HIGH WEIGHTING - Endocrine System Flashcards
What is Type 1 Diabetes Mellitus?
Autoimmune condition
- destroys beta pancreatic cells
- prevents insulin production
Symptom onset is FAST
What is Type 2 Diabetes Mellitus?
Develops over time
- exacerbated by lifestyle factors (wt, diet, exercise)
Body still produces insulin but cells become increasingly resistant to it
Symptom onset is SLOW
What HbA1c levels are indicative of diabetes?
> 47mmol/L
What HbA1c levels are indicative of pre-diabetes?
42-47mmol/L
What HbA1c levels are indicative of NO diabetes present?
<42mmol/L
Which disease causes hypERthyroidism?
Graves disease
What are some presenting symptoms of Graves disease?
- Thickening of skin (particularly on shins) - Graves Dermopathy
- Bulging eyes (retracted eyelids)
- Eye redness
What causes the thickening of skin and bulging eyes in Graves disease?
Thyroid Stimulating Immunoglobulin
What are the pharmacological management options for Graves disease?
(1) TITRATION: Start with antithyroid drugs and titrate to lowest effective dose
(2) BLOCK & REPLACE: Start with high dose antithyroid drugs and use levothyroxine to replace thyroid hormones and stop hypothyroidism.
Which pharmacological treatment of Graves disease is preferred in pregnancy?
Titration
As ‘Block & Replace’ requires very high levels of antithyroid drugs
What are the antithyroid drugs used in pharmacological management of Graves disease?
- Carbimazole
- Propylthiouracil
- Propranolol (provides relief of adrenergic symptoms)
What is the normal dosing of carbimazole?
20-60mg in divided doses
Once euthyroid, reduce by 5-15mg gradually
For 12-18 months duration
What is the normal duration of carbimazole treatment?
12-18 months
What are the main side-effects of carbimazole?
- Bone marrow disorders (neutropenia & agranulocytosis)
- Acute pancreatitis (discontinue permanently - MHRA warning)
- Stomach irritation
- Rash
What is an MHRA warning for carbimazole?
- Risk of acute pancreatitis
- Increased risk of congenital malformations, strengthened advice on contraception
What are the counselling points for carbimazole?
- Can reduce number of WBCs in the body
- Important that they are able to recognise symptoms
- See GP if experiencing the following:
- Sore throat
- Temperature ≥37.5ºC (fever)
- Unexplained bruising
- Mouth ulcers
What is the usual dosing of propranolol in thyrotoxicosis?
10-40mg TDS or QDS
What are some cautions for beta-blockers?
- Asthma
- Diabetic patients (can mask symptoms of hypoglycaemia)
What is the STOPP criteria for beta-blockers?
- Combinatory use with verapamil/ diltiazem (risk of heart block)
- Bradycardia
- Diabetes mellitus
- Non-selective beta-blockers in patients with asthma
What is a drug that can commonly induce hypERthyroidism?
Amiodarone
- iodine rich, can cause thyroid dysfunction
Can also causes hypOthyroidism
What is a drug that can commonly induce hypOthyroidism?
Amiodarone
- iodine rich, can cause thyroid dysfunction
Can also causes hypERthyroidism
What is hypOthyroidism?
Impaired production of T3 and T3
What are some symptoms of hypOthyroidism?
- Cold intolerance
- Tiredness
- Constipation
- Depression
- Wt gain
What are some symptoms of primary hypOthyroidism?
- Iodine deficiency
- Hashimoto’s
- Physical damage
- Drug induced
- Transient
What are some symptoms of secondary hypOthyroidism?
- Pituitary/ hypothalamic disorder
- Tumours
- Surgery
What is Hashimoto’s disease?
Autoimmune disease
Thyroid follicular cells gradually destroyed by lymphocytes
Goitre can form due to thyroid enlargement
What is primary hypOthyroidism?
Thyroid gland unable to produce hormones
What is secondary hypOthyroidism?
Result of insufficient production of bioactive TSH
What is an MHRA warning for levothyroxine?
Patients can react very differently to different brands of levothyroxine
If a patient says they can only take ONE brand, only give that brand
What are some monitoring requirements for levothyroxine?
Measure TSH every 3 months until stabilised
What are some side-effects of levothyroxine?
SYMPTOMS OF HYPERTHYROIDISM:
- Diarrhoea
- Nervousness
- Rapid pulse
- Insomnia
- Tremors
- Anginal pain (if latent myocardial ischaemia)
How should side-effects of levothyroxine be managed?
