The universal GP Training website for everyone, not just Bradford.   Created in 2002 by Dr Ramesh Mehay

Diabetes

Bradford VTS Clinical Resources

WEBLINKS

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Diabetes at a Glance

SYMPTOMATIC

Symptoms of hyperglycaemia (polyuria /polydipsia, unexplained weight loss. visual blurring, genital thrush, lethargy) plus either:

HbA1c: 48mmol/mol or higher  (LAB TESTING) (Type 2 diabetes is diagnosed in adults who are not pregnant and do not have haemoglobinopathy or haemolytic anaemia by a glycated haemoglobin (HbA1c) level of 48 mmol/mol or above.

The WHO state that diagnosis should be confirmed with a repeat HbA1c test, unless clinical symptoms and plasma glucose levels >11.1mmol/l are present in which case further testing is not required.)

FBG: >7.0mmol/L or higher x2 

Dip urine to check for ketones

ASYMPTOMATIC

In the absence of symptoms – 2 abnormal results on separate days are required for the diagnosis.

Results:

  • HbA1c > 48 mmol/l  →    repeat HbA1c test after 2 weeks  HbA1c >48 mmol/l;    code Diabetes and set recall
  • HbA1c 42-47 mmol/l →  code and set “at risk of diabetes” recall

May not be accurate in the following cases:

  • ALL symptomatic children and young people
  • Symptoms suggesting Type 1 diabetes/pancreatic insufficiency (any age)
  • Short duration diabetes symptoms
  • Patient at high risk of diabetes who are acutely ill
  • Taking medication that may cause a rapid glucose rise e.g steroids, antipsychotics
  • Acute pancreatic damage/pancreatic surgery

Patients with haemoglobinopathy – the labs test for this and will detect abnormalities.

A diagnosis of diabetes has important legal and medical implications for the patient and it is therefore essential to be secure in the diagnosis.

A diagnosis should never be made on the basis of glycosuria.

A stick reading of finger prick should be confirmed by a venous sample, as per NICE guidelines.

Admission

Admit to hospital if the person is at risk of a hyperglycaemic emergency (vomiting, abdominal pain reduced conscious level, heavy ketonuria, dehydration requiring IV fluids, hypotension, and serious intercurrent problem).

Same day referral

Refer to be seen on the same day if the patient is acutely ill, consider Type 1 Diabetes/pancreatic insufficiency if ketonuria present, the patient is slim and has a short history of marked symptoms (weight loss, thirst, and polyuria).

Early Referral

Diabetes and pregnancy requires referral to the hospital diabetes team

LIFESTYLE

BMI                        
Aim for healthy BMI <25 – consider dietition, Orlistat, other dietary measures & EXERCISE

ALCOHOL            
Not to exceed recommended limits. (14 units men and women)

SMOKING          
Stop!

BLOOD PRESSURE

Active management is essential!

Over half of all diabetics are hypertensive. Trials have shown that excellent BP control reduces retinopathy, nephropathy, strokes, heart failure and MI. BP control is as important as glycaemic control! TARGET < 130/80

Treatment

  • 1st line – ACEi, ARB if they cannot tolerate it.
    Ramipril starting regime derived from the  HOPE study regime and BNF guidelines
    If U&Es pre treatment reveal a creatinine < 150 micromol/l and a sodium >130 mmol/l then 2.5 mg Ramipril daily (1.25mg if on lower dose concomitant diuretics) for one week with check U&Es and an increase to 5.0 mg Ramipril for a further two weeks. Re-check U&Es and if indicated increase to 10mg Ramipril and repeat U&Es at least on an annual basis. If eGFR falls > 25% or creatinine rises by > 30% stop or back titrate treatment – see NICE guidelines. Don’t forget BNF cautions and contraindications.
  • 2nd line – CCB or, thiazide like diuretic or, Beta blocker (especially if there is a history of ischaemic heart disease),. Follow hypertension protocol

LIPIDS AND CVD RISK (see lipid modification protocol)

Offer generic Atorvastatin 40mg (Bradford Healthy Hearts) if their Q risk >10% (aged between 18-84 yrs), have been diabetic for > 10 years or, over 40 years old.  Target chol <4mmol/l

For diabetics with established CVD offer secondary prevention or Chol > 4mmol/l – Atorvastatin 80mg

Triglycerides:

If TG level remains high (above 4.5mmol/l) please ref to CKS guidance on lipid modification or in-house lipid modification protocol.

