what frequency
received > 40 mg prednisolone daily for > 1 week
received > 3 weeks of treatment
recently received repeated courses
reduce weekly
what are the side effects of SGLT-2 inhibitors ?
urinary and genital infection
Fournier’s gangrene
normoglycemic ketoacidosis
Increased risk of lower limb amputation - monitor feet closely
what is the action of SGLT-2 inhibitors ?
reduce glucose reabsorption and increase urinary glucose excretion
acting in the renal proximal convoluted tubule
what is the definitive investigation of Addison’s disease ?
ACTH stimulation test - short synacthen test
How is the diagnosis of Type 2 diabetes mellitus made in a symptomatic patient ? Is this different in an asymptomatic patient ?
fasting glucose >= 7.0 mmol/l
random glucose >= 11.1 mmol/l
Same criteria but must be demonstrated on 2 occasions
what are the causes of an Addisonian crisis ?
Sepsis / surgery causing acute exacerbation of chronic insufficiency ( Addisons, Hypopituitarism)
how do you manage an Addisonian crisis ?
Hydrocortisone 100 mg iv/im
saline 1 l over 30-60 mins / dextrose if hypoglycemic
What causes a lower than expected level of HbA1c ?
SCA
G6PD deficiency
hereditary spherocytosis
haemodialysis
what causes a higher than expected level of HbA1C
vit b12 / folic acid deficiency
IDA
splenectomy
what is gastroparesis ? When does it occurs + what are its symptoms + management ?
It occurs secondary to autonomic neuropathy and symptoms include erratic blood glucose control, bloating and vomiting.
management includes metoclopramide, domperidone or erythromycin
what is the most common cause of hypercalcaemia ?
primary hyperparathyroidism
what is the most common cause of primary hyperparathyroidism
parathyroid adenoma