(1) Reduce dose
(2) Withhold for 1-2 days + restart at lower dose
What is the HPA-axis?
Hypothalamic Pituitary Adrenal Axis
Central stress response system
What are some short term stress responses of the sympatho-adrenomedulary system?
- Increased HR
- Increased BP
- Conversion of glycogen to glucose in the liver
- Bronchiole dilation
- Changes in blood flow patterns (increased alertness, increased metabolic rate, decreased urine output, decreased digestive system activity)
Where is ACTH released?
Anterior pituitary
What stimulates the production of ACTH?
CRH
Where are glucocorticoids produced?
Adrenal cortex (stimulated by ACTH)
What is Addisons disease?
Form of adrenal insufficiency
What are some long term stress responses of the HPA-axis?
- Retention of Na+ & water by kidneys
- Increased blood volume & blood pressure
- INCREASED:
- Gluconeogenesis
ø Fat & protein mobilisation - DECREASED:
ø Insulin sensitivity
ø GH & T3
ø Immune/ inflammatory response
How is Addisons disease managed?
Treatment initiated and monitored by a specialist endocrinologist
- Glucocorticoid: Hydrocortisone (can also use prednisolone/ dexamethasone)
- Mineralocorticoid: Fludrocortisone (50-300micrograms daily)
What are the sick day rules for Addisons disease?
- Double normal dose of hydrocortisone for a fever or infection/ sepsis requiring ABx
- Severe nausea: Take 20mg hydrocortisone & rehydrate using fluids/ electrolytes
- D + V/ serious illness: Emergency 100mg hydrocortisone injection immediately, then call doctor saying:
øAdrenal crisis
ø Addisons emergency
ø Steroid-dependent patient - Serious injury: 20mg hydrocortisone (to avoid shock)
What should be done for an Addisons patient experiencing diarrhoea/ vomiting OR a serious illness?
(1) Use emergency hydrocortisone 100mg injection immediately
(2) Call doctor
(3) Say: ‘adrenal crisis’ OR ‘Addisons emergency’ OR ‘steroid-dependent patient’
What is Cushing’s disease?
Increased secretion of ACTH from pituitary gland
Leads to too much cortisol
What most commonly causes Cushing’s disease?
Pituitary adenoma (~80%)
What are some common signs and symptoms of Cushing’s disease?
- Wt gain
- High BP
- Excess hair growth (women)
- Irritability
- Poor short-term memory & concentration
- Impaired immunological function
- Red face
- Extra fat around neck
- Fatigue
- Moon face
- Red stretch marks
- Irregular menstruation (women)
How is Addisons disease diagnosed?
Short Synthacten Test
How is Cushing’s disease diagnosed?
DEXAMETHASONE SUPPRESSION TEST:
(1) Overnight test
(2) Two-day, low-dose test
(3) Two-day, high-dose dexamethasone suppression test
What are the main treatment options for Cushing’s disease?
(1) Endoscopic surgical resection
(2) Pituitary radiation therapy
(3) Bilateral adrenalectomy
What are some pharmacological management options for Cushing’s disease?
(1) Mifepristone
(2) Ketoconazole
(3) Mitotane
What are the parathyroid glands?
Produces parathyroid hormone (PTH)
Four of these glands on the posterior of the thyroid
What does parathyroid hormone (PTH) do?
Helps to maintain calcium homeostasis
What is hyperparathyroidism?
Autonomous overproduction of parathyroid hormone
Results in hypercalcaemia (pulling calcium out of the bones + into the blood)
What are some signs and symptoms of hyperparathyroidism?
- Digestive system:
ø Loss of appetite
ø Constipation
ø N + V - Nervous system:
ø Fatigue
ø Depression
ø Confusion - Musculoskeletal system:
ø Muscle weakness
ø Aches + pains - Urinary system:
ø Increased thirst
ø Increased urination
ø Kidney stones
When is management of hyperparathyroidism required?
- Thirst
- Excessive urination
- Constipation
- Osteoporosis/ fragility fracture
- Renal stones
What is the pharmacological management of hyperparathyroidism?
(1) Bisphosphonates - reduce fracture risk
(2) Cinacalcet - reduce blood plasma levels of Ca2+
Why does hypercalcaemia need to be managed effectively?
Can cause coma + increased mortality
What is secreted by the adrenal glands?
(1) Mineralocorticoids
(2) Glucocorticoids
(3) Androgens
(4) Stress hormones (adrenaline/ noradrenaline)
What does ACTH do?
Stimulates the adrenal cortex
What does ACTH do?
