What Is Postprandial Hyperglycemia?

Postprandial blood glucose generally refers to blood glucose measured 2 hours after dinner, lunch and dinner. Postprandial blood glucose represents the blood glucose level after glucose load, and is generally measured at 2 hours after breakfast. Postprandial blood glucose is an important indicator for early diagnosis of diabetes and also plays an important role in preventing the occurrence of diabetic macrovascular and microvascular complications. Postprandial blood glucose levels are usually higher than fasting blood glucose levels. When postprandial blood glucose exceeds 11.1mmol / L, it can cause a variety of complications, such as kidney disease, cardiovascular and cerebrovascular disease, and limb numbness.

Basic Information

Chinese name

Postprandial blood glucose

Clinical significance

Helps early intervention reduce the incidence of diabetes

Normal value

2 hours postprandial blood glucose: less than 7.8mmol / L

Clinical significance of postprandial blood glucose

1. Postprandial blood glucose helps early intervention and reduces the incidence of diabetes. When the fasting blood glucose value is normal, but the postprandial blood glucose is between healthy people and diabetic patients, it is called impaired glucose tolerance. At this time, without intervention, some patients will develop type 2 diabetes. Therefore, increasing attention to postprandial blood glucose can effectively reduce the risk of diabetes.
2. Postprandial blood glucose helps early diagnosis of diabetes. In the early stage of diabetes, fasting blood glucose is usually normal. After meals, blood glucose will rise rapidly, and the demand for insulin will increase. At this time, the islet reserve function of the patient will decrease, insulin secretion will decrease, and postprandial blood glucose will be high. Usually, postprandial blood glucose is the earliest clinical manifestation before the onset of type 2 diabetes. Checking postprandial blood glucose can diagnose diabetes earlier.
3. Can better predict the occurrence of cardiovascular disease. Among diabetic patients and people with impaired glucose tolerance, cardiovascular disease risk factors are related to postprandial blood glucose levels. Many international studies have shown that postprandial blood glucose can better prevent the occurrence of cardiovascular and cerebrovascular diseases, and to a large extent Reduce the probability of death from cardiovascular and cerebrovascular diseases.
4. Postprandial blood glucose is an important cause of chronic complications of diabetes. Studies have shown that the mortality, morbidity and postprandial blood glucose of diabetic myocardial infarction are closely related. In addition, studies have shown that the early mortality rate of patients with diabetes increases with the increase in postprandial blood glucose, but has little correlation with fasting blood glucose. These studies have shown a close relationship between postprandial blood glucose and cardiovascular disease.

Reference range of normal postprandial blood glucose

2 hours postprandial blood glucose: less than 7.8mmol / L. When the blood glucose 2 hours after a meal is 7.8 to 11.1 mmol / L, it can be diagnosed as impaired or impaired glucose tolerance.