Abstract
Post-prandial hyperglycaemia is predictive of cardiovascular disease risk. Therefore, the International Diabetes Federation (IDF) recommends that 2-hour post-meal glucose should not exceed 7.8mmol/L. There are limited data regarding the extent of post-prandial hyperglycaemia in those with well-controlled type 2 diabetes and how this relates to HbA1c values.
Twenty-nine volunteers with diet-controlled type 2 diabetes were recruited (mean HbA1c 50mmol/mol [6.7%], SD 6.5 [0.6]); mean age 62 years [SD 5.8]; mean BMI 31.9kg/m2 [SD 5.3]), and underwent a three-day period of continuous glucose monitoring (CGMS) at home.
Compared with volunteers with an HbA1c >48mmol/mol (6.5%), those with an HbA1c =48mmol/mol (6.5%) – mean HbA1c 54 (7.1%) vs 44.9mmol/mol (6.3%), p<0.0001 – had lower mean 24-hour glucose levels (8.4 vs 7.2mmol/L, p=0.02), reduced fasting glucose concentrations (8.0 vs 6.6mmol/L, p=0.01), and spent less time with glucose concentrations >8mmol/L (703.1 vs 338.5 min, p=0.01). HbA1c showed reasonable correlation with time spent with glucose >8mmol/L (r2=0.48, p<0.0001).
Even volunteers with reasonably well-controlled, diet-managed type 2 diabetes spent a large proportion (9/24 hours) of the day with glucose concentrations in excess of 8mmol/L, suggesting that implementation of the IDF guidelines presents a challenge in normal clinical practice. HbA1c was a good indicator of post-prandial hyperglycaemia.
Twenty-nine volunteers with diet-controlled type 2 diabetes were recruited (mean HbA1c 50mmol/mol [6.7%], SD 6.5 [0.6]); mean age 62 years [SD 5.8]; mean BMI 31.9kg/m2 [SD 5.3]), and underwent a three-day period of continuous glucose monitoring (CGMS) at home.
Compared with volunteers with an HbA1c >48mmol/mol (6.5%), those with an HbA1c =48mmol/mol (6.5%) – mean HbA1c 54 (7.1%) vs 44.9mmol/mol (6.3%), p<0.0001 – had lower mean 24-hour glucose levels (8.4 vs 7.2mmol/L, p=0.02), reduced fasting glucose concentrations (8.0 vs 6.6mmol/L, p=0.01), and spent less time with glucose concentrations >8mmol/L (703.1 vs 338.5 min, p=0.01). HbA1c showed reasonable correlation with time spent with glucose >8mmol/L (r2=0.48, p<0.0001).
Even volunteers with reasonably well-controlled, diet-managed type 2 diabetes spent a large proportion (9/24 hours) of the day with glucose concentrations in excess of 8mmol/L, suggesting that implementation of the IDF guidelines presents a challenge in normal clinical practice. HbA1c was a good indicator of post-prandial hyperglycaemia.
| Original language | English |
|---|---|
| Pages (from-to) | 58-60 |
| Number of pages | 3 |
| Journal | Practical Diabetes |
| Volume | 29 |
| Issue number | 2 |
| Early online date | 6 Mar 2012 |
| DOIs | |
| Publication status | Published - Mar 2012 |
Keywords
- type 2 diabetes
- post-prandial hyperglycaemia
- CGMS