Stimulates the adrenal cortex
What is the adrenal medulla responsible for?
Short-term stress response
What is the adrenal cortex responsible for?
Long-term stress response
Which type of endocrine patients should carry a steroid alert card, as per NPSA alerts?
Addisons disease
To support early identification & treatment of adrenal crisis
Endocrine System
What is diabetes insipidus?
Too little ADH
Excess thirst and excess dilute urine
Endocrine System
(1) What are the types of diabetes insipidus? (2) What are their treatments?
(1)
- Cranial - pituitary
- Nephrogenic - partial
(2)
Pituitary - vasopressin/ desmopressin
Nephrogenic - thiazide diuretic
Endocrine System
What are some benefits of desmopressin over vasopressin?
- more potent and longer duration
- no vasoconstrictor effect
Endocrine System
What are some side effects of desmopressin?
- Hyponatraemia - if given too rapidly - can increase risk of convulsions
- Nausea
Endocrine System
What is SIADH?
Syndrome of inappropriate antidiuretic hormone secretion
Leads to hyponatraemia, due to reduced urination diluting salt concentration in the blood
Endocrine System
What is the treatment of SIADH?
(1) Fluid restriction
(2) Demeclocycline - blocks renal tubular effect of ADH
(3) Tolvaptan - vasopressin antagonist
Endocrine System
Why should rapid correction of hyponatraemia with tolvaptan be avoided?
Causes osmotic demyelination - serious neurological events
Endocrine System
What are some risk factors for osteoporosis?
- postmenopausal women
- men over 50yrs
- patients taking long term corticosteroids
- age increase
- lack of exercise
- vit D/ calcium deficiency
- low BMI (underweight)
- smoking/ drinking
- Hx of fractures
- early menopause
Endocrine System
What are some lifestyle changes for management of osteoporosis?
- increase exercise
- smoking cessation
- maintaining an ideal BMI
- reduce alcohol intake
- increase intake of vit D and calcium (can use supplements)
Endocrine System
What HRT can be used peri-menopause?
Oestrogen
Endocrine System
What HRT can be used post-menopause?
Tibolone/ oestrogen
Endocrine System
What is the first line treatment for osteoporosis?
Oral bisphosphonates (alendronic/ risedronate)
Endocrine System
What alternative therapies are available for postmenopausal osteoporosis?
- ibandronic acid - 150mg once a month
- denosumab
- raloxifene
Endocrine System
What can be used for severe osteoporosis in post-menopausal patients?
- Teriparatide - total of 2yrs
- romosozumab
Endocrine System
What is the recommendation if a patient experiences one severe or two moderate-low trauma vertebral fractures, for osteoporosis?
Teriparatide/ romosozumab recommended over oral bisphosphonates
Endocrine System
What are some alternative therapies for osteoporosis in men?
Zoledronic acid/ denosumab/ teriparatide
Endocrine System
What is the treatment for glucocorticoid-induced osteoporosis?
- zoledronic acid
- denosumab
- teriparatide
Endocrine System
When is a treatment review for osteoporosis required?
5yrs
3yrs for zoledronic acid
Endocrine System
When should prophylaxis of osteoporosis at glucocorticoid treatment onset be started?
(1) Women:
- 70yrs or older
- previous fragility fracture
- large doses of glucocorticoid (e.g. >7.5mg prednisolone daily - or equivalent)
(2) Men >70yrs AND previous fragility fracture OR large doses of glucocorticoids
(3) Large dose corticosteroids for >3 months
Endocrine System
What are some MHRA warnings for bisphosphonates?
(1) Atypical femoral fracture
(2) ONJ - osteonecrosis of the jaw
(3) Osteonecrosis of the external auditory canal
Endocrine System
What are some side effects of bisphosphonates?
- oesophageal reactions
Endocrine System
What is the administration advice for alendronic acid?
Take 30 minutes before breakfast/ other oral medications
Take with a full glass of water while standing
Remain upright for 30 minutes after
Endocrine System
How does the administration advice for risedronate sodium differ to that of alendronic acid?
Is still to take 30 mins before breakfast
BUT also to leave 2hrs before and after food/ drink - if taken at any other time of day
Endocrine System
What is Strontium?
Bone formation stimulant and reduces bone resorption
Endocrine System
What are some side effects of Strontium?
- serious cardiovascular diseases (inc. MI, VTE)
- severe allergic reaction - DRESS: drug rash with eosinophilia and systemic symptoms
Sex Hormone Responsive Conditions
What are some natural oestrogens?