Do not routinely offer Nicotinic acid or Omega fish oils.

MICROALBUMINURIA  AND CKD

  • All diabetics need testing annually for microalbuminuria and eGFR – microalbuminuria is the first sign of diabetic kidney disease and occurs before eGFR falls.
  • SEE CKD PROTOCOL

ANTIPLATELETS

  • Do not offer anti-platelets unless there is evidence of CVD

NICE recommended Hba1c targets are:

  • 48mmol/mol – people who are managed by lifestyle and diet
  • 48mmol/mol – people who are managed by lifestyle and diet combined with a single drug not associated with hypoglycaemia (such as metformin)
  • 53mmol/mol – people who are taking a drug associated with hypoglycaemia (such as sulphonylurea), combination treatment

See table below for suggested targets for frail/elderly patients.  Please exempt from QoF if you follow these targets putting an explanation in the notes.

Hba1c Target: aim for 48mmol/mol (if on diet or single drug not affected by hypoglycaemia ) or <53mmol/mol (if on SU, or more than one medication).  Caution: elderly

  • Start Oral treatment usually Metformin at diagnosis. Metformin 500mg ideally with evening meal, increasing to 1 gram a week later if they have no side effects.
  • Please remember Metformin is very effective, reduces cardiovascular risk, retards weight gain and is not usually associated with hypos – but is contra-indicated if Creatinine > 150 (or eGFR < 40) in CCF or significant hepatic dysfunction.
      • Metformin has to be stopped if eGFR fall below 30!
      • Metformin MR can be used if they run into problems with GI side effects.
  • Don’t forget that on starting hypoglycaemics to complete the prescription exemption form for those patients under 60 years of age.
  • If you are starting a sulphonylurea (ideally Glimepiride) – ensure they are counselled and documented about:
      • symptoms of hypos
      • hypo management
      • hypos and driving and remind them about informing their car and travel insurer AND document this in their records. If they hold HGV or PSV license then check with the 6 monthly updated DVLA guidance with respect to them having to inform the DVLA.
      • Ensure they have been given a glucometer and a sharps bin, test strips and lancets are added to their repeat prescription
    •  
  • DISCUSS AKI SICK DAY RULES ADVICE – see hypertension protocol for full advice.

FUNCTIONALLY DEPENDENT

  • Due to loss of function, having impairments of ADLs
  • Increased likelihood of requiring addition medical &/or social care
  • HBA1c target: 53 – 64mmol/mol

FRAIL

– Combination of significant fatigue, recent weight loss,       severe restriction in mobility & strength, increased propensity for falls & increased risk of institutionalisation

 – A recognised condition & accounts for 25% of older people with diabetes

 – Clinical Frailty scale or CHSA 9-point scale (assessment tool)

HBA1c target: 60-70mmol/mol

DEMENTIA

– Degree of cognitive impairment leading to sig. Memory problems, a degree of disorientation, or a change in personality & unable to self care

 – MiniCog tool (easy to use assessment tool)

HbA1c target: 60-70mmol/mol

END OF LIFE CARE

  • Significant illness or malignancy & have life expectancy reduced to <1 year
  • Glycaemic aim – hypo and symptomatic hyperglycaemia avoidance

Medication

Mode of action

Side effects

Cautions (check BNF for more detail)

Dose

METFORMIN

1st line treatment, unless BMI <25 (23 in South Asian population)

Low Hypo risk

Reduces CVD risk, weight neutral

Helps to stop the liver producing new glucose.

It helps to overcome insulin resistance by making insulin carry glucose into muscle cells more effectively.

 

Main side effect if GI affects, generally dose dependent-can be reduced with gradual increase in dose over several weeks or trying modified release Metformin

Also: metallic taste, reduced absorption of vitamin B12, build up of lactic acid in the blood, allergic reaction and liver problems.

STOP/DO NOT USE IF eGFR <30 ml/min

*Lactic acidosis- care if eGFR < 45ml/min.

Document that advice has been given to stop these tablets if they become dehydrated (restart when eating normally again)

*GI side effects. Titrate dose slowly to reduce side effects

NOTE IF ALT> 3 TIMES NORMAL

Start at 500mg ideally with evening meal, increasing to 1g with evening meal after a week if they have no side effects.

