Complications of Diabetes Mellitus

Early (acute) complications

This group of pathological conditions is characterized by rapid development and is inextricably linked with sharp, sudden decompensations of glucose levels in the patient's body. Such conditions require immediate medical intervention, as they can pose a direct threat to life.

Key early complications include:

• Hypoglycemia — a critical drop in blood sugar concentration, often arising against the background of therapy imbalance.
• Hyperglycemia and ketoacidosis — conditions accompanied by extremely high glucose levels and the accumulation of ketone bodies. Without timely initiation of therapy, especially in patients with type 1 diabetes, ketoacidosis can rapidly progress into life-threatening ketoacidotic coma.

Late (delayed) complications

Unlike acute crises, late complications develop gradually. Their pathogenetic basis is a total systemic lesion of the vascular bed and nervous tissue structures arising from prolonged exposure to non-target glucose levels.

Late manifestations are traditionally divided into two subgroups depending on the caliber of the affected vessels:

1. Microangiopathies — specific damage to small-caliber vessels. The most vulnerable target organs in this case are:
2. Organs of vision: diabetic retinopathy develops.
3. Nervous system: diabetic neuropathy forms.
4. Kidneys: diabetic nephropathy occurs.
5. Macroangiopathies — pathological changes in large blood vessels. This type of angiopathy is the main trigger for the subsequent development of severe cardiovascular diseases in patients with diabetes.

Principles of monitoring and prevention

The disease management strategy includes primary prevention (preventing the disease itself) and secondary prevention (preventing the development of its complications).

Primary prevention varies dramatically depending on the type of pathology:

• In type 1 diabetes, there are currently no specific prevention methods. Any attempts at preventive drug use in high-risk groups have been officially recognized as ineffective.
• In type 2 diabetes, the fundamental principle of protection is the strict prevention of obesity.

Secondary prevention is based on extremely early diagnosis and timely prescription of treatment. A crucial element in successfully preventing delayed vascular and neurological problems is high-quality patient education in self-monitoring skills. The main goal of such monitoring is the continuous maintenance of glucose levels within strict physiological limits.

A mandatory condition for adequate therapy is a delicate balance: treatment must be intensive enough to prevent hyperglycemia, but at the same time balanced to prevent life-threatening drops in sugar levels (hypoglycemia). It is worth noting that upon successfully achieving stable compensation of carbohydrate metabolism (particularly in type 2 diabetes), the frequency of regular glucometer measurements can be safely reduced to several times a week.

Class and exam questions

What else to study on this topic

• Pathogenesis and emergency care in ketoacidotic coma
• Patient glycemic self-monitoring education programs
• Stages of development of diabetic retinopathy and nephropathy
• The link between macroangiopathies and the risk of cardiovascular events

Other topics in the section «Chapter 11. Endocrine Diseases in Children»

Prepared by WhiteCoat Pro faculty in accordance with the medical school curriculum. For educational purposes only.