- estradiol
- estrone
- estriol
Sex Hormone Responsive Conditions
What are some examples of progesterones?
- norethisterone
- levonorgestrel
- desogestrel
Sex Hormone Responsive Conditions
What are some examples of synthetic oestrogens?
- ethinylestradiol
- mestranol
Sex Hormone Responsive Conditions
What are some examples of tibolones?
- estrogenic
- progestogenic
- weakly androgenic
Sex Hormone Responsive Conditions
What menopausal symptoms can estrogens alleviate?
- vaginal atrophy (vaginal dryness)
- vasomotor instability (hot flushes, night sweats)
- postmenopausal osteoporosis
Sex Hormone Responsive Conditions
What are the differences in HRT between women with a uterus and those without?
1) Without:
- continuous oestrogen use
- consider addition of progesterone IF endometriosis occurs
2) With:
- oestrogen with cyclical progestogen
Sex Hormone Responsive Conditions
What are the risks of HRT?
1) Breast cancer
2) Endometrial cancer
3) Ovarian cancer
4) VTE
5) Stroke
6) Coronary heart disease
Sex Hormone Responsive Conditions
What are some reasons to stop HRT?
- sudden severe chest pain/ breathlessness (PE)
- unexplained swelling/ severe pain in calf (DVT)
- severe stomach pain (hepatotoxicity)
- jaundice/ hepatitis (liver dysfunction)
- serious neurological defects
- very high BP
- prolonged immobility
Sex Hormone Responsive Conditions
What should be done for HRT for an elective surgery?
Stop 4-6 weeks before surgery
Re-initiate when FULLY mobile
Sex Hormone Responsive Conditions
What should be done for a patient taking HRT during a non-elective surgery?
Prophylactic heparin
Graduated compression stockings
Sex Hormone Responsive Conditions
What are some contraindications for HRT?
- prolonged immobility after surgery
- thrombophlebitis
- angina/ MI
- VTE
- thrombophillic disorder (tendency to form blood clots)
- liver disease
- untreated endometrial hyperplasia
- oestrogen dependent cancer
- history of breast cancer
Sex Hormone Responsive Conditions
Name an anti-oestrogen.
Clomifene
Sex Hormone Responsive Conditions
What is the main side effect of clomifene?
Multiple pregnancies
Thyroid Disorders
What do thyroid hormones regulate?
- metabolic rate
- heart rate
- digestive function
- muscle control
- brain development
Thyroid Disorders
What are the signs and symptoms of hypERthyroidism?
INCREASED METABOLISM AND ACTIVITY
- hyperactivity/ excitability
- tachycardia/ arrhythmias
- insomnia
- heat intolerance
- increased appetite
- weight loss
- diarrhoea
- goitre
- tremors
- angina pain
Thyroid Disorders
What is the treatment for hypERthyroidism?
Carbimazole
OR
Propylthiouracil
Thyroid Disorders
What are some MHRA warnings for carbimazole?
- acute pancreatitis
- congenital malformations
- bone marrow suppression (neutropenia & agranulocytosis)
Thyroid Disorders
What drug can be given in hypERthyroidism for symptomatic relief?
Propranolol
Thyroid Disorders
What is the treatment for Graves’ disease?
Radioactive iodine
Can consider carbimazole if remission is likely
Thyroid Disorders
What is the treatment for hypERthyroidism in pregnancy?
1st trimester: Propylthiouracil
2nd & 3rd trimesters: Carbimazole
Thyroid Disorders
What are the signs and symptoms of thyrotoxicosis?
- HR >140 (tachycardia)
- heat intolerance
- diarrhoea/ N&V
- seizures/ delirium/ confusion/ psychosis
Thyroid Disorders
What are the signs and symptoms of hypOthyroidism?
DECREASED METABOLISM AND ACTIVITY
- fatigue
- weight gain
- constipation
- depression
- dry skin
- intolerance to cold
- menstrual irregularities
Thyroid Disorders
What is the treatment for hypOthyroidism?
Levothyroxine
Thyroid Disorders
What monitoring is required for levothyroxine?
TSH - every 3 months until stable, then yearly
Thyroid Disorders
When should levothyroxine be taken?
At least 30 minutes before food/ caffeinated drinks
Thyroid Disorders
What is an MHRA warning for levothyroxine?
Small proportion of patients can feel symptoms if alternating between brands
Thyroid Disorders
When should levothyroxine doses be questioned?
When higher than 200micrograms
Thyroid Disorders
How does the dosing of liothyronine compare to levothyroxine?
