Do you use your blood glucose level meter like a compass, giving you some direction with your diabetes self care plan?
So, is missing an occasional blood glucose level a problem?
At a meeting of diabetes health care professional specialists a few years ago I met an endocrinologist specialising in the diabetes management of young people living with diabetes. This specialist stated that she didn’t really mind if her patients measured their blood glucose level between visits…… except for the 2 weeks immediately prior to the visit. For these measurements were the current ones – that bgls that she would base any treatment changes on.
Testing
Among other things, a measured pattern of your blood glucose levels will help you to:
Develop confidence in your diabetes self care plan
Develop a improved understand of the relationship between your blood glucose levels the factors that effect them: e.g. physical activity, food you eat, stress and illness.
Explore if your diabetes medication, if used, is safe and effective in helping you reach your blood glucose level targets.
Assess in critical situations if your blood glucose levels are in the extremes and require immediate management
Frequency
For any individual with diabetes, personalised education by qualified and experienced health care professionals in appropriate blood glucose targets and timing of SMBG, interpretation of documented SMBG serial profiles and trends across and between days, is essential.
Suggested patterns of testing could be :
1) You may test before and 2 hours after meals on 3-4 consecutive days to establish your current pattern. If you identify that your blood glucose levels are off target, more testing maybe required in order to make appropriate adjustments to your diabetes self care plan.
2) For people with type 2 diabetes – You test once per day moving the test each day forwards by one appropriate time e.g Monday before breakfast, Tuedsay after breakfast, Wednesday after lunch, Thurdsay after dinner, Friday before breakfast and so on. After a few weeks you can then assess the pattern.
3) Before and after a new meal: this will give you some idea of how your body is adjusting to this new meal. You may have changed the type of food you eat, or the volume of the carbohydrate in your meal based on advice from your dietitian.
4) Before, after, during exercise: assessing your risk of hypoglycaemia and your bodies reaction to the exercise.
If your bgls are on target you may the test less frequently, or/and only when you are thinking you may be hypoglycaemia or sick.
*For people with type 1 diabetes, avoiding DKA is essential when sick – in this situation follow your sick day plan.*
What’s Recommended?
Blood glucose targets: from HERE – Australasian Paediatric Endorcine Group, 2011
For adults in the intensively treated group of the DCCT, blood glucose targets were:
- Before meals 3.9 to 6.7 mmol/L
- After meals 5 to 10 mmol/L
- At 3am (weekly) above 3.6 mmol/L
For young people with type 1 diabetes, targets are (Ambler and Cameron 2010):
- Before meals 4 to 7 mmol/L
- After meals 5 to 10 mmol/L
- At bed time 6 to 10 mmol/L
- At 3am 5 to 8mmol/L
Blood glucose targets may be set higher for infants and young children:
- Before meals 5 to 10 mmol/L
- After meals 6 to 10 mmol/L
- At bed time 6 to 12 mmol/L
“A 2012 Cochrane review75 on the effect of SMBG in patients with type 2 diabetes not using insulin found limited clinical benefit as measured by HbA1c from SMBG and no evidence that SMBG affects patient satisfaction, general wellbeing or general health-related quality of life.
Self-monitoring is usually recommended:
- for patients on insulin and oral hypoglycaemic agents (OHAs) that can cause hypoglycaemia
- when monitoring hyperglycaemia arising from illness
- with pregnancy, as well as pre-pregnancy planning
- when changes in treatment, lifestyle or other conditions requires data on glycaemic patterns
- when HbA1c estimations are unreliable (e.g. haemoglobinopathies).
The method and frequency of monitoring need to reflect individual circumstances and therapeutic aims and where the person with diabetes and their healthcare providers have the knowledge, skills and willingness to incorporate self monitoring of blood glucose levels and therapy adjustments into diabetes care plans.
In practice
Recommendations | Reference | Grade* |
---|---|---|
Blood glucose control should be optimised because of its beneficial effects on the development and progression of microvascular complications | (71) NHMRC, 2009 |
A |
The potential harmful effects of optimising blood glucose control in people with type 2 diabetes should be considered when setting individual glycaemic targets | (71) NHMRC, 2009 |
A |
The general HbA1c target in people with type 2 diabetes is ≤7% (≤53 mmol/mol). Adjustments to diabetes treatment should be considered when HbA1c is above this level | (71) NHMRC, 2009 |
A |
Targets for SMBG levels are 6–8 mmol/L fasting and pre-prandial, and 6–10 mmol/L 2 h postprandial | (71) NHMRC, 2009 |
C |
” from HERE – RACGP General Practice management of type 2 diabetes 2014-15
Goals
What are your goals? For most people goals are very ‘soft’ e.g “I want normal blood glucose level’s”
Something more specific may be “I want to avoid hypoglycaemia” or “I don’t want any blood glucose levels over 15 mmols”
You may want to consider how to write effective goals that are specific and time limited. For example:
“In the next 3 months, (between now and my next HbA1c test) I shall measure my blood glucose level every week for 3 days when I wake up, and also before and after each meal. If my bgls are over target I shall test daily for a week and show the results to my GP”
Missing an occasional test is not going to change this goal. The more information you can provide to yourself the more likely it is that your diabetes self care plan will be safe and effective.
Kind Regards,
David
Diabetes Educator @ Diabetes Counselling Online