Max dose 2 gram  over 4 weeks.

Consider slow release for to reduce tablet load or if they are struggling with GI side effects.

 

SGLT-inhibitor

Empagliflozin

Low hypo risk

Can help with weight loss

Sodium-glucose co-transporter 2 (SGLT2) inhibitor that prevents glucose reuptake in the kidney, leading to the excretion of excess glucose in the urine.

Polyuria, polydipsia, thrush. UTI, fluid depletion

Increased risk of amputation- avoid if h/o leg ulcers

Only start if Cr Clearance > 60.

Care if > 75 years. Risk of postural hypotension.

Care needed if they have skin ulcers – risk of amputation.

Document advice about normoglycaemic ketoacidosis and give ketostix.

Empagliflozin 10mg. Can be increased to 25mg.

Expensive so only continue if there is a clear response after 6 months

SULPHONYLUREA (SU)

Glimepiride

Risk of hypos

Good if rapid response is needed.

They work by stimulating cells in the pancreas to make more insulin.

They also help insulin to work more effectively in the body.

 

Weight gain.

Hypoglycaemia, gastrointestinal side effects, low sodium, facial flushing and intolerance of alcohol, allergies etc.

 

Can cause hypoglycaemia, particularly if there is renal impairment or they are elderly.

Consider occupation – hypos if not eating regularly, fasting.

Make sure you give and document advice about hypos.

Make sure they are able to test their blood glucose – issue glucometer, test strips, lancets and sharps bin. (SGBM)

Document advice about driving/insurance.

Start at 1mg and titrate up to 4mg depending on glucose level.  Should have an effect on Hba1c over a 2 month period.

GLIPTIN

Do not cause weight gain and encourages patient satiety. Although they probably reduce Hba1c levels less than other drug treatments.

Low hypo risk

They work by blocking the action of the enzyme, DPP-4, which destroys the hormone Incretin.

 

Gastro-intestinal effects, oedema, headache,

 Avoid if h/o Pancreatitis or heart failure or liver problems.

*Expensive- only continue if they meet NICE guidance.

*Not v powerful max likely reduction ~ 11 mmol/mol

*Do not use if a h/o pancreatitis

*Monitor egfr at reviews

*Don’t use if heart failure risk

Linagliptin 5mg if eGFR < 50

GLITAZONE

Pioglitazone

Low hypo risk

Consider in people with very significant features of metabolic syndrome.

South Asian

Reducing insulin resistance.

Improving insulin sensitivity.

 

Oedema esp if heart failure or at risk.

Rare reports of liver dysfunction.

Weight gain,

gastro-intestinal side effects, headache, dizziness.

 

Discuss with member of Level 2 team before starting.

Avoid if they have heart failure or risk of fluid overload

Avoid if h/o bladder cancer, undiagnosed haematuria

Avoid if fracture risk

Monitor LFTs at each diabetic review.

Annual urine dip looking for haematuria

Pioglitazone:15mg-30mg.

A six month period may be needed to really see an effect from these tablets. NICE recommends that they are only continued if at least a 11 mmol/l reduction in Hba1c is seen within 6 months of starting the treatment.

 

GLP-1 mimetic/insulin

Discuss with Level 2 doctor

  

 

  • At first warning of episode of hypoglycaemia:
      • Immediately treat with a 15-20g of a short-acting carbohydrate such as:
          • 200 mls of Lucozade (please note Lucozade formula has changed so lower in sugar- need 200ml)
          • 200mls of non-diet drink
          • 4-5 glucose tablets
          • 3-4 jelly babies
          • 200mls of fruit juice
  • If the hypo is more severe, and the patient cannot treat themselves:
      • applying Glucagel (or treacle, jam or honey) on the inside of cheeks and gently massaging the outside of cheeks.
      • if unconscious, Glucagon can be injected if the person treating has been trained to use it.
      • Otherwise call an ambulance immediately
  • Important:
      • If unable to swallow or unconscious, do not give anything by mouth (including Glucagel, treacle, jam or honey). Make sure family and friends are aware of this. If unconscious, place patient in the recovery position (on side with head tilted back) so that tongue does not block throat.
  • Follow-on treatment:
      • To prevent blood glucose levels dropping again, follow sugary foods with 10-20g of a longer-acting carbohydrate such as:
          • half a sandwich
          • fruit
          • a small bowl of cereal
          • biscuits and milk
          • the next meal if due
      • Patients experiencing regular episodes of hypoglycaemia require prompt review by the diabetes team.
      • Severe episodes of hypoglycaemia require urgent review by the diabetes team.