2-25micrograms = 100micrograms of levothyroxine
Corticosteroid Responsive Conditions
Which patients on corticosteroid treatment receive a PIL?
Those on systemic corticosteroids
Corticosteroid Responsive Conditions
What counselling should patients on corticosteroids receive?
- risk of infections
- adrenal suppression
- psychiatric reactions
- withdrawal of corticosteroids
Corticosteroid Responsive Conditions
What are the types of corticosteroid?
1: mineralocorticoid
2: glucocorticoid
Corticosteroid Responsive Conditions
Which type of corticosteroid causes high fluid retention?
Mineralocorticoids
Corticosteroid Responsive Conditions
Which type of corticosteroid causes a high anti-inflammatory effect?
Glucocorticoids
Corticosteroid Responsive Conditions
Which drug has the highest mineralocorticoid steroid activity?
Fludrocortisone
Corticosteroid Responsive Conditions
Which type of corticosteroid is hydrocortisone?
Mineralocorticoid
Corticosteroid Responsive Conditions
What is fludrocortisone used to treat?
Postural hypotension
Corticosteroid Responsive Conditions
When are glucocorticoids preferred?
When fluid retention is a disadvantage, e.g. heart failure
Corticosteroid Responsive Conditions
Which drugs have the highest glucocorticoid activity?
- dexamethasone
- betamethasone
Corticosteroid Responsive Conditions
What are some side effects of mineralocorticoids?
- HTN - due to sodium + water retention
- hypOkalaemia - due to potassium loss
- hypOcalcaemia - due to calcium loss
Corticosteroid Responsive Conditions
What are some side effects of glucocorticoids?
- hyperglycaemia - can lead to diabetes
- osteoporosis
- avascular necrosis of the femoral head and muscle wasting
- gastric ulceration and perforation, irritation and dyspepsia
Corticosteroid Responsive Conditions
(1) Which type of corticosteroid requires addition of a PPI during treatment? (2) Why?
(1) Glucocorticoid
(2) Can cause gastric ulceration and perforation
Corticosteroid Responsive Conditions
What is required in glucocorticoid treatment lasting longer than three months?
Prophylaxis of osteoporosis with bisphosphonates
Corticosteroid Responsive Conditions
What are the MHRA warnings for corticosteroids?
- central serous chorioretinopathy (degradation of retina)
- psychiatric reactions
- adrenal suppression
- infections (due to immunosuppression)
- insomnia
- skin thinning
- Cushing’s syndrome (in prolonged usage)
Corticosteroid Responsive Conditions
What are some symptoms of adrenal suppression?
- fatigue
- anorexia
- nausea + vomiting
- hypOnatraemia
- hypOglycaemia
- hypOtension
- hypErkalaemia
Corticosteroid Responsive Conditions
(1) What effect can anaesthesia have on a patient taking corticosteroids? (2) How is this managed?
(1) Dangerous fall in BP
(2) Supply adrenal replacement with IV hydrocortisone
Corticosteroid Responsive Conditions
Why do corticosteroids cause increased risk of infections?
They cause immunosuppression
Corticosteroid Responsive Conditions
Why should corticosteroids be given in the morning?
That is when cortisol is produced
It reduce risk of insomnia
Corticosteroid Responsive Conditions
How can risk of side effects of corticosteroids be minimised?
- lowest effective dose for minimum period
- given as a single dose in the morning
- total dose for 2 days can be taken as a single dose on alternate days
- intermittent therapy with short courses
- local treatment, rather than systemic
Corticosteroid Responsive Conditions
When is gradual withdrawal necessary for corticosteroids?
- > 3 weeks of treatment
- > 40mg daily (or equivalent) for >1 week
- recently received repeated courses
- repeat evening doses
- taken a short course within 1 year of stopping long-term therapy
- other possible causes of adrenal suppression
Corticosteroid Responsive Conditions
What effect can corticosteroids have with prolonged/ repeated use in pregnancy?
Risk of intra-uterine growth restriction
Corticosteroid Responsive Conditions
What should be monitored in corticosteroid treatment of pregnant women?
Monitor fluid retention
Corticosteroid Responsive Conditions
Describe the potency of topical hydrocortisone.
Mild
Corticosteroid Responsive Conditions
Describe the potency of topical clobetasone.
Moderate
Corticosteroid Responsive Conditions
Describe the potency of topical betamethasone 0.025%.
Moderate
Corticosteroid Responsive Conditions
Describe the potency of topical betamethasone 0.1%.
Potent
Corticosteroid Responsive Conditions
Describe the potency of topical mometasone.
Potent
Corticosteroid Responsive Conditions
Describe the potency of topical clobetasol.
Very potent
Corticosteroid Responsive Conditions
Why should topical corticosteroids be applied thinly?
To prevent skin thinning
Corticosteroid Responsive Conditions
Why should topical corticosteroids not be applied to broken skin?
Increased risk of infection
Corticosteroid Responsive Conditions
What are the potential causes of adrenal insufficiency?
- Addison’s disease
- congenital adrenal hyperplasia
Corticosteroid Responsive Conditions
What is the treatment for adrenal insufficiency?
Hydrocortisone
Can be treated with fludrocortisone as well
Corticosteroid Responsive Conditions
What can adrenal insufficiency lead to?
Adrenal crisis
Corticosteroid Responsive Conditions
What are some symptoms of adrenal crisis?
- severe dehydration
- hypovolaemic shock
- altered consciousness
- seizures
- stroke
- cardiac arrest
- death (if left untreated)
Corticosteroid Responsive Conditions
What is the treatment of adrenal crisis?
Medical EMERGENCY- treat rapidly with hydrocortisone
Corticosteroid Responsive Conditions
What is the treatment for low cortisol and low aldosterone?
Hydrocortisone and fludrocortisone
Corticosteroid Responsive Conditions
What is the treatment for hypopituitarism?
Replacement hydrocortisone
Corticosteroid Responsive Conditions
What is Cushing’s syndrome characterised by?
Hypercortisolism
Corticosteroid Responsive Conditions
What are some symptoms of Cushing’s syndrome?
- skin thinning
- easy bruising
- reddish-purple stretch marks
- striae
- fat deposits in the face
- moon face
- acne
- amenorrhoea (absence of periods)
- hirsutism (excessive growth of dark/ coarse hair)
Corticosteroid Responsive Conditions
(1) What are some causes of Cushing’s syndrome? (2) How can they be resolved?
- corticosteroids: reduce dose/ withdraw
- tumour: surgery/ cortisol-inhibiting drugs
Corticosteroid Responsive Conditions
What is the treatment for Cushing’s syndrome?
Ketoconazole
Corticosteroid Responsive Conditions
What is the required patient counselling for treatment of Cushing’s syndrome with ketoconazole?
- report signs of liver toxicity
- anorexia
- abdo pain
- dark urine
- jaundice
- itching
- pale stools
- N+V
Corticosteroid Responsive Conditions
What effects can adrenal suppression have on electrolytes?
- hypOnatraemia
- hypOglycaemia
- hypERkalaemia
Corticosteroid Responsive Conditions
What is the dosing of prednisolone for an asthma exacerbation?
40mg for at least 5 days
Corticosteroid Responsive Conditions
What is the dosing of prednisolone for treatment of COPD exacerbation?
30mg for 7-14 days
Diabetes in Pregnancy and Breastfeeding
Describe the insulin requirements for diabetes in pregnancy?
Insulin requirements increase in 2nd and 3rd trimester
Diabetes in Pregnancy and Breastfeeding
(1) Why should folic acid be taken during pregnancy? (2) At what dose?
(1) Reduce risk of neural tube defects
(2) 5mg OD
Diabetes in Pregnancy and Breastfeeding
Which oral antidiabetics should be stopped for treatment of diabetes during pregnancy?
All except metformin should be stopped and changed to insulin
Diabetes in Pregnancy and Breastfeeding
Which oral antidiabetics should be avoided during breastfeeding?
All except metformin
Diabetes in Pregnancy and Breastfeeding
Which type of insulin is first choice for a long-acting insulin during pregnancy?
Insulin isophane
Diabetes in Pregnancy and Breastfeeding
(1) Which patients are at increased risk of hypOglycaemia during the postnatal period? (2) How should this risk be reduced?
(1) Women with pre-existing diabetes
(2) Reduce their insulin immediately after birth
Diabetes in Pregnancy and Breastfeeding
(1) What should women taking insulin during pregnancy always carry with them? (2) Why? (3) How does this differ if the patient is a type 1 diabetic?
(1) Dextrose tablets/ glucose-containing drink
(2) HypOglycaemia risk
(3) Carry a glucagon injection
Diabetes in Pregnancy and Breastfeeding
What should be done if a pregnant diabetic patient is taking statins?
Discontinue during pregnancy
Diabetes in Pregnancy and Breastfeeding
What should be done if a pregnant diabetic patient is taking ACEis/ ARBs?
Discontinue
Replace with alternative antihypertensives suitable for use in pregnancy
Diabetes in Pregnancy and Breastfeeding
When should treatment for gestational diabetes be stopped?