Advise patients the following: if you do go down with a cold, flu or any other illness…

  • The Basics
      • Rest.
      • Drink plenty of sugar-free fluids.
      • Avoid too much caffeine as this could make you dehydrated.
      • Take painkillers in the recommended doses as necessary.
      • Contact your GP to see if treatment with antibiotics is necessary.
      • If you are vomiting uncontrollably, contact your GP or diabetes clinic.
  • Insulin or diabetes medications
      • Keep taking your insulin or diabetes medications even if you are not eating. Stop metformin and blood pressure medication if you are dehydrated.  CONSIDER AKI SICK DAY RULES – see hypertension protocol.
  • Testing
      • Test your blood or urine four or more times a day and night (ie at least eight times in a 24-hour period) and write the results down. If you are not well enough to do this, ask someone to do it for you.
  • Ketoacidosis
      • When diabetes is out of control as a result of severe sickness, it can lead to a condition called diabetic ketoacidosis or diabetic coma if you have Type 1 diabetes. The body produces high levels of ketone bodies causing too much acidity in the blood.
  • Testing for ketones
      • If you have Type 1 diabetes and your blood glucose level is 15 mmol/l or more or you have two per cent or more glucose in your urine, you will also need to test your urine or blood for ketones. They are a sign that your diabetes is seriously out of control. Ketones are especially likely when you are vomiting and can very quickly make you feel even worse. If a ketone test is positive, contact your GP or diabetes care team immediately.
  • Food and drink
      • It is important to keep taking your medication as normal and drink plenty of sugar-free drinks. Aim to drink at least three litres (five pints) a day. Try to keep to your normal meal pattern, but if you are unable to, for any reason, you can replace some or all of your meals with snacks and/or drinks that contain carbohydrate such as yoghurt, milk and other milky drinks, fruit juice or sugary drinks such as Lucozade, ordinary cola or lemonade. You may find it useful to let fizzy drinks go flat to help keep them down

Advise patients of the following:

  • Vaccinations and/or malaria tablets
  • Carry diabetes ID or a GP letter if carrying insulin and list of prescription drugs
  • Carry all medication and blood glucose testing equipment in hand luggage
  • Consider how to keep insulin cool if travelling for long periods
  • Travel insurance: – Allow 2 weeks to buy travel insurance. – Don‟t just buy on price, check the cover and read the small print – – Be honest and declare all medical conditions
  • Plan to take twice the quantity of medical supplies normally used
  • Consider adjusting medication if travelling across time zones
  • Consider adjustment to insulin if travelling to hot or cold climate
  • Carry a European Health Insurance Card (EHIC) if travelling within Europe

www.ehic.org.uk, / 0845 605 0707

Consider availability of insulin if travelling abroad for long periods.

Interpreting blood results on pathology template – Remember frailty

  • HbA1c <48 →select satisfactory→take no action – patient will be reviewed as per recall
  • HbA1c 48-53 →select abnormal →speak to nurse → send task to admin to book tel appt with nurse to discuss abnormal result and document a suggested plan to up-titrate medication based on the above guidance for nurse to discuss with patient – nurse will discuss with patient possible changes to medication and then task Dr back to make changes and issue script.  – if on single drug or diet only
  • HbA1c <53 → select satisfactory  →take no action – if on SU or combination drugs patient will attend at next review 6 months later
  • HbA1c >53 → select abnormal (take into account patients age and fraility) →speak to nurse → send task to admin to book tel appt with nurse to discuss abnormal result and document a suggested plan to up-titrate medication based on the above guidance for nurse to discuss with patient – nurse will discuss with patient possible changes to medication and then task Dr back to make changes and issue script. 