Immediately after birth
Diabetes in Pregnancy and Breastfeeding
What is the management for a patient with gestational diabetes with blood glucose of <7mmol/L?
Diet and exercise
- metformin if requirement not met within 2 weeks
- insulin if metformin contraindicated or not effective
Diabetes in Pregnancy and Breastfeeding
What is the management for a patient with gestational diabetes with blood glucose of >7mmol/L?
Diet and exercise
AND
insulin immediately +/- metformin
Diabetes in Pregnancy and Breastfeeding
What is the management for a patient with gestational diabetes with blood glucose of 6-6.9mmol/L with complications?
Insulin immediately +/- metformin
Diabetes & Driving
Which diabetic patients should notify the DVLA?
Those on insulin
Diabetes & Driving
What are the hypo requirements to be a Group 1 driver?
No more than 1 episode of severe hypoglycaemia while awake in the previous 12 months
Diabetes & Driving
What are the hypo requirements to be a Group 2 driver?
Must report ALL episodes of severe hypoglycaemia (including sleep)
No episodes of severe hypoglycaemia in the preceding 12 months
Diabetes & Driving
What is the advice from the DVLA for diabetic drivers?
- drivers on insulin should always carry a glucose meter and blood glucose test strips
- check CBGs every 2 hours
- CBGs should always be above 5 while driving
- if CBGs <5, have a snack
- if CBGs <4, stop driving
Diabetes & Driving
What CBG range is considered as hypoglycaemic when driving?
<4mmol/L
Diabetes
How frequently should HbA1c be monitored in diabetes?
Every 3-6 months
Diabetes
What are some of the typical features of type 1 diabetes?
- hyperglycaemia
- ketosis
- rapid weight loss
- BMI <25
- age <50
- FHx of autoimmune disease
Diabetes & Driving
How often should CBGs be monitored in type 1 diabetic patients?
Four times a day
(Before each meal and before bed)
Diabetes & Driving
For type 1 diabetes, what is the blood glucose target on waking?
5-7mmol/L
Diabetes & Driving
For type 1 diabetes, what is the blood glucose target when fasted during the day?
4-7mmol/L
Diabetes & Driving
For type 1 diabetes, what is the blood glucose target 90mins after eating?
5-9mmol/L
Diabetes & Driving
For type 1 diabetes, what is the blood glucose target while driving?
> 5mmol/L
Diabetes
What regimen should all insulin patients be on?
1) Basal bonus - (long-acting AND multiple doses of short-acting)
2) Mixed biphasic regimen - (short-acting mixed with intermediate-acting)
3) Insulin pump - (initiated by specialist team only)
Diabetes
What is the first line generic basal insulin?
Insulin detemir BD
Diabetes
What is the second line generic basal insulin?
Insulin glargine OD
Diabetes
What is an alternative generic basal insulin if first and second line are not suitable?
Insulin degludec OD
Diabetes
What are some factors that increase insulin requirements?
- infection
- stress
- trauma
Diabetes
What are some factors that decrease insulin requirements?
- physical activity
- reduced food intake
- impaired renal/ hepatic function
- certain endocrine disorders (thyroid, coeliac, Addison’s)
Diabetes
Which injection site for insulin has the fastest absorption rate?
Abdomen
Diabetes
Why must injection site of insulins be rotated?
Lipohypertrophy can occur
Leads to erratic absorption of insulin
Diabetes
What is some important safety information for insulins?
- risk of severe harm and death due to withdrawing insulin from pen devices
- overdose of insulin due to abbreviations or incorrect device
- risk of cutaneous amyloidosis at injection site
Diabetes
Name the rapid-acting insulins (generic).
- lispro
- aspartame
- glulisine
Diabetes
Name the intermediate-acting insulins (generic).
- bisphasic isophane
- biphasic aspart/ lispro
Diabetes
Name the long-acting insulins (generic).
- detemir
- degludec
- glargine
Diabetes
Which long-acting insulin requires a BD regime?
Detemir
Diabetes
Which antidiabetics cause weight LOSS?
- GLP-1 analogues
- SGLT2i
Diabetes
Which antidiabetics cause weight gain?
- sulfonylureas
- pioglitazone
- insulin
Diabetes
Which antidiabetics have no effect on weight?
- DPP4i
- metformin
Diabetes
What is the first line diabetes treatment in patients with low CVD risk?
Metformin
Diabetes
What is the second line diabetes treatment in patients with low CVD risk?
DPP4i, pioglitazone, sulfonylurea or SGLT2i
Diabetes
What is the third line diabetes treatment in patients with low CVD risk?
Triple therapy
Diabetes
What is the first line diabetes treatment in patients with high CVD risk?
Metformin
Consider addition of SGLTi as soon as diabetes is controlled
Diabetes
What is the second line diabetes treatment in patients with high CVD risk?
DPP4i, pioglitazone, sulfonylurea or SGLT2i
Antidiabetics
Name a biguanide.
Metformin
Antidiabetics
Describe the MoA of biguanides.
Decrease gluconeogenesis
Increase peripheral utilisation of glucose
Antidiabetics
What are some side effects of metformin?
- lactic acidosis
- GI side effects
- can reduce vitamin b12
Antidiabetics
What are some side effects of sulfonylureas?
- high risk of hypoglycaemia
- weight gain
Antidiabetics
Can sulfonylureas be used in hepatic or renal failure?
No. Avoid.
Antidiabetics
Describe the MoA of pioglitazone.
Reduces peripheral resistance to insulin
Antidiabetics
What are some cautions for pioglitazone?
- increased risk of bladder cancer
- avoid in Hx of HF
- increased risk of bone fractures
- increased risk of liver toxicity
Antidiabetics
Name a side effect of DPP4i.
Pancreatitis
Antidiabetics
What are the MHRA warnings for SGLT2is?
- life-threatening and fatal cases of DKA
- Fournier’s gangrene
- lower limb amputation - canagliflozin ONLY
- increased risk of UTIs
Antidiabetics
What are some MHRA warnings for GLP1 analogues?
- risk of DKA when given with insulin
- acute pancreatitis
- dehydration due to GI side effects
Antidiabetics
How often are eye tests required for diabetic patients, to monitor for retinopathy?
Yearly
Antidiabetics
(1) What antihypertensive can have an effect on glycaemic control from antidiabetic drugs/ insulin? (2) What is this effect?
(1) ACEi
(2) Potentiates hypoglycaemic effects
Diabetes
In which type of diabetes is DKA more common?
Type 1
Diabetes
Name some risk factors for DKA.
- discontinuation/ inadequate insulin therapy
- acute illness, e.g. MI/ pancreatitis
- new onset diabetes
- stress (trauma/ diabetes)
Diabetes
How is DKA diagnosed?
1) hyperglycaemia: >11mmol/L
2) plasma ketones >3mmol/L
3) acidosis
Diabetes
What are some symptoms of DKA?
- polyurea
- polydipsia
- weight loss
- nausea/ vomiting
- pear drop breath
- kussmaul respiration (deep/ fast breathing)
- excessive tiredness
- confusion
Diabetes
What is HHS?
Hyperosmolar hyperglycaemic state
Diabetes
How is HHS diagnosed?
Marked hyperglycaemia (>30mmol/L)
Hypovolaemia
Diabetes
What are symptoms of HHS?
- dehydration
- weakness
- weight loss
- tachycardia
- dry mucous membranes
- poor skin turgor
- hypotension
- acute cognitive impairment
- shock (in severe cases only)
Diabetes
What dose adjustments are required for insulin for elective surgery for minor procedures?
Day before: Reduce OD long-acting dose by 20%
Diabetes
What dose adjustments are required for insulin for elective surgery for major procedures?
Day before: Reduce OD long-acting dose by 20%
On day:
- reduce OD long-acting dose by 20%
- IV infusion of KCl, glucose, and NaCl
Diabetes
What are the insulin changes following surgery?
Convert back to SC when patient is eating/ drinking without vomiting
- Basal bonus regimen: restarted with first meal
- Long-acting regimen: continues at 20% dose reduction until patient leaves hospital
- BD regimen: restart at breakfast or evening meal
Diabetes
How should patients’ understanding of hypoglycaemia be tested?
Gold score or Clarke score
Diabetes
What blood glucose range is considered to be hypoglycaemic?
<4mmol/L
Diabetes
What are some symptoms of hypoglycaemia?
- sweating
- dizziness
- lethargy
- hunger
- tremor
- tingling lips
- palpitations
- extreme moods
- pale
Diabetes
(1) What effect can beta blockers have on glycaemic control observation? (2) How?
(1) Can mask signs of hypoglycaemia
(2) Preventing warning signs such as tremors
Diabetes
(1) Which snacks should be avoided for correction of hypoglycaemia? (2) Why?
(1) Chocolate and biscuits
(2) Likely to have low sugar content and high fat content - can delay gastric emptying