Any concerns – send message to Level 2 team

Using the SystmOne Template (CDM) for Diabetes.
See CDM review table

  • Bloods: U&Es, eGFR, HbA1c, ALT (if first year on statin) and lipid profile  – (Consider other tests if have other chronic diseases.)
  • Urine ACR.
  • BP
  • Lifestyle discussion: smoking status/cessation advice, exercise status, alcohol intake, diet.
  • BMI
  • Retinal review.
  • Foot check annually (in house) and record on the template. If moderate or high risk they need a referral to podiatry
  • Any complications?  erectile dysfunction, neuropathic pain, autonomic neuropathy.
  • Hypo unawareness, ? hypos requiring external intervention (see DVLA guidelines).
  • Review of blood monitoring – if they require monitoring.
  • Medication review: concordance/indications/side effects/if on insulin – injection sites.
      • Record medication review done, move date on till next review
      • Assign diagnosis to repeat template medication.
  • Add/move recall on.    NB: Diabetics well be reviewed at least 6 monthly.

TARGETS AT A GLANCE

  • BP: <130/80 – particularly if there are renal problems
  • Get to non smoking: don’t forget smoking cessation
  • Cholesterol: < 4.0mmol/l
  • HbA1c:
        • Diet alone  or single drug not affected by hypoglycaemia <48mmol/l
        • Medication <53mmol/l.  Patient tailored care needed especially if they are elderly or there are concerns about hypogylcaemia.
  • BMI: <25

Diabetes in pregnancy is associated with risks to the woman and the developing fetus.

Planning a pregnancy

Women planning a pregnancy should be referred to a diabetes pre-conception clinic.

Pre-pregnancy planning includes:

  • Diet and exercise, weight loss advised if body mass index > 27kg/m2
  • Retinal photography unless carried out in last 12months
  • Renal assessment (including microalbuminuria)
  • Folic acid 5mgs for 3 months preconception and continued for first trimester.
  • Establish rubella status, booster organised if required.
  • Blood pressure should be monitored
  • Smoking/alcohol cessation advice

Review of medications

  • Metformin may be used before and during pregnancy, as well as or instead of insulin.  The diabetes antenatal clinic will oversee their care whilst pregnant.
  • Isophane insulin is the first-choice long-acting insulin during pregnancy.
  • Discontinue oral hypoglycaemic agents (apart from metformin), ACE-inhibitors, Angiotensin Receptor Blockers and statins

Gestational diabetes

  • 6 weeks post-partum patients require a HbA1c to establish whether glucose tolerance has returned to normal.
  • All patients require advice on their elevated long term risk of diabetes.
  • All patients require advice on their risk of gestational diabetes in future pregnancies.
  • All patients require advice regarding diet, weight control and exercise

All patients require an ANNUAL HbA1c in view of their elevated risk of Type 2 diabetes. Please add an ‘AT RISK OF DIABETES’ recall to their notes.

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How IT ALL STARTED
WHAT WE'RE ABOUT
WHO ARE WE FOR?

Bradford VTS was created by Dr. Ramesh Mehay, a Programme Director for Bradford GP Training Scheme back in 2001. Over the years, it has seen many permutations.  At the time, there were very few resources for GP trainees and their trainers so Bradford decided to create one FOR EVERYONE. 

So, we see Bradford VTS as  the INDEPENDENT vocational training scheme website providing a wealth of free medical resources for GP trainees, their trainers and TPDs everywhere and anywhere.  We also welcome other health professionals – as we know the site is used by both those qualified and in training – such as Associate Physicians, ANPs, Medical & Nursing Students. 

Our fundamental belief is to openly and freely share knowledge to help learn and develop with each other.  Feel free to use the information – as long as it is not for a commercial purpose.   

We have a wealth of downloadable resources and we also welcome copyright-free educational material from all our users to help build our rich resource (send to bradfordvts@gmail.com).

Our sections on (medical) COMMUNICATION SKILLS and (medical) TEACHING & LEARNING are perhaps the best and most comprehensive on the world wide web (see white-on-black menu header section on the homepage).

4th February 2024 

WHAT's HAPPENING?

Here are some updates planned over the next 6 months

  1. Updating the SCA exam pages with cases and videos.
  2. Clinical Specialty areas all being updated with current guidance and easy to understand diagrams and flow charts.
  3. Videos being created for some of the pages for those of you who prefer to watch than read.
  4. We’ve got some bradfordvts helpers to contribute and develop their own pages or areas of interest.  If you would like to be a bradfordvts helper, email me rameshmehay@googlemail